1# configure.ac for GCC 2# Process this file with autoconf to generate a configuration script. 3 4# Copyright (C) 1997-2021 Free Software Foundation, Inc. 5 6#This file is part of GCC. 7 8#GCC is free software; you can redistribute it and/or modify it under 9#the terms of the GNU General Public License as published by the Free 10#Software Foundation; either version 3, or (at your option) any later 11#version. 12 13#GCC is distributed in the hope that it will be useful, but WITHOUT 14#ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 15#FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 16#for more details. 17 18#You should have received a copy of the GNU General Public License 19#along with GCC; see the file COPYING3. If not see 20#<http://www.gnu.org/licenses/>. 21 22# -------------------------------- 23# Initialization and sanity checks 24# -------------------------------- 25 26AC_INIT 27AC_CONFIG_SRCDIR(tree.c) 28AC_CONFIG_HEADER(auto-host.h:config.in) 29 30gcc_version=`cat $srcdir/BASE-VER` 31 32# Determine the host, build, and target systems 33AC_CANONICAL_BUILD 34AC_CANONICAL_HOST 35AC_CANONICAL_TARGET 36 37# Determine the noncanonical host name, for Ada. 38ACX_NONCANONICAL_HOST 39 40# Determine the noncanonical target name, for directory use. 41ACX_NONCANONICAL_TARGET 42 43# Used for constructing correct paths for offload compilers. 44real_target_noncanonical=${target_noncanonical} 45accel_dir_suffix= 46 47# Determine the target- and build-specific subdirectories 48GCC_TOPLEV_SUBDIRS 49 50# Set program_transform_name 51AC_ARG_PROGRAM 52 53# Check for bogus environment variables. 54# Test if LIBRARY_PATH contains the notation for the current directory 55# since this would lead to problems installing/building glibc. 56# LIBRARY_PATH contains the current directory if one of the following 57# is true: 58# - one of the terminals (":" and ";") is the first or last sign 59# - two terminals occur directly after each other 60# - the path contains an element with a dot in it 61AC_MSG_CHECKING(LIBRARY_PATH variable) 62changequote(,)dnl 63case ${LIBRARY_PATH} in 64 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* ) 65 library_path_setting="contains current directory" 66 ;; 67 *) 68 library_path_setting="ok" 69 ;; 70esac 71changequote([,])dnl 72AC_MSG_RESULT($library_path_setting) 73if test "$library_path_setting" != "ok"; then 74AC_MSG_ERROR([ 75*** LIBRARY_PATH shouldn't contain the current directory when 76*** building gcc. Please change the environment variable 77*** and run configure again.]) 78fi 79 80# Test if GCC_EXEC_PREFIX contains the notation for the current directory 81# since this would lead to problems installing/building glibc. 82# GCC_EXEC_PREFIX contains the current directory if one of the following 83# is true: 84# - one of the terminals (":" and ";") is the first or last sign 85# - two terminals occur directly after each other 86# - the path contains an element with a dot in it 87AC_MSG_CHECKING(GCC_EXEC_PREFIX variable) 88changequote(,)dnl 89case ${GCC_EXEC_PREFIX} in 90 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* ) 91 gcc_exec_prefix_setting="contains current directory" 92 ;; 93 *) 94 gcc_exec_prefix_setting="ok" 95 ;; 96esac 97changequote([,])dnl 98AC_MSG_RESULT($gcc_exec_prefix_setting) 99if test "$gcc_exec_prefix_setting" != "ok"; then 100AC_MSG_ERROR([ 101*** GCC_EXEC_PREFIX shouldn't contain the current directory when 102*** building gcc. Please change the environment variable 103*** and run configure again.]) 104fi 105 106# ----------- 107# Directories 108# ----------- 109 110# Specify the local prefix 111local_prefix= 112AC_ARG_WITH(local-prefix, 113[AS_HELP_STRING([--with-local-prefix=DIR], 114 [specifies directory to put local include])], 115[case "${withval}" in 116yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;; 117no) ;; 118*) local_prefix=$with_local_prefix ;; 119esac]) 120 121# Default local prefix if it is empty 122if test x$local_prefix = x; then 123 local_prefix=/usr/local 124fi 125 126AC_ARG_WITH([native-system-header-dir], 127 [ --with-native-system-header-dir=dir 128 use dir as the directory to look for standard 129 system header files in. Defaults to /usr/include.], 130[ 131 case ${with_native_system_header_dir} in 132 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;; 133 /* | [[A-Za-z]]:[[\\/]]*) ;; 134 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;; 135 esac 136 configured_native_system_header_dir="${withval}" 137], [configured_native_system_header_dir=]) 138 139AC_ARG_WITH(build-sysroot, 140 [AS_HELP_STRING([--with-build-sysroot=sysroot], 141 [use sysroot as the system root during the build])], 142 [if test x"$withval" != x ; then 143 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval" 144 fi], 145 [SYSROOT_CFLAGS_FOR_TARGET=]) 146AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET) 147 148if test "x$prefix" = xNONE; then 149 test_prefix=/usr/local 150else 151 test_prefix=$prefix 152fi 153if test "x$exec_prefix" = xNONE; then 154 test_exec_prefix=$test_prefix 155else 156 test_exec_prefix=$exec_prefix 157fi 158 159AC_ARG_WITH(sysroot, 160[AS_HELP_STRING([[--with-sysroot[=DIR]]], 161 [search for usr/lib, usr/include, et al, within DIR])], 162[ 163 case ${with_sysroot} in 164 /) ;; 165 */) with_sysroot=`echo $with_sysroot | sed 's,/$,,'` ;; 166 esac 167 case ${with_sysroot} in 168 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;; 169 *) TARGET_SYSTEM_ROOT=$with_sysroot ;; 170 esac 171 172 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"' 173 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)' 174 175 case ${TARGET_SYSTEM_ROOT} in 176 "${test_prefix}"|"${test_prefix}/"*|\ 177 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\ 178 '${prefix}'|'${prefix}/'*|\ 179 '${exec_prefix}'|'${exec_prefix}/'*) 180 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE" 181 TARGET_SYSTEM_ROOT_DEFINE="$t" 182 ;; 183 esac 184], [ 185 TARGET_SYSTEM_ROOT= 186 TARGET_SYSTEM_ROOT_DEFINE= 187 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include' 188]) 189AC_SUBST(TARGET_SYSTEM_ROOT) 190AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE) 191AC_SUBST(CROSS_SYSTEM_HEADER_DIR) 192 193# Don't set gcc_gxx_include_dir to gxx_include_dir since that's only 194# passed in by the toplevel make and thus we'd get different behavior 195# depending on where we built the sources. 196gcc_gxx_include_dir= 197# Specify the g++ header file directory 198AC_ARG_WITH(gxx-include-dir, 199[AS_HELP_STRING([--with-gxx-include-dir=DIR], 200 [specifies directory to put g++ header files])], 201[case "${withval}" in 202yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;; 203no) ;; 204*) gcc_gxx_include_dir=$with_gxx_include_dir ;; 205esac]) 206 207# If both --with-sysroot and --with-gxx-include-dir are passed, we interpolate 208# the former in the latter and, upon success, compute gcc_gxx_include_dir as 209# relative to the sysroot. 210gcc_gxx_include_dir_add_sysroot=0 211 212# This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO. 213if test x${gcc_gxx_include_dir} = x; then 214 if test x${enable_version_specific_runtime_libs} = xyes; then 215 gcc_gxx_include_dir='${libsubdir}/include/c++' 216 else 217 libstdcxx_incdir='include/c++/$(version)' 218 if test x$host != x$target; then 219 libstdcxx_incdir="$target_alias/$libstdcxx_incdir" 220 fi 221 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir" 222 fi 223elif test "${with_sysroot+set}" = set; then 224 gcc_gxx_without_sysroot=`expr "${gcc_gxx_include_dir}" : "${with_sysroot}"'\(.*\)'` 225 if test "${gcc_gxx_without_sysroot}"; then 226 gcc_gxx_include_dir="${gcc_gxx_without_sysroot}" 227 gcc_gxx_include_dir_add_sysroot=1 228 fi 229fi 230 231# Configuration for an alternate set of C++ headers. 232gcc_gxx_libcxx_include_dir= 233# Specify the alternate g++ header file directory 234AC_ARG_WITH(gxx-libcxx-include-dir, 235[AS_HELP_STRING([--with-gxx-libcxx-include-dir=DIR], 236 [specifies directory to find libc++ header files])], 237[case "${withval}" in 238yes) AC_MSG_ERROR(bad value ${withval} given for libc++ include directory) ;; 239no) ;; 240*) gcc_gxx_libcxx_include_dir=$with_gxx_libcxx_include_dir ;; 241esac]) 242 243# If both --with-sysroot and --with-gxx-libcxx-include-dir are passed, we 244# check to see if the latter starts with the former and, upon success, compute 245# gcc_gxx_libcxx_include_dir as relative to the sysroot. 246gcc_gxx_libcxx_include_dir_add_sysroot=0 247 248if test x${gcc_gxx_libcxx_include_dir} != x; then 249 AC_DEFINE(ENABLE_STDLIB_OPTION, 1, 250 [Define if the -stdlib= option should be enabled.]) 251else 252 AC_DEFINE(ENABLE_STDLIB_OPTION, 0) 253fi 254# ??? This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO. 255if test x${gcc_gxx_libcxx_include_dir} = x; then 256 if test x${enable_version_specific_runtime_libs} = xyes; then 257 gcc_gxx_libcxx_include_dir='${libsubdir}/libc++_include/c++/v1' 258 else 259 libcxx_incdir='libc++_include/c++/$(version)/v1' 260 if test x$host != x$target; then 261 libcxx_incdir="$target_alias/$libcxx_incdir" 262 fi 263 gcc_gxx_libcxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libcxx_incdir" 264 fi 265elif test "${with_sysroot+set}" = set; then 266 gcc_gxx_libcxx_without_sysroot=`expr "${gcc_gxx_libcxx_include_dir}" : "${with_sysroot}"'\(.*\)'` 267 if test "${gcc_gxx_libcxx_without_sysroot}"; then 268 gcc_gxx_libcxx_include_dir="${gcc_gxx_libcxx_without_sysroot}" 269 gcc_gxx_libcxx_include_dir_add_sysroot=1 270 fi 271fi 272 273AC_ARG_WITH(cpp_install_dir, 274[AC_HELP_STRING([--with-cpp-install-dir=DIR], 275 [install the user visible C preprocessor in DIR 276 (relative to PREFIX) as well as PREFIX/bin])], 277[if test x$withval = xyes; then 278 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument]) 279elif test x$withval != xno; then 280 cpp_install_dir=$withval 281fi]) 282 283# We would like to our source tree to be readonly. However when releases or 284# pre-releases are generated, the flex/bison generated files as well as the 285# various formats of manuals need to be included along with the rest of the 286# sources. Therefore we have --enable-generated-files-in-srcdir to do 287# just that. 288 289AC_MSG_CHECKING([whether to place generated files in the source directory]) 290 dnl generated-files-in-srcdir is disabled by default 291 AC_ARG_ENABLE(generated-files-in-srcdir, 292 [AS_HELP_STRING([--enable-generated-files-in-srcdir], 293 [put copies of generated files in source dir 294 intended for creating source tarballs for users 295 without texinfo bison or flex])], 296 generated_files_in_srcdir=$enableval, 297 generated_files_in_srcdir=no) 298 299AC_MSG_RESULT($generated_files_in_srcdir) 300 301if test "$generated_files_in_srcdir" = "yes"; then 302 GENINSRC='' 303else 304 GENINSRC='#' 305fi 306AC_SUBST(GENINSRC) 307 308# ------------------- 309# Find default linker 310# ------------------- 311 312# With GNU ld 313AC_ARG_WITH(gnu-ld, 314[AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])], 315gnu_ld_flag="$with_gnu_ld", 316gnu_ld_flag=no) 317 318case $target in 319 *darwin*) ld64_flag=yes;; # Darwin can only use a ld64-compatible linker. 320 *) ld64_flag=no;; 321esac 322 323# With pre-defined ld 324AC_ARG_WITH(ld, 325[AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])], 326DEFAULT_LINKER="$with_ld") 327if test x"${DEFAULT_LINKER+set}" = x"set"; then 328 if test ! -x "$DEFAULT_LINKER"; then 329 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER]) 330 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then 331 gnu_ld_flag=yes 332 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep ld64- > /dev/null; then 333 ld64_flag=yes 334 fi 335 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER", 336 [Define to enable the use of a default linker.]) 337fi 338 339AC_MSG_CHECKING([whether a default linker was specified]) 340if test x"${DEFAULT_LINKER+set}" = x"set"; then 341 if test x"$gnu_ld_flag" = x"no"; then 342 AC_MSG_RESULT([yes ($DEFAULT_LINKER)]) 343 else 344 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)]) 345 fi 346else 347 AC_MSG_RESULT(no) 348fi 349 350# With demangler in GNU ld 351AC_ARG_WITH(demangler-in-ld, 352[AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])], 353demangler_in_ld="$with_demangler_in_ld", 354demangler_in_ld=yes) 355 356# ---------------------- 357# Find default assembler 358# ---------------------- 359 360# With GNU as 361AC_ARG_WITH(gnu-as, 362[AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])], 363gas_flag="$with_gnu_as", 364gas_flag=no) 365 366AC_ARG_WITH(as, 367[AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])], 368DEFAULT_ASSEMBLER="$with_as") 369if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then 370 if test ! -x "$DEFAULT_ASSEMBLER"; then 371 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER]) 372 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then 373 gas_flag=yes 374 fi 375 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER", 376 [Define to enable the use of a default assembler.]) 377fi 378 379AC_MSG_CHECKING([whether a default assembler was specified]) 380if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then 381 if test x"$gas_flag" = x"no"; then 382 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)]) 383 else 384 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)]) 385 fi 386else 387 AC_MSG_RESULT(no) 388fi 389 390# --------------- 391# Find C compiler 392# --------------- 393 394# If a non-executable a.out is present (e.g. created by GNU as above even if 395# invoked with -v only), the IRIX 6 native ld just overwrites the existing 396# file, even when creating an executable, so an execution test fails. 397# Remove possible default executable files to avoid this. 398# 399# FIXME: This really belongs into AC_PROG_CC and can be removed once 400# Autoconf includes it. 401rm -f a.out a.exe b.out 402 403# Find the native compiler 404AC_PROG_CC 405AC_PROG_CXX 406ACX_PROG_GNAT([-I"$srcdir"/ada/libgnat]) 407 408# Do configure tests with the C++ compiler, since that's what we build with. 409AC_LANG(C++) 410 411# Remove the -O2: for historical reasons, unless bootstrapping we prefer 412# optimizations to be activated explicitly by the toplevel. 413case "$CC" in 414 */prev-gcc/xgcc*) ;; 415 *) CFLAGS=`echo "$CFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` 416 CXXFLAGS=`echo "$CXXFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` ;; 417esac 418AC_SUBST(CFLAGS) 419AC_SUBST(CXXFLAGS) 420 421# Determine PICFLAG for target gnatlib. 422GCC_PICFLAG_FOR_TARGET 423AC_SUBST(PICFLAG_FOR_TARGET) 424 425# ------------------------- 426# Check C compiler features 427# ------------------------- 428 429AC_USE_SYSTEM_EXTENSIONS 430 431AC_PROG_CPP 432AC_C_INLINE 433 434AC_SYS_LARGEFILE 435 436# sizeof(char) is 1 by definition. 437AC_CHECK_SIZEOF(void *) 438AC_CHECK_SIZEOF(short) 439AC_CHECK_SIZEOF(int) 440AC_CHECK_SIZEOF(long) 441AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)]) 442GCC_STDINT_TYPES 443if test x"$ac_cv_c_uint64_t" = x"no" -o x"$ac_cv_c_int64_t" = x"no"; then 444 AC_MSG_ERROR([uint64_t or int64_t not found]) 445fi 446 447# check what underlying integer type int64_t uses 448AC_CACHE_CHECK(for int64_t underlying type, ac_cv_int64_t_type, [ 449AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ 450#ifdef HAVE_STDINT_H 451#include <stdint.h> 452#endif 453template <typename T> struct X { }; 454template <> 455struct X<long> { typedef long t; }; 456]], [[X<int64_t>::t x;]])],[ac_cv_int64_t_type=long],[ac_cv_int64_t_type="long long"])]) 457if test "$ac_cv_int64_t_type" = "long"; then 458 AC_DEFINE(INT64_T_IS_LONG, 1, 459 [Define if int64_t uses long as underlying type.]) 460else 461AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ 462#ifdef HAVE_STDINT_H 463#include <stdint.h> 464#endif 465template <typename T> struct X { }; 466template <> 467struct X<long long> { typedef long long t; }; 468]], [[X<int64_t>::t x;]])],[],[AC_MSG_ERROR([error verifying int64_t uses long long])]) 469fi 470 471AC_CACHE_CHECK(for std::swap in <utility>, ac_cv_std_swap_in_utility, [ 472AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ 473#include <utility> 474]], [[int a, b; std::swap(a,b);]])],[ac_cv_std_swap_in_utility=yes],[ac_cv_std_swap_in_utility=no])]) 475if test $ac_cv_std_swap_in_utility = yes; then 476 AC_DEFINE(HAVE_SWAP_IN_UTILITY, 1, 477 [Define if <utility> defines std::swap.]) 478fi 479 480# Check whether compiler is affected by placement new aliasing bug (PR 29286). 481# If the host compiler is affected by the bug, and we build with optimization 482# enabled (which happens e.g. when cross-compiling), the pool allocator may 483# get miscompiled. Use -fno-strict-aliasing to work around this problem. 484# Since there is no reliable feature check for the presence of this bug, 485# we simply use a GCC version number check. (This should never trigger for 486# stages 2 or 3 of a native bootstrap.) 487aliasing_flags= 488if test "$GCC" = yes; then 489 saved_CXXFLAGS="$CXXFLAGS" 490 491 # The following test compilation will succeed if and only if $CXX accepts 492 # -fno-strict-aliasing *and* is older than GCC 4.3. 493 CXXFLAGS="$CXXFLAGS -fno-strict-aliasing" 494 AC_MSG_CHECKING([whether $CXX is affected by placement new aliasing bug]) 495 AC_COMPILE_IFELSE([AC_LANG_SOURCE([ 496#if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3) 497#error compiler not affected by placement new aliasing bug 498#endif 499])], 500 [AC_MSG_RESULT([yes]); aliasing_flags='-fno-strict-aliasing'], 501 [AC_MSG_RESULT([no])]) 502 503 CXXFLAGS="$saved_CXXFLAGS" 504fi 505AC_SUBST(aliasing_flags) 506 507 508 509# --------------------- 510# Warnings and checking 511# --------------------- 512 513# Check $CC warning features (if it's GCC). 514# We want to use -pedantic, but we don't want warnings about 515# * 'long long' 516# * variadic macros 517# * overlong strings 518# * C++11 narrowing conversions in { } 519# So, we only use -pedantic if we can disable those warnings. 520 521# In stage 1, disable -Wformat warnings from old GCCs about new % codes 522AC_ARG_ENABLE(build-format-warnings, 523 AS_HELP_STRING([--disable-build-format-warnings],[don't use -Wformat while building GCC]), 524 [],[enable_build_format_warnings=yes]) 525AS_IF([test $enable_build_format_warnings = no], 526 [wf_opt=-Wno-format],[wf_opt=]) 527ACX_PROG_CXX_WARNING_OPTS( 528 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings ], 529 [-Wcast-qual -Wno-error=format-diag $wf_opt])), 530 [loose_warn]) 531ACX_PROG_CC_WARNING_OPTS( 532 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes ], 533 [-Wno-error=format-diag])), [c_loose_warn]) 534ACX_PROG_CXX_WARNING_OPTS( 535 m4_quote(m4_do([-Wmissing-format-attribute ], 536 [-Woverloaded-virtual])), [strict_warn]) 537ACX_PROG_CC_WARNING_OPTS( 538 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn]) 539ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC( 540 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ], 541 [-Wno-overlength-strings])), [strict_warn]) 542ACX_PROG_CXX_WARNINGS_ARE_ERRORS([manual], [strict_warn]) 543 544# The above macros do nothing if the compiler is not GCC. However, the 545# Makefile has more goo to add other flags, so these variables are used 546# to enable warnings only for GCC. 547warn_cflags= 548warn_cxxflags= 549if test "x$GCC" = "xyes"; then 550 warn_cflags='$(GCC_WARN_CFLAGS)' 551 warn_cxxflags='$(GCC_WARN_CXXFLAGS)' 552fi 553AC_SUBST(warn_cflags) 554AC_SUBST(warn_cxxflags) 555 556# Disable exceptions and RTTI if building with g++ 557ACX_PROG_CC_WARNING_OPTS( 558 m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])), 559 [noexception_flags]) 560 561# Enable expensive internal checks 562is_release= 563if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then 564 is_release=yes 565fi 566 567AC_ARG_ENABLE(checking, 568[AS_HELP_STRING([[--enable-checking[=LIST]]], 569 [enable expensive run-time checks. With LIST, 570 enable only specific categories of checks. 571 Categories are: yes,no,all,none,release. 572 Flags are: assert,df,extra,fold,gc,gcac,gimple,misc, 573 rtlflag,rtl,runtime,tree,valgrind,types])], 574[ac_checking_flags="${enableval}"],[ 575# Determine the default checks. 576if test x$is_release = x ; then 577 ac_checking_flags=yes,extra 578else 579 ac_checking_flags=release 580fi]) 581IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS," 582for check in release $ac_checking_flags 583do 584 case $check in 585 # these set all the flags to specific states 586 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ; 587 ac_fold_checking= ; ac_gc_checking=1 ; ac_extra_checking= ; 588 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ; 589 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ; 590 ac_tree_checking=1 ; ac_valgrind_checking= ; 591 ac_types_checking=1 ;; 592 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ; 593 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ; 594 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ; 595 ac_rtlflag_checking= ; ac_runtime_checking= ; 596 ac_tree_checking= ; ac_valgrind_checking= ; 597 ac_types_checking= ;; 598 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ; 599 ac_fold_checking=1 ; ac_gc_checking=1 ; ac_extra_checking=1 ; 600 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ; 601 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ; 602 ac_tree_checking=1 ; ac_valgrind_checking= ; 603 ac_types_checking=1 ;; 604 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ; 605 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ; 606 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ; 607 ac_rtlflag_checking= ; ac_runtime_checking=1 ; 608 ac_tree_checking= ; ac_valgrind_checking= ; 609 ac_types_checking= ;; 610 # these enable particular checks 611 assert) ac_assert_checking=1 ;; 612 df) ac_df_checking=1 ;; 613 extra) ac_extra_checking=1 ;; 614 fold) ac_fold_checking=1 ;; 615 gc) ac_gc_checking=1 ;; 616 gcac) ac_gc_always_collect=1 ;; 617 gimple) ac_gimple_checking=1 ;; 618 misc) ac_checking=1 ;; 619 rtl) ac_rtl_checking=1 ;; 620 rtlflag) ac_rtlflag_checking=1 ;; 621 runtime) ac_runtime_checking=1 ;; 622 tree) ac_tree_checking=1 ;; 623 types) ac_types_checking=1 ;; 624 valgrind) ac_valgrind_checking=1 ;; 625 *) AC_MSG_ERROR(unknown check category $check) ;; 626 esac 627done 628IFS="$ac_save_IFS" 629 630nocommon_flag="" 631if test x$ac_checking != x ; then 632 AC_DEFINE(CHECKING_P, 1, 633[Define to 0/1 if you want more run-time sanity checks. This one gets a grab 634bag of miscellaneous but relatively cheap checks.]) 635 nocommon_flag=-fno-common 636else 637 AC_DEFINE(CHECKING_P, 0) 638fi 639AC_SUBST(nocommon_flag) 640if test x$ac_extra_checking != x ; then 641 AC_DEFINE(ENABLE_EXTRA_CHECKING, 1, 642[Define to 0/1 if you want extra run-time checking that might affect code 643generation.]) 644else 645 AC_DEFINE(ENABLE_EXTRA_CHECKING, 0) 646fi 647if test x$ac_df_checking != x ; then 648 AC_DEFINE(ENABLE_DF_CHECKING, 1, 649[Define if you want more run-time sanity checks for dataflow.]) 650fi 651if test x$ac_assert_checking != x ; then 652 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1, 653[Define if you want assertions enabled. This is a cheap check.]) 654fi 655if test x$ac_gimple_checking != x ; then 656 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1, 657[Define if you want operations on GIMPLE (the basic data structure of 658the high-level optimizers) to be checked for dynamic type safety at 659runtime. This is moderately expensive.]) 660fi 661GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING) 662if test x$ac_runtime_checking != x ; then 663 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1, 664[Define if you want runtime assertions enabled. This is a cheap check.]) 665fi 666if test x$ac_tree_checking != x ; then 667 AC_DEFINE(ENABLE_TREE_CHECKING, 1, 668[Define if you want all operations on trees (the basic data 669 structure of the front ends) to be checked for dynamic type safety 670 at runtime. This is moderately expensive. 671 ]) 672 TREECHECKING=yes 673fi 674if test x$ac_types_checking != x ; then 675 AC_DEFINE(ENABLE_TYPES_CHECKING, 1, 676[Define if you want all gimple types to be verified after gimplifiation. 677 This is cheap. 678 ]) 679fi 680AC_SUBST(TREECHECKING) 681if test x$ac_rtl_checking != x ; then 682 AC_DEFINE(ENABLE_RTL_CHECKING, 1, 683[Define if you want all operations on RTL (the basic data structure 684 of the optimizer and back end) to be checked for dynamic type safety 685 at runtime. This is quite expensive.]) 686fi 687if test x$ac_rtlflag_checking != x ; then 688 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1, 689[Define if you want RTL flag accesses to be checked against the RTL 690 codes that are supported for each access macro. This is relatively 691 cheap.]) 692fi 693if test x$ac_gc_checking != x ; then 694 AC_DEFINE(ENABLE_GC_CHECKING, 1, 695[Define if you want the garbage collector to do object poisoning and 696 other memory allocation checks. This is quite expensive.]) 697fi 698if test x$ac_gc_always_collect != x ; then 699 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1, 700[Define if you want the garbage collector to operate in maximally 701 paranoid mode, validating the entire heap and collecting garbage at 702 every opportunity. This is extremely expensive.]) 703fi 704if test x$ac_fold_checking != x ; then 705 AC_DEFINE(ENABLE_FOLD_CHECKING, 1, 706[Define if you want fold checked that it never destructs its argument. 707 This is quite expensive.]) 708fi 709valgrind_path_defines= 710valgrind_command= 711 712dnl # This check AC_REQUIREs various stuff, so it *must not* be inside 713dnl # an if statement. This was the source of very frustrating bugs 714dnl # in converting to autoconf 2.5x! 715AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no) 716 717# It is certainly possible that there's valgrind but no valgrind.h. 718# GCC relies on making annotations so we must have both. 719AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>) 720AC_PREPROC_IFELSE([AC_LANG_SOURCE( 721 [[#include <valgrind/memcheck.h> 722#ifndef VALGRIND_DISCARD 723#error VALGRIND_DISCARD not defined 724#endif]])], 725 [gcc_cv_header_valgrind_memcheck_h=yes], 726 [gcc_cv_header_valgrind_memcheck_h=no]) 727AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h) 728AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>) 729AC_PREPROC_IFELSE([AC_LANG_SOURCE( 730 [[#include <memcheck.h> 731#ifndef VALGRIND_DISCARD 732#error VALGRIND_DISCARD not defined 733#endif]])], 734 [gcc_cv_header_memcheck_h=yes], 735 [gcc_cv_header_memcheck_h=no]) 736AC_MSG_RESULT($gcc_cv_header_memcheck_h) 737if test $gcc_cv_header_valgrind_memcheck_h = yes; then 738 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1, 739 [Define if valgrind's valgrind/memcheck.h header is installed.]) 740fi 741if test $gcc_cv_header_memcheck_h = yes; then 742 AC_DEFINE(HAVE_MEMCHECK_H, 1, 743 [Define if valgrind's memcheck.h header is installed.]) 744fi 745 746if test x$ac_valgrind_checking != x ; then 747 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind, 748 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1]) 749 if test "x$valgrind_path" = "x" \ 750 || (test $have_valgrind_h = no \ 751 && test $gcc_cv_header_memcheck_h = no \ 752 && test $gcc_cv_header_valgrind_memcheck_h = no); then 753 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h]) 754 fi 755 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"' 756 valgrind_command="$valgrind_path -q" 757 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1, 758[Define if you want to run subprograms and generated programs 759 through valgrind (a memory checker). This is extremely expensive.]) 760fi 761AC_SUBST(valgrind_path_defines) 762AC_SUBST(valgrind_command) 763 764# Enable code coverage collection 765AC_ARG_ENABLE(coverage, 766[AS_HELP_STRING([[--enable-coverage[=LEVEL]]], 767 [enable compiler's code coverage collection. 768 Use to measure compiler performance and locate 769 unused parts of the compiler. With LEVEL, specify 770 optimization. Values are opt, noopt, 771 default is noopt])], 772[case "${enableval}" in 773 yes|noopt) 774 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0 -fkeep-static-functions" 775 ;; 776 opt) 777 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2 -fkeep-static-functions" 778 ;; 779 no) 780 # a.k.a. --disable-coverage 781 coverage_flags="" 782 ;; 783 *) 784 AC_MSG_ERROR(unknown coverage setting $enableval) 785 ;; 786esac], 787[coverage_flags=""]) 788AC_SUBST(coverage_flags) 789 790AC_ARG_ENABLE(gather-detailed-mem-stats, 791[AS_HELP_STRING([--enable-gather-detailed-mem-stats], 792 [enable detailed memory allocation stats gathering])], [], 793[enable_gather_detailed_mem_stats=no]) 794gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi` 795AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats, 796[Define to enable detailed memory allocation stats gathering.]) 797 798AC_ARG_ENABLE(valgrind-annotations, 799[AS_HELP_STRING([--enable-valgrind-annotations], 800 [enable valgrind runtime interaction])], [], 801[enable_valgrind_annotations=no]) 802if test x$enable_valgrind_annotations != xno \ 803 || test x$ac_valgrind_checking != x; then 804 if (test $have_valgrind_h = no \ 805 && test $gcc_cv_header_memcheck_h = no \ 806 && test $gcc_cv_header_valgrind_memcheck_h = no); then 807 AC_MSG_ERROR([*** Can't find valgrind/memcheck.h, memcheck.h or valgrind.h]) 808 fi 809 AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1, 810[Define to get calls to the valgrind runtime enabled.]) 811fi 812 813# ------------------------------- 814# Miscenalleous configure options 815# ------------------------------- 816 817# With stabs 818AC_ARG_WITH(stabs, 819[AS_HELP_STRING([--with-stabs], 820 [arrange to use stabs instead of host debug format])], 821stabs="$with_stabs", 822stabs=no) 823 824# Determine whether or not multilibs are enabled. 825AC_ARG_ENABLE(multilib, 826[AS_HELP_STRING([--enable-multilib], 827 [enable library support for multiple ABIs])], 828[], [enable_multilib=yes]) 829AC_SUBST(enable_multilib) 830 831# Determine whether or not multiarch is enabled. 832AC_ARG_ENABLE(multiarch, 833[AS_HELP_STRING([--enable-multiarch], 834 [enable support for multiarch paths])], 835[case "${enableval}" in 836yes|no|auto) enable_multiarch=$enableval;; 837*) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;; 838esac], [enable_multiarch=auto]) 839if test x${enable_multiarch} = xauto; then 840 if test x${with_native_system_header_dir} != x; then 841 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)" 842 enable_multiarch=no 843 fi 844 if test x$host != x$target && test "x$with_sysroot" = x; then 845 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)" 846 enable_multiarch=no 847 fi 848fi 849AC_MSG_CHECKING(for multiarch configuration) 850AC_SUBST(enable_multiarch) 851AC_MSG_RESULT($enable_multiarch$ma_msg_suffix) 852 853# needed for setting the multiarch name for soft-float/hard-float ABIs 854AC_SUBST(with_cpu) 855AC_SUBST(with_float) 856 857# default stack clash protection guard size as power of twos in bytes. 858# Please keep these in sync with params.def. 859stk_clash_min=12 860stk_clash_max=30 861 862# Keep the default value when the option is not used to 0, this allows us to 863# distinguish between the cases where the user specifially set a value via 864# configure and when the normal default value is used. 865AC_ARG_WITH(stack-clash-protection-guard-size, 866[AS_HELP_STRING([--with-stack-clash-protection-guard-size=size], 867[Set the default stack clash protection guard size for specific targets as a power of two in bytes.])], 868[DEFAULT_STK_CLASH_GUARD_SIZE="$with_stack_clash_protection_guard_size"], [DEFAULT_STK_CLASH_GUARD_SIZE=0]) 869if test $DEFAULT_STK_CLASH_GUARD_SIZE -ne 0 \ 870 && (test $DEFAULT_STK_CLASH_GUARD_SIZE -lt $stk_clash_min \ 871 || test $DEFAULT_STK_CLASH_GUARD_SIZE -gt $stk_clash_max); then 872 AC_MSG_ERROR(m4_normalize([ 873 Invalid value $DEFAULT_STK_CLASH_GUARD_SIZE for --with-stack-clash-protection-guard-size. \ 874 Must be between $stk_clash_min and $stk_clash_max.])) 875fi 876 877AC_DEFINE_UNQUOTED(DEFAULT_STK_CLASH_GUARD_SIZE, $DEFAULT_STK_CLASH_GUARD_SIZE, 878 [Define to larger than zero set the default stack clash protector size.]) 879 880# Enable __cxa_atexit for C++. 881AC_ARG_ENABLE(__cxa_atexit, 882[AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])], 883[], []) 884 885# Enable C extension for decimal float if target supports it. 886GCC_AC_ENABLE_DECIMAL_FLOAT([$target]) 887 888dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi` 889AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp, 890[Define to 1 to enable decimal float extension to C.]) 891 892# Use default_decimal_float for dependency. 893enable_decimal_float=$default_decimal_float 894 895bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi` 896AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid, 897[Define to 1 to specify that we are using the BID decimal floating 898point format instead of DPD]) 899 900# Enable C extension for fixed-point arithmetic. 901AC_ARG_ENABLE(fixed-point, 902[AS_HELP_STRING([--enable-fixed-point], 903 [enable fixed-point arithmetic extension to C])], 904[], 905[ 906 case $target in 907 arm*) 908 enable_fixed_point=yes 909 ;; 910 911 mips*-*-*) 912 enable_fixed_point=yes 913 ;; 914 *) 915 AC_MSG_WARN([fixed-point is not supported for this target, ignored]) 916 enable_fixed_point=no 917 ;; 918 esac 919]) 920AC_SUBST(enable_fixed_point) 921 922fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi` 923AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint, 924[Define to 1 to enable fixed-point arithmetic extension to C.]) 925 926# Enable threads 927# Pass with no value to take the default 928# Pass with a value to specify a thread package 929AC_ARG_ENABLE(threads, 930[AS_HELP_STRING([[--enable-threads[=LIB]]], 931 [enable thread usage for target GCC, 932 using LIB thread package])],, 933[enable_threads='']) 934 935AC_ARG_ENABLE(tls, 936[AS_HELP_STRING([--enable-tls], 937 [enable or disable generation of tls code 938 overriding the assembler check for tls support])], 939[ 940 case $enable_tls in 941 yes | no) ;; 942 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls. 943Valid choices are 'yes' and 'no'.]) ;; 944 esac 945], [enable_tls='']) 946 947AC_ARG_ENABLE(vtable-verify, 948[AS_HELP_STRING([--enable-vtable-verify], 949 [enable vtable verification feature])],, 950[enable_vtable_verify=no]) 951vtable_verify=`if test x$enable_vtable_verify = xyes; then echo 1; else echo 0; fi` 952AC_DEFINE_UNQUOTED(ENABLE_VTABLE_VERIFY, $vtable_verify, 953[Define 0/1 if vtable verification feature is enabled.]) 954 955AC_ARG_ENABLE(analyzer, 956[AS_HELP_STRING([--disable-analyzer], 957 [disable -fanalyzer static analyzer])], 958if test x$enable_analyzer = xno; then 959 analyzer=0 960else 961 analyzer=1 962fi, 963analyzer=1) 964AC_DEFINE_UNQUOTED(ENABLE_ANALYZER, $analyzer, 965[Define 0/1 if static analyzer feature is enabled.]) 966 967AC_ARG_ENABLE(objc-gc, 968[AS_HELP_STRING([--enable-objc-gc], 969 [enable the use of Boehm's garbage collector with 970 the GNU Objective-C runtime])], 971if test x$enable_objc_gc = xno; then 972 objc_boehm_gc='' 973else 974 objc_boehm_gc=1 975fi, 976objc_boehm_gc='') 977 978AC_ARG_WITH(dwarf2, 979[AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])], 980dwarf2="$with_dwarf2", 981dwarf2=no) 982 983AC_ARG_ENABLE(shared, 984[AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])], 985[ 986 case $enable_shared in 987 yes | no) ;; 988 *) 989 enable_shared=no 990 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:," 991 for pkg in $enableval; do 992 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then 993 enable_shared=yes 994 fi 995 done 996 IFS="$ac_save_ifs" 997 ;; 998 esac 999], [enable_shared=yes]) 1000AC_SUBST(enable_shared) 1001 1002AC_ARG_ENABLE(gcov, 1003[ --disable-gcov don't provide libgcov and related host tools], 1004[], [enable_gcov=yes]) 1005AC_SUBST(enable_gcov) 1006 1007AC_ARG_WITH(specs, 1008 [AS_HELP_STRING([--with-specs=SPECS], 1009 [add SPECS to driver command-line processing])], 1010 [CONFIGURE_SPECS=$withval], 1011 [CONFIGURE_SPECS=] 1012) 1013AC_SUBST(CONFIGURE_SPECS) 1014 1015ACX_PKGVERSION([GCC]) 1016ACX_BUGURL([https://gcc.gnu.org/bugs/]) 1017 1018# Allow overriding the default URL for documentation 1019AC_ARG_WITH(documentation-root-url, 1020 AS_HELP_STRING([--with-documentation-root-url=URL], 1021 [Root for documentation URLs]), 1022 [case "$withval" in 1023 yes) AC_MSG_ERROR([documentation root URL not specified]) ;; 1024 no) AC_MSG_ERROR([documentation root URL not specified]) ;; 1025 */) DOCUMENTATION_ROOT_URL="$withval" ;; 1026 *) AC_MSG_ERROR([documentation root URL does not end with /]) ;; 1027 esac], 1028 DOCUMENTATION_ROOT_URL="https://gcc.gnu.org/onlinedocs/" 1029) 1030AC_DEFINE_UNQUOTED(DOCUMENTATION_ROOT_URL,"$DOCUMENTATION_ROOT_URL", 1031 [Define to the root for documentation URLs.]) 1032 1033# Allow overriding the default URL for GCC changes 1034AC_ARG_WITH(changes-root-url, 1035 AS_HELP_STRING([--with-changes-root-url=URL], 1036 [Root for GCC changes URLs]), 1037 [case "$withval" in 1038 yes) AC_MSG_ERROR([changes root URL not specified]) ;; 1039 no) AC_MSG_ERROR([changes root URL not specified]) ;; 1040 */) CHANGES_ROOT_URL="$withval" ;; 1041 *) AC_MSG_ERROR([changes root URL does not end with /]) ;; 1042 esac], 1043 CHANGES_ROOT_URL="https://gcc.gnu.org/" 1044) 1045AC_DEFINE_UNQUOTED(CHANGES_ROOT_URL,"$CHANGES_ROOT_URL", 1046 [Define to the root for URLs about GCC changes.]) 1047 1048# Sanity check enable_languages in case someone does not run the toplevel 1049# configure # script. 1050AC_ARG_ENABLE(languages, 1051[AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])], 1052[case ,${enable_languages}, in 1053 ,,|,yes,) 1054 # go safe -- we cannot be much sure without the toplevel 1055 # configure's 1056 # analysis of which target libs are present and usable 1057 enable_languages=c 1058 ;; 1059 *,all,*) 1060 AC_MSG_ERROR([only the toplevel supports --enable-languages=all]) 1061 ;; 1062 *,c,*) 1063 ;; 1064 *) 1065 enable_languages=c,${enable_languages} 1066 ;; 1067esac], 1068[enable_languages=c]) 1069 1070# If top-level libada has been disabled, then wire in install-gnatlib 1071# invocation with `make install', so that one can build and install 1072# the library manually with `make -C gcc all gnatlib gnattools install'. 1073if test x"$enable_libada" = xno; then 1074 gnat_install_lib=gnat-install-lib 1075else 1076 gnat_install_lib= 1077fi 1078AC_SUBST(gnat_install_lib) 1079 1080if test x"$enable_as_accelerator_for" != x; then 1081 AC_DEFINE(ACCEL_COMPILER, 1, 1082 [Define if this compiler should be built as the offload target compiler.]) 1083 enable_as_accelerator=yes 1084 case "${target}" in 1085 *-intelmicemul-*) 1086 # In this case we expect offload compiler to be built as native, so we 1087 # need to rename the driver to avoid clashes with host's drivers. 1088 program_transform_name="s&^&${target}-&" ;; 1089 esac 1090 sedscript="s#${target_noncanonical}#${enable_as_accelerator_for}-accel-${target_noncanonical}#" 1091 program_transform_name=`echo $program_transform_name | sed $sedscript` 1092 accel_dir_suffix=/accel/${target_noncanonical} 1093 real_target_noncanonical=${enable_as_accelerator_for} 1094fi 1095AC_SUBST(enable_as_accelerator) 1096AC_SUBST(real_target_noncanonical) 1097AC_SUBST(accel_dir_suffix) 1098 1099for tgt in `echo $enable_offload_targets | sed 's/,/ /g'`; do 1100 tgt=`echo $tgt | sed 's/=.*//'` 1101 1102 enable_offloading=1 1103 case "$tgt" in 1104 *-intelmic-* | *-intelmicemul-*) 1105 omp_device_property=omp-device-properties-i386 1106 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/i386/t-omp-device" 1107 ;; 1108 amdgcn*) 1109 omp_device_property=omp-device-properties-gcn 1110 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/gcn/t-omp-device" 1111 ;; 1112 nvptx*) 1113 omp_device_property=omp-device-properties-nvptx 1114 omp_device_property_tmake_file="${omp_device_property_tmake_file} \$(srcdir)/config/nvptx/t-omp-device" 1115 ;; 1116 *) 1117 AC_MSG_ERROR([unknown offload target specified]) 1118 ;; 1119 esac 1120 omp_device_properties="${omp_device_properties} ${tgt}=${omp_device_property}" 1121 omp_device_property_deps="${omp_device_property_deps} ${omp_device_property}" 1122 1123 if test x"$offload_targets" = x; then 1124 offload_targets=$tgt 1125 else 1126 offload_targets="$offload_targets,$tgt" 1127 fi 1128done 1129AC_SUBST(omp_device_properties) 1130AC_SUBST(omp_device_property_deps) 1131 1132AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets", 1133 [Define to offload targets, separated by commas.]) 1134if test x"$enable_offloading" != x; then 1135 AC_DEFINE(ENABLE_OFFLOADING, 1, 1136 [Define this to enable support for offloading.]) 1137else 1138 AC_DEFINE(ENABLE_OFFLOADING, 0, 1139 [Define this to enable support for offloading.]) 1140fi 1141 1142AC_ARG_WITH(multilib-list, 1143[AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])], 1144:, 1145with_multilib_list=default) 1146 1147AC_ARG_WITH(multilib-generator, 1148[AS_HELP_STRING([--with-multilib-generator], [Multi-libs configuration string (RISC-V only)])], 1149:, 1150with_multilib_generator=default) 1151 1152# ------------------------- 1153# Checks for other programs 1154# ------------------------- 1155 1156AC_PROG_MAKE_SET 1157 1158# Find some useful tools 1159AC_PROG_AWK 1160# We need awk to create options.c and options.h. 1161# Bail out if it's missing. 1162case ${AWK} in 1163 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;; 1164esac 1165 1166gcc_AC_PROG_LN_S 1167ACX_PROG_LN($LN_S) 1168AC_PROG_RANLIB 1169ranlib_flags="" 1170AC_SUBST(ranlib_flags) 1171 1172gcc_AC_PROG_INSTALL 1173 1174# See if cmp has --ignore-initial. 1175gcc_AC_PROG_CMP_IGNORE_INITIAL 1176 1177# See if we have the mktemp command. 1178AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no) 1179 1180# See if makeinfo has been installed and is modern enough 1181# that we can use it. 1182ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version, 1183 [GNU texinfo.* \([0-9][0-9.]*\)], 1184 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*]) 1185if test $gcc_cv_prog_makeinfo_modern = no; then 1186 AC_MSG_WARN([ 1187*** Makeinfo is missing or too old. 1188*** Info documentation will not be built.]) 1189 BUILD_INFO= 1190else 1191 BUILD_INFO=info 1192fi 1193AC_SUBST(BUILD_INFO) 1194 1195# Is pod2man recent enough to regenerate manpages? 1196AC_MSG_CHECKING([for recent Pod::Man]) 1197if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then 1198 AC_MSG_RESULT(yes) 1199 GENERATED_MANPAGES=generated-manpages 1200else 1201 AC_MSG_RESULT(no) 1202 GENERATED_MANPAGES= 1203fi 1204AC_SUBST(GENERATED_MANPAGES) 1205 1206MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing" 1207 1208# How about lex? 1209dnl Don't use AC_PROG_LEX; we insist on flex. 1210dnl LEXLIB is not useful in gcc. 1211AC_CHECK_PROGS([FLEX], flex, [$MISSING flex]) 1212 1213# Bison? 1214AC_CHECK_PROGS([BISON], bison, [$MISSING bison]) 1215 1216# Binutils are not build modules, unlike bison/flex/makeinfo. So we 1217# check for build == host before using them. 1218 1219# NM 1220if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \ 1221 && test -d ../binutils ; then 1222 NM='${objdir}/../binutils/nm-new' 1223else 1224 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm) 1225fi 1226 1227# AR 1228if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \ 1229 && test -d ../binutils ; then 1230 AR='${objdir}/../binutils/ar' 1231else 1232 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar) 1233fi 1234 1235# The jit documentation looks better if built with sphinx, but can be 1236# built with texinfo if sphinx is not available. 1237# Set "doc_build_sys" to "sphinx" or "texinfo" accordingly. 1238AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo) 1239 1240# -------------------- 1241# Checks for C headers 1242# -------------------- 1243 1244# Need to reject headers which give warnings, so that the -Werror bootstrap 1245# works later. *sigh* This needs to come before all header checks. 1246AC_PROG_CPP_WERROR 1247 1248AC_HEADER_STDC 1249AC_HEADER_TIME 1250ACX_HEADER_STRING 1251AC_HEADER_SYS_WAIT 1252AC_HEADER_TIOCGWINSZ 1253AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \ 1254 fcntl.h ftw.h unistd.h sys/file.h sys/time.h sys/mman.h \ 1255 sys/resource.h sys/param.h sys/times.h sys/stat.h \ 1256 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h) 1257 1258# Check for thread headers. 1259AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=]) 1260AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=]) 1261 1262# These tests can't be done till we know if we have limits.h. 1263gcc_AC_C_CHAR_BIT 1264AC_C_BIGENDIAN 1265 1266# ---------------------- 1267# Checks for C++ headers 1268# ---------------------- 1269 1270dnl Autoconf will give an error in the configure script if there is no 1271dnl C++ preprocessor. Hack to prevent that. 1272m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl 1273AC_PROG_CXXCPP 1274m4_popdef([AC_MSG_ERROR])[]dnl 1275 1276AC_CHECK_HEADERS(unordered_map) 1277AC_CHECK_HEADERS(tr1/unordered_map) 1278AC_CHECK_HEADERS(ext/hash_map) 1279 1280# -------- 1281# Dependency checking. 1282# -------- 1283 1284ZW_CREATE_DEPDIR 1285AC_CONFIG_COMMANDS([gccdepdir],[ 1286 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR 1287 for lang in $subdirs c-family common analyzer rtl-ssa 1288 do 1289 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR 1290 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR]) 1291 1292ZW_PROG_COMPILER_DEPENDENCIES([CXX]) 1293 1294# -------- 1295# UNSORTED 1296# -------- 1297 1298 1299# These libraries may be used by collect2. 1300# We may need a special search path to get them linked. 1301AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs, 1302[save_LIBS="$LIBS" 1303for libs in '' -lld -lmld \ 1304 '-L/usr/lib/cmplrs/cc2.11 -lmld' \ 1305 '-L/usr/lib/cmplrs/cc3.11 -lmld' 1306do 1307 LIBS="$libs" 1308 AC_TRY_LINK_FUNC(ldopen, 1309 [gcc_cv_collect2_libs="$libs"; break]) 1310done 1311LIBS="$save_LIBS" 1312test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required']) 1313case $gcc_cv_collect2_libs in 1314 "none required") ;; 1315 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;; 1316esac 1317AC_SUBST(COLLECT2_LIBS) 1318 1319# When building Ada code on Alpha, we need exc_resume which is usually in 1320# -lexc. So test for it. 1321save_LIBS="$LIBS" 1322LIBS= 1323AC_SEARCH_LIBS(exc_resume, exc) 1324GNAT_LIBEXC="$LIBS" 1325LIBS="$save_LIBS" 1326AC_SUBST(GNAT_LIBEXC) 1327 1328# To support -mcpu=native on Solaris/SPARC, we need libkstat. 1329save_LIBS="$LIBS" 1330LIBS= 1331AC_SEARCH_LIBS(kstat_open, kstat) 1332EXTRA_GCC_LIBS="$LIBS" 1333LIBS="$save_LIBS" 1334AC_SUBST(EXTRA_GCC_LIBS) 1335 1336# Solaris needs libsocket and libnsl for socket functions before 11.4. 1337# C++ needs those for libcody. 1338save_LIBS="$LIBS" 1339LIBS= 1340AX_LIB_SOCKET_NSL 1341NETLIBS="$LIBS" 1342LIBS="$save_LIBS" 1343AC_SUBST(NETLIBS) 1344 1345# Some systems put ldexp and frexp in libm instead of libc; assume 1346# they're both in the same place. jcf-dump needs them. 1347save_LIBS="$LIBS" 1348LIBS= 1349AC_SEARCH_LIBS(ldexp, m) 1350LDEXP_LIB="$LIBS" 1351LIBS="$save_LIBS" 1352AC_SUBST(LDEXP_LIB) 1353 1354# Some systems need dlopen 1355save_LIBS="$LIBS" 1356LIBS= 1357AC_SEARCH_LIBS(dlopen, dl) 1358DL_LIB="$LIBS" 1359LIBS="$save_LIBS" 1360AC_SUBST(DL_LIB) 1361 1362# Use <inttypes.h> only if it exists, 1363# doesn't clash with <sys/types.h>, declares intmax_t and defines 1364# PRId64 1365AC_MSG_CHECKING(for inttypes.h) 1366AC_CACHE_VAL(gcc_cv_header_inttypes_h, 1367[AC_COMPILE_IFELSE([AC_LANG_PROGRAM( 1368[[#define __STDC_FORMAT_MACROS 1369#include <sys/types.h> 1370#include <inttypes.h>]], 1371 [[intmax_t i = -1; 1372#ifndef PRId64 1373choke me 1374#endif]])], 1375 [gcc_cv_header_inttypes_h=yes], 1376 [gcc_cv_header_inttypes_h=no])]) 1377AC_MSG_RESULT($gcc_cv_header_inttypes_h) 1378if test $gcc_cv_header_inttypes_h = yes; then 1379 AC_DEFINE(HAVE_INTTYPES_H, 1, 1380 [Define if you have a working <inttypes.h> header file.]) 1381fi 1382 1383# Look for the ZSTD package. 1384ZSTD_INCLUDE= 1385ZSTD_LIB= 1386AC_SUBST(ZSTD_INCLUDE) 1387AC_SUBST(ZSTD_LIB) 1388ZSTD_CPPFLAGS= 1389ZSTD_LDFLAGS= 1390AC_SUBST(ZSTD_CPPFLAGS) 1391AC_SUBST(ZSTD_LDFLAGS) 1392AC_ARG_WITH(zstd, 1393 [AS_HELP_STRING([--with-zstd=PATH], 1394 [specify prefix directory for installed zstd library. 1395 Equivalent to --with-zstd-include=PATH/include 1396 plus --with-zstd-lib=PATH/lib])]) 1397AC_ARG_WITH(zstd-include, 1398 [AS_HELP_STRING([--with-zstd-include=PATH], 1399 [specify directory for installed zstd include files])]) 1400AC_ARG_WITH(zstd-lib, 1401 [AS_HELP_STRING([--with-zstd-lib=PATH], 1402 [specify directory for the installed zstd library])]) 1403case "x$with_zstd" in 1404 x) ;; 1405 xno) 1406 ZSTD_INCLUDE= 1407 ZSTD_LIB= 1408 ;; 1409 *) ZSTD_INCLUDE=$with_zstd/include 1410 ZSTD_LIB=$with_zstd/lib 1411 ;; 1412esac 1413 1414if test "x$with_zstd" != xno; then 1415if test "x$with_zstd_include" != x; then 1416 ZSTD_INCLUDE=$with_zstd_include 1417fi 1418if test "x$with_zstd_lib" != x; then 1419 ZSTD_LIB=$with_zstd_lib 1420fi 1421if test "x$ZSTD_INCLUDE" != x \ 1422 && test "x$ZSTD_INCLUDE" != xno; then 1423 ZSTD_CPPFLAGS=-I$ZSTD_INCLUDE 1424fi 1425if test "x$ZSTD_LIB" != x \ 1426 && test "x$ZSTD_LIB" != xno; then 1427 ZSTD_LDFLAGS=-L$ZSTD_LIB 1428fi 1429 1430CXXFLAGS="$CXXFLAGS $ZSTD_CPPFLAGS" 1431LDFLAGS="$LDFLAGS $ZSTD_LDFLAGS" 1432 1433AC_MSG_CHECKING(for zstd.h) 1434AC_CACHE_VAL(gcc_cv_header_zstd_h, 1435# We require version 1.3.0 or later. This is the first version that has 1436# ZSTD_getFrameContentSize. 1437[AC_COMPILE_IFELSE([AC_LANG_PROGRAM( 1438[[#include <zstd.h> 1439#if ZSTD_VERSION_NUMBER < 10300 1440#error "need zstd 1.3.0 or better" 1441#endif]])], 1442 [gcc_cv_header_zstd_h=yes], 1443 [gcc_cv_header_zstd_h=no])]) 1444AC_MSG_RESULT($gcc_cv_header_zstd_h) 1445if test $gcc_cv_header_zstd_h = yes; then 1446 AC_DEFINE(HAVE_ZSTD_H, 1, 1447 [Define if you have a working <zstd.h> header file.]) 1448elif test "x$with_zstd" != x; then 1449 as_fn_error $? "Unable to find zstd.h. See config.log for details." "$LINENO" 5 1450fi 1451 1452# LTO can use zstd compression algorithm 1453save_LIBS="$LIBS" 1454LIBS= 1455AC_SEARCH_LIBS(ZSTD_compress, zstd) 1456ZSTD_LIB="$LIBS" 1457LIBS="$save_LIBS" 1458AC_SUBST(ZSTD_LIB) 1459fi 1460 1461dnl Disabled until we have a complete test for buggy enum bitfields. 1462dnl gcc_AC_C_ENUM_BF_UNSIGNED 1463 1464define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl 1465 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl 1466 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl 1467 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl 1468 putchar_unlocked putc_unlocked) 1469AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \ 1470 popen sysconf strsignal getrusage nl_langinfo \ 1471 gettimeofday mbstowcs wcswidth mmap posix_fallocate setlocale \ 1472 gcc_UNLOCKED_FUNCS madvise mallinfo mallinfo2 fstatat) 1473 1474if test x$ac_cv_func_mbstowcs = xyes; then 1475 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works, 1476[ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h> 1477int main() 1478{ 1479 mbstowcs(0, "", 0); 1480 return 0; 1481}]])], 1482 [gcc_cv_func_mbstowcs_works=yes], 1483 [gcc_cv_func_mbstowcs_works=no], 1484 [gcc_cv_func_mbstowcs_works=yes])]) 1485 if test x$gcc_cv_func_mbstowcs_works = xyes; then 1486 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1, 1487 [Define this macro if mbstowcs does not crash when its 1488 first argument is NULL.]) 1489 fi 1490fi 1491 1492AC_CHECK_TYPE(ssize_t, int) 1493AC_CHECK_TYPE(caddr_t, char *) 1494AC_CHECK_TYPE(sighander_t, 1495 AC_DEFINE(HAVE_SIGHANDLER_T, 1, 1496 [Define if <sys/signal.h> defines sighandler_t]), 1497 ,signal.h) 1498 1499GCC_AC_FUNC_MMAP_BLACKLIST 1500 1501case "${host}" in 1502*-*-*vms*) 1503 # Under VMS, vfork works very differently than on Unix. The standard test 1504 # won't work, and it isn't easily adaptable. It makes more sense to 1505 # just force it. 1506 ac_cv_func_vfork_works=yes 1507 ;; 1508esac 1509AC_FUNC_FORK 1510 1511AM_ICONV 1512 1513# Until we have in-tree GNU iconv: 1514LIBICONV_DEP= 1515if test -f "$LTLIBICONV"; then 1516 LIBICONV_DEP=$LTLIBICONV 1517fi 1518AC_SUBST(LIBICONV_DEP) 1519 1520AM_LC_MESSAGES 1521 1522AM_LANGINFO_CODESET 1523 1524# We will need to find libiberty.h and ansidecl.h 1525saved_CFLAGS="$CFLAGS" 1526CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC" 1527saved_CXXFLAGS="$CXXFLAGS" 1528CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC" 1529 1530# gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the 1531# normal autoconf function for these. But force definition of 1532# HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre 1533# basename handling in libiberty.h. 1534AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[ 1535#undef HAVE_DECL_BASENAME 1536#define HAVE_DECL_BASENAME 1 1537#include "ansidecl.h" 1538#include "system.h"]) 1539 1540gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \ 1541 madvise stpcpy strnlen strsignal strverscmp \ 1542 strtol strtoul strtoll strtoull setenv unsetenv \ 1543 errno snprintf vsnprintf vasprintf malloc realloc calloc \ 1544 free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[ 1545#include "ansidecl.h" 1546#include "system.h"]) 1547 1548gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[ 1549#include "ansidecl.h" 1550#include "system.h" 1551#ifdef HAVE_SYS_RESOURCE_H 1552#include <sys/resource.h> 1553#endif 1554]) 1555 1556gcc_AC_CHECK_DECLS(mallinfo mallinfo2, , ,[ 1557#include "ansidecl.h" 1558#include "system.h" 1559#ifdef HAVE_MALLOC_H 1560#include <malloc.h> 1561#endif 1562]) 1563 1564AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ 1565#include "ansidecl.h" 1566#include "system.h" 1567#ifdef HAVE_SYS_RESOURCE_H 1568#include <sys/resource.h> 1569#endif 1570]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long], 1571[Define to `long' if <sys/resource.h> doesn't define.])]) 1572 1573# On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible 1574# FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname 1575# in collect2.c, <fcntl.h> isn't visible, but the configure test below needs 1576# to undef these macros to get the correct value for HAVE_DECL_LDGETNAME. 1577gcc_AC_CHECK_DECLS(ldgetname, , ,[ 1578#include "ansidecl.h" 1579#include "system.h" 1580#ifdef HAVE_LDFCN_H 1581#undef FREAD 1582#undef FWRITE 1583#include <ldfcn.h> 1584#endif 1585]) 1586 1587gcc_AC_CHECK_DECLS(times, , ,[ 1588#include "ansidecl.h" 1589#include "system.h" 1590#ifdef HAVE_SYS_TIMES_H 1591#include <sys/times.h> 1592#endif 1593]) 1594 1595gcc_AC_CHECK_DECLS(sigaltstack, , ,[ 1596#include "ansidecl.h" 1597#include "system.h" 1598#include <signal.h> 1599]) 1600 1601# More time-related stuff. 1602AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [ 1603AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ 1604#include "ansidecl.h" 1605#include "system.h" 1606#ifdef HAVE_SYS_TIMES_H 1607#include <sys/times.h> 1608#endif 1609]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])]) 1610if test $ac_cv_struct_tms = yes; then 1611 AC_DEFINE(HAVE_STRUCT_TMS, 1, 1612 [Define if <sys/times.h> defines struct tms.]) 1613fi 1614 1615# use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE. 1616# revisit after autoconf 2.50. 1617AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [ 1618AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ 1619#include "ansidecl.h" 1620#include "system.h" 1621]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])]) 1622if test $gcc_cv_type_clock_t = yes; then 1623 AC_DEFINE(HAVE_CLOCK_T, 1, 1624 [Define if <time.h> defines clock_t.]) 1625fi 1626 1627# Check if F_SETLKW is supported by fcntl. 1628AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [ 1629AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ 1630#include <fcntl.h>]], [[ 1631struct flock fl; 1632fl.l_whence = 0; 1633fl.l_start = 0; 1634fl.l_len = 0; 1635fl.l_pid = 0; 1636return fcntl (1, F_SETLKW, &fl);]])], 1637[ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])]) 1638if test $ac_cv_f_setlkw = yes; then 1639 AC_DEFINE(HOST_HAS_F_SETLKW, 1, 1640 [Define if F_SETLKW supported by fcntl.]) 1641fi 1642 1643# Check if O_CLOEXEC is defined by fcntl 1644AC_CACHE_CHECK(for O_CLOEXEC, ac_cv_o_cloexec, [ 1645AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ 1646#include <fcntl.h>]], [[ 1647return open ("/dev/null", O_RDONLY | O_CLOEXEC);]])], 1648[ac_cv_o_cloexec=yes],[ac_cv_o_cloexec=no])]) 1649if test $ac_cv_o_cloexec = yes; then 1650 AC_DEFINE(HOST_HAS_O_CLOEXEC, 1, 1651 [Define if O_CLOEXEC supported by fcntl.]) 1652fi 1653 1654# C++ Modules would like some networking features to provide the mapping 1655# server. You can still use modules without them though. 1656# The following network-related checks could probably do with some 1657# Windows and other non-linux defenses and checking. 1658 1659# Local socket connectivity wants AF_UNIX networking 1660# Check for AF_UNIX networking 1661AC_CACHE_CHECK(for AF_UNIX, ac_cv_af_unix, [ 1662AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ 1663#include <sys/types.h> 1664#include <sys/socket.h> 1665#include <sys/un.h> 1666#include <netinet/in.h>]],[[ 1667sockaddr_un un; 1668un.sun_family = AF_UNSPEC; 1669int fd = socket (AF_UNIX, SOCK_STREAM, 0); 1670connect (fd, (sockaddr *)&un, sizeof (un));]])], 1671[ac_cv_af_unix=yes], 1672[ac_cv_af_unix=no])]) 1673if test $ac_cv_af_unix = yes; then 1674 AC_DEFINE(HAVE_AF_UNIX, 1, 1675 [Define if AF_UNIX supported.]) 1676fi 1677 1678# Remote socket connectivity wants AF_INET6 networking 1679# Check for AF_INET6 networking 1680AC_CACHE_CHECK(for AF_INET6, ac_cv_af_inet6, [ 1681AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ 1682#include <sys/types.h> 1683#include <sys/socket.h> 1684#include <netinet/in.h> 1685#include <netdb.h>]],[[ 1686sockaddr_in6 in6; 1687in6.sin6_family = AF_UNSPEC; 1688struct addrinfo *addrs = 0; 1689struct addrinfo hints; 1690hints.ai_flags = 0; 1691hints.ai_family = AF_INET6; 1692hints.ai_socktype = SOCK_STREAM; 1693hints.ai_protocol = 0; 1694hints.ai_canonname = 0; 1695hints.ai_addr = 0; 1696hints.ai_next = 0; 1697int e = getaddrinfo ("localhost", 0, &hints, &addrs); 1698const char *str = gai_strerror (e); 1699freeaddrinfo (addrs); 1700int fd = socket (AF_INET6, SOCK_STREAM, 0); 1701connect (fd, (sockaddr *)&in6, sizeof (in6));]])], 1702[ac_cv_af_inet6=yes], 1703[ac_cv_af_inet6=no])]) 1704if test $ac_cv_af_inet6 = yes; then 1705 AC_DEFINE(HAVE_AF_INET6, 1, 1706 [Define if AF_INET6 supported.]) 1707fi 1708 1709# Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests. 1710CFLAGS="$saved_CFLAGS" 1711CXXFLAGS="$saved_CXXFLAGS" 1712 1713# mkdir takes a single argument on some systems. 1714gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG 1715 1716# File extensions 1717manext='.1' 1718objext='.o' 1719AC_SUBST(manext) 1720AC_SUBST(objext) 1721 1722# With Setjmp/Longjmp based exception handling. 1723AC_ARG_ENABLE(sjlj-exceptions, 1724[AS_HELP_STRING([--enable-sjlj-exceptions], 1725 [arrange to use setjmp/longjmp exception handling])], 1726[case $target in 1727 *-*-hpux10*) 1728 if test $enableval != yes; then 1729 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced]) 1730 enableval=yes 1731 fi 1732 ;; 1733esac 1734force_sjlj_exceptions=yes], 1735[case $target in 1736 *-*-hpux10*) 1737 force_sjlj_exceptions=yes 1738 enableval=yes 1739 ;; 1740 lm32*-*-*) 1741 force_sjlj_exceptions=yes 1742 enableval=yes 1743 ;; 1744 *) 1745 force_sjlj_exceptions=no 1746 ;; 1747esac]) 1748if test $force_sjlj_exceptions = yes; then 1749 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi` 1750 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj, 1751 [Define 0/1 to force the choice for exception handling model.]) 1752fi 1753 1754# -------------------------------------------------------- 1755# Build, host, and target specific configuration fragments 1756# -------------------------------------------------------- 1757 1758# Collect build-machine-specific information. 1759. ${srcdir}/config.build || exit 1 1760 1761# Collect host-machine-specific information. 1762. ${srcdir}/config.host || exit 1 1763 1764target_gtfiles= 1765 1766# Collect target-machine-specific information. 1767. ${srcdir}/config.gcc || exit 1 1768 1769extra_objs="${host_extra_objs} ${extra_objs}" 1770extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}" 1771 1772# Default the target-machine variables that were not explicitly set. 1773if test x"$tm_file" = x 1774then tm_file=$cpu_type/$cpu_type.h; fi 1775 1776if test x"$extra_headers" = x 1777then extra_headers=; fi 1778 1779if test x$md_file = x 1780then md_file=$cpu_type/$cpu_type.md; fi 1781 1782if test x$out_file = x 1783then out_file=$cpu_type/$cpu_type.c; fi 1784 1785if test x"$tmake_file" = x 1786then tmake_file=$cpu_type/t-$cpu_type 1787fi 1788 1789# Support --enable-initfini-array. 1790if test x$enable_initfini_array != xno; then 1791 tm_file="${tm_file} initfini-array.h" 1792fi 1793 1794if test x"$dwarf2" = xyes 1795then tm_file="$tm_file tm-dwarf2.h" 1796fi 1797 1798# Say what files are being used for the output code and MD file. 1799echo "Using \`$srcdir/config/$out_file' for machine-specific logic." 1800echo "Using \`$srcdir/config/$md_file' as machine description file." 1801 1802# If any of the xm_file variables contain nonexistent files, warn 1803# about them and drop them. 1804 1805bx= 1806for x in $build_xm_file; do 1807 if test -f $srcdir/config/$x 1808 then bx="$bx $x" 1809 else AC_MSG_WARN($srcdir/config/$x does not exist.) 1810 fi 1811done 1812build_xm_file="$bx" 1813 1814hx= 1815for x in $host_xm_file; do 1816 if test -f $srcdir/config/$x 1817 then hx="$hx $x" 1818 else AC_MSG_WARN($srcdir/config/$x does not exist.) 1819 fi 1820done 1821host_xm_file="$hx" 1822 1823tx= 1824for x in $xm_file; do 1825 if test -f $srcdir/config/$x 1826 then tx="$tx $x" 1827 else AC_MSG_WARN($srcdir/config/$x does not exist.) 1828 fi 1829done 1830xm_file="$tx" 1831 1832count=a 1833for f in $tm_file; do 1834 count=${count}x 1835done 1836if test $count = ax; then 1837 echo "Using \`$srcdir/config/$tm_file' as target machine macro file." 1838else 1839 echo "Using the following target machine macro files:" 1840 for f in $tm_file; do 1841 echo " $srcdir/config/$f" 1842 done 1843fi 1844 1845if test x$use_long_long_for_widest_fast_int = xyes; then 1846 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1, 1847[Define to 1 if the 'long long' type is wider than 'long' but still 1848efficiently supported by the host hardware.]) 1849fi 1850 1851gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi` 1852AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.]) 1853 1854gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi` 1855AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.]) 1856 1857count=a 1858for f in $host_xm_file; do 1859 count=${count}x 1860done 1861if test $count = a; then 1862 : 1863elif test $count = ax; then 1864 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file." 1865else 1866 echo "Using the following host machine macro files:" 1867 for f in $host_xm_file; do 1868 echo " $srcdir/config/$f" 1869 done 1870fi 1871echo "Using ${out_host_hook_obj} for host machine hooks." 1872 1873if test "$host_xm_file" != "$build_xm_file"; then 1874 count=a 1875 for f in $build_xm_file; do 1876 count=${count}x 1877 done 1878 if test $count = a; then 1879 : 1880 elif test $count = ax; then 1881 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file." 1882 else 1883 echo "Using the following build machine macro files:" 1884 for f in $build_xm_file; do 1885 echo " $srcdir/config/$f" 1886 done 1887 fi 1888fi 1889 1890if test -n "$configured_native_system_header_dir"; then 1891 native_system_header_dir=$configured_native_system_header_dir 1892fi 1893NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir" 1894AC_SUBST(NATIVE_SYSTEM_HEADER_DIR) 1895 1896case ${host} in 1897 powerpc*-*-darwin*) 1898 AC_CACHE_CHECK([whether mcontext_t fields have underscores], 1899 gcc_cv_mcontext_underscores, 1900 AC_COMPILE_IFELSE([AC_LANG_SOURCE([ 1901#include <sys/cdefs.h> 1902#include <sys/signal.h> 1903#include <ucontext.h> 1904int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; } 1905])], 1906 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes)) 1907 if test $gcc_cv_mcontext_underscores = yes; then 1908 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl 1909 [mcontext_t fields start with __]) 1910 fi 1911 ;; 1912esac 1913 1914# --------- 1915# Threading 1916# --------- 1917 1918# Check if a valid thread package 1919case ${enable_threads} in 1920 "" | no) 1921 # No threads 1922 target_thread_file='single' 1923 ;; 1924 yes) 1925 # default 1926 target_thread_file='single' 1927 ;; 1928 aix | dce | lynx | mipssde | posix | rtems | \ 1929 single | tpf | vxworks | win32) 1930 target_thread_file=${enable_threads} 1931 ;; 1932 *) 1933 echo "${enable_threads} is an unknown thread package" 1>&2 1934 exit 1 1935 ;; 1936esac 1937 1938if test x${thread_file} = x; then 1939 # No thread file set by target-specific clauses in config.gcc, 1940 # so use file chosen by default logic above 1941 thread_file=${target_thread_file} 1942fi 1943 1944# -------- 1945# UNSORTED 1946# -------- 1947 1948use_cxa_atexit=no 1949if test x$enable___cxa_atexit = xyes || \ 1950 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then 1951 if test x$host = x$target; then 1952 case $host in 1953 # mingw32 doesn't have __cxa_atexit but uses atexit registration 1954 # keyed to flag_use_cxa_atexit 1955 *-*-mingw32*) 1956 use_cxa_atexit=yes 1957 ;; 1958 powerpc-ibm-aix*) 1959 use_cxa_atexit=yes 1960 ;; 1961 *) 1962 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes], 1963 [echo "__cxa_atexit can't be enabled on this target"]) 1964 ;; 1965 esac 1966 else 1967 # We can't check for __cxa_atexit when building a cross, so assume 1968 # it is available 1969 use_cxa_atexit=yes 1970 fi 1971 if test x$use_cxa_atexit = xyes; then 1972 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2, 1973 [Define if you want to use __cxa_atexit, rather than atexit, to 1974 register C++ destructors for local statics and global objects. 1975 This is essential for fully standards-compliant handling of 1976 destructors, but requires __cxa_atexit in libc.]) 1977 fi 1978fi 1979 1980# Look for a file containing extra machine modes. 1981if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then 1982 extra_modes_file='$(srcdir)'/config/${extra_modes} 1983 AC_SUBST(extra_modes_file) 1984 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes", 1985 [Define to the name of a file containing a list of extra machine modes 1986 for this architecture.]) 1987fi 1988 1989# Convert extra_options into a form suitable for Makefile use. 1990extra_opt_files= 1991all_opt_files= 1992for f in $extra_options; do 1993 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f" 1994 all_opt_files="$all_opt_files $srcdir/config/$f" 1995done 1996AC_SUBST(extra_opt_files) 1997 1998# auto-host.h is the file containing items generated by autoconf and is 1999# the first file included by config.h. 2000# If host=build, it is correct to have bconfig include auto-host.h 2001# as well. If host!=build, we are in error and need to do more 2002# work to find out the build config parameters. 2003if test x$host = x$build 2004then 2005 build_auto=auto-host.h 2006 HAVE_AUTO_BUILD='# ' 2007else 2008 # We create a subdir, then run autoconf in the subdir. 2009 # To prevent recursion we set host and build for the new 2010 # invocation of configure to the build for this invocation 2011 # of configure. 2012 tempdir=build.$$ 2013 rm -rf $tempdir 2014 mkdir $tempdir 2015 cd $tempdir 2016 case ${srcdir} in 2017 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};; 2018 *) realsrcdir=../${srcdir};; 2019 esac 2020 # Clearing GMPINC is necessary to prevent host headers being 2021 # used by the build compiler. Defining GENERATOR_FILE stops 2022 # system.h from including gmp.h. 2023 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \ 2024 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \ 2025 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \ 2026 GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \ 2027 ${realsrcdir}/configure \ 2028 --enable-languages=${enable_languages-all} \ 2029 ${enable_obsolete+--enable-obsolete="$enable_obsolete"} \ 2030 ${enable_option_checking+--enable-option-checking="$enable_option_checking"} \ 2031 --target=$target_alias --host=$build_alias \ 2032 --build=$build_alias || exit # retaining $tempdir 2033 2034 # We just finished tests for the build machine, so rename 2035 # the file auto-build.h in the gcc directory. 2036 mv auto-host.h ../auto-build.h 2037 cd .. 2038 rm -rf $tempdir 2039 build_auto=auto-build.h 2040 HAVE_AUTO_BUILD= 2041fi 2042AC_SUBST(build_subdir) 2043AC_SUBST(HAVE_AUTO_BUILD) 2044 2045tm_file="${tm_file} defaults.h" 2046tm_p_file="${tm_p_file} tm-preds.h" 2047tm_d_file="${tm_d_file} defaults.h" 2048host_xm_file="auto-host.h ansidecl.h ${host_xm_file}" 2049build_xm_file="${build_auto} ansidecl.h ${build_xm_file}" 2050# We don't want ansidecl.h in target files, write code there in ISO/GNU C. 2051# put this back in temporarily. 2052xm_file="auto-host.h ansidecl.h ${xm_file}" 2053 2054# -------- 2055# UNSORTED 2056# -------- 2057 2058changequote(,)dnl 2059# Compile in configure arguments. 2060if test -f configargs.h ; then 2061 # Being re-configured. 2062 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'` 2063 gcc_reconf_arguments=`echo "$gcc_config_arguments" | sed -e 's/^.*\( : (reconfigured) .*$\)/\1/'` 2064 if [ "$gcc_reconf_arguments" != " : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS" ]; then 2065 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS" 2066 fi 2067else 2068 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS" 2069fi 2070 2071# Double all backslashes and backslash all quotes to turn 2072# gcc_config_arguments into a C string. 2073sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out 2074$gcc_config_arguments 2075EOF 2076gcc_config_arguments_str=`cat conftest.out` 2077rm -f conftest.out 2078 2079cat > configargs.h <<EOF 2080/* Generated automatically. */ 2081static const char configuration_arguments[] = "$gcc_config_arguments_str"; 2082static const char thread_model[] = "$thread_file"; 2083 2084static const struct { 2085 const char *name, *value; 2086} configure_default_options[] = $configure_default_options; 2087EOF 2088changequote([,])dnl 2089 2090changequote(,)dnl 2091gcc_BASEVER=`cat $srcdir/BASE-VER` 2092gcc_DEVPHASE=`cat $srcdir/DEV-PHASE` 2093gcc_DATESTAMP=`cat $srcdir/DATESTAMP` 2094if test -f $srcdir/REVISION ; then 2095 gcc_REVISION=`cat $srcdir/REVISION` 2096else 2097 gcc_REVISION="" 2098fi 2099cat > plugin-version.h <<EOF 2100#include "configargs.h" 2101 2102#define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'` 2103#define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'` 2104#define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'` 2105#define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR) 2106 2107static char basever[] = "$gcc_BASEVER"; 2108static char datestamp[] = "$gcc_DATESTAMP"; 2109static char devphase[] = "$gcc_DEVPHASE"; 2110static char revision[] = "$gcc_REVISION"; 2111 2112/* FIXME plugins: We should make the version information more precise. 2113 One way to do is to add a checksum. */ 2114 2115static struct plugin_gcc_version gcc_version = {basever, datestamp, 2116 devphase, revision, 2117 configuration_arguments}; 2118EOF 2119changequote([,])dnl 2120 2121# Determine what GCC version number to use in filesystem paths. 2122GCC_BASE_VER 2123 2124# Internationalization 2125ZW_GNU_GETTEXT_SISTER_DIR 2126 2127# If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get 2128# -liconv on the link line twice. 2129case "$LIBINTL" in *$LIBICONV*) 2130 LIBICONV= ;; 2131esac 2132 2133AC_ARG_ENABLE(secureplt, 2134[AS_HELP_STRING([--enable-secureplt], 2135 [enable -msecure-plt by default for PowerPC])], 2136[], []) 2137 2138AC_ARG_ENABLE(mingw-wildcard, 2139[AS_HELP_STRING([--enable-mingw-wildcard], 2140 [Set whether to expand wildcard on command-line. 2141 Default to platform configuration])], 2142[],[enable_mingw_wildcard=platform]) 2143AS_IF([test x"$enable_mingw_wildcard" != xplatform ], 2144 [AC_DEFINE_UNQUOTED(MINGW_DOWILDCARD, 2145 $(test x"$enable_mingw_wildcard" = xno; echo $?), 2146 [Value to set mingw's _dowildcard to.])]) 2147 2148AC_ARG_ENABLE(large-address-aware, 2149[AS_HELP_STRING([--enable-large-address-aware], 2150 [Link mingw executables with --large-address-aware])]) 2151AS_IF([test x"$enable_large_address_aware" = xyes], 2152 [AC_DEFINE([MINGW_DEFAULT_LARGE_ADDR_AWARE], 1, 2153 [Define if we should link mingw executables with --large-address-aware])]) 2154 2155AC_ARG_ENABLE(leading-mingw64-underscores, 2156 AS_HELP_STRING([--enable-leading-mingw64-underscores], 2157 [enable leading underscores on 64 bit mingw targets]), 2158 [],[]) 2159AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ], 2160 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1, 2161 [Define if we should use leading underscore on 64 bit mingw targets])]) 2162 2163AC_ARG_ENABLE(cld, 2164[AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [], 2165[enable_cld=no]) 2166 2167AC_ARG_ENABLE(frame-pointer, 2168[AS_HELP_STRING([--enable-frame-pointer], 2169 [enable -fno-omit-frame-pointer by default for x86])], [], 2170[ 2171case $target_os in 2172linux* | gnu* | darwin[[8912]]* | cygwin* | mingw*) 2173 # Enable -fomit-frame-pointer by default for these systems with DWARF2. 2174 enable_frame_pointer=no 2175 ;; 2176*) 2177 enable_frame_pointer=yes 2178 ;; 2179esac 2180]) 2181 2182case $target in 2183i[[34567]]86-*-* | x86_64-*-*) 2184 if test "x$enable_cld" = xyes; then 2185 tm_defines="${tm_defines} USE_IX86_CLD=1" 2186 fi 2187 if test "x$enable_frame_pointer" = xyes; then 2188 tm_defines="${tm_defines} USE_IX86_FRAME_POINTER=1" 2189 fi 2190 ;; 2191esac 2192 2193# Windows32 Registry support for specifying GCC installation paths. 2194AC_ARG_ENABLE(win32-registry, 2195[AS_HELP_STRING([--disable-win32-registry], 2196 [disable lookup of installation paths in the 2197 Registry on Windows hosts]) 2198AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)]) 2199AS_HELP_STRING([--enable-win32-registry=KEY], 2200 [use KEY instead of GCC version as the last portion 2201 of the registry key])],,) 2202 2203case $host_os in 2204 win32 | pe | cygwin* | mingw32*) 2205 if test "x$enable_win32_registry" != xno; then 2206 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no]) 2207 fi 2208 2209 if test "x$enable_win32_registry" != xno; then 2210 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1, 2211 [Define to 1 if installation paths should be looked up in the Windows 2212 Registry. Ignored on non-Windows hosts.]) 2213 2214 if test "x$enable_win32_registry" != xyes \ 2215 && test "x$enable_win32_registry" != x; then 2216 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry", 2217 [Define to be the last component of the Windows registry key under which 2218 to look for installation paths. The full key used will be 2219 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}. 2220 The default is the GCC version number.]) 2221 fi 2222 fi 2223 ;; 2224esac 2225 2226# Get an absolute path to the GCC top-level source directory 2227holddir=`${PWDCMD-pwd}` 2228cd $srcdir 2229topdir=`${PWDCMD-pwd}` 2230cd $holddir 2231 2232# Conditionalize the makefile for this host machine. 2233xmake_file= 2234for f in ${host_xmake_file} 2235do 2236 if test -f ${srcdir}/config/$f 2237 then 2238 xmake_file="${xmake_file} \$(srcdir)/config/$f" 2239 fi 2240done 2241 2242# Conditionalize the makefile for this target machine. 2243tmake_file_= 2244for f in ${tmake_file} 2245do 2246 if test -f ${srcdir}/config/$f 2247 then 2248 tmake_file_="${tmake_file_} \$(srcdir)/config/$f" 2249 fi 2250done 2251tmake_file="${tmake_file_}${omp_device_property_tmake_file}" 2252 2253out_object_file=`basename $out_file .c`.o 2254common_out_object_file=`basename $common_out_file .c`.o 2255 2256tm_file_list="options.h" 2257tm_include_list="options.h insn-constants.h" 2258for f in $tm_file; do 2259 case $f in 2260 ./* ) 2261 f=`echo $f | sed 's/^..//'` 2262 tm_file_list="${tm_file_list} $f" 2263 tm_include_list="${tm_include_list} $f" 2264 ;; 2265 defaults.h ) 2266 tm_file_list="${tm_file_list} \$(srcdir)/$f" 2267 tm_include_list="${tm_include_list} $f" 2268 ;; 2269 * ) 2270 tm_file_list="${tm_file_list} \$(srcdir)/config/$f" 2271 tm_include_list="${tm_include_list} config/$f" 2272 ;; 2273 esac 2274done 2275 2276tm_p_file_list= 2277tm_p_include_list= 2278for f in $tm_p_file; do 2279 case $f in 2280 tm-preds.h ) 2281 tm_p_file_list="${tm_p_file_list} $f" 2282 tm_p_include_list="${tm_p_include_list} $f" 2283 ;; 2284 * ) 2285 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f" 2286 tm_p_include_list="${tm_p_include_list} config/$f" 2287 esac 2288done 2289 2290tm_d_file_list= 2291tm_d_include_list="options.h insn-constants.h" 2292for f in $tm_d_file; do 2293 case $f in 2294 defaults.h ) 2295 tm_d_file_list="${tm_d_file_list} \$(srcdir)/$f" 2296 tm_d_include_list="${tm_d_include_list} $f" 2297 ;; 2298 * ) 2299 tm_d_file_list="${tm_d_file_list} \$(srcdir)/config/$f" 2300 tm_d_include_list="${tm_d_include_list} config/$f" 2301 ;; 2302 esac 2303done 2304 2305xm_file_list= 2306xm_include_list= 2307for f in $xm_file; do 2308 case $f in 2309 ansidecl.h ) 2310 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f" 2311 xm_include_list="${xm_include_list} $f" 2312 ;; 2313 auto-host.h ) 2314 xm_file_list="${xm_file_list} $f" 2315 xm_include_list="${xm_include_list} $f" 2316 ;; 2317 * ) 2318 xm_file_list="${xm_file_list} \$(srcdir)/config/$f" 2319 xm_include_list="${xm_include_list} config/$f" 2320 ;; 2321 esac 2322done 2323 2324host_xm_file_list= 2325host_xm_include_list= 2326for f in $host_xm_file; do 2327 case $f in 2328 ansidecl.h ) 2329 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f" 2330 host_xm_include_list="${host_xm_include_list} $f" 2331 ;; 2332 auto-host.h ) 2333 host_xm_file_list="${host_xm_file_list} $f" 2334 host_xm_include_list="${host_xm_include_list} $f" 2335 ;; 2336 * ) 2337 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f" 2338 host_xm_include_list="${host_xm_include_list} config/$f" 2339 ;; 2340 esac 2341done 2342 2343build_xm_file_list= 2344for f in $build_xm_file; do 2345 case $f in 2346 ansidecl.h ) 2347 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f" 2348 build_xm_include_list="${build_xm_include_list} $f" 2349 ;; 2350 auto-build.h | auto-host.h ) 2351 build_xm_file_list="${build_xm_file_list} $f" 2352 build_xm_include_list="${build_xm_include_list} $f" 2353 ;; 2354 * ) 2355 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f" 2356 build_xm_include_list="${build_xm_include_list} config/$f" 2357 ;; 2358 esac 2359done 2360 2361# Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a 2362# cross-compiler which does not use the native headers and libraries. 2363# Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR. 2364CROSS= AC_SUBST(CROSS) 2365ALL=all.internal AC_SUBST(ALL) 2366SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR) 2367BUILD_SYSTEM_HEADER_DIR=$SYSTEM_HEADER_DIR AC_SUBST(BUILD_SYSTEM_HEADER_DIR) 2368 2369if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x || 2370 test x$build != x$host || test "x$with_build_sysroot" != x; then 2371 if test "x$with_build_sysroot" != x; then 2372 BUILD_SYSTEM_HEADER_DIR=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)' 2373 else 2374 BUILD_SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)' 2375 fi 2376 2377 if test x$host != x$target 2378 then 2379 CROSS="-DCROSS_DIRECTORY_STRUCTURE" 2380 ALL=all.cross 2381 SYSTEM_HEADER_DIR=$BUILD_SYSTEM_HEADER_DIR 2382 elif test "x$TARGET_SYSTEM_ROOT" != x; then 2383 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)' 2384 fi 2385 2386 if test "x$with_build_sysroot" != "x"; then 2387 target_header_dir="${with_build_sysroot}${native_system_header_dir}" 2388 elif test "x$with_sysroot" = x; then 2389 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include" 2390 elif test "x$with_sysroot" = xyes; then 2391 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}" 2392 else 2393 target_header_dir="${with_sysroot}${native_system_header_dir}" 2394 fi 2395else 2396 target_header_dir=${native_system_header_dir} 2397fi 2398 2399# If this is a cross-compiler that does not 2400# have its own set of headers then define 2401# inhibit_libc 2402 2403# If this is using newlib, without having the headers available now, 2404# then define inhibit_libc in LIBGCC2_CFLAGS. 2405# This prevents libgcc2 from containing any code which requires libc 2406# support. 2407: ${inhibit_libc=false} 2408if { { test x$host != x$target && test "x$with_sysroot" = x ; } || 2409 test x$with_newlib = xyes ; } && 2410 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then 2411 inhibit_libc=true 2412fi 2413AC_SUBST(inhibit_libc) 2414 2415# When building gcc with a cross-compiler, we need to adjust things so 2416# that the generator programs are still built with the native compiler. 2417# Also, we cannot run fixincludes. 2418 2419# These are the normal (build=host) settings: 2420CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD) 2421CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD) 2422BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS) 2423BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS) 2424BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS) 2425STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC) 2426 2427BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS)' AC_SUBST(BUILD_NO_PIE_CFLAGS) 2428BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG)' AC_SUBST(BUILD_NO_PIE_FLAG) 2429 2430# And these apply if build != host, or we are generating coverage data 2431if test x$build != x$host || test "x$coverage_flags" != x 2432then 2433 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)' 2434 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)' 2435 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)' 2436 2437 NO_PIE_CFLAGS_FOR_BUILD=${NO_PIE_CFLAGS_FOR_BUILD-${NO_PIE_CFLAGS}} 2438 NO_PIE_FLAG_FOR_BUILD=${NO_PIE_FLAG_FOR_BUILD-${NO_PIE_FLAG}} 2439 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS_FOR_BUILD)' 2440 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG_FOR_BUILD)' 2441fi 2442AC_SUBST(NO_PIE_CFLAGS_FOR_BUILD) 2443AC_SUBST(NO_PIE_FLAG_FOR_BUILD) 2444 2445# Expand extra_headers to include complete path. 2446# This substitutes for lots of t-* files. 2447extra_headers_list= 2448# Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers. 2449for file in ${extra_headers} ; do 2450 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}" 2451done 2452 2453# If use_gcc_tgmath is set, append ginclude/tgmath.h. 2454if test x"$use_gcc_tgmath" = xyes 2455then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h" 2456fi 2457 2458# Define collect2 in Makefile. 2459case $host_can_use_collect2 in 2460 no) collect2= ;; 2461 *) collect2='collect2$(exeext)' ;; 2462esac 2463AC_SUBST([collect2]) 2464 2465# Add a definition of USE_COLLECT2 if system wants one. 2466case $use_collect2 in 2467 no) use_collect2= ;; 2468 "") ;; 2469 *) 2470 host_xm_defines="${host_xm_defines} USE_COLLECT2" 2471 xm_defines="${xm_defines} USE_COLLECT2" 2472 case $host_can_use_collect2 in 2473 no) 2474 AC_MSG_ERROR([collect2 is required but cannot be built on this system]) 2475 ;; 2476 esac 2477 ;; 2478esac 2479 2480AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}", 2481[Define to the name of the LTO plugin DSO that must be 2482 passed to the linker's -plugin=LIB option.]) 2483 2484# --------------------------- 2485# Assembler & linker features 2486# --------------------------- 2487 2488# During stage 2, ld is actually gcc/collect-ld, which is a small script to 2489# discern between when to use prev-ld/ld-new and when to use ld/ld-new. 2490# However when ld-new is first executed from the build tree, libtool will 2491# relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers 2492# to the build tree. While doing this we need to use the previous-stage 2493# linker, or we have an infinite loop. The presence of a shell script as 2494# ld/ld-new, and the fact that the script *uses ld itself*, is what confuses 2495# the gcc/collect-ld script. So we need to know how libtool works, or 2496# exec-tool will fail. 2497 2498m4_defun([_LT_CONFIG_COMMANDS], []) 2499AC_PROG_LIBTOOL 2500AC_SUBST(objdir) 2501AC_SUBST(enable_fast_install) 2502 2503# Identify the assembler which will work hand-in-glove with the newly 2504# built GCC, so that we can examine its features. This is the assembler 2505# which will be driven by the driver program. 2506# 2507# If build != host, and we aren't building gas in-tree, we identify a 2508# build->target assembler and hope that it will have the same features 2509# as the host->target assembler we'll be using. 2510gcc_cv_gas_major_version= 2511gcc_cv_gas_minor_version= 2512gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas 2513 2514m4_pattern_allow([AS_FOR_TARGET])dnl 2515AS_VAR_SET_IF(gcc_cv_as,, [ 2516if test -x "$DEFAULT_ASSEMBLER"; then 2517 gcc_cv_as="$DEFAULT_ASSEMBLER" 2518elif test -f $gcc_cv_as_gas_srcdir/configure.ac \ 2519 && test -f ../gas/Makefile \ 2520 && test x$build = x$host; then 2521 gcc_cv_as=../gas/as-new$build_exeext 2522elif test -x as$build_exeext; then 2523 # Build using assembler in the current directory. 2524 gcc_cv_as=./as$build_exeext 2525elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then 2526 gcc_cv_as="$AS_FOR_TARGET" 2527else 2528 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET) 2529fi]) 2530 2531ORIGINAL_AS_FOR_TARGET=$gcc_cv_as 2532AC_SUBST(ORIGINAL_AS_FOR_TARGET) 2533case "$ORIGINAL_AS_FOR_TARGET" in 2534 ./as | ./as$build_exeext) ;; 2535 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;; 2536esac 2537 2538AC_MSG_CHECKING(what assembler to use) 2539if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then 2540 # Single tree build which includes gas. We want to prefer it 2541 # over whatever linker top-level may have detected, since 2542 # we'll use what we're building after installation anyway. 2543 AC_MSG_RESULT(newly built gas) 2544 in_tree_gas=yes 2545 _gcc_COMPUTE_GAS_VERSION 2546 in_tree_gas_is_elf=no 2547 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \ 2548 || (grep 'obj_format = multi' ../gas/Makefile \ 2549 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null 2550 then 2551 in_tree_gas_is_elf=yes 2552 fi 2553else 2554 AC_MSG_RESULT($gcc_cv_as) 2555 in_tree_gas=no 2556fi 2557 2558default_ld= 2559AC_ARG_ENABLE(ld, 2560[[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]], 2561[case "${enableval}" in 2562 no) 2563 default_ld=ld.gold 2564 ;; 2565 esac]) 2566 2567install_gold_as_default=no 2568AC_ARG_ENABLE(gold, 2569[[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]], 2570[case "${enableval}" in 2571 default) 2572 install_gold_as_default=yes 2573 ;; 2574 yes) 2575 if test x${default_ld} != x; then 2576 install_gold_as_default=yes 2577 fi 2578 ;; 2579 no) 2580 ;; 2581 *) 2582 AC_MSG_ERROR([invalid --enable-gold argument]) 2583 ;; 2584 esac]) 2585 2586# Identify the linker which will work hand-in-glove with the newly 2587# built GCC, so that we can examine its features. This is the linker 2588# which will be driven by the driver program. 2589# 2590# If build != host, and we aren't building gas in-tree, we identify a 2591# build->target linker and hope that it will have the same features 2592# as the host->target linker we'll be using. 2593gcc_cv_gld_major_version= 2594gcc_cv_gld_minor_version= 2595gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld 2596gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold 2597gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd 2598 2599AS_VAR_SET_IF(gcc_cv_ld,, [ 2600if test -x "$DEFAULT_LINKER"; then 2601 gcc_cv_ld="$DEFAULT_LINKER" 2602elif test $install_gold_as_default = yes \ 2603 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \ 2604 && test -f ../gold/Makefile \ 2605 && test x$build = x$host; then 2606 gcc_cv_ld=../gold/ld-new$build_exeext 2607elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \ 2608 && test -f ../ld/Makefile \ 2609 && test x$build = x$host; then 2610 gcc_cv_ld=../ld/ld-new$build_exeext 2611elif test -x collect-ld$build_exeext; then 2612 # Build using linker in the current directory. 2613 gcc_cv_ld=./collect-ld$build_exeext 2614elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then 2615 gcc_cv_ld="$LD_FOR_TARGET" 2616else 2617 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET) 2618fi]) 2619 2620ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld 2621PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"` 2622# if the PLUGIN_LD is set ld-new, just have it as ld 2623# as that is the installed named. 2624if test x$PLUGIN_LD_SUFFIX = xld-new \ 2625 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then 2626 PLUGIN_LD_SUFFIX=ld 2627fi 2628AC_ARG_WITH(plugin-ld, 2629[AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])], 2630[if test x"$withval" != x; then 2631 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval" 2632 PLUGIN_LD_SUFFIX="$withval" 2633 fi]) 2634AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET) 2635AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker]) 2636 2637# Check to see if we are using gold instead of ld 2638AC_MSG_CHECKING(whether we are using gold) 2639ld_is_gold=no 2640if test x$gcc_cv_ld != x; then 2641 if $gcc_cv_ld --version 2>/dev/null | sed 1q \ 2642 | grep "GNU gold" > /dev/null; then 2643 ld_is_gold=yes 2644 fi 2645fi 2646AC_MSG_RESULT($ld_is_gold) 2647 2648AC_MSG_CHECKING(gold linker with split stack support as non default) 2649# Check to see if default ld is not gold, but gold is 2650# available and has support for split stack. If gcc was configured 2651# with gold then no checking is done. 2652# 2653if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then 2654 2655# For platforms other than powerpc64*, enable as appropriate. 2656 2657 gold_non_default=no 2658 ld_gold=`which ${gcc_cv_ld}.gold` 2659# Make sure this gold has minimal split stack support 2660 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then 2661 ld_vers=`$ld_gold --version | sed 1q` 2662 gold_vers=`echo $ld_vers | sed -n \ 2663 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'` 2664 case $target in 2665# check that the gold version contains the complete split stack support 2666# on powerpc64 big and little endian 2667 powerpc64*-*-*) 2668 case "$gold_vers" in 2669 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes 2670 ;; 2671 *) gold_non_default=no 2672 ;; 2673 esac 2674 ;; 2675 esac 2676 fi 2677 if test $gold_non_default = yes; then 2678 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1, 2679 [Define if the gold linker supports split stack and is available as a non-default]) 2680 fi 2681fi 2682AC_MSG_RESULT($gold_non_default) 2683 2684ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld 2685AC_SUBST(ORIGINAL_LD_FOR_TARGET) 2686case "$ORIGINAL_LD_FOR_TARGET" in 2687 ./collect-ld | ./collect-ld$build_exeext) ;; 2688 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;; 2689esac 2690 2691AC_MSG_CHECKING(what linker to use) 2692if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \ 2693 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then 2694 # Single tree build which includes ld. We want to prefer it 2695 # over whatever linker top-level may have detected, since 2696 # we'll use what we're building after installation anyway. 2697 AC_MSG_RESULT(newly built ld) 2698 in_tree_ld=yes 2699 in_tree_ld_is_elf=no 2700 if (grep 'EMUL = .*elf' ../ld/Makefile \ 2701 || grep 'EMUL = .*linux' ../ld/Makefile \ 2702 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then 2703 in_tree_ld_is_elf=yes 2704 elif test "$ld_is_gold" = yes; then 2705 in_tree_ld_is_elf=yes 2706 fi 2707 for f in $gcc_cv_ld_bfd_srcdir/configure $gcc_cv_ld_gld_srcdir/configure $gcc_cv_ld_gld_srcdir/configure.ac $gcc_cv_ld_gld_srcdir/Makefile.in 2708 do 2709changequote(,)dnl 2710 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f` 2711 if test x$gcc_cv_gld_version != x; then 2712 break 2713 fi 2714 done 2715 case $gcc_cv_gld_version in 2716 VERSION=[0-9]*) ;; 2717changequote([,])dnl 2718 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;; 2719changequote(,)dnl 2720 esac 2721 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"` 2722 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"` 2723changequote([,])dnl 2724 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext 2725 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext 2726else 2727 AC_MSG_RESULT($gcc_cv_ld) 2728 in_tree_ld=no 2729 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext` 2730 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext 2731 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext 2732fi 2733 2734AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET) 2735AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET) 2736 2737# Figure out what nm we will be using. 2738gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils 2739AS_VAR_SET_IF(gcc_cv_nm,, [ 2740if test -f $gcc_cv_binutils_srcdir/configure.ac \ 2741 && test -f ../binutils/Makefile \ 2742 && test x$build = x$host; then 2743 gcc_cv_nm=../binutils/nm-new$build_exeext 2744elif test -x nm$build_exeext; then 2745 gcc_cv_nm=./nm$build_exeext 2746elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then 2747 gcc_cv_nm="$NM_FOR_TARGET" 2748else 2749 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET) 2750fi]) 2751 2752AC_MSG_CHECKING(what nm to use) 2753if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then 2754 # Single tree build which includes binutils. 2755 AC_MSG_RESULT(newly built nm) 2756 in_tree_nm=yes 2757else 2758 AC_MSG_RESULT($gcc_cv_nm) 2759 in_tree_nm=no 2760fi 2761 2762ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm 2763AC_SUBST(ORIGINAL_NM_FOR_TARGET) 2764case "$ORIGINAL_NM_FOR_TARGET" in 2765 ./nm | ./nm$build_exeext) ;; 2766 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;; 2767esac 2768 2769 2770# Figure out what objdump we will be using. 2771AS_VAR_SET_IF(gcc_cv_objdump,, [ 2772if test -f $gcc_cv_binutils_srcdir/configure.ac \ 2773 && test -f ../binutils/Makefile \ 2774 && test x$build = x$host; then 2775 # Single tree build which includes binutils. 2776 gcc_cv_objdump=../binutils/objdump$build_exeext 2777elif test -x objdump$build_exeext; then 2778 gcc_cv_objdump=./objdump$build_exeext 2779elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then 2780 gcc_cv_objdump="$OBJDUMP_FOR_TARGET" 2781else 2782 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET) 2783fi]) 2784 2785AC_MSG_CHECKING(what objdump to use) 2786if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then 2787 # Single tree build which includes binutils. 2788 AC_MSG_RESULT(newly built objdump) 2789elif test x$gcc_cv_objdump = x; then 2790 AC_MSG_RESULT(not found) 2791else 2792 AC_MSG_RESULT($gcc_cv_objdump) 2793fi 2794 2795# Figure out what readelf we will be using. 2796AS_VAR_SET_IF(gcc_cv_readelf,, [ 2797if test -f $gcc_cv_binutils_srcdir/configure.ac \ 2798 && test -f ../binutils/Makefile \ 2799 && test x$build = x$host; then 2800 # Single tree build which includes binutils. 2801 gcc_cv_readelf=../binutils/readelf$build_exeext 2802elif test -x readelf$build_exeext; then 2803 gcc_cv_readelf=./readelf$build_exeext 2804elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then 2805 gcc_cv_readelf="$READELF_FOR_TARGET" 2806else 2807 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET) 2808fi]) 2809 2810AC_MSG_CHECKING(what readelf to use) 2811if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then 2812 # Single tree build which includes binutils. 2813 AC_MSG_RESULT(newly built readelf) 2814elif test x$gcc_cv_readelf = x; then 2815 AC_MSG_RESULT(not found) 2816else 2817 AC_MSG_RESULT($gcc_cv_readelf) 2818fi 2819 2820# Figure out what otool we will be using. 2821AS_VAR_SET_IF(gcc_cv_otool,, [ 2822if test -x otool$build_exeext; then 2823 gcc_cv_otool=./otool$build_exeext 2824elif ( set dummy $OTOOL_FOR_TARGET; test -x $[2] ); then 2825 gcc_cv_otool="$OTOOL_FOR_TARGET" 2826else 2827 AC_PATH_PROG(gcc_cv_otool, $OTOOL_FOR_TARGET) 2828fi]) 2829 2830AC_MSG_CHECKING(what otool to use) 2831if test x$gcc_cv_otool = x; then 2832 AC_MSG_RESULT(not found) 2833else 2834 AC_MSG_RESULT($gcc_cv_otool) 2835fi 2836 2837# Figure out what assembler alignment features are present. 2838gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align, 2839 [2,6,0],, 2840[.balign 4 2841.p2align 2],, 2842[AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1, 2843 [Define if your assembler supports .balign and .p2align.])]) 2844 2845gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align, 2846 [2,8,0],, 2847 [.p2align 4,,7],, 2848[AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1, 2849 [Define if your assembler supports specifying the maximum number 2850 of bytes to skip when using the GAS .p2align command.])]) 2851 2852gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16, 2853 [2,8,0],, 2854 [.literal16],, 2855[AC_DEFINE(HAVE_GAS_LITERAL16, 1, 2856 [Define if your assembler supports .literal16.])]) 2857 2858gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1, 2859 [elf,2,9,0],, 2860 [conftest_label1: .word 0 2861.subsection -1 2862conftest_label2: .word 0 2863.previous], 2864 [if test x$gcc_cv_nm != x; then 2865 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1 2866 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2 2867 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1 2868 then : 2869 else gcc_cv_as_subsection_m1=yes 2870 fi 2871 rm -f conftest.nm1 conftest.nm2 2872 fi], 2873 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1, 2874 [Define if your assembler supports .subsection and .subsection -1 starts 2875 emitting at the beginning of your section.])]) 2876 2877gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak, 2878 [2,2,0],, 2879 [ .weak foobar],, 2880[AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])]) 2881 2882gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref, 2883 [2,17,0],, 2884 [ .weakref foobar, barfnot],, 2885[AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])]) 2886 2887gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat, 2888 [2,15,91],, 2889 [ .SPACE $TEXT$ 2890 .NSUBSPA $CODE$,COMDAT],, 2891[AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])]) 2892 2893# .hidden needs to be supported in both the assembler and the linker, 2894# because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN. 2895# This is irritatingly difficult to feature test for; we have to check the 2896# date string after the version number. If we've got an in-tree 2897# ld, we don't know its patchlevel version, so we set the baseline at 2.13 2898# to be safe. 2899# The gcc_GAS_CHECK_FEATURE call just sets a cache variable. 2900case "${target}" in 2901 *-*-aix*) 2902 conftest_s=' .globl foobar,hidden' 2903 ;; 2904 *) 2905 conftest_s=' .hidden foobar 2906foobar:' 2907 ;; 2908esac 2909gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden, 2910 [elf,2,13,0],, [$conftest_s]) 2911case "${target}" in 2912 *-*-darwin*) 2913 # Darwin as has some visibility support, though with a different syntax. 2914 gcc_cv_as_hidden=yes 2915 ;; 2916esac 2917 2918# gnu_indirect_function type is an extension proposed at 2919# http://groups.google/com/group/generic-abi/files. It allows dynamic runtime 2920# selection of function implementation 2921AC_ARG_ENABLE(gnu-indirect-function, 2922 [AS_HELP_STRING([--enable-gnu-indirect-function], 2923 [enable the use of the @gnu_indirect_function to glibc systems])], 2924 [case $enable_gnu_indirect_function in 2925 yes | no) ;; 2926 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function. 2927Valid choices are 'yes' and 'no'.]) ;; 2928 esac], 2929 [enable_gnu_indirect_function="$default_gnu_indirect_function"]) 2930 2931case "${target}" in 2932 riscv*-*-linux*) 2933 AC_MSG_CHECKING(linker ifunc IRELATIVE support) 2934 cat > conftest.s <<EOF 2935 .text 2936 .type foo_resolver, @function 2937foo_resolver: 2938 ret 2939 .size foo_resolver, .-foo_resolver 2940 2941 .globl foo 2942 .type foo, %gnu_indirect_function 2943 .set foo, foo_resolver 2944 2945 .globl bar 2946 .type bar, @function 2947bar: 2948 call foo 2949 ret 2950 .size bar, .-bar 2951EOF 2952 if test x$gcc_cv_as != x \ 2953 && test x$gcc_cv_ld != x \ 2954 && test x$gcc_cv_readelf != x \ 2955 && $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \ 2956 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1 \ 2957 && $gcc_cv_readelf --relocs --wide conftest \ 2958 | grep R_RISCV_IRELATIVE > /dev/null 2>&1; then 2959 enable_gnu_indirect_function=yes 2960 fi 2961 rm -f conftest conftest.o conftest.s 2962 AC_MSG_RESULT($enable_gnu_indirect_function) 2963 ;; 2964esac 2965 2966gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi` 2967AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif, 2968[Define if your system supports gnu indirect functions.]) 2969 2970 2971changequote(,)dnl 2972if test $in_tree_ld != yes ; then 2973 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q` 2974 if echo "$ld_ver" | grep GNU > /dev/null; then 2975 if test x"$ld_is_gold" = xyes; then 2976 # GNU gold --version looks like this: 2977 # 2978 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11 2979 # 2980 # We extract the binutils version which is more familiar and specific 2981 # than the gold version. 2982 ld_vers=`echo $ld_ver | sed -n \ 2983 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'` 2984 else 2985 # GNU ld --version looks like this: 2986 # 2987 # GNU ld (GNU Binutils) 2.21.51.20110225 2988 ld_vers=`echo $ld_ver | sed -n \ 2989 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'` 2990 fi 2991 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)\(-*\)\([01][0-9]\)\2\([0-3][0-9]\).*$,\1\3\4,p'` 2992 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'` 2993 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'` 2994 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'` 2995 else 2996 case "${target}" in 2997 *-*-solaris2*) 2998 # Solaris 2 ld -V output looks like this for a regular version: 2999 # 3000 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699 3001 # 3002 # but test versions add stuff at the end: 3003 # 3004 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10 3005 # 3006 # ld and ld.so.1 are guaranteed to be updated in lockstep, so ld version 3007 # numbers can be used in ld.so.1 feature checks even if a different 3008 # linker is configured. 3009 ld_ver=`$gcc_cv_ld -V 2>&1` 3010 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then 3011 ld_vers=`echo $ld_ver | sed -n \ 3012 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'` 3013 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'` 3014 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'` 3015 fi 3016 ;; 3017 esac 3018 fi 3019fi 3020changequote([,])dnl 3021 3022AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden, 3023[[if test $in_tree_ld = yes ; then 3024 gcc_cv_ld_hidden=no 3025 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \ 3026 && test $in_tree_ld_is_elf = yes; then 3027 gcc_cv_ld_hidden=yes 3028 fi 3029else 3030 gcc_cv_ld_hidden=yes 3031 if test x"$ld_is_gold" = xyes; then 3032 : 3033 elif echo "$ld_ver" | grep GNU > /dev/null; then 3034 if test 0"$ld_date" -lt 20020404; then 3035 if test -n "$ld_date"; then 3036 # If there was date string, but was earlier than 2002-04-04, fail 3037 gcc_cv_ld_hidden=no 3038 elif test -z "$ld_vers"; then 3039 # If there was no date string nor ld version number, something is wrong 3040 gcc_cv_ld_hidden=no 3041 else 3042 test -z "$ld_vers_patch" && ld_vers_patch=0 3043 if test "$ld_vers_major" -lt 2; then 3044 gcc_cv_ld_hidden=no 3045 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then 3046 gcc_cv_ld_hidden="no" 3047 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then 3048 gcc_cv_ld_hidden=no 3049 fi 3050 fi 3051 fi 3052 else 3053 case "${target}" in 3054 *-*-aix[789]*) 3055 gcc_cv_ld_hidden=yes 3056 ;; 3057 *-*-darwin*) 3058 # Darwin ld has some visibility support. 3059 gcc_cv_ld_hidden=yes 3060 ;; 3061 hppa64*-*-hpux* | ia64*-*-hpux*) 3062 gcc_cv_ld_hidden=yes 3063 ;; 3064 *-*-solaris2*) 3065 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but 3066 # .symbolic was only added in Solaris 9 12/02. 3067 gcc_cv_ld_hidden=yes 3068 ;; 3069 *) 3070 gcc_cv_ld_hidden=no 3071 ;; 3072 esac 3073 fi 3074fi]]) 3075libgcc_visibility=no 3076AC_SUBST(libgcc_visibility) 3077GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN]) 3078if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then 3079 libgcc_visibility=yes 3080 AC_DEFINE(HAVE_GAS_HIDDEN, 1, 3081 [Define if your assembler and linker support .hidden.]) 3082fi 3083 3084AC_MSG_CHECKING(linker read-only and read-write section mixing) 3085gcc_cv_ld_ro_rw_mix=unknown 3086if test $in_tree_ld = yes ; then 3087 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \ 3088 && test $in_tree_ld_is_elf = yes; then 3089 gcc_cv_ld_ro_rw_mix=read-write 3090 fi 3091elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then 3092 echo '.section myfoosect, "a"' > conftest1.s 3093 echo '.section myfoosect, "aw"' > conftest2.s 3094 echo '.byte 1' >> conftest2.s 3095 echo '.section myfoosect, "a"' > conftest3.s 3096 echo '.byte 0' >> conftest3.s 3097 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \ 3098 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \ 3099 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \ 3100 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \ 3101 conftest2.o conftest3.o > /dev/null 2>&1; then 3102 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \ 3103 | sed -e '/myfoosect/!d' -e N` 3104 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then 3105 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then 3106 gcc_cv_ld_ro_rw_mix=read-only 3107 else 3108 gcc_cv_ld_ro_rw_mix=read-write 3109 fi 3110 fi 3111 fi 3112changequote(,)dnl 3113 rm -f conftest.* conftest[123].* 3114changequote([,])dnl 3115fi 3116if test x$gcc_cv_ld_ro_rw_mix = xread-write; then 3117 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1, 3118 [Define if your linker links a mix of read-only 3119 and read-write sections into a read-write section.]) 3120fi 3121AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix) 3122 3123gcc_AC_INITFINI_ARRAY 3124 3125# Check if we have .[us]leb128, and support symbol arithmetic with it. 3126# Older versions of GAS and some non-GNU assemblers, have a bugs handling 3127# these directives, even when they appear to accept them. 3128gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128, 3129 [elf,2,11,0],, 3130[ .data 3131 .uleb128 L2 - L1 3132L1: 3133 .uleb128 1280 3134 .sleb128 -1010 3135L2: 3136 .uleb128 0x8000000000000000 3137], 3138[[ 3139if test "x$gcc_cv_objdump" != x; then 3140 if $gcc_cv_objdump -s conftest.o 2>/dev/null \ 3141 | grep '04800a8e 78808080 80808080 808001' >/dev/null; then 3142 gcc_cv_as_leb128=yes 3143 fi 3144elif test "x$gcc_cv_otool" != x; then 3145 if $gcc_cv_otool -d conftest.o 2>/dev/null \ 3146 | grep '04 80 0a 8e 78 80 80 80 80 80 80 80 80 80 01' >/dev/null; then 3147 gcc_cv_as_leb128=yes 3148 fi 3149else 3150 # play safe, assume the assembler is broken. 3151 : 3152fi 3153]], 3154 [AC_DEFINE(HAVE_AS_LEB128, 1, 3155 [Define if your assembler supports .sleb128 and .uleb128.])], 3156 [AC_DEFINE(HAVE_AS_LEB128, 0, 3157 [Define if your assembler supports .sleb128 and .uleb128.])]) 3158 3159# Determine if an .eh_frame section is read-only. 3160gcc_fn_eh_frame_ro () { 3161 $gcc_cv_as $1 -o conftest.o conftest.s > /dev/null 2>&1 && \ 3162 $gcc_cv_objdump -h conftest.o 2>/dev/null | \ 3163 sed -e '/.eh_frame/!d' -e N | grep READONLY > /dev/null 3164} 3165 3166# Check if we have assembler support for unwind directives. 3167gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive, 3168 ,, 3169[ .text 3170 .cfi_startproc 3171 .cfi_offset 0, 0 3172 .cfi_same_value 1 3173 .cfi_def_cfa 1, 2 3174 .cfi_escape 1, 2, 3, 4, 5 3175 .cfi_endproc], 3176[case "$target" in 3177 *-*-solaris*) 3178 # If the linker used on Solaris (like Sun ld) isn't capable of merging 3179 # read-only and read-write sections, we need to make sure that the 3180 # assembler used emits read-write .eh_frame sections. 3181 if test "x$gcc_cv_ld_ro_rw_mix" = xread-write; then 3182 gcc_cv_as_cfi_directive=yes 3183 elif test "x$gcc_cv_objdump" = x; then 3184 # No objdump, err on the side of caution. 3185 gcc_cv_as_cfi_directive=no 3186 else 3187 if test x$gas = xyes; then 3188 as_32_opt="--32" 3189 as_64_opt="--64" 3190 else 3191 as_32_opt="-m32" 3192 as_64_opt="-m64" 3193 fi 3194 case "$target" in 3195 sparc*-*-solaris2.*) 3196 # On Solaris/SPARC, .eh_frame sections should always be read-write. 3197 if gcc_fn_eh_frame_ro $as_32_opt \ 3198 || gcc_fn_eh_frame_ro $as_64_opt; then 3199 gcc_cv_as_cfi_directive=no 3200 else 3201 gcc_cv_as_cfi_directive=yes 3202 fi 3203 ;; 3204 i?86-*-solaris2.* | x86_64-*-solaris2.*) 3205 # On Solaris/x86, make sure that GCC and assembler agree on using 3206 # read-only .eh_frame sections for 64-bit. 3207 if gcc_fn_eh_frame_ro $as_32_opt; then 3208 gcc_cv_as_cfi_directive=no 3209 elif gcc_fn_eh_frame_ro $as_64_opt; then 3210 gcc_cv_as_cfi_directive=yes 3211 else 3212 gcc_cv_as_cfi_directive=no 3213 fi 3214 ;; 3215 esac 3216 fi 3217 ;; 3218 *-*-*) 3219 gcc_cv_as_cfi_directive=yes 3220 ;; 3221esac]) 3222if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then 3223gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working, 3224 ,, 3225[ .text 3226 .cfi_startproc 3227 .cfi_adjust_cfa_offset 64 3228 .skip 75040, 0 3229 .cfi_adjust_cfa_offset 128 3230 .cfi_endproc], 3231[[ 3232if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \ 3233 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then 3234 gcc_cv_as_cfi_advance_working=yes 3235fi 3236]]) 3237else 3238 # no objdump, err on the side of caution 3239 gcc_cv_as_cfi_advance_working=no 3240fi 3241GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE) 3242AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE, 3243 [`if test $gcc_cv_as_cfi_directive = yes \ 3244 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`], 3245 [Define 0/1 if your assembler supports CFI directives.]) 3246 3247GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE) 3248gcc_GAS_CHECK_FEATURE([cfi personality directive], 3249 gcc_cv_as_cfi_personality_directive, ,, 3250[ .text 3251 .cfi_startproc 3252 .cfi_personality 0, symbol 3253 .cfi_endproc]) 3254AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE, 3255 [`if test $gcc_cv_as_cfi_personality_directive = yes; then echo 1; else echo 0; fi`], 3256 [Define 0/1 if your assembler supports .cfi_personality.]) 3257 3258gcc_GAS_CHECK_FEATURE([cfi sections directive], 3259 gcc_cv_as_cfi_sections_directive, ,, 3260[ .text 3261 .cfi_sections .debug_frame, .eh_frame 3262 .cfi_startproc 3263 .cfi_endproc], 3264[case $target_os in 3265 win32 | pe | cygwin* | mingw32*) 3266 # Need to check that we generated the correct relocation for the 3267 # .debug_frame section. This was fixed for binutils 2.21. 3268 gcc_cv_as_cfi_sections_directive=no 3269 if test "x$gcc_cv_objdump" != x; then 3270 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \ 3271 grep secrel > /dev/null; then 3272 gcc_cv_as_cfi_sections_directive=yes 3273 fi 3274 fi 3275 ;; 3276 *) 3277 gcc_cv_as_cfi_sections_directive=yes 3278 ;; 3279esac]) 3280GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE) 3281AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE, 3282 [`if test $gcc_cv_as_cfi_sections_directive = yes; then echo 1; else echo 0; fi`], 3283 [Define 0/1 if your assembler supports .cfi_sections.]) 3284 3285# GAS versions up to and including 2.11.0 may mis-optimize 3286# .eh_frame data. 3287gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame, 3288 [elf,2,12,0],, 3289[ .text 3290.LFB1: 3291 .4byte 0 3292.L1: 3293 .4byte 0 3294.LFE1: 3295 .section .eh_frame,"aw",@progbits 3296__FRAME_BEGIN__: 3297 .4byte .LECIE1-.LSCIE1 3298.LSCIE1: 3299 .4byte 0x0 3300 .byte 0x1 3301 .ascii "z\0" 3302 .byte 0x1 3303 .byte 0x78 3304 .byte 0x1a 3305 .byte 0x0 3306 .byte 0x4 3307 .4byte 1 3308 .p2align 1 3309.LECIE1: 3310.LSFDE1: 3311 .4byte .LEFDE1-.LASFDE1 3312.LASFDE1: 3313 .4byte .LASFDE1-__FRAME_BEGIN__ 3314 .4byte .LFB1 3315 .4byte .LFE1-.LFB1 3316 .byte 0x4 3317 .4byte .LFE1-.LFB1 3318 .byte 0x4 3319 .4byte .L1-.LFB1 3320.LEFDE1:], 3321[ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@. 3322cat > conftest.lit <<EOF 3323 0000 10000000 00000000 017a0001 781a0004 .........z..x... 3324 0010 01000000 12000000 18000000 00000000 ................ 3325 0020 08000000 04080000 0044 .........D @&t@ 3326EOF 3327cat > conftest.big <<EOF 3328 0000 00000010 00000000 017a0001 781a0004 .........z..x... 3329 0010 00000001 00000012 00000018 00000000 ................ 3330 0020 00000008 04000000 0844 .........D @&t@ 3331EOF 3332 # If the assembler didn't choke, and we can objdump, 3333 # and we got the correct data, then succeed. 3334 # The text in the here-document typically retains its unix-style line 3335 # endings, while the output of objdump will use host line endings. 3336 # Therefore, use diff -b for the comparisons. 3337 if test x$gcc_cv_objdump != x \ 3338 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \ 3339 | tail -3 > conftest.got \ 3340 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \ 3341 || diff -b conftest.big conftest.got > /dev/null 2>&1; } 3342 then 3343 gcc_cv_as_eh_frame=yes 3344 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then 3345 gcc_cv_as_eh_frame=buggy 3346 else 3347 # Uh oh, what do we do now? 3348 gcc_cv_as_eh_frame=no 3349 fi]) 3350 3351if test $gcc_cv_as_eh_frame = buggy; then 3352 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1, 3353 [Define if your assembler mis-optimizes .eh_frame data.]) 3354fi 3355 3356# Test if the assembler supports the section flag 'e' or #exclude for 3357# specifying an excluded section. 3358gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_e, 3359 [2,22,51], [--fatal-warnings], 3360 [.section foo1,"e" 3361 .byte 0,0,0,0]) 3362if test $gcc_cv_as_section_exclude_e = no; then 3363 case "${target}" in 3364 # Solaris as uses #exclude instead. 3365 *-*-solaris2*) 3366 case "${target}" in 3367 sparc*-*-solaris2*) 3368 conftest_s='.section "foo1", #exclude' 3369 ;; 3370 i?86-*-solaris2* | x86_64-*-solaris2*) 3371 conftest_s='.section foo1, #exclude' 3372 ;; 3373 esac 3374 ;; 3375 esac 3376 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_hash,,, 3377 [$conftest_s 3378 .byte 0,0,0,0]) 3379fi 3380AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE, 3381 [`if test $gcc_cv_as_section_exclude_e = yes || test $gcc_cv_as_section_exclude_hash = yes; then echo 1; else echo 0; fi`], 3382[Define if your assembler supports specifying the exclude section flag.]) 3383 3384# Test if the assembler supports the section flag 'R' for specifying 3385# section with SHF_GNU_RETAIN. 3386case "${target}" in 3387 # Solaris may use GNU assembler with Solairs ld. Even if GNU 3388 # assembler supports the section flag 'R', it doesn't mean that 3389 # Solairs ld supports it. 3390 *-*-solaris2*) 3391 gcc_cv_as_shf_gnu_retain=no 3392 ;; 3393 *) 3394 gcc_GAS_CHECK_FEATURE([section 'R' flag], gcc_cv_as_shf_gnu_retain, 3395 [elf,2,36,0], [--fatal-warnings], 3396 [.section .foo,"awR",%progbits 3397.byte 0]) 3398 ;; 3399esac 3400AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_GNU_RETAIN, 3401 [`if test $gcc_cv_as_shf_gnu_retain = yes; then echo 1; else echo 0; fi`], 3402 [Define 0/1 if your assembler supports marking sections with SHF_GNU_RETAIN flag.]) 3403 3404# Test if the assembler supports the section flag 'o' for specifying 3405# section with link-order. 3406case "${target}" in 3407 # Solaris may use GNU assembler with Solairs ld. Even if GNU 3408 # assembler supports the section flag 'o', it doesn't mean that 3409 # Solairs ld supports it. 3410 *-*-solaris2*) 3411 gcc_cv_as_section_link_order=no 3412 ;; 3413 *) 3414 gcc_GAS_CHECK_FEATURE([section 'o' flag], gcc_cv_as_section_link_order, 3415 [2,35,0], [--fatal-warnings], 3416 [.section .foo,"a" 3417.byte 0 3418.section __patchable_function_entries,"awo",%progbits,.foo 3419.byte 0]) 3420 ;; 3421esac 3422AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_LINK_ORDER, 3423 [`if test $gcc_cv_as_section_link_order = yes; then echo 1; else echo 0; fi`], 3424 [Define 0/1 if your assembler supports 'o' flag in .section directive.]) 3425 3426gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge, 3427 [elf,2,12,0], [--fatal-warnings], 3428 [.section .rodata.str, "aMS", @progbits, 1]) 3429if test $gcc_cv_as_shf_merge = no; then 3430 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge, 3431 [elf,2,12,0], [--fatal-warnings], 3432 [.section .rodata.str, "aMS", %progbits, 1]) 3433fi 3434AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE, 3435 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`], 3436[Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.]) 3437 3438gcc_cv_ld_aligned_shf_merge=yes 3439case "$target" in 3440 # SHF_MERGE support is broken in Solaris ld up to Solaris 11.3/SPARC for 3441 # alignment > 1. 3442 sparc*-*-solaris2.11*) 3443 if test x"$gnu_ld" = xno \ 3444 && test "$ld_vers_major" -lt 2 && test "$ld_vers_minor" -lt 3159; then 3445 gcc_cv_ld_aligned_shf_merge=no 3446 fi 3447 ;; 3448esac 3449AC_DEFINE_UNQUOTED(HAVE_LD_ALIGNED_SHF_MERGE, 3450 [`if test $gcc_cv_ld_aligned_shf_merge = yes; then echo 1; else echo 0; fi`], 3451[Define 0/1 if your linker supports the SHF_MERGE flag with section alignment > 1.]) 3452 3453gcc_GAS_CHECK_FEATURE([stabs directive], gcc_cv_as_stabs_directive, ,, 3454[.stabs "gcc2_compiled.",60,0,0,0],, 3455[AC_DEFINE(HAVE_AS_STABS_DIRECTIVE, 1, 3456 [Define if your assembler supports .stabs.])]) 3457 3458gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)], 3459 gcc_cv_as_comdat_group, 3460 [elf,2,16,0], [--fatal-warnings], 3461 [.section .text,"axG",@progbits,.foo,comdat]) 3462if test $gcc_cv_as_comdat_group = yes; then 3463 gcc_cv_as_comdat_group_percent=no 3464 gcc_cv_as_comdat_group_group=no 3465else 3466 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)], 3467 gcc_cv_as_comdat_group_percent, 3468 [elf,2,16,0], [--fatal-warnings], 3469 [.section .text,"axG",%progbits,.foo,comdat]) 3470 if test $gcc_cv_as_comdat_group_percent = yes; then 3471 gcc_cv_as_comdat_group_group=no 3472 else 3473 case "${target}" in 3474 # Sun as uses a completely different syntax. 3475 *-*-solaris2*) 3476 case "${target}" in 3477 sparc*-*-solaris2*) 3478 conftest_s=' 3479 .group foo,".text%foo",#comdat 3480 .section ".text%foo", #alloc,#execinstr,#progbits 3481 .globl foo 3482 foo: 3483 ' 3484 ;; 3485 i?86-*-solaris2* | x86_64-*-solaris2*) 3486 conftest_s=' 3487 .group foo,.text%foo,#comdat 3488 .section .text%foo, "ax", @progbits 3489 .globl foo 3490 foo: 3491 ' 3492 ;; 3493 esac 3494 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)], 3495 gcc_cv_as_comdat_group_group, 3496 ,, [$conftest_s]) 3497 ;; 3498 esac 3499 if test -z "${gcc_cv_as_comdat_group_group+set}"; then 3500 gcc_cv_as_comdat_group_group=no 3501 fi 3502 fi 3503fi 3504if test x"$ld_is_gold" = xyes; then 3505 comdat_group=yes 3506elif test $in_tree_ld = yes ; then 3507 comdat_group=no 3508 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \ 3509 && test $in_tree_ld_is_elf = yes; then 3510 comdat_group=yes 3511 fi 3512elif echo "$ld_ver" | grep GNU > /dev/null; then 3513 comdat_group=yes 3514 if test 0"$ld_date" -lt 20050308; then 3515 if test -n "$ld_date"; then 3516 # If there was date string, but was earlier than 2005-03-08, fail 3517 comdat_group=no 3518 elif test "$ld_vers_major" -lt 2; then 3519 comdat_group=no 3520 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then 3521 comdat_group=no 3522 fi 3523 fi 3524else 3525changequote(,)dnl 3526 case "${target}" in 3527 *-*-solaris2.1[1-9]*) 3528 comdat_group=no 3529 # Sun ld has COMDAT group support since Solaris 9, but it doesn't 3530 # interoperate with GNU as until Solaris 11 build 130, i.e. ld 3531 # version 1.688. 3532 # 3533 # If using Sun as for COMDAT group as emitted by GCC, one needs at 3534 # least ld version 1.2267. 3535 if test "$ld_vers_major" -gt 1; then 3536 comdat_group=yes 3537 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then 3538 comdat_group=yes 3539 elif test "$ld_vers_minor" -ge 2267; then 3540 comdat_group=yes 3541 fi 3542 ;; 3543 *) 3544 # Assume linkers other than GNU ld don't support COMDAT group. 3545 comdat_group=no 3546 ;; 3547 esac 3548changequote([,])dnl 3549fi 3550# Allow overriding the automatic COMDAT group tests above. 3551AC_ARG_ENABLE(comdat, 3552 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])], 3553 [comdat_group="$enable_comdat"]) 3554if test $comdat_group = no; then 3555 gcc_cv_as_comdat_group=no 3556 gcc_cv_as_comdat_group_percent=no 3557 gcc_cv_as_comdat_group_group=no 3558fi 3559AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP, 3560 [`if test $gcc_cv_as_comdat_group = yes \ 3561 || test $gcc_cv_as_comdat_group_percent = yes \ 3562 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`], 3563[Define 0/1 if your assembler and linker support COMDAT groups.]) 3564 3565# Restrict this test to Solaris/x86: other targets define this statically. 3566case "${target}" in 3567 i?86-*-solaris2* | x86_64-*-solaris2*) 3568 AC_MSG_CHECKING(support for hidden thunks in linkonce sections) 3569 if test $in_tree_ld = yes || echo "$ld_ver" | grep GNU > /dev/null; then 3570 hidden_linkonce=yes 3571 else 3572 case "${target}" in 3573 # Full support for hidden thunks in linkonce sections only appeared in 3574 # Solaris 11/OpenSolaris. 3575 *-*-solaris2.1[[1-9]]*) 3576 hidden_linkonce=yes 3577 ;; 3578 *) 3579 hidden_linkonce=no 3580 ;; 3581 esac 3582 fi 3583 AC_MSG_RESULT($hidden_linkonce) 3584 AC_DEFINE_UNQUOTED(USE_HIDDEN_LINKONCE, 3585 [`if test $hidden_linkonce = yes; then echo 1; else echo 0; fi`], 3586 [Define 0/1 if your linker supports hidden thunks in linkonce sections.]) 3587 ;; 3588esac 3589 3590gcc_GAS_CHECK_FEATURE([line table is_stmt support], 3591 gcc_cv_as_is_stmt, 3592 [2,16,92],, 3593[ .text 3594 .file 1 "conf.c" 3595 .loc 1 1 0 is_stmt 1],, 3596[AC_DEFINE(HAVE_GAS_LOC_STMT, 1, 3597 [Define if your assembler supports the .loc is_stmt sub-directive.])]) 3598 3599gcc_GAS_CHECK_FEATURE([line table discriminator support], 3600 gcc_cv_as_discriminator, 3601 [2,19,51],, 3602[ .text 3603 .file 1 "conf.c" 3604 .loc 1 1 0 discriminator 1],, 3605[AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1, 3606 [Define if your assembler supports the .loc discriminator sub-directive.])]) 3607 3608# Catch the newlib flag of the same name so we can gate GCC features on it. 3609AC_ARG_ENABLE(newlib-nano-formatted-io, 3610[AS_HELP_STRING([--enable-newlib-nano-formatted-io], [Use nano version 3611 formatted IO])], 3612[case "${enableval}" in 3613 yes|no) 3614 ;; 3615 *) 3616 AC_MSG_ERROR([unknown newlib-nano-formatted-io setting $enableval]) 3617 ;; 3618esac], []) 3619 3620# Thread-local storage - the check is heavily parameterized. 3621conftest_s= 3622tls_first_major= 3623tls_first_minor= 3624tls_as_opt= 3625case "$target" in 3626changequote(,)dnl 3627 alpha*-*-*) 3628 conftest_s=' 3629 .section ".tdata","awT",@progbits 3630foo: .long 25 3631 .text 3632 ldq $27,__tls_get_addr($29) !literal!1 3633 lda $16,foo($29) !tlsgd!1 3634 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1 3635 ldq $27,__tls_get_addr($29) !literal!2 3636 lda $16,foo($29) !tlsldm!2 3637 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2 3638 ldq $1,foo($29) !gotdtprel 3639 ldah $2,foo($29) !dtprelhi 3640 lda $3,foo($2) !dtprello 3641 lda $4,foo($29) !dtprel 3642 ldq $1,foo($29) !gottprel 3643 ldah $2,foo($29) !tprelhi 3644 lda $3,foo($2) !tprello 3645 lda $4,foo($29) !tprel' 3646 tls_first_major=2 3647 tls_first_minor=13 3648 tls_as_opt=--fatal-warnings 3649 ;; 3650 arc*-*-*) 3651 conftest_s=' 3652 add_s r0,r0, @foo@tpoff' 3653 tls_first_major=2 3654 tls_first_minor=23 3655 ;; 3656 cris-*-*|crisv32-*-*) 3657 conftest_s=' 3658 .section ".tdata","awT",@progbits 3659x: .long 25 3660 .text 3661 move.d x:IE,$r10 3662 nop' 3663 tls_first_major=2 3664 tls_first_minor=20 3665 tls_as_opt=--fatal-warnings 3666 ;; 3667 frv*-*-*) 3668 conftest_s=' 3669 .section ".tdata","awT",@progbits 3670x: .long 25 3671 .text 3672 call #gettlsoff(x)' 3673 tls_first_major=2 3674 tls_first_minor=14 3675 ;; 3676 hppa*-*-linux*) 3677 conftest_s=' 3678t1: .reg %r20 3679t2: .reg %r21 3680gp: .reg %r19 3681 .section ".tdata","awT",@progbits 3682foo: .long 25 3683 .text 3684 .align 4 3685 addil LT%foo-$tls_gdidx$,gp 3686 ldo RT%foo-$tls_gdidx$(%r1),%arg0 3687 b __tls_get_addr 3688 nop 3689 addil LT%foo-$tls_ldidx$,gp 3690 b __tls_get_addr 3691 ldo RT%foo-$tls_ldidx$(%r1),%arg0 3692 addil LR%foo-$tls_dtpoff$,%ret0 3693 ldo RR%foo-$tls_dtpoff$(%r1),%t1 3694 mfctl %cr27,%t1 3695 addil LT%foo-$tls_ieoff$,gp 3696 ldw RT%foo-$tls_ieoff$(%r1),%t2 3697 add %t1,%t2,%t3 3698 mfctl %cr27,%t1 3699 addil LR%foo-$tls_leoff$,%t1 3700 ldo RR%foo-$tls_leoff$(%r1),%t2' 3701 tls_first_major=2 3702 tls_first_minor=15 3703 tls_as_opt=--fatal-warnings 3704 ;; 3705 arm*-*-*) 3706 conftest_s=' 3707 .section ".tdata","awT",%progbits 3708foo: .long 25 3709 .text 3710.word foo(gottpoff) 3711.word foo(tpoff) 3712.word foo(tlsgd) 3713.word foo(tlsldm) 3714.word foo(tlsldo)' 3715 tls_first_major=2 3716 tls_first_minor=17 3717 ;; 3718 i[34567]86-*-* | x86_64-*-*) 3719 case "$target" in 3720 i[34567]86-*-solaris2.* | x86_64-*-solaris2.*) 3721 on_solaris=yes 3722 ;; 3723 *) 3724 on_solaris=no 3725 ;; 3726 esac 3727 if test x$on_solaris = xyes && test x$gas_flag = xno; then 3728 conftest_s=' 3729 .section .tdata,"awt",@progbits' 3730 tls_first_major=0 3731 tls_first_minor=0 3732 tls_section_flag=t 3733changequote([,])dnl 3734 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't', 3735[Define to the flag used to mark TLS sections if the default (`T') doesn't work.]) 3736changequote(,)dnl 3737 else 3738 conftest_s=' 3739 .section ".tdata","awT",@progbits' 3740 tls_first_major=2 3741 tls_first_minor=14 3742 tls_section_flag=T 3743 tls_as_opt="--fatal-warnings" 3744 fi 3745 case "$target" in 3746 i[34567]86-*-*) 3747 if test x$on_solaris = xyes; then 3748 case $gas_flag in 3749 yes) tls_as_opt="$tls_as_opt --32" ;; 3750 esac 3751 fi 3752 conftest_s="$conftest_s 3753foo: .long 25 3754 .text 3755 movl %gs:0, %eax 3756 leal foo@tlsgd(,%ebx,1), %eax 3757 leal foo@tlsldm(%ebx), %eax 3758 leal foo@dtpoff(%eax), %edx 3759 movl foo@gottpoff(%ebx), %eax 3760 subl foo@gottpoff(%ebx), %eax 3761 addl foo@gotntpoff(%ebx), %eax 3762 movl foo@indntpoff, %eax 3763 movl \$foo@tpoff, %eax 3764 subl \$foo@tpoff, %eax 3765 leal foo@ntpoff(%ecx), %eax" 3766 ;; 3767 x86_64-*-*) 3768 if test x$on_solaris = xyes; then 3769 case $gas_flag in 3770 yes) tls_as_opt="$tls_as_opt --64" ;; 3771 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;; 3772 esac 3773 fi 3774 conftest_s="$conftest_s 3775foo: .long 25 3776 .text 3777 movq %fs:0, %rax 3778 leaq foo@tlsgd(%rip), %rdi 3779 leaq foo@tlsld(%rip), %rdi 3780 leaq foo@dtpoff(%rax), %rdx 3781 movq foo@gottpoff(%rip), %rax 3782 movq \$foo@tpoff, %rax" 3783 ;; 3784 esac 3785 ;; 3786 ia64-*-*) 3787 conftest_s=' 3788 .section ".tdata","awT",@progbits 3789foo: data8 25 3790 .text 3791 addl r16 = @ltoff(@dtpmod(foo#)), gp 3792 addl r17 = @ltoff(@dtprel(foo#)), gp 3793 addl r18 = @ltoff(@tprel(foo#)), gp 3794 addl r19 = @dtprel(foo#), gp 3795 adds r21 = @dtprel(foo#), r13 3796 movl r23 = @dtprel(foo#) 3797 addl r20 = @tprel(foo#), gp 3798 adds r22 = @tprel(foo#), r13 3799 movl r24 = @tprel(foo#)' 3800 tls_first_major=2 3801 tls_first_minor=13 3802 tls_as_opt=--fatal-warnings 3803 ;; 3804 microblaze*-*-*) 3805 conftest_s=' 3806 .section .tdata,"awT",@progbits 3807x: 3808 .word 2 3809 .text 3810 addik r5,r20,x@TLSGD 3811 addik r5,r20,x@TLSLDM' 3812 tls_first_major=2 3813 tls_first_minor=20 3814 tls_as_opt='--fatal-warnings' 3815 ;; 3816 mips*-*-*) 3817 conftest_s=' 3818 .section .tdata,"awT",@progbits 3819x: 3820 .word 2 3821 .text 3822 addiu $4, $28, %tlsgd(x) 3823 addiu $4, $28, %tlsldm(x) 3824 lui $4, %dtprel_hi(x) 3825 addiu $4, $4, %dtprel_lo(x) 3826 lw $4, %gottprel(x)($28) 3827 lui $4, %tprel_hi(x) 3828 addiu $4, $4, %tprel_lo(x)' 3829 tls_first_major=2 3830 tls_first_minor=16 3831 tls_as_opt='-32 --fatal-warnings' 3832 ;; 3833 m68k-*-*) 3834 conftest_s=' 3835 .section .tdata,"awT",@progbits 3836x: 3837 .word 2 3838 .text 3839foo: 3840 move.l x@TLSGD(%a5),%a0 3841 move.l x@TLSLDM(%a5),%a0 3842 move.l x@TLSLDO(%a5),%a0 3843 move.l x@TLSIE(%a5),%a0 3844 move.l x@TLSLE(%a5),%a0' 3845 tls_first_major=2 3846 tls_first_minor=19 3847 tls_as_opt='--fatal-warnings' 3848 ;; 3849 nios2-*-*) 3850 conftest_s=' 3851 .section ".tdata","awT",@progbits' 3852 tls_first_major=2 3853 tls_first_minor=23 3854 tls_as_opt="--fatal-warnings" 3855 ;; 3856 aarch64*-*-*) 3857 conftest_s=' 3858 .section ".tdata","awT",%progbits 3859foo: .long 25 3860 .text 3861 adrp x0, :tlsgd:x 3862 add x0, x0, #:tlsgd_lo12:x 3863 bl __tls_get_addr 3864 nop' 3865 tls_first_major=2 3866 tls_first_minor=20 3867 tls_as_opt='--fatal-warnings' 3868 ;; 3869 or1k*-*-*) 3870 conftest_s=' 3871 .section ".tdata","awT",@progbits 3872foo: .long 25 3873 .text 3874 l.movhi r3, tpoffha(foo) 3875 l.add r3, r3, r10 3876 l.lwz r4, tpofflo(foo)(r3)' 3877 tls_first_major=2 3878 tls_first_minor=30 3879 tls_as_opt=--fatal-warnings 3880 ;; 3881 powerpc-ibm-aix*) 3882 conftest_s=' 3883 .extern __get_tpointer 3884 .toc 3885LC..1: 3886 .tc a[TC],a[TL]@le 3887 .csect .text[PR] 3888.tlstest: 3889 lwz 9,LC..1(2) 3890 bla __get_tpointer 3891 lwzx 3,9,3 3892 .globl a 3893 .csect a[TL],4 3894a: 3895 .space 4' 3896 tls_first_major=0 3897 tls_first_minor=0 3898 ;; 3899 powerpc64*-*-*) 3900 conftest_s=' 3901 .section ".tdata","awT",@progbits 3902 .align 3 3903ld0: .space 8 3904ld1: .space 8 3905x1: .space 8 3906x2: .space 8 3907x3: .space 8 3908 .text 3909 addi 3,2,ld0@got@tlsgd 3910 bl .__tls_get_addr 3911 nop 3912 addi 3,2,ld1@toc 3913 bl .__tls_get_addr 3914 nop 3915 addi 3,2,x1@got@tlsld 3916 bl .__tls_get_addr 3917 nop 3918 addi 9,3,x1@dtprel 3919 bl .__tls_get_addr 3920 nop 3921 addis 9,3,x2@dtprel@ha 3922 addi 9,9,x2@dtprel@l 3923 bl .__tls_get_addr 3924 nop 3925 ld 9,x3@got@dtprel(2) 3926 add 9,9,3 3927 bl .__tls_get_addr 3928 nop' 3929 tls_first_major=2 3930 tls_first_minor=14 3931 tls_as_opt="-a64 --fatal-warnings" 3932 ;; 3933 powerpc*-*-*) 3934 conftest_s=' 3935 .section ".tdata","awT",@progbits 3936 .align 2 3937ld0: .space 4 3938ld1: .space 4 3939x1: .space 4 3940x2: .space 4 3941x3: .space 4 3942 .text 3943 addi 3,31,ld0@got@tlsgd 3944 bl __tls_get_addr 3945 addi 3,31,x1@got@tlsld 3946 bl __tls_get_addr 3947 addi 9,3,x1@dtprel 3948 addis 9,3,x2@dtprel@ha 3949 addi 9,9,x2@dtprel@l 3950 lwz 9,x3@got@tprel(31) 3951 add 9,9,x@tls 3952 addi 9,2,x1@tprel 3953 addis 9,2,x2@tprel@ha 3954 addi 9,9,x2@tprel@l' 3955 tls_first_major=2 3956 tls_first_minor=14 3957 tls_as_opt="-a32 --fatal-warnings" 3958 ;; 3959 riscv*-*-*) 3960 conftest_s=' 3961 .section .tdata,"awT",@progbits 3962x: .word 2 3963 .text 3964 la.tls.gd a0,x 3965 call __tls_get_addr' 3966 tls_first_major=2 3967 tls_first_minor=21 3968 tls_as_opt='--fatal-warnings' 3969 ;; 3970 s390-*-*) 3971 conftest_s=' 3972 .section ".tdata","awT",@progbits 3973foo: .long 25 3974 .text 3975 .long foo@TLSGD 3976 .long foo@TLSLDM 3977 .long foo@DTPOFF 3978 .long foo@NTPOFF 3979 .long foo@GOTNTPOFF 3980 .long foo@INDNTPOFF 3981 l %r1,foo@GOTNTPOFF(%r12) 3982 l %r1,0(%r1):tls_load:foo 3983 bas %r14,0(%r1,%r13):tls_gdcall:foo 3984 bas %r14,0(%r1,%r13):tls_ldcall:foo' 3985 tls_first_major=2 3986 tls_first_minor=14 3987 tls_as_opt="-m31 --fatal-warnings" 3988 ;; 3989 s390x-*-*) 3990 conftest_s=' 3991 .section ".tdata","awT",@progbits 3992foo: .long 25 3993 .text 3994 .quad foo@TLSGD 3995 .quad foo@TLSLDM 3996 .quad foo@DTPOFF 3997 .quad foo@NTPOFF 3998 .quad foo@GOTNTPOFF 3999 lg %r1,foo@GOTNTPOFF(%r12) 4000 larl %r1,foo@INDNTPOFF 4001 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo 4002 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo' 4003 tls_first_major=2 4004 tls_first_minor=14 4005 tls_as_opt="-m64 -Aesame --fatal-warnings" 4006 ;; 4007 sh-*-* | sh[123456789lbe]*-*-*) 4008 conftest_s=' 4009 .section ".tdata","awT",@progbits 4010foo: .long 25 4011 .text 4012 .long foo@TLSGD 4013 .long foo@TLSLDM 4014 .long foo@DTPOFF 4015 .long foo@GOTTPOFF 4016 .long foo@TPOFF' 4017 tls_first_major=2 4018 tls_first_minor=13 4019 tls_as_opt=--fatal-warnings 4020 ;; 4021 sparc*-*-*) 4022 case "$target" in 4023 sparc*-sun-solaris2.*) 4024 on_solaris=yes 4025 ;; 4026 *) 4027 on_solaris=no 4028 ;; 4029 esac 4030 if test x$on_solaris = xyes && test x$gas_flag = xno; then 4031 conftest_s=' 4032 .section ".tdata",#alloc,#write,#tls' 4033 tls_first_major=0 4034 tls_first_minor=0 4035 else 4036 conftest_s=' 4037 .section ".tdata","awT",@progbits' 4038 tls_first_major=2 4039 tls_first_minor=14 4040 tls_as_opt="-32 --fatal-warnings" 4041 fi 4042 conftest_s="$conftest_s 4043foo: .long 25 4044 .text 4045 sethi %tgd_hi22(foo), %o0 4046 add %o0, %tgd_lo10(foo), %o1 4047 add %l7, %o1, %o0, %tgd_add(foo) 4048 call __tls_get_addr, %tgd_call(foo) 4049 sethi %tldm_hi22(foo), %l1 4050 add %l1, %tldm_lo10(foo), %l2 4051 add %l7, %l2, %o0, %tldm_add(foo) 4052 call __tls_get_addr, %tldm_call(foo) 4053 sethi %tldo_hix22(foo), %l3 4054 xor %l3, %tldo_lox10(foo), %l4 4055 add %o0, %l4, %l5, %tldo_add(foo) 4056 sethi %tie_hi22(foo), %o3 4057 add %o3, %tie_lo10(foo), %o3 4058 ld [%l7 + %o3], %o2, %tie_ld(foo) 4059 add %g7, %o2, %o4, %tie_add(foo) 4060 sethi %tle_hix22(foo), %l1 4061 xor %l1, %tle_lox10(foo), %o5 4062 ld [%g7 + %o5], %o1" 4063 ;; 4064 tilepro*-*-*) 4065 conftest_s=' 4066 .section ".tdata","awT",@progbits 4067foo: .long 25 4068 .text 4069 addli r0, zero, tls_gd(foo) 4070 auli r0, zero, tls_gd_ha16(foo) 4071 addli r0, r0, tls_gd_lo16(foo) 4072 jal __tls_get_addr 4073 addli r0, zero, tls_ie(foo) 4074 auli r0, r0, tls_ie_ha16(foo) 4075 addli r0, r0, tls_ie_lo16(foo)' 4076 tls_first_major=2 4077 tls_first_minor=22 4078 tls_as_opt="--fatal-warnings" 4079 ;; 4080 tilegx*-*-*) 4081 conftest_s=' 4082 .section ".tdata","awT",@progbits 4083foo: .long 25 4084 .text 4085 shl16insli r0, zero, hw0_last_tls_gd(foo) 4086 shl16insli r0, zero, hw1_last_tls_gd(foo) 4087 shl16insli r0, r0, hw0_tls_gd(foo) 4088 jal __tls_get_addr 4089 shl16insli r0, zero, hw1_last_tls_ie(foo) 4090 shl16insli r0, r0, hw0_tls_ie(foo)' 4091 tls_first_major=2 4092 tls_first_minor=22 4093 tls_as_opt="--fatal-warnings" 4094 ;; 4095 xtensa*-*-*) 4096 conftest_s=' 4097 .section ".tdata","awT",@progbits 4098foo: .long 25 4099 .text 4100 movi a8, foo@TLSFUNC 4101 movi a10, foo@TLSARG 4102 callx8.tls a8, foo@TLSCALL' 4103 tls_first_major=2 4104 tls_first_minor=19 4105 ;; 4106changequote([,])dnl 4107esac 4108set_have_as_tls=no 4109if test "x$enable_tls" = xno ; then 4110 : # TLS explicitly disabled. 4111elif test "x$enable_tls" = xyes ; then 4112 set_have_as_tls=yes # TLS explicitly enabled. 4113elif test -z "$tls_first_major"; then 4114 : # If we don't have a check, assume no support. 4115else 4116 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls, 4117 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],, 4118 [set_have_as_tls=yes]) 4119fi 4120if test $set_have_as_tls = yes ; then 4121 AC_DEFINE(HAVE_AS_TLS, 1, 4122 [Define if your assembler and linker support thread-local storage.]) 4123fi 4124 4125# Target-specific assembler checks. 4126 4127AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option) 4128gcc_cv_ld_static_dynamic=no 4129gcc_cv_ld_static_option='-Bstatic' 4130gcc_cv_ld_dynamic_option='-Bdynamic' 4131if test $in_tree_ld = yes ; then 4132 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then 4133 gcc_cv_ld_static_dynamic=yes 4134 fi 4135elif test x$gcc_cv_ld != x; then 4136 # Check if linker supports -Bstatic/-Bdynamic option 4137 if $gcc_cv_ld --help 2>&1 | grep -- -Bstatic > /dev/null \ 4138 && $gcc_cv_ld --help 2>&1 | grep -- -Bdynamic > /dev/null; then 4139 gcc_cv_ld_static_dynamic=yes 4140 else 4141 case "$target" in 4142 # AIX ld uses -b flags 4143 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*) 4144 gcc_cv_ld_static_dynamic=yes 4145 gcc_cv_ld_static_option="-bstatic" 4146 gcc_cv_ld_dynamic_option="-bdynamic" 4147 ;; 4148 # HP-UX ld uses -a flags to select between shared and archive. 4149 *-*-hpux*) 4150 if test x"$gnu_ld" = xno; then 4151 gcc_cv_ld_static_dynamic=yes 4152 gcc_cv_ld_static_option="-aarchive_shared" 4153 gcc_cv_ld_dynamic_option="-adefault" 4154 fi 4155 ;; 4156 # Solaris 2 ld always supports -Bstatic/-Bdynamic. 4157 *-*-solaris2*) 4158 gcc_cv_ld_static_dynamic=yes 4159 ;; 4160 esac 4161 fi 4162fi 4163if test x"$gcc_cv_ld_static_dynamic" = xyes; then 4164 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1, 4165[Define if your linker supports -Bstatic/-Bdynamic or equivalent options.]) 4166 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option", 4167[Define to the linker option to disable use of shared objects.]) 4168 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option", 4169[Define to the linker option to enable use of shared objects.]) 4170fi 4171AC_MSG_RESULT($gcc_cv_ld_static_dynamic) 4172 4173AC_MSG_CHECKING(linker --version-script option) 4174gcc_cv_ld_version_script=no 4175ld_version_script_option='' 4176if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then 4177 gcc_cv_ld_version_script=yes 4178 ld_version_script_option='--version-script' 4179elif test x$gcc_cv_ld != x; then 4180 case "$target" in 4181 # Solaris 2 ld always supports -M. It also supports a subset of 4182 # --version-script since Solaris 11.4, but requires 4183 # -z gnu-version-script-compat to activate. 4184 *-*-solaris2*) 4185 gcc_cv_ld_version_script=yes 4186 ld_version_script_option='-M' 4187 ;; 4188 esac 4189fi 4190# Don't AC_DEFINE result, only used in jit/Make-lang.in so far. 4191AC_MSG_RESULT($gcc_cv_ld_version_script) 4192AC_SUBST(ld_version_script_option) 4193 4194AC_MSG_CHECKING(linker soname option) 4195gcc_cv_ld_soname=no 4196if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then 4197 gcc_cv_ld_soname=yes 4198 ld_soname_option='-soname' 4199elif test x$gcc_cv_ld != x; then 4200 case "$target" in 4201 *-*-darwin*) 4202 gcc_cv_ld_soname=yes 4203 ld_soname_option='-install_name' 4204 ;; 4205 # Solaris 2 ld always supports -h. It also supports --soname for GNU 4206 # ld compatiblity since some Solaris 10 update. 4207 *-*-solaris2*) 4208 gcc_cv_ld_soname=yes 4209 ld_soname_option='-h' 4210 ;; 4211 esac 4212fi 4213# Don't AC_DEFINE result, only used in jit/Make-lang.in so far. 4214AC_MSG_RESULT($gcc_cv_ld_soname) 4215AC_SUBST(ld_soname_option) 4216 4217if test x"$demangler_in_ld" = xyes; then 4218 AC_MSG_CHECKING(linker --demangle support) 4219 gcc_cv_ld_demangle=no 4220 if test $in_tree_ld = yes; then 4221 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \ 4222 gcc_cv_ld_demangle=yes 4223 fi 4224 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then 4225 # Check if the GNU linker supports --demangle option 4226 if $gcc_cv_ld --help 2>&1 | grep no-demangle > /dev/null; then 4227 gcc_cv_ld_demangle=yes 4228 fi 4229 fi 4230 if test x"$gcc_cv_ld_demangle" = xyes; then 4231 AC_DEFINE(HAVE_LD_DEMANGLE, 1, 4232[Define if your linker supports --demangle option.]) 4233 fi 4234 AC_MSG_RESULT($gcc_cv_ld_demangle) 4235fi 4236 4237AC_MSG_CHECKING(linker plugin support) 4238gcc_cv_lto_plugin=0 4239if test -f liblto_plugin.la; then 4240 save_ld_ver="$ld_ver" 4241 save_ld_vers_major="$ld_vers_major" 4242 save_ld_vers_minor="$ld_vers_minor" 4243 save_ld_is_gold="$ld_is_gold" 4244 4245 ld_is_gold=no 4246 4247 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then 4248 ld_ver="GNU ld" 4249 # FIXME: ld_is_gold? 4250 ld_vers_major="$gcc_cv_gld_major_version" 4251 ld_vers_minor="$gcc_cv_gld_minor_version" 4252 else 4253 # Determine plugin linker version. 4254 # FIXME: Partial duplicate from above, generalize. 4255changequote(,)dnl 4256 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q` 4257 if echo "$ld_ver" | grep GNU > /dev/null; then 4258 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then 4259 ld_is_gold=yes 4260 ld_vers=`echo $ld_ver | sed -n \ 4261 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'` 4262 else 4263 ld_vers=`echo $ld_ver | sed -n \ 4264 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'` 4265 fi 4266 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'` 4267 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'` 4268 fi 4269changequote([,])dnl 4270 fi 4271 4272 # Determine plugin support. 4273 if echo "$ld_ver" | grep GNU > /dev/null; then 4274 # Require GNU ld or gold 2.21+ for plugin support by default. 4275 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then 4276 gcc_cv_lto_plugin=2 4277 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20. 4278 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then 4279 gcc_cv_lto_plugin=1 4280 fi 4281 fi 4282 4283 ld_ver="$save_ld_ver" 4284 ld_vers_major="$save_ld_vers_major" 4285 ld_vers_minor="$save_ld_vers_minor" 4286 ld_is_gold="$save_ld_is_gold" 4287fi 4288AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin, 4289 [Define to the level of your linker's plugin support.]) 4290AC_MSG_RESULT($gcc_cv_lto_plugin) 4291 4292# Target OS-specific assembler checks. 4293 4294case "$target_os" in 4295 darwin*) 4296 gcc_GAS_CHECK_FEATURE([-mmacosx-version-min option], 4297 gcc_cv_as_mmacosx_version_min,, 4298 [-mmacosx-version-min=10.1], [.text],, 4299 [AC_DEFINE(HAVE_AS_MMACOSX_VERSION_MIN_OPTION, 1, 4300 [Define if your Mac OS X assembler supports the -mmacos-version-min option.])]) 4301 ;; 4302esac 4303 4304# Target CPU-specific assembler checks. 4305 4306case "$target" in 4307 aarch64*-*-*) 4308 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,, 4309 [-mabi=lp64], [.text],,,) 4310 if test x$gcc_cv_as_aarch64_mabi = xyes; then 4311 AC_DEFINE(HAVE_AS_MABI_OPTION, 1, 4312 [Define if your assembler supports the -mabi option.]) 4313 else 4314 if test x$with_abi = xilp32; then 4315 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\ 4316 Upgrade the Assembler.]) 4317 fi 4318 if test x"$with_multilib_list" = xdefault; then 4319 TM_MULTILIB_CONFIG=lp64 4320 else 4321 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'` 4322 for aarch64_multilib in ${aarch64_multilibs}; do 4323 case ${aarch64_multilib} in 4324 ilp32) 4325 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\ 4326 Upgrade the Assembler.]) 4327 ;; 4328 *) 4329 ;; 4330 esac 4331 done 4332 fi 4333 fi 4334 # Check if we have binutils support for relocations types needed by -fpic 4335 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,, 4336 [ 4337 .text 4338 ldr x0, [[x2, #:gotpage_lo15:globalsym]] 4339 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1, 4340 [Define if your assembler supports relocs needed by -fpic.])]) 4341 # Enable Branch Target Identification Mechanism and Return Address 4342 # Signing by default. 4343 AC_ARG_ENABLE(standard-branch-protection, 4344 [ 4345AS_HELP_STRING([--enable-standard-branch-protection], 4346 [enable Branch Target Identification Mechanism and Return Address Signing by default for AArch64]) 4347AS_HELP_STRING([--disable-standard-branch-protection], 4348 [disable Branch Target Identification Mechanism and Return Address Signing by default for AArch64]) 4349 ], 4350 [ 4351 case $enableval in 4352 yes) 4353 tm_defines="${tm_defines} TARGET_ENABLE_BTI=1 TARGET_ENABLE_PAC_RET=1" 4354 ;; 4355 no) 4356 ;; 4357 *) 4358 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-standard-branch-protection.\ 4359 Valid choices are 'yes' and 'no'.]) 4360 ;; 4361 esac 4362 ], 4363 []) 4364 # Enable default workaround for AArch64 Cortex-A53 erratum 835769. 4365 AC_ARG_ENABLE(fix-cortex-a53-835769, 4366 [ 4367AS_HELP_STRING([--enable-fix-cortex-a53-835769], 4368 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default]) 4369AS_HELP_STRING([--disable-fix-cortex-a53-835769], 4370 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default]) 4371 ], 4372 [ 4373 case $enableval in 4374 yes) 4375 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1" 4376 ;; 4377 no) 4378 ;; 4379 *) 4380 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\ 4381 Valid choices are 'yes' and 'no'.]) 4382 ;; 4383 4384 esac 4385 ], 4386 []) 4387 # Enable default workaround for AArch64 Cortex-A53 erratum 843419. 4388 AC_ARG_ENABLE(fix-cortex-a53-843419, 4389 [ 4390AS_HELP_STRING([--enable-fix-cortex-a53-843419], 4391 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default]) 4392AS_HELP_STRING([--disable-fix-cortex-a53-843419], 4393 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default]) 4394 ], 4395 [ 4396 case $enableval in 4397 yes) 4398 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1" 4399 ;; 4400 no) 4401 ;; 4402 *) 4403 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\ 4404 Valid choices are 'yes' and 'no'.]) 4405 ;; 4406 4407 esac 4408 ], 4409 []) 4410 ;; 4411 4412 # All TARGET_ABI_OSF targets. 4413 alpha*-*-linux* | alpha*-*-*bsd*) 4414 gcc_GAS_CHECK_FEATURE([explicit relocation support], 4415 gcc_cv_as_alpha_explicit_relocs, [2,12,0],, 4416[ .set nomacro 4417 .text 4418 extbl $3, $2, $3 !lituse_bytoff!1 4419 ldq $2, a($29) !literal!1 4420 ldq $4, b($29) !literal!2 4421 ldq_u $3, 0($2) !lituse_base!1 4422 ldq $27, f($29) !literal!5 4423 jsr $26, ($27), f !lituse_jsr!5 4424 ldah $29, 0($26) !gpdisp!3 4425 lda $0, c($29) !gprel 4426 ldah $1, d($29) !gprelhigh 4427 lda $1, d($1) !gprellow 4428 lda $29, 0($29) !gpdisp!3],, 4429 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1, 4430 [Define if your assembler supports explicit relocations.])]) 4431 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support], 4432 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],, 4433[ .set nomacro 4434 .text 4435 ldq $27, a($29) !literal!1 4436 jsr $26, ($27), a !lituse_jsrdirect!1],, 4437 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1, 4438 [Define if your assembler supports the lituse_jsrdirect relocation.])]) 4439 ;; 4440 4441 avr-*-*) 4442 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,, 4443 [--mlink-relax], [.text],, 4444 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1, 4445 [Define if your avr assembler supports --mlink-relax option.])]) 4446 4447 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,, 4448 [-mrmw], [.text],, 4449 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1, 4450 [Define if your avr assembler supports -mrmw option.])]) 4451 4452 gcc_GAS_CHECK_FEATURE([__gcc_isr pseudo instruction], 4453 gcc_cv_as_avr_mgccisr,, 4454 [-mgcc-isr], [.text 4455 __gcc_isr 1 4456 __gcc_isr 2 4457 __gcc_isr 0,r24 4458 ],, 4459 [AC_DEFINE(HAVE_AS_AVR_MGCCISR_OPTION, 1, 4460 [Define if your avr assembler supports -mgcc-isr option.])]) 4461 4462 # Check how default linker description file implements .rodata for 4463 # avrxmega3 (PR21472). avr-gcc assumes .rodata is *not* loaded to 4464 # RAM so avr-gcc skips __do_copy_data for .rodata objects. 4465 AC_MSG_CHECKING(binutils for avrxmega3 .rodata support) 4466 cat > conftest.s <<EOF 4467 .section .rodata,"a",@progbits 4468 .global xxvaryy 4469 ;; avr-nm should print "... R xxvaryy", not "... D xxvaryy". 4470 xxvaryy: 4471 .word 1 4472EOF 4473 rm -f conftest.nm 4474 AC_TRY_COMMAND([$gcc_cv_as -mmcu=avrxmega3 conftest.s -o conftest.o]) 4475 AC_TRY_COMMAND([$gcc_cv_ld -mavrxmega3 conftest.o -o conftest.elf]) 4476 AC_TRY_COMMAND([$gcc_cv_nm conftest.elf > conftest.nm]) 4477 if test -s conftest.nm 4478 then 4479 if grep ' R xxvaryy' conftest.nm > /dev/null; then 4480 AC_MSG_RESULT(yes) 4481 AC_DEFINE(HAVE_LD_AVR_AVRXMEGA3_RODATA_IN_FLASH, 1, 4482 [Define if your default avr linker script for avrxmega3 leaves .rodata in flash.]) 4483 else 4484 AC_MSG_RESULT(no: avrxmega3 .rodata located in RAM) 4485 echo "$as_me: nm output was" >&AS_MESSAGE_LOG_FD 4486 cat conftest.nm >&AS_MESSAGE_LOG_FD 4487 avr_ld_ver="`$gcc_cv_ld -v | sed -e 's:^.* ::'`" 4488 AC_MSG_WARN([[support for avrxmega3 .rodata in flash needs Binutils 2.29 or higher (have $avr_ld_ver)]]) 4489 fi 4490 else 4491 AC_MSG_RESULT(test failed) 4492 echo "$as_me: failed program was" >&AS_MESSAGE_LOG_FD 4493 cat conftest.s >&AS_MESSAGE_LOG_FD 4494 AC_MSG_WARN([[see `config.log' for details]]) 4495 fi 4496 rm -f conftest.s conftest.o conftest.elf conftest.nm 4497 ;; 4498 4499 cris-*-*) 4500 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option], 4501 gcc_cv_as_cris_no_mul_bug,[2,15,91], 4502 [-no-mul-bug-abort], [.text],, 4503 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1, 4504 [Define if your assembler supports the -no-mul-bug-abort option.])]) 4505 ;; 4506 4507 sparc*-*-*) 4508 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,, 4509 [-relax], [.text],, 4510 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1, 4511 [Define if your assembler supports -relax option.])]) 4512 4513 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs], 4514 gcc_cv_as_sparc_gotdata_op,, 4515 [-K PIC], 4516[.text 4517.align 4 4518foo: 4519 nop 4520bar: 4521 sethi %gdop_hix22(foo), %g1 4522 xor %g1, %gdop_lox10(foo), %g1 4523 ld [[%l7 + %g1]], %g2, %gdop(foo)], 4524 [if test x$gcc_cv_ld != x \ 4525 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then 4526 if test x$gcc_cv_objdump != x; then 4527 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \ 4528 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then 4529 gcc_cv_as_sparc_gotdata_op=no 4530 else 4531 gcc_cv_as_sparc_gotdata_op=yes 4532 fi 4533 fi 4534 fi 4535 rm -f conftest], 4536 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1, 4537 [Define if your assembler and linker support GOTDATA_OP relocs.])]) 4538 4539 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs], 4540 gcc_cv_as_sparc_ua_pcrel,, 4541 [-K PIC], 4542[.text 4543foo: 4544 nop 4545.data 4546.align 4 4547.byte 0 4548.uaword %r_disp32(foo)], 4549 [if test x$gcc_cv_ld != x \ 4550 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then 4551 gcc_cv_as_sparc_ua_pcrel=yes 4552 fi 4553 rm -f conftest], 4554 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1, 4555 [Define if your assembler and linker support unaligned PC relative relocs.]) 4556 4557 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols], 4558 gcc_cv_as_sparc_ua_pcrel_hidden,, 4559 [-K PIC], 4560[.data 4561.align 4 4562.byte 0x31 4563.uaword %r_disp32(foo) 4564.byte 0x32, 0x33, 0x34 4565.global foo 4566.hidden foo 4567foo: 4568.skip 4], 4569 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \ 4570 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \ 4571 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \ 4572 | grep ' 31000000 07323334' > /dev/null 2>&1; then 4573 if $gcc_cv_objdump -R conftest 2> /dev/null \ 4574 | grep 'DISP32' > /dev/null 2>&1; then 4575 : 4576 else 4577 gcc_cv_as_sparc_ua_pcrel_hidden=yes 4578 fi 4579 fi 4580 rm -f conftest], 4581 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1, 4582 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])]) 4583 ]) # unaligned pcrel relocs 4584 4585 gcc_GAS_CHECK_FEATURE([offsetable %lo()], 4586 gcc_cv_as_sparc_offsetable_lo10,, 4587 [-xarch=v9], 4588[.text 4589 or %g1, %lo(ab) + 12, %g1 4590 or %g1, %lo(ab + 12), %g1], 4591 [if test x$gcc_cv_objdump != x \ 4592 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \ 4593 | grep ' 82106000 82106000' > /dev/null 2>&1; then 4594 gcc_cv_as_sparc_offsetable_lo10=yes 4595 fi], 4596 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1, 4597 [Define if your assembler supports offsetable %lo().])]) 4598 4599 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions], 4600 gcc_cv_as_sparc_fmaf,, 4601 [-xarch=v9d], 4602 [.text 4603 .register %g2, #scratch 4604 .register %g3, #scratch 4605 .align 4 4606 fmaddd %f0, %f2, %f4, %f6 4607 addxccc %g1, %g2, %g3 4608 fsrl32 %f2, %f4, %f8 4609 fnaddd %f10, %f12, %f14],, 4610 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1, 4611 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])]) 4612 4613 gcc_GAS_CHECK_FEATURE([SPARC4 instructions], 4614 gcc_cv_as_sparc_sparc4,, 4615 [-xarch=sparc4], 4616 [.text 4617 .register %g2, #scratch 4618 .register %g3, #scratch 4619 .align 4 4620 cxbe %g2, %g3, 1f 46211: cwbneg %g2, %g3, 1f 46221: sha1 4623 md5 4624 aes_kexpand0 %f4, %f6, %f8 4625 des_round %f38, %f40, %f42, %f44 4626 camellia_f %f54, %f56, %f58, %f60 4627 kasumi_fi_xor %f46, %f48, %f50, %f52],, 4628 [AC_DEFINE(HAVE_AS_SPARC4, 1, 4629 [Define if your assembler supports SPARC4 instructions.])]) 4630 4631 gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions], 4632 gcc_cv_as_sparc_sparc5,, 4633 [-xarch=sparc5], 4634 [.text 4635 .register %g2, #scratch 4636 .register %g3, #scratch 4637 .align 4 4638 subxc %g1, %g2, %g3 4639 fpadd8 %f0, %f2, %f4],, 4640 [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1, 4641 [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])]) 4642 4643 gcc_GAS_CHECK_FEATURE([SPARC6 instructions], 4644 gcc_cv_as_sparc_sparc6,, 4645 [-xarch=sparc6], 4646 [.text 4647 .register %g2, #scratch 4648 .register %g3, #scratch 4649 .align 4 4650 rd %entropy, %g1 4651 fpsll64x %f0, %f2, %f4],, 4652 [AC_DEFINE(HAVE_AS_SPARC6, 1, 4653 [Define if your assembler supports SPARC6 instructions.])]) 4654 4655 gcc_GAS_CHECK_FEATURE([LEON instructions], 4656 gcc_cv_as_sparc_leon,, 4657 [-Aleon], 4658 [.text 4659 .register %g2, #scratch 4660 .register %g3, #scratch 4661 .align 4 4662 smac %g2, %g3, %g1 4663 umac %g2, %g3, %g1 4664 casa [[%g2]] 0xb, %g3, %g1],, 4665 [AC_DEFINE(HAVE_AS_LEON, 1, 4666 [Define if your assembler supports LEON instructions.])]) 4667 ;; 4668 4669changequote(,)dnl 4670 i[34567]86-*-* | x86_64-*-*) 4671changequote([,])dnl 4672 case $target_os in 4673 cygwin*) 4674 # Full C++ conformance when using a shared libstdc++-v3 requires some 4675 # support from the Cygwin DLL, which in more recent versions exports 4676 # wrappers to aid in interposing and redirecting operators new, delete, 4677 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we 4678 # are configuring for a version of Cygwin that exports the wrappers. 4679 if test x$host = x$target && test x$host_cpu = xi686; then 4680 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no]) 4681 else 4682 # Can't check presence of libc functions during cross-compile, so 4683 # we just have to assume we're building for an up-to-date target. 4684 gcc_ac_cygwin_dll_wrappers=yes 4685 fi 4686 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS, 4687 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`], 4688 [Define if you want to generate code by default that assumes that the 4689 Cygwin DLL exports wrappers to support libstdc++ function replacement.]) 4690 esac 4691 case $target_os in 4692 cygwin* | pe | mingw32*) 4693 # Recent binutils allows the three-operand form of ".comm" on PE. This 4694 # definition is used unconditionally to initialise the default state of 4695 # the target option variable that governs usage of the feature. 4696 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align, 4697 [2,19,52],,[.comm foo,1,32]) 4698 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM, 4699 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`], 4700 [Define if your assembler supports specifying the alignment 4701 of objects allocated using the GAS .comm command.]) 4702 # Used for DWARF 2 in PE 4703 gcc_GAS_CHECK_FEATURE([.secrel32 relocs], 4704 gcc_cv_as_ix86_pe_secrel32, 4705 [2,15,91],, 4706[.text 4707foo: nop 4708.data 4709 .secrel32 foo], 4710 [if test x$gcc_cv_ld != x \ 4711 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then 4712 gcc_cv_as_ix86_pe_secrel32=yes 4713 fi 4714 rm -f conftest], 4715 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1, 4716 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])]) 4717 # Test if the assembler supports the extended form of the .section 4718 # directive that specifies section alignment. LTO support uses this, 4719 # but normally only after installation, so we warn but don't fail the 4720 # configure if LTO is enabled but the assembler does not support it. 4721 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align, 4722 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"]) 4723 if test x$gcc_cv_as_section_has_align != xyes; then 4724 case ",$enable_languages," in 4725 *,lto,*) 4726 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.]) 4727 ;; 4728 esac 4729 fi 4730 ;; 4731 esac 4732 4733 gcc_GAS_CHECK_FEATURE([-xbrace_comment], gcc_cv_as_ix86_xbrace_comment,, 4734 [-xbrace_comment=no], [.text],, 4735 [AC_DEFINE(HAVE_AS_XBRACE_COMMENT_OPTION, 1, 4736 [Define if your assembler supports -xbrace_comment option.])]) 4737 4738 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics], 4739 gcc_cv_as_ix86_filds,,, 4740 [filds (%ebp); fists (%ebp)],, 4741 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1, 4742 [Define if your assembler uses filds and fists mnemonics.])]) 4743 4744 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics], 4745 gcc_cv_as_ix86_fildq,,, 4746 [fildq (%ebp); fistpq (%ebp)],, 4747 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1, 4748 [Define if your assembler uses fildq and fistq mnemonics.])]) 4749 4750 gcc_GAS_CHECK_FEATURE([cmov syntax], 4751 gcc_cv_as_ix86_cmov_sun_syntax,,, 4752 [cmovl.l %edx, %eax],, 4753 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1, 4754 [Define if your assembler supports the Sun syntax for cmov.])]) 4755 4756 gcc_GAS_CHECK_FEATURE([ffreep mnemonic], 4757 gcc_cv_as_ix86_ffreep,,, 4758 [ffreep %st(1)],, 4759 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1, 4760 [Define if your assembler supports the ffreep mnemonic.])]) 4761 4762 gcc_GAS_CHECK_FEATURE([.quad directive], 4763 gcc_cv_as_ix86_quad,,, 4764 [.quad 0],, 4765 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1, 4766 [Define if your assembler supports the .quad directive.])]) 4767 4768 gcc_GAS_CHECK_FEATURE([sahf mnemonic], 4769 gcc_cv_as_ix86_sahf,,, 4770 [.code64 4771 sahf],, 4772 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1, 4773 [Define if your assembler supports the sahf mnemonic in 64bit mode.])]) 4774 4775 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic], 4776 gcc_cv_as_ix86_interunit_movq,,, 4777 [.code64 4778 movq %mm0, %rax 4779 movq %rax, %xmm0]) 4780 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ, 4781 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`], 4782 [Define if your assembler supports interunit movq mnemonic.]) 4783 4784 gcc_GAS_CHECK_FEATURE([hle prefixes], 4785 gcc_cv_as_ix86_hle,,, 4786 [lock xacquire cmpxchg %esi, (%ecx)],, 4787 [AC_DEFINE(HAVE_AS_IX86_HLE, 1, 4788 [Define if your assembler supports HLE prefixes.])]) 4789 4790 gcc_GAS_CHECK_FEATURE([swap suffix], 4791 gcc_cv_as_ix86_swap,,, 4792 [movl.s %esp, %ebp],, 4793 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1, 4794 [Define if your assembler supports the swap suffix.])]) 4795 4796 gcc_GAS_CHECK_FEATURE([different section symbol subtraction], 4797 gcc_cv_as_ix86_diff_sect_delta,,, 4798 [.section .rodata 4799.L1: 4800 .long .L2-.L1 4801 .long .L3-.L1 4802 .text 4803.L3: nop 4804.L2: nop],, 4805 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1, 4806 [Define if your assembler supports the subtraction of symbols in different sections.])]) 4807 4808 gcc_GAS_CHECK_FEATURE([rep and lock prefix], 4809 gcc_cv_as_ix86_rep_lock_prefix,,, 4810 [rep movsl 4811 rep ret 4812 rep nop 4813 rep bsf %ecx, %eax 4814 rep bsr %ecx, %eax 4815 lock addl %edi, (%eax,%esi) 4816 lock orl $0, (%esp)],, 4817 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1, 4818 [Define if the assembler supports 'rep <insn>, lock <insn>'.])]) 4819 4820 gcc_GAS_CHECK_FEATURE([ud2 mnemonic], 4821 gcc_cv_as_ix86_ud2,,, 4822 [ud2],, 4823 [AC_DEFINE(HAVE_AS_IX86_UD2, 1, 4824 [Define if your assembler supports the 'ud2' mnemonic.])]) 4825 4826 # Enforce 32-bit output with gas and gld. 4827 if test x$gas = xyes; then 4828 as_ix86_gas_32_opt="--32" 4829 fi 4830 if echo "$ld_ver" | grep GNU > /dev/null; then 4831 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then 4832 ld_ix86_gld_32_opt="-melf_i386_sol2" 4833 else 4834 ld_ix86_gld_32_opt="-melf_i386" 4835 fi 4836 fi 4837 4838 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc], 4839 gcc_cv_as_ix86_tlsgdplt,, 4840 [$as_ix86_gas_32_opt], 4841 [call tls_gd@tlsgdplt], 4842 [if test x$gcc_cv_ld != x \ 4843 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then 4844 gcc_cv_as_ix86_tlsgdplt=yes 4845 fi 4846 rm -f conftest], 4847 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1, 4848 [Define if your assembler and linker support @tlsgdplt.])]) 4849 4850 conftest_s=' 4851 .section .tdata,"aw'$tls_section_flag'",@progbits 4852tls_ld: 4853 .section .text,"ax",@progbits 4854 call tls_ld@tlsldmplt' 4855 4856 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc], 4857 gcc_cv_as_ix86_tlsldmplt,, 4858 [$as_ix86_gas_32_opt], 4859 [$conftest_s], 4860 [if test x$gcc_cv_ld != x \ 4861 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then 4862 gcc_cv_as_ix86_tlsldmplt=yes 4863 fi 4864 rm -f conftest]) 4865 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT, 4866 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`], 4867 [Define to 1 if your assembler and linker support @tlsldmplt.]) 4868 4869 conftest_s=' 4870 .section .text,"ax",@progbits 4871 .globl _start 4872 .type _start, @function 4873_start: 4874 leal value@tlsldm(%ebx), %eax 4875 call ___tls_get_addr@plt 4876 4877 .section .tdata,"aw'$tls_section_flag'",@progbits 4878 .type value, @object 4879value:' 4880 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc], 4881 gcc_cv_as_ix86_tlsldm,, 4882 [$as_ix86_gas_32_opt], 4883 [$conftest_s], 4884 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \ 4885 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then 4886 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \ 4887 || dis conftest 2>/dev/null | grep nop > /dev/null; then 4888 gcc_cv_as_ix86_tlsldm=yes 4889 fi 4890 fi 4891 rm -f conftest]) 4892 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM, 4893 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`], 4894 [Define to 1 if your assembler and linker support @tlsldm.]) 4895 4896 conftest_s=' 4897 .data 4898bar: 4899 .byte 1 4900 .text 4901 .global _start 4902_start: 4903 cmpl $0, bar@GOT 4904 jmp *_start@GOT' 4905 gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc], 4906 gcc_cv_as_ix86_got32x,, 4907 [$as_ix86_gas_32_opt], 4908 [$conftest_s], 4909 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \ 4910 && test x$gcc_cv_readelf != x \ 4911 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \ 4912 | grep R_386_GOT32X > /dev/null 2>&1 \ 4913 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then 4914 if $gcc_cv_objdump -dw conftest 2>&1 \ 4915 | grep 0xffffff > /dev/null 2>&1; then 4916 gcc_cv_as_ix86_got32x=no 4917 else 4918 gcc_cv_as_ix86_got32x=yes 4919 fi 4920 fi 4921 rm -f conftest]) 4922 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X, 4923 [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`], 4924 [Define 0/1 if your assembler and linker support @GOT.]) 4925 4926 gcc_GAS_CHECK_FEATURE([GOTOFF in data], 4927 gcc_cv_as_ix86_gotoff_in_data, [2,11,0], 4928 [$as_ix86_gas_32_opt], 4929[ .text 4930.L0: 4931 nop 4932 .data 4933 .long .L0@GOTOFF]) 4934 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA, 4935 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`], 4936 [Define true if the assembler supports '.long foo@GOTOFF'.]) 4937 4938 conftest_s=' 4939 .section .text,"ax",@progbits 4940 .globl _start 4941 .type _start, @function 4942_start: 4943 leal ld@tlsldm(%ecx), %eax 4944 call *___tls_get_addr@GOT(%ecx) 4945 leal gd@tlsgd(%ecx), %eax 4946 call *___tls_get_addr@GOT(%ecx) 4947 4948 .section .tdata,"aw'$tls_section_flag'",@progbits 4949 .type ld, @object 4950ld: 4951 .byte 0 4952 .globl gd 4953 .type gd, @object 4954gd: 4955 .byte 0' 4956 gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT], 4957 gcc_cv_as_ix86_tls_get_addr_via_got,, 4958 [$as_ix86_gas_32_opt], 4959 [$conftest_s], 4960 [if test x$gcc_cv_ld != x \ 4961 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then 4962 gcc_cv_as_ix86_tls_get_addr_via_got=yes 4963 fi 4964 rm -f conftest]) 4965 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT, 4966 [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`], 4967 [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.]) 4968 ;; 4969 4970 ia64*-*-*) 4971 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs], 4972 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],, 4973[ .text 4974 addl r15 = @ltoffx(x#), gp 4975 ;; 4976 ld8.mov r16 = [[r15]], x# 4977],, 4978 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1, 4979 [Define if your assembler supports ltoffx and ldxmov relocations.])]) 4980 4981 ;; 4982 4983 powerpc*-*-*) 4984 4985 case $target in 4986 *-*-darwin*) 4987 gcc_GAS_CHECK_FEATURE([.machine directive support], 4988 gcc_cv_as_machine_directive,,, 4989 [ .machine ppc7400]) 4990 if test x$gcc_cv_as_machine_directive != xyes; then 4991 echo "*** This target requires an assembler supporting \".machine\"" >&2 4992 echo you can get it from: https://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2 4993 test x$build = x$target && exit 1 4994 fi 4995 ;; 4996 esac 4997 4998 case $target in 4999 *-*-aix*) conftest_s=' .machine "pwr5" 5000 .csect .text[[PR]] 5001 mfcr 3,128';; 5002 *-*-darwin*) conftest_s=' .text 5003 mfcr r3,128';; 5004 *) conftest_s=' .machine power4 5005 .text 5006 mfcr 3,128';; 5007 esac 5008 5009 gcc_GAS_CHECK_FEATURE([mfcr field support], 5010 gcc_cv_as_powerpc_mfcrf, [2,14,0],, 5011 [$conftest_s],, 5012 [AC_DEFINE(HAVE_AS_MFCRF, 1, 5013 [Define if your assembler supports mfcr field.])]) 5014 5015 case $target in 5016 *-*-aix*) conftest_s=' .csect .text[[PR]] 5017LCF..0: 5018 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';; 5019 *-*-darwin*) 5020 conftest_s=' .text 5021LCF0: 5022 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';; 5023 *) conftest_s=' .text 5024.LCF0: 5025 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';; 5026 esac 5027 5028 gcc_GAS_CHECK_FEATURE([rel16 relocs], 5029 gcc_cv_as_powerpc_rel16, [2,17,0], -a32, 5030 [$conftest_s],, 5031 [AC_DEFINE(HAVE_AS_REL16, 1, 5032 [Define if your assembler supports R_PPC_REL16 relocs.])]) 5033 5034 case $target in 5035 *-*-aix*) conftest_s=' .machine "pwr7" 5036 .csect .text[[PR]] 5037 lxvd2x 1,2,3';; 5038 *) conftest_s=' .machine power7 5039 .text 5040 lxvd2x 1,2,3';; 5041 esac 5042 5043 gcc_GAS_CHECK_FEATURE([vector-scalar support], 5044 gcc_cv_as_powerpc_vsx, [2,19,2], -a32, 5045 [$conftest_s],, 5046 [AC_DEFINE(HAVE_AS_VSX, 1, 5047 [Define if your assembler supports VSX instructions.])]) 5048 5049 gcc_GAS_CHECK_FEATURE([.gnu_attribute support], 5050 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],, 5051 [.gnu_attribute 4,1],, 5052 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1, 5053 [Define if your assembler supports .gnu_attribute.])]) 5054 5055 gcc_GAS_CHECK_FEATURE([prologue entry point marker support], 5056 gcc_cv_as_powerpc_entry_markers, [2,26,0],-a64 --fatal-warnings, 5057 [ .reloc .,R_PPC64_ENTRY; nop],, 5058 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1, 5059 [Define if your assembler supports the R_PPC64_ENTRY relocation.])]) 5060 5061 gcc_GAS_CHECK_FEATURE([plt sequence marker support], 5062 gcc_cv_as_powerpc_pltseq_markers, [2,31,0],-a32 --fatal-warnings, 5063 [ .reloc .,R_PPC_PLTSEQ; nop],, 5064 [AC_DEFINE(HAVE_AS_PLTSEQ, 1, 5065 [Define if your assembler supports R_PPC*_PLTSEQ relocations.])]) 5066 5067 case $target in 5068 *-*-aix*) 5069 gcc_GAS_CHECK_FEATURE([AIX .ref support], 5070 gcc_cv_as_aix_ref, [2,21,0],, 5071 [ .csect stuff[[rw]] 5072 stuff: 5073 .long 1 5074 .extern sym 5075 .ref sym 5076 ],, 5077 [AC_DEFINE(HAVE_AS_REF, 1, 5078 [Define if your assembler supports .ref])]) 5079 5080 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support], 5081 gcc_cv_as_aix_dwloc, [2,21,0],, 5082 [ .dwsect 0xA0000 5083 Lframe..0: 5084 .vbyte 4,Lframe..0 5085 ],, 5086 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1, 5087 [Define if your assembler supports AIX debug frame section label reference.])]) 5088 ;; 5089 esac 5090 ;; 5091 5092 mips*-*-*) 5093 gcc_GAS_CHECK_FEATURE([explicit relocation support], 5094 gcc_cv_as_mips_explicit_relocs, [2,14,0],, 5095[ lw $4,%gp_rel(foo)($4)],, 5096 [if test x$target_cpu_default = x 5097 then target_cpu_default=MASK_EXPLICIT_RELOCS 5098 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS" 5099 fi]) 5100 5101 gcc_GAS_CHECK_FEATURE([-mno-shared support], 5102 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],, 5103 [AC_DEFINE(HAVE_AS_NO_SHARED, 1, 5104 [Define if the assembler understands -mno-shared.])]) 5105 5106 gcc_GAS_CHECK_FEATURE([.gnu_attribute support], 5107 gcc_cv_as_mips_gnu_attribute, [2,18,0],, 5108 [.gnu_attribute 4,1],, 5109 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1, 5110 [Define if your assembler supports .gnu_attribute.])]) 5111 5112 gcc_GAS_CHECK_FEATURE([.module support], 5113 gcc_cv_as_mips_dot_module,,[-32], 5114 [.module mips2 5115 .module fp=xx],, 5116 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1, 5117 [Define if your assembler supports .module.])]) 5118 if test x$gcc_cv_as_mips_dot_module = xno \ 5119 && test x$with_fp_32 != x; then 5120 AC_MSG_ERROR( 5121 [Requesting --with-fp-32= requires assembler support for .module.]) 5122 fi 5123 5124 gcc_GAS_CHECK_FEATURE([.micromips support], 5125 gcc_cv_as_micromips_support,,[--fatal-warnings], 5126 [.set micromips],, 5127 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1, 5128 [Define if your assembler supports the .set micromips directive])]) 5129 5130 gcc_GAS_CHECK_FEATURE([.dtprelword support], 5131 gcc_cv_as_mips_dtprelword, [2,18,0],, 5132 [.section .tdata,"awT",@progbits 5133x: 5134 .word 2 5135 .text 5136 .dtprelword x+0x8000],, 5137 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1, 5138 [Define if your assembler supports .dtprelword.])]) 5139 5140 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support], 5141 gcc_cv_as_mips_dspr1_mult,,, 5142[ .set mips32r2 5143 .set nodspr2 5144 .set dsp 5145 madd $ac3,$4,$5 5146 maddu $ac3,$4,$5 5147 msub $ac3,$4,$5 5148 msubu $ac3,$4,$5 5149 mult $ac3,$4,$5 5150 multu $ac3,$4,$5],, 5151 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1, 5152 [Define if your assembler supports DSPR1 mult.])]) 5153 5154 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation) 5155 gcc_cv_as_ld_jalr_reloc=no 5156 if test $gcc_cv_as_mips_explicit_relocs = yes; then 5157 if test $in_tree_ld = yes ; then 5158 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \ 5159 && test $in_tree_ld_is_elf = yes; then 5160 gcc_cv_as_ld_jalr_reloc=yes 5161 fi 5162 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then 5163 echo ' .ent x' > conftest.s 5164 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s 5165 echo ' lw $25,%call16(y)($28)' >> conftest.s 5166 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s 5167 echo '1: jalr $25' >> conftest.s 5168 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s 5169 echo '1: jalr $25' >> conftest.s 5170 echo ' .end x' >> conftest.s 5171 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \ 5172 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then 5173 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \ 5174 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then 5175 gcc_cv_as_ld_jalr_reloc=yes 5176 fi 5177 fi 5178 rm -f conftest.* 5179 fi 5180 fi 5181 if test $gcc_cv_as_ld_jalr_reloc = yes; then 5182 if test x$target_cpu_default = x; then 5183 target_cpu_default=MASK_RELAX_PIC_CALLS 5184 else 5185 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS" 5186 fi 5187 fi 5188 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc) 5189 5190 AC_CACHE_CHECK([linker for .eh_frame personality relaxation], 5191 [gcc_cv_ld_mips_personality_relaxation], 5192 [gcc_cv_ld_mips_personality_relaxation=no 5193 if test $in_tree_ld = yes ; then 5194 if test "$gcc_cv_gld_major_version" -eq 2 \ 5195 -a "$gcc_cv_gld_minor_version" -ge 21 \ 5196 -o "$gcc_cv_gld_major_version" -gt 2; then 5197 gcc_cv_ld_mips_personality_relaxation=yes 5198 fi 5199 elif test x$gcc_cv_as != x \ 5200 -a x$gcc_cv_ld != x \ 5201 -a x$gcc_cv_readelf != x ; then 5202 cat > conftest.s <<EOF 5203 .cfi_startproc 5204 .cfi_personality 0x80,indirect_ptr 5205 .ent test 5206test: 5207 nop 5208 .end test 5209 .cfi_endproc 5210 5211 .section .data,"aw",@progbits 5212indirect_ptr: 5213 .dc.a personality 5214EOF 5215 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \ 5216 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then 5217 if $gcc_cv_readelf -d conftest 2>&1 \ 5218 | grep TEXTREL > /dev/null 2>&1; then 5219 : 5220 elif $gcc_cv_readelf --relocs conftest 2>&1 \ 5221 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then 5222 : 5223 else 5224 gcc_cv_ld_mips_personality_relaxation=yes 5225 fi 5226 fi 5227 fi 5228 rm -f conftest.s conftest.o conftest]) 5229 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then 5230 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1, 5231 [Define if your linker can relax absolute .eh_frame personality 5232pointers into PC-relative form.]) 5233 fi 5234 5235 gcc_GAS_CHECK_FEATURE([-mnan= support], 5236 gcc_cv_as_mips_nan,, 5237 [-mnan=2008],,, 5238 [AC_DEFINE(HAVE_AS_NAN, 1, 5239 [Define if the assembler understands -mnan=.])]) 5240 if test x$gcc_cv_as_mips_nan = xno \ 5241 && test x$with_nan != x; then 5242 AC_MSG_ERROR( 5243 [Requesting --with-nan= requires assembler support for -mnan=]) 5244 fi 5245 ;; 5246 msp430-*-*) 5247 # Earlier GAS versions generically support .gnu_attribute, but the 5248 # msp430 assembler will not do anything with it. 5249 gcc_GAS_CHECK_FEATURE([.gnu_attribute support], 5250 gcc_cv_as_msp430_gnu_attribute, [2,33,50],, 5251 [.gnu_attribute 4,1],, 5252 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1, 5253 [Define if your assembler supports .gnu_attribute.])]) 5254 gcc_GAS_CHECK_FEATURE([.mspabi_attribute support], 5255 gcc_cv_as_msp430_mspabi_attribute, [2,33,50],, 5256 [.mspabi_attribute 4,2],, 5257 [AC_DEFINE(HAVE_AS_MSPABI_ATTRIBUTE, 1, 5258 [Define if your assembler supports .mspabi_attribute.])]) 5259 if test x$enable_newlib_nano_formatted_io = xyes; then 5260 AC_DEFINE(HAVE_NEWLIB_NANO_FORMATTED_IO, 1, [Define if GCC has been 5261configured with --enable-newlib-nano-formatted-io.]) 5262 fi 5263 ;; 5264 nios2-*-*) 5265 # Versions 2.33 and earlier lacked support for the %gotoff relocation 5266 # syntax that is documented in the ABI specification. 5267 gcc_GAS_CHECK_FEATURE([support for %gotoff relocations in constant data], 5268 gcc_cv_as_nios2_gotoff_relocation,,, 5269[ .extern foo 5270 .data 5271 .long %gotoff(foo)],, 5272 [AC_DEFINE(HAVE_AS_NIOS2_GOTOFF_RELOCATION, 1, 5273 [Define if your assembler supports %gotoff relocation syntax.])]) 5274 ;; 5275 riscv*-*-*) 5276 gcc_GAS_CHECK_FEATURE([.attribute support], 5277 gcc_cv_as_riscv_attribute, [2,32,0],, 5278 [.attribute stack_align,4],, 5279 [AC_DEFINE(HAVE_AS_RISCV_ATTRIBUTE, 1, 5280 [Define if your assembler supports .attribute.])]) 5281 gcc_GAS_CHECK_FEATURE([-misa-spec= support], 5282 gcc_cv_as_riscv_isa_spec,, 5283 [-misa-spec=2.2],,, 5284 [AC_DEFINE(HAVE_AS_MISA_SPEC, 1, 5285 [Define if the assembler understands -misa-spec=.])]) 5286 gcc_GAS_CHECK_FEATURE([-march=rv32i_zifencei support], 5287 gcc_cv_as_riscv_march_zifencei,, 5288 [-march=rv32i_zifencei],,, 5289 [AC_DEFINE(HAVE_AS_MARCH_ZIFENCEI, 1, 5290 [Define if the assembler understands -march=rv*_zifencei.])]) 5291 ;; 5292 s390*-*-*) 5293 gcc_GAS_CHECK_FEATURE([.gnu_attribute support], 5294 gcc_cv_as_s390_gnu_attribute, [2,18,0],, 5295 [.gnu_attribute 8,1],, 5296 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1, 5297 [Define if your assembler supports .gnu_attribute.])]) 5298 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support], 5299 gcc_cv_as_s390_machine_machinemode, [2,24,0],, 5300 [ .machinemode push 5301 .machinemode pop 5302 .machine push 5303 .machine pop],, 5304 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1, 5305 [Define if your assembler supports .machine and .machinemode.])]) 5306 gcc_GAS_CHECK_FEATURE([architecture modifiers support], 5307 gcc_cv_as_s390_architecture_modifiers, [2,26,0],, 5308 [ .machine z13+vx ],, 5309 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1, 5310 [Define if your assembler supports architecture modifiers.])]) 5311 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints], 5312 gcc_cv_as_s390_vector_loadstore_alignment_hints, [2,31,0],, 5313 [ vl %v24,0(%r15),3 ],, 5314 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS, 1, 5315 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument.])]) 5316 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints on z13], 5317 gcc_cv_as_s390_vector_loadstore_alignment_hints_on_z13,, [-mzarch -march=z13], 5318 [ vl %v24,0(%r15),3 ],, 5319 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS_ON_Z13, 1, 5320 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument on z13.])]) 5321 5322 ;; 5323esac 5324 5325# Mips and HP-UX need the GNU assembler. 5326# Linux on IA64 might be able to use the Intel assembler. 5327 5328case "$target" in 5329 mips*-*-* | *-*-hpux* ) 5330 if test x$gas_flag = xyes \ 5331 || test x"$host" != x"$build" \ 5332 || test ! -x "$gcc_cv_as" \ 5333 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then 5334 : 5335 else 5336 echo "*** This configuration requires the GNU assembler" >&2 5337 exit 1 5338 fi 5339 ;; 5340esac 5341 5342# ??? Not all targets support dwarf2 debug_line, even within a version 5343# of gas. Moreover, we need to emit a valid instruction to trigger any 5344# info to the output file. So, as supported targets are added to gas 2.11, 5345# add some instruction here to (also) show we expect this might work. 5346# ??? Once 2.11 is released, probably need to add first known working 5347# version to the per-target configury. 5348case "$cpu_type" in 5349 aarch64 | alpha | arc | arm | avr | bfin | cris | csky | i386 | m32c | m68k \ 5350 | microblaze | mips | nds32 | nios2 | pa | riscv | rs6000 | score | sparc \ 5351 | tilegx | tilepro | visium | xstormy16 | xtensa) 5352 insn="nop" 5353 ;; 5354 ia64 | s390) 5355 insn="nop 0" 5356 ;; 5357 mmix) 5358 insn="swym 0" 5359 ;; 5360esac 5361if test x"$insn" != x; then 5362 conftest_s="\ 5363 .file 1 \"conftest.s\" 5364 .loc 1 3 0 5365 $insn" 5366 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support], 5367 gcc_cv_as_dwarf2_debug_line, 5368 [elf,2,11,0],, [$conftest_s], 5369 [if test x$gcc_cv_objdump != x \ 5370 && $gcc_cv_objdump -h conftest.o 2> /dev/null \ 5371 | grep debug_line > /dev/null 2>&1; then 5372 gcc_cv_as_dwarf2_debug_line=yes 5373 elif test x$gcc_cv_otool != x \ 5374 && $gcc_cv_otool -l conftest.o 2> /dev/null \ 5375 | grep debug_line > /dev/null 2>&1; then 5376 gcc_cv_as_dwarf2_debug_line=yes 5377 fi]) 5378 5379# The .debug_line file table must be in the exact order that 5380# we specified the files, since these indices are also used 5381# by DW_AT_decl_file. Approximate this test by testing if 5382# the assembler bitches if the same index is assigned twice. 5383 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive], 5384 gcc_cv_as_dwarf2_file_buggy,,, 5385[ .file 1 "foo.s" 5386 .file 1 "bar.s"]) 5387 5388 if test $gcc_cv_as_dwarf2_debug_line = yes \ 5389 && test $gcc_cv_as_dwarf2_file_buggy = no; then 5390 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1, 5391 [Define if your assembler supports dwarf2 .file/.loc directives, 5392 and preserves file table indices exactly as given.]) 5393 5394 if test $gcc_cv_as_leb128 = yes; then 5395 conftest_s="\ 5396 .file 1 \"conftest.s\" 5397 .loc 1 3 0 view .LVU1 5398 $insn 5399 .data 5400 .uleb128 .LVU1 5401 .uleb128 .LVU1 5402" 5403 gcc_GAS_CHECK_FEATURE([dwarf2 debug_view support], 5404 gcc_cv_as_dwarf2_debug_view, 5405 [elf,2,27,0],,[$conftest_s],, 5406 [AC_DEFINE(HAVE_AS_DWARF2_DEBUG_VIEW, 1, 5407 [Define if your assembler supports views in dwarf2 .loc directives.])]) 5408 fi 5409 fi 5410 5411 gcc_GAS_CHECK_FEATURE([--gdwarf2 option], 5412 gcc_cv_as_gdwarf2_flag, 5413 [elf,2,11,0], [--gdwarf2], [$insn],, 5414 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1, 5415[Define if your assembler supports the --gdwarf2 option.])]) 5416 5417 gcc_GAS_CHECK_FEATURE([--gdwarf-5 option], 5418 gcc_cv_as_gdwarf_5_flag, 5419 [elf,2,36,0], [--gdwarf-5], [$insn], 5420 [if test x$gcc_cv_objdump != x \ 5421 && $gcc_cv_objdump -Wi conftest.o 2>&1 \ 5422 | grep DW_TAG_compile_unit > /dev/null 2>&1; then 5423 gcc_cv_as_gdwarf_5_flag=yes; 5424 fi],[AC_DEFINE(HAVE_AS_GDWARF_5_DEBUG_FLAG, 1, 5425[Define if your assembler supports the --gdwarf-5 option.])]) 5426 5427 case $target_os in 5428 win32 | pe | cygwin* | mingw32*) 5429 section_flags=\"dr\" 5430 function_type=".def foo; .scl 2; .type 32; .endef" 5431 function_size="";; 5432 *) 5433 section_flags=\"\",%progbits 5434 function_type=".type foo, %function" 5435 function_size=".size foo, .-foo";; 5436 esac 5437 dwarf4_debug_info_size=0x46 5438 dwarf4_high_pc_form=7 5439 dwarf4_debug_aranges_size=0x2c 5440 dwarf4_line_sz=9 5441 for dwarf4_addr_size in 8 4; do 5442 conftest_s="\ 5443 .file \"a.c\" 5444 .text 5445.Ltext0: 5446 .p2align 4 5447 .globl foo 5448 $function_type 5449foo: 5450.LFB0: 5451.LM1: 5452 $insn 5453.LM2: 5454.LFE0: 5455 $function_size 5456.Letext0: 5457 .section .debug_info,$section_flags 5458.Ldebug_info0: 5459 .4byte $dwarf4_debug_info_size 5460 .2byte 0x4 5461 .4byte .Ldebug_abbrev0 5462 .byte 0x$dwarf4_addr_size 5463 .byte 0x1 5464 .ascii \"GNU C17\\0\" 5465 .byte 0xc 5466 .ascii \"a.c\\0\" 5467 .ascii \"/\\0\" 5468 .${dwarf4_addr_size}byte .Ltext0 5469 .${dwarf4_addr_size}byte .Letext0-.Ltext0 5470 .4byte .Ldebug_line0 5471 .byte 0x2 5472 .ascii \"foo\\0\" 5473 .byte 0x1 5474 .byte 0x2 5475 .byte 0x1 5476 .${dwarf4_addr_size}byte .LFB0 5477 .${dwarf4_addr_size}byte .LFE0-.LFB0 5478 .byte 0x1 5479 .byte 0x9c 5480 .byte 0 5481 .section .debug_abbrev,$section_flags 5482.Ldebug_abbrev0: 5483 .byte 0x1 5484 .byte 0x11 5485 .byte 0x1 5486 .byte 0x25 5487 .byte 0x8 5488 .byte 0x13 5489 .byte 0xb 5490 .byte 0x3 5491 .byte 0x8 5492 .byte 0x1b 5493 .byte 0x8 5494 .byte 0x11 5495 .byte 0x1 5496 .byte 0x12 5497 .byte 0x$dwarf4_high_pc_form 5498 .byte 0x10 5499 .byte 0x17 5500 .byte 0 5501 .byte 0 5502 .byte 0x2 5503 .byte 0x2e 5504 .byte 0 5505 .byte 0x3f 5506 .byte 0x19 5507 .byte 0x3 5508 .byte 0x8 5509 .byte 0x3a 5510 .byte 0xb 5511 .byte 0x3b 5512 .byte 0xb 5513 .byte 0x39 5514 .byte 0xb 5515 .byte 0x11 5516 .byte 0x1 5517 .byte 0x12 5518 .byte 0x$dwarf4_high_pc_form 5519 .byte 0x40 5520 .byte 0x18 5521 .byte 0 5522 .byte 0 5523 .byte 0 5524 .section .debug_aranges,$section_flags 5525 .4byte $dwarf4_debug_aranges_size 5526 .2byte 0x2 5527 .4byte .Ldebug_info0 5528 .byte 0x8 5529 .byte 0 5530 .2byte 0 5531 .2byte 0 5532 .${dwarf4_addr_size}byte .Ltext0 5533 .${dwarf4_addr_size}byte .Letext0-.Ltext0 5534 .${dwarf4_addr_size}byte 0 5535 .${dwarf4_addr_size}byte 0 5536 .section .debug_line,$section_flags 5537.Ldebug_line0: 5538 .4byte .LELT0-.LSLT0 5539.LSLT0: 5540 .2byte 0x4 5541 .4byte .LELTP0-.LASLTP0 5542.LASLTP0: 5543 .byte 0x1 5544 .byte 0x1 5545 .byte 0x1 5546 .byte 0xf6 5547 .byte 0xf2 5548 .byte 0xd 5549 .byte 0 5550 .byte 0x1 5551 .byte 0x1 5552 .byte 0x1 5553 .byte 0x1 5554 .byte 0 5555 .byte 0 5556 .byte 0 5557 .byte 0x1 5558 .byte 0 5559 .byte 0 5560 .byte 0x1 5561 .byte 0 5562 .ascii \"a.c\\0\" 5563 .byte 0 5564 .byte 0 5565 .byte 0 5566 .byte 0 5567.LELTP0: 5568 .byte 0 5569 .byte 0x$dwarf4_line_sz 5570 .byte 0x2 5571 .${dwarf4_addr_size}byte .LM1 5572 .byte 0x18 5573 .byte 0x5 5574 .byte 0x1 5575 .byte 0 5576 .byte 0x$dwarf4_line_sz 5577 .byte 0x2 5578 .${dwarf4_addr_size}byte .LM2 5579 .byte 0x1 5580 .byte 0x5 5581 .byte 0x1 5582 .byte 0 5583 .byte 0x$dwarf4_line_sz 5584 .byte 0x2 5585 .${dwarf4_addr_size}byte .Letext0 5586 .byte 0 5587 .byte 0x1 5588 .byte 0x1 5589.LELT0: 5590 .section .debug_str,$section_flags 5591 .ident \"GCC\" 5592" 5593 dwarf4_success=no 5594 if test $dwarf4_addr_size = 4; then 5595 gcc_GAS_CHECK_FEATURE([assembly of compiler generated 32-bit .debug_line], 5596 gcc_cv_as_debug_line_32_flag, 5597 [elf,2,36,0], [], [$conftest_s],, 5598 [dwarf4_success=yes]) 5599 else 5600 gcc_GAS_CHECK_FEATURE([assembly of compiler generated 64-bit .debug_line], 5601 gcc_cv_as_debug_line_64_flag, 5602 [elf,2,36,0], [], [$conftest_s],, 5603 [dwarf4_success=yes]) 5604 fi 5605 if test $dwarf4_success = yes; then 5606 dwarf4_success=no 5607 gcc_GAS_CHECK_FEATURE([--gdwarf-4 not refusing compiler generated .debug_line], 5608 gcc_cv_as_dwarf_4_debug_line_flag, 5609 [elf,2,36,0], [--gdwarf-4], [$conftest_s],, 5610 [dwarf4_success=yes]) 5611 break 5612 fi 5613 dwarf4_debug_info_size=0x36 5614 dwarf4_high_pc_form=6 5615 dwarf4_debug_aranges_size=0x1c 5616 dwarf4_line_sz=5 5617 done 5618 5619 if test $dwarf4_success = yes; then 5620 conftest_s="\ 5621 .file \"foo.c\" 5622 .text 5623bar: 5624#APP 5625# 82 \"xxx.h\" 1 5626 $insn 5627# 0 \"\" 2 5628#NO_APP 5629 $insn 5630foo: 5631 .file 1 \"foo.c\" 5632 $insn 5633 .file 2 \"foo.h\" 5634 ret 5635" 5636 dwarf4_success=no 5637 gcc_GAS_CHECK_FEATURE([--gdwarf-4 with the APP marker], 5638 gcc_cv_as_dwarf_4_app_flag,, 5639 [--gdwarf-4], [$conftest_s],, [dwarf4_success=yes]) 5640 fi 5641 5642 if test $dwarf4_success = yes; then 5643 conftest_s="\ 5644 .text 5645 .globl foo 5646 $function_type 5647foo: 5648 $insn 5649 $function_size 5650 .file 1 \"foo.c\" 5651" 5652 gcc_GAS_CHECK_FEATURE([working --gdwarf-4/--gdwarf-5 for all sources], 5653 gcc_cv_as_working_gdwarf_n_flag,, 5654 [--gdwarf-4], 5655 [$conftest_s], 5656 [changequote(,)dnl 5657 if test x$gcc_cv_objdump != x \ 5658 && $gcc_cv_objdump -W conftest.o 2>&1 \ 5659 | grep conftest.s > /dev/null 2>&1; then 5660 gcc_cv_as_working_gdwarf_n_flag=no 5661 else 5662 gcc_cv_as_working_gdwarf_n_flag=yes 5663 fi 5664 changequote([,])dnl]) 5665 if test $gcc_cv_as_working_gdwarf_n_flag = yes; then 5666 AC_DEFINE(HAVE_AS_WORKING_DWARF_N_FLAG, 1, 5667[Define if your assembler supports --gdwarf-4/--gdwarf-5 even with 5668 compiler generated .debug_line.]) 5669 fi 5670 fi 5671 5672 gcc_GAS_CHECK_FEATURE([--gstabs option], 5673 gcc_cv_as_gstabs_flag, 5674 [elf,2,11,0], [--gstabs], [$insn],, 5675 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1, 5676[Define if your assembler supports the --gstabs option.])]) 5677 5678 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option], 5679 gcc_cv_as_debug_prefix_map_flag, 5680 [2,18,0], [--debug-prefix-map /a=/b], [$insn],, 5681 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1, 5682[Define if your assembler supports the --debug-prefix-map option.])]) 5683fi 5684 5685gcc_GAS_CHECK_FEATURE([compressed debug sections], 5686 gcc_cv_as_compress_debug,,,, 5687 [# gas compiled without zlib cannot compress debug sections and warns 5688 # about it, but still exits successfully. So check for this, too. 5689 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null 5690 then 5691 gcc_cv_as_compress_debug=0 5692 # Since binutils 2.26, gas supports --compress-debug-sections=type, 5693 # defaulting to the ELF gABI format. 5694 elif $gcc_cv_as --compress-debug-sections=zlib-gnu -o conftest.o conftest.s > /dev/null 2>&1 5695 then 5696 gcc_cv_as_compress_debug=2 5697 gcc_cv_as_compress_debug_option="--compress-debug-sections" 5698 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections" 5699 # Before binutils 2.26, gas only supported --compress-debug-options and 5700 # emitted the traditional GNU format. 5701 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1 5702 then 5703 gcc_cv_as_compress_debug=1 5704 gcc_cv_as_compress_debug_option="--compress-debug-sections" 5705 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections" 5706 else 5707 gcc_cv_as_compress_debug=0 5708 fi]) 5709AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug, 5710[Define to the level of your assembler's compressed debug section support.]) 5711AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option", 5712[Define to the assembler option to enable compressed debug sections.]) 5713AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option", 5714[Define to the assembler option to disable compressed debug sections.]) 5715 5716gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment, 5717 ,, 5718[.lcomm bar,4,16],, 5719[AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1, 5720 [Define if your assembler supports .lcomm with an alignment field.])]) 5721 5722if test x$with_sysroot = x && test x$host = x$target \ 5723 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \ 5724 && test "$prefix" != "NONE"; then 5725 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include", 5726[Define to PREFIX/include if cpp should also search that directory.]) 5727fi 5728 5729# Determine the version of glibc, if any, used on the target. 5730AC_MSG_CHECKING([for target glibc version]) 5731AC_ARG_WITH([glibc-version], 5732 [AS_HELP_STRING([--with-glibc-version=M.N], 5733 [assume GCC used with glibc version M.N or later])], [ 5734if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then 5735 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'` 5736 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'` 5737else 5738 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N]) 5739fi], [ 5740glibc_version_major=0 5741glibc_version_minor=0 5742[if test -f $target_header_dir/features.h \ 5743 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \ 5744 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then 5745 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'` 5746 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'` 5747fi]]) 5748AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor]) 5749AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major], 5750[GNU C Library major version number used on the target, or 0.]) 5751AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor], 5752[GNU C Library minor version number used on the target, or 0.]) 5753 5754AC_ARG_ENABLE(gnu-unique-object, 5755 [AS_HELP_STRING([--enable-gnu-unique-object], 5756 [enable the use of the @gnu_unique_object ELF extension on glibc systems])], 5757 [case $enable_gnu_unique_object in 5758 yes | no) ;; 5759 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object. 5760Valid choices are 'yes' and 'no'.]) ;; 5761 esac], 5762 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object, 5763 [elf,2,19,52],, 5764 [.type foo, '$target_type_format_char'gnu_unique_object],, 5765# We need to unquote above to to use the definition from config.gcc. 5766# Also check for ld.so support, i.e. glibc 2.11 or higher. 5767 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )] 5768 )]) 5769if test x$enable_gnu_unique_object = xyes; then 5770 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1, 5771 [Define if your assembler supports @gnu_unique_object.]) 5772fi 5773 5774AC_CACHE_CHECK([assembler for tolerance to line number 0], 5775 [gcc_cv_as_line_zero], 5776 [gcc_cv_as_line_zero=no 5777 if test $in_tree_gas = yes; then 5778 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes]) 5779 elif test "x$gcc_cv_as" != x; then 5780 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s 5781 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) && 5782 test "x`cat conftest.out`" = x 5783 then 5784 gcc_cv_as_line_zero=yes 5785 else 5786 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD 5787 cat conftest.s >&AS_MESSAGE_LOG_FD 5788 echo "configure: error output was" >&AS_MESSAGE_LOG_FD 5789 cat conftest.out >&AS_MESSAGE_LOG_FD 5790 fi 5791 rm -f conftest.o conftest.s conftest.out 5792 fi]) 5793if test "x$gcc_cv_as_line_zero" = xyes; then 5794 AC_DEFINE([HAVE_AS_LINE_ZERO], 1, 5795[Define if the assembler won't complain about a line such as # 0 "" 2.]) 5796fi 5797 5798AC_MSG_CHECKING(support for thin archives) 5799thin_archive_support=no 5800echo 'int main (void) { return 0; }' > conftest.c 5801if ($AR --version | sed 1q | grep "GNU ar" \ 5802 && $CC $CFLAGS -c conftest.c \ 5803 && $AR rcT conftest.a conftest.o \ 5804 && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then 5805 thin_archive_support=yes 5806fi 5807rm -f conftest.c conftest.o conftest.a conftest 5808AC_MSG_RESULT($thin_archive_support) 5809AC_SUBST(thin_archive_support) 5810 5811AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support) 5812gcc_cv_ld_eh_frame_hdr=no 5813if test $in_tree_ld = yes ; then 5814 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \ 5815 && test $in_tree_ld_is_elf = yes; then 5816 gcc_cv_ld_eh_frame_hdr=yes 5817 fi 5818elif test x$gcc_cv_ld != x; then 5819 if echo "$ld_ver" | grep GNU > /dev/null; then 5820 # Check if linker supports --eh-frame-hdr option 5821 if $gcc_cv_ld --help 2>&1 | grep eh-frame-hdr > /dev/null; then 5822 gcc_cv_ld_eh_frame_hdr=yes 5823 fi 5824 else 5825 case "$target" in 5826 *-*-solaris2*) 5827 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251. 5828 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then 5829 gcc_cv_ld_eh_frame_hdr=yes 5830 fi 5831 ;; 5832 esac 5833 fi 5834fi 5835GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR]) 5836if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then 5837 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1, 5838[Define if your linker supports .eh_frame_hdr.]) 5839fi 5840AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr) 5841 5842AC_MSG_CHECKING(linker CIEv3 in .eh_frame support) 5843gcc_cv_ld_eh_frame_ciev3=no 5844if test $in_tree_ld = yes ; then 5845 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \ 5846 && test $in_tree_ld_is_elf = yes; then 5847 gcc_cv_ld_eh_frame_ciev3=yes 5848 fi 5849elif test x$gcc_cv_ld != x; then 5850 if echo "$ld_ver" | grep GNU > /dev/null; then 5851 gcc_cv_ld_eh_frame_ciev3=yes 5852 if test 0"$ld_date" -lt 20040513; then 5853 if test -n "$ld_date"; then 5854 # If there was date string, but was earlier than 2004-05-13, fail 5855 gcc_cv_ld_eh_frame_ciev3=no 5856 elif test "$ld_vers_major" -lt 2; then 5857 gcc_cv_ld_eh_frame_ciev3=no 5858 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then 5859 gcc_cv_ld_eh_frame_ciev3=no 5860 fi 5861 fi 5862 else 5863 case "$target" in 5864 *-*-solaris2*) 5865 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1. 5866 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then 5867 gcc_cv_ld_eh_frame_ciev3=yes 5868 fi 5869 ;; 5870 esac 5871 fi 5872fi 5873AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3, 5874 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`], 5875 [Define 0/1 if your linker supports CIE v3 in .eh_frame.]) 5876AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3) 5877 5878AC_MSG_CHECKING(linker position independent executable support) 5879gcc_cv_ld_pie=no 5880if test $in_tree_ld = yes ; then 5881 case "$target" in 5882 # Full PIE support on Solaris was only introduced in gld 2.26. 5883 *-*-solaris2*) gcc_gld_pie_min_version=26 ;; 5884 *) gcc_gld_pie_min_version=15 ;; 5885 esac 5886 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge "$gcc_gld_pie_min_version" -o "$gcc_cv_gld_major_version" -gt 2 \ 5887 && test $in_tree_ld_is_elf = yes; then 5888 gcc_cv_ld_pie=yes 5889 fi 5890elif test x$gcc_cv_ld != x; then 5891 # Check if linker supports -pie option 5892 if $gcc_cv_ld --help 2>&1 | grep -- -pie > /dev/null; then 5893 gcc_cv_ld_pie=yes 5894 case "$target" in 5895 *-*-solaris2*) 5896 if echo "$ld_ver" | grep GNU > /dev/null \ 5897 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then 5898 gcc_cv_ld_pie=no 5899 fi 5900 ;; 5901 esac 5902 else 5903 case "$target" in 5904 *-*-solaris2.1[[1-9]]*) 5905 # Solaris 11.3 added PIE support. 5906 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then 5907 gcc_cv_ld_pie=yes 5908 fi 5909 ;; 5910 esac 5911 fi 5912fi 5913if test x"$gcc_cv_ld_pie" = xyes; then 5914 AC_DEFINE(HAVE_LD_PIE, 1, 5915[Define if your linker supports PIE option.]) 5916fi 5917AC_MSG_RESULT($gcc_cv_ld_pie) 5918 5919AC_MSG_CHECKING(linker PIE support with copy reloc) 5920gcc_cv_ld_pie_copyreloc=no 5921if test $gcc_cv_ld_pie = yes ; then 5922 if test $in_tree_ld = yes ; then 5923 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then 5924 gcc_cv_ld_pie_copyreloc=yes 5925 fi 5926 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then 5927 # Check if linker supports -pie option with copy reloc 5928 case "$target" in 5929 i?86-*-linux* | x86_64-*-linux*) 5930 cat > conftest1.s <<EOF 5931 .globl a_glob 5932 .data 5933 .type a_glob, @object 5934 .size a_glob, 4 5935a_glob: 5936 .long 2 5937EOF 5938 cat > conftest2.s <<EOF 5939 .text 5940 .globl main 5941 .type main, @function 5942main: 5943 movl %eax, a_glob(%rip) 5944 .size main, .-main 5945 .globl ptr 5946 .section .data.rel,"aw",@progbits 5947 .type ptr, @object 5948ptr: 5949 .quad a_glob 5950EOF 5951 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \ 5952 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \ 5953 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \ 5954 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then 5955 gcc_cv_ld_pie_copyreloc=yes 5956 fi 5957 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s 5958 ;; 5959 esac 5960 fi 5961fi 5962AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC, 5963 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`], 5964 [Define 0/1 if your linker supports -pie option with copy reloc.]) 5965AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc) 5966 5967AC_MSG_CHECKING(linker EH-compatible garbage collection of sections) 5968gcc_cv_ld_eh_gc_sections=no 5969if test $in_tree_ld = yes ; then 5970 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \ 5971 && test $in_tree_ld_is_elf = yes; then 5972 gcc_cv_ld_eh_gc_sections=yes 5973 fi 5974elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then 5975 cat > conftest.s <<EOF 5976 .section .text 5977.globl _start 5978 .type _start, @function 5979_start: 5980 .long foo 5981 .size _start, .-_start 5982 .section .text.foo,"ax",@progbits 5983 .type foo, @function 5984foo: 5985 .long 0 5986 .size foo, .-foo 5987 .section .gcc_except_table.foo,"a",@progbits 5988.L0: 5989 .long 0 5990 .section .eh_frame,"a",@progbits 5991 .long .L0 5992EOF 5993 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then 5994 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \ 5995 | grep "gc-sections option ignored" > /dev/null; then 5996 gcc_cv_ld_eh_gc_sections=no 5997 elif $gcc_cv_objdump -h conftest 2> /dev/null \ 5998 | grep gcc_except_table > /dev/null; then 5999 gcc_cv_ld_eh_gc_sections=yes 6000 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections. 6001 if test x$gcc_cv_as_comdat_group != xyes; then 6002 gcc_cv_ld_eh_gc_sections=no 6003 cat > conftest.s <<EOF 6004 .section .text 6005.globl _start 6006 .type _start, @function 6007_start: 6008 .long foo 6009 .size _start, .-_start 6010 .section .gnu.linkonce.t.foo,"ax",@progbits 6011 .type foo, @function 6012foo: 6013 .long 0 6014 .size foo, .-foo 6015 .section .gcc_except_table.foo,"a",@progbits 6016.L0: 6017 .long 0 6018 .section .eh_frame,"a",@progbits 6019 .long .L0 6020EOF 6021 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then 6022 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \ 6023 | grep "gc-sections option ignored" > /dev/null; then 6024 gcc_cv_ld_eh_gc_sections=no 6025 elif $gcc_cv_objdump -h conftest 2> /dev/null \ 6026 | grep gcc_except_table > /dev/null; then 6027 gcc_cv_ld_eh_gc_sections=yes 6028 fi 6029 fi 6030 fi 6031 fi 6032 fi 6033 rm -f conftest.s conftest.o conftest 6034fi 6035case "$target" in 6036 hppa*-*-linux*) 6037 # ??? This apparently exposes a binutils bug with PC-relative relocations. 6038 gcc_cv_ld_eh_gc_sections=no 6039 ;; 6040esac 6041if test x$gcc_cv_ld_eh_gc_sections = xyes; then 6042 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1, 6043 [Define if your linker supports garbage collection of 6044 sections in presence of EH frames.]) 6045fi 6046AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections) 6047 6048AC_MSG_CHECKING(linker EH garbage collection of sections bug) 6049gcc_cv_ld_eh_gc_sections_bug=no 6050if test $in_tree_ld = yes ; then 6051 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \ 6052 && test $in_tree_ld_is_elf = yes; then 6053 gcc_cv_ld_eh_gc_sections_bug=yes 6054 fi 6055elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x -a x$gcc_cv_as_comdat_group = xyes; then 6056 gcc_cv_ld_eh_gc_sections_bug=yes 6057 cat > conftest.s <<EOF 6058 .section .text 6059.globl _start 6060 .type _start, @function 6061_start: 6062 .long foo 6063 .size _start, .-_start 6064 .section .text.startup.foo,"ax",@progbits 6065 .type foo, @function 6066foo: 6067 .long 0 6068 .size foo, .-foo 6069 .section .gcc_except_table.foo,"a",@progbits 6070.L0: 6071 .long 0 6072 .section .eh_frame,"a",@progbits 6073 .long .L0 6074EOF 6075 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then 6076 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \ 6077 | grep "gc-sections option ignored" > /dev/null; then 6078 : 6079 elif $gcc_cv_objdump -h conftest 2> /dev/null \ 6080 | grep gcc_except_table > /dev/null; then 6081 gcc_cv_ld_eh_gc_sections_bug=no 6082 fi 6083 fi 6084 rm -f conftest.s conftest.o conftest 6085fi 6086if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then 6087 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1, 6088 [Define if your linker has buggy garbage collection of 6089 sections support when .text.startup.foo like sections are used.]) 6090fi 6091AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug) 6092 6093AC_MSG_CHECKING(linker for compressed debug sections) 6094# gold/gld support compressed debug sections since binutils 2.19/2.21 6095# In binutils 2.26, gld gained support for the ELF gABI format. 6096if test $in_tree_ld = yes ; then 6097 gcc_cv_ld_compress_debug=0 6098 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \ 6099 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then 6100 gcc_cv_ld_compress_debug=2 6101 gcc_cv_ld_compress_debug_option="--compress-debug-sections" 6102 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 26 -o "$gcc_cv_gld_major_version" -gt 2 \ 6103 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = no; then 6104 gcc_cv_ld_compress_debug=3 6105 gcc_cv_ld_compress_debug_option="--compress-debug-sections" 6106 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \ 6107 && test $in_tree_ld_is_elf = yes; then 6108 gcc_cv_ld_compress_debug=1 6109 fi 6110elif echo "$ld_ver" | grep GNU > /dev/null; then 6111 if test "$ld_vers_major" -lt 2 \ 6112 || test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then 6113 gcc_cv_ld_compress_debug=0 6114 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then 6115 gcc_cv_ld_compress_debug=1 6116 else 6117 gcc_cv_ld_compress_debug=3 6118 gcc_cv_ld_compress_debug_option="--compress-debug-sections" 6119 fi 6120 if test $ld_is_gold = yes; then 6121 gcc_cv_ld_compress_debug=2 6122 gcc_cv_ld_compress_debug_option="--compress-debug-sections" 6123 fi 6124else 6125changequote(,)dnl 6126 case "${target}" in 6127 *-*-solaris2*) 6128 # Introduced in Solaris 11.2. 6129 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then 6130 gcc_cv_ld_compress_debug=3 6131 gcc_cv_ld_compress_debug_option="-z compress-sections" 6132 else 6133 gcc_cv_ld_compress_debug=0 6134 fi 6135 ;; 6136 *) 6137 # Assume linkers other than GNU ld don't support compessed debug 6138 # sections. 6139 gcc_cv_ld_compress_debug=0 6140 ;; 6141 esac 6142changequote([,])dnl 6143fi 6144AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug, 6145[Define to the level of your linker's compressed debug section support.]) 6146AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option", 6147[Define to the linker option to enable compressed debug sections.]) 6148AC_MSG_RESULT($gcc_cv_ld_compress_debug) 6149 6150if test x"$ld64_flag" = x"yes"; then 6151 6152 # Set defaults for possibly untestable items. 6153 gcc_cv_ld64_export_dynamic=0 6154 6155 if test "$build" = "$host"; then 6156 darwin_try_test=1 6157 else 6158 darwin_try_test=0 6159 fi 6160 6161 # On Darwin, because of FAT library support, it is often possible to execute 6162 # exes from compatible archs even when the host differs from the build system. 6163 case "$build","$host" in 6164 x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*) 6165 darwin_try_test=1;; 6166 *) ;; 6167 esac 6168 6169 # If the configurer specified a minimum ld64 version to be supported, then use 6170 # that to determine feature support. 6171 if test x"${gcc_cv_ld64_version}" != x; then 6172 AC_MSG_CHECKING(ld64 specified version) 6173 gcc_cv_ld64_major=`echo "$gcc_cv_ld64_version" | sed -e 's/\..*//'` 6174 AC_MSG_RESULT($gcc_cv_ld64_major) 6175 if test "$gcc_cv_ld64_major" -ge 236; then 6176 gcc_cv_ld64_export_dynamic=1 6177 fi 6178 elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then 6179 # If the version was not specified, try to find it. 6180 AC_MSG_CHECKING(linker version) 6181 if test x"${gcc_cv_ld64_version}" = x; then 6182 gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | grep ld64 | sed s/.*ld64-// | awk '{print $1}'` 6183 fi 6184 AC_MSG_RESULT($gcc_cv_ld64_version) 6185 6186 AC_MSG_CHECKING(linker for -export_dynamic support) 6187 gcc_cv_ld64_export_dynamic=1 6188 if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then 6189 gcc_cv_ld64_export_dynamic=0 6190 fi 6191 AC_MSG_RESULT($gcc_cv_ld64_export_dynamic) 6192 fi 6193 6194 if test x"${gcc_cv_ld64_version}" != x; then 6195 AC_DEFINE_UNQUOTED(LD64_VERSION, "${gcc_cv_ld64_version}", 6196 [Define to ld64 version.]) 6197 fi 6198 6199 AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic, 6200 [Define to 1 if ld64 supports '-export_dynamic'.]) 6201fi 6202 6203case $target_os in 6204 win32 | pe | cygwin* | mingw32*) 6205 AC_MSG_CHECKING(broken PE linker dwarf5 support) 6206 gcc_cv_ld_broken_pe_dwarf5=yes 6207 if test $in_tree_ld = yes ; then 6208 if grep -q '\.debug_loclists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \ 6209 $gcc_cv_ld_gld_srcdir/scripttempl/pe*.sc \ 6210 && grep -q '\.debug_rnglists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \ 6211 $gcc_cv_ld_gld_srcdir/scripttempl/pe*.sc; then 6212 gcc_cv_ld_broken_pe_dwarf5=no 6213 fi 6214 else 6215 if $gcc_cv_ld --verbose 2>&1 | grep -q '\.debug_loclists.*BLOCK.*__section_alignment__.*NOLOAD.*:' \ 6216 && $gcc_cv_ld --verbose 2>&1 | grep -q '\.debug_rnglists.*BLOCK.*__section_alignment__.*NOLOAD.*:'; then 6217 gcc_cv_ld_broken_pe_dwarf5=no 6218 fi 6219 fi 6220 if test x$gcc_cv_ld_broken_pe_dwarf5 = xyes; then 6221 AC_DEFINE(HAVE_LD_BROKEN_PE_DWARF5, 1, 6222 [Define if the PE linker has broken DWARF 5 support.]) 6223 fi 6224 AC_MSG_RESULT($gcc_cv_ld_broken_pe_dwarf5) 6225 ;; 6226esac 6227 6228# -------- 6229# UNSORTED 6230# -------- 6231 6232AC_CACHE_CHECK(linker --as-needed support, 6233gcc_cv_ld_as_needed, 6234[gcc_cv_ld_as_needed=no 6235gcc_cv_ld_as_needed_option='--as-needed' 6236gcc_cv_ld_no_as_needed_option='--no-as-needed' 6237if test $in_tree_ld = yes ; then 6238 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \ 6239 && test $in_tree_ld_is_elf = yes; then 6240 gcc_cv_ld_as_needed=yes 6241 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 28; then 6242 gcc_cv_ld_as_needed_option='--push-state --as-needed' 6243 gcc_cv_ld_no_as_needed_option='--pop-state' 6244 fi 6245 fi 6246elif test x$gcc_cv_ld != x; then 6247 # Check if linker supports --as-needed and --no-as-needed options 6248 if $gcc_cv_ld --help 2>&1 | grep as-needed > /dev/null; then 6249 gcc_cv_ld_as_needed=yes 6250 if $gcc_cv_ld --help 2>&1 | grep push-state > /dev/null \ 6251 && $gcc_cv_ld --help 2>&1 | grep pop-state > /dev/null \ 6252 && echo "$ld_ver" | grep GNU > /dev/null \ 6253 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 28; then 6254 # Use these options only when both ld.bfd and ld.gold support 6255 # --push-state/--pop-state, which unfortunately wasn't added 6256 # at the same time. 6257 gcc_cv_ld_as_needed_option='--push-state --as-needed' 6258 gcc_cv_ld_no_as_needed_option='--pop-state' 6259 fi 6260 fi 6261 case "$target:$gnu_ld" in 6262 *-*-solaris2*:no) 6263 # Solaris 2 ld always supports -z ignore/-z record. Prefer the native 6264 # forms. 6265 gcc_cv_ld_as_needed=yes 6266 gcc_cv_ld_as_needed_option="-z ignore" 6267 gcc_cv_ld_no_as_needed_option="-z record" 6268 ;; 6269 esac 6270fi 6271# --as-needed/-z ignore can only be used if libgcc_s.so.1 uses 6272# dl_iterate_phdr, i.e. since Solaris 11. 6273case "$target" in 6274 *-*-solaris2.1[[1-9]]*) 6275 case "$target" in 6276 i?86-*-* | x86_64-*-*) 6277 if echo "$ld_ver" | grep GNU > /dev/null; then 6278 # Doesn't work with gld on Solaris/x86 due to PR ld/12320. 6279 gcc_cv_ld_as_needed=no 6280 fi 6281 ;; 6282 esac 6283 ;; 6284 *-*-solaris2*) 6285 gcc_cv_ld_as_needed=no 6286 ;; 6287esac 6288]) 6289if test x"$gcc_cv_ld_as_needed" = xyes; then 6290 AC_DEFINE(HAVE_LD_AS_NEEDED, 1, 6291[Define if your linker supports --as-needed/--no-as-needed or equivalent options.]) 6292 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option", 6293[Define to the linker option to ignore unused dependencies.]) 6294 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option", 6295[Define to the linker option to keep unused dependencies.]) 6296fi 6297 6298AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities) 6299saved_LDFLAGS="$LDFLAGS" 6300for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do 6301 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map" 6302 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])], 6303 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no]) 6304done 6305LDFLAGS="$saved_LDFLAGS" 6306if test "x$gcc_cv_ld_clearcap" = xyes; then 6307 AC_DEFINE([HAVE_LD_CLEARCAP], 1, 6308[Define if the linker supports clearing hardware capabilities via mapfile.]) 6309 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map]) 6310fi 6311AC_MSG_RESULT($gcc_cv_ld_clearcap) 6312 6313case "$target" in 6314 powerpc*-*-*) 6315 case "$target" in 6316 *le-*-linux*) 6317 emul_name="-melf32lppc" 6318 ;; 6319 *) 6320 emul_name="-melf32ppc" 6321 ;; 6322 esac 6323 AC_CACHE_CHECK(linker .gnu.attributes long double support, 6324 gcc_cv_ld_ppc_attr, 6325 [gcc_cv_ld_ppc_attr=no 6326 if test x"$ld_is_gold" = xyes; then 6327 gcc_cv_ld_ppc_attr=yes 6328 elif test $in_tree_ld = yes ; then 6329 if test "$gcc_cv_gld_major_version" -eq 2 \ 6330 -a "$gcc_cv_gld_minor_version" -ge 28 \ 6331 -o "$gcc_cv_gld_major_version" -gt 2; then 6332 gcc_cv_ld_ppc_attr=yes 6333 fi 6334 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then 6335 # check that merging the long double .gnu_attribute doesn't warn 6336 cat > conftest1.s <<EOF 6337 .gnu_attribute 4,1 6338EOF 6339 cat > conftest2.s <<EOF 6340 .gnu_attribute 4,9 6341EOF 6342 if $gcc_cv_as -a32 -o conftest1.o conftest1.s > /dev/null 2>&1 \ 6343 && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \ 6344 && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \ 6345 && test ! -s conftest.err; then 6346 gcc_cv_ld_ppc_attr=yes 6347 fi 6348 rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s 6349 fi 6350 ]) 6351 if test x$gcc_cv_ld_ppc_attr = xyes; then 6352 AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1, 6353 [Define if your PowerPC linker has .gnu.attributes long double support.]) 6354 fi 6355 ;; 6356esac 6357 6358case "$target:$tm_file" in 6359 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*) 6360 case "$target" in 6361 *le-*-linux*) 6362 emul_name="-melf64lppc" 6363 ;; 6364 *-*-linux*) 6365 emul_name="-melf64ppc" 6366 ;; 6367 *le-*-freebsd*) 6368 emul_name="-melf64lppc_fbsd" 6369 ;; 6370 *-*-freebsd*) 6371 emul_name="-melf64ppc_fbsd" 6372 ;; 6373 esac 6374 AC_CACHE_CHECK(linker support for omitting dot symbols, 6375 gcc_cv_ld_no_dot_syms, 6376 [gcc_cv_ld_no_dot_syms=no 6377 if test x"$ld_is_gold" = xyes; then 6378 gcc_cv_ld_no_dot_syms=yes 6379 elif test $in_tree_ld = yes ; then 6380 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then 6381 gcc_cv_ld_no_dot_syms=yes 6382 fi 6383 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then 6384 cat > conftest1.s <<EOF 6385 .text 6386 bl .foo 6387EOF 6388 cat > conftest2.s <<EOF 6389 .section ".opd","aw" 6390 .align 3 6391 .globl foo 6392 .type foo,@function 6393foo: 6394 .quad .LEfoo,.TOC.@tocbase,0 6395 .text 6396.LEfoo: 6397 blr 6398 .size foo,.-.LEfoo 6399EOF 6400 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \ 6401 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \ 6402 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then 6403 gcc_cv_ld_no_dot_syms=yes 6404 fi 6405 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s 6406 fi 6407 ]) 6408 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then 6409 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1, 6410 [Define if your PowerPC64 linker only needs function descriptor syms.]) 6411 fi 6412 6413 AC_CACHE_CHECK(linker large toc support, 6414 gcc_cv_ld_large_toc, 6415 [gcc_cv_ld_large_toc=no 6416 if test x"$ld_is_gold" = xyes; then 6417 gcc_cv_ld_large_toc=yes 6418 elif test $in_tree_ld = yes ; then 6419 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then 6420 gcc_cv_ld_large_toc=yes 6421 fi 6422 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then 6423 cat > conftest.s <<EOF 6424 .section ".tbss","awT",@nobits 6425 .align 3 6426ie0: .space 8 6427 .global _start 6428 .text 6429_start: 6430 addis 9,13,ie0@got@tprel@ha 6431 ld 9,ie0@got@tprel@l(9) 6432EOF 6433 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \ 6434 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then 6435 gcc_cv_ld_large_toc=yes 6436 fi 6437 rm -f conftest conftest.o conftest.s 6438 fi 6439 ]) 6440 if test x"$gcc_cv_ld_large_toc" = xyes; then 6441 AC_DEFINE(HAVE_LD_LARGE_TOC, 1, 6442 [Define if your PowerPC64 linker supports a large TOC.]) 6443 fi 6444 6445 AC_CACHE_CHECK(linker toc pointer alignment, 6446 gcc_cv_ld_toc_align, 6447 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then 6448 cat > conftest.s <<EOF 6449 .global _start 6450 .text 6451_start: 6452 addis 9,2,x@got@ha 6453 .section .data.rel.ro,"aw",@progbits 6454 .p2align 16 6455 .space 32768 6456x: .quad .TOC. 6457EOF 6458 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \ 6459 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then 6460 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'` 6461 fi 6462 rm -f conftest conftest.o conftest.s 6463 fi 6464 ]) 6465 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then 6466 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align, 6467 [Define to .TOC. alignment forced by your linker.]) 6468 fi 6469 ;; 6470esac 6471 6472case "$target" in 6473 *-*-aix*) 6474 AC_CACHE_CHECK(linker large toc support, 6475 gcc_cv_ld_large_toc, 6476 [gcc_cv_ld_large_toc=no 6477 if test x$gcc_cv_as != x ; then 6478 cat > conftest.s <<EOF 6479 .toc 6480LC..1: 6481 .tc a[[TC]],a[[RW]] 6482 .extern a[[RW]] 6483 .csect .text[[PR]] 6484.largetoctest: 6485 addis 9,LC..1@u(2) 6486 ld 3,LC..1@l(9) 6487EOF 6488 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then 6489 gcc_cv_ld_large_toc=yes 6490 fi 6491 rm -f conftest conftest.o conftest.s 6492 fi 6493 ]) 6494 if test x"$gcc_cv_ld_large_toc" = xyes; then 6495 AC_DEFINE(HAVE_LD_LARGE_TOC, 1, 6496 [Define if your PowerPC64 linker supports a large TOC.]) 6497 fi 6498 ;; 6499esac 6500 6501AC_CACHE_CHECK(linker --build-id support, 6502 gcc_cv_ld_buildid, 6503 [gcc_cv_ld_buildid=no 6504 if test $in_tree_ld = yes ; then 6505 if test "$gcc_cv_gld_major_version" -eq 2 -a \ 6506 "$gcc_cv_gld_minor_version" -ge 18 -o \ 6507 "$gcc_cv_gld_major_version" -gt 2 \ 6508 && test $in_tree_ld_is_elf = yes; then 6509 gcc_cv_ld_buildid=yes 6510 fi 6511 elif test x$gcc_cv_ld != x; then 6512 if $gcc_cv_ld --help 2>&1 | grep build-id > /dev/null; then 6513 gcc_cv_ld_buildid=yes 6514 fi 6515 fi]) 6516if test x"$gcc_cv_ld_buildid" = xyes; then 6517 AC_DEFINE(HAVE_LD_BUILDID, 1, 6518 [Define if your linker supports --build-id.]) 6519fi 6520 6521AC_ARG_ENABLE(linker-build-id, 6522[AS_HELP_STRING([--enable-linker-build-id], 6523 [compiler will always pass --build-id to linker])], 6524[], 6525enable_linker_build_id=no) 6526 6527if test x"$enable_linker_build_id" = xyes; then 6528 if test x"$gcc_cv_ld_buildid" = xyes; then 6529 AC_DEFINE(ENABLE_LD_BUILDID, 1, 6530 [Define if gcc should always pass --build-id to linker.]) 6531 else 6532 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored) 6533 fi 6534fi 6535 6536# In binutils 2.21, GNU ld gained support for new emulations fully 6537# supporting the Solaris 2 ABI. Detect their presence in the linker used. 6538AC_CACHE_CHECK(linker *_sol2 emulation support, 6539 gcc_cv_ld_sol2_emulation, 6540 [gcc_cv_ld_sol2_emulation=no 6541 if test $in_tree_ld = yes ; then 6542 if test "$gcc_cv_gld_major_version" -eq 2 -a \ 6543 "$gcc_cv_gld_minor_version" -ge 21 -o \ 6544 "$gcc_cv_gld_major_version" -gt 2 \ 6545 && test $in_tree_ld_is_elf = yes; then 6546 gcc_cv_ld_sol2_emulation=yes 6547 fi 6548 elif test x$gcc_cv_ld != x; then 6549 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \ 6550 grep _sol2 > /dev/null; then 6551 gcc_cv_ld_sol2_emulation=yes 6552 fi 6553 fi]) 6554if test x"$gcc_cv_ld_sol2_emulation" = xyes; then 6555 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1, 6556 [Define if your linker supports the *_sol2 emulations.]) 6557fi 6558 6559AC_CACHE_CHECK(linker --sysroot support, 6560 gcc_cv_ld_sysroot, 6561 [gcc_cv_ld_sysroot=no 6562 if test $in_tree_ld = yes ; then 6563 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then 6564 gcc_cv_ld_sysroot=yes 6565 fi 6566 elif test x$gcc_cv_ld != x; then 6567 if $gcc_cv_ld --help 2>&1 | grep sysroot > /dev/null; then 6568 gcc_cv_ld_sysroot=yes 6569 fi 6570 fi]) 6571if test x"$gcc_cv_ld_sysroot" = xyes; then 6572 AC_DEFINE(HAVE_LD_SYSROOT, 1, 6573 [Define if your linker supports --sysroot.]) 6574fi 6575 6576case $target in 6577*-*-solaris2*) 6578 # Check for system-provided CRTs on Solaris 11.x and Solaris 12. 6579 AC_CACHE_CHECK([system-provided CRTs on Solaris], 6580 gcc_cv_solaris_crts, 6581 [gcc_cv_solaris_crts=no 6582 if test x$host != x$target; then 6583 if test "x$with_sysroot" = xyes; then 6584 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root" 6585 else 6586 target_sysroot="${with_sysroot}" 6587 fi 6588 fi 6589 target_libdir="$target_sysroot/usr/lib" 6590 # At the time they were added, gcrt1.o became a symlink for backwards 6591 # compatibility on x86, while crt1.o was added on sparc, so check for that. 6592 case $target in 6593 i?86-*-solaris2* | x86_64-*-solaris2*) 6594 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi 6595 ;; 6596 sparc*-*-solaris2*) 6597 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi 6598 ;; 6599 esac]) 6600 ;; 6601esac 6602if test x$gcc_cv_solaris_crts = xyes; then 6603 AC_DEFINE(HAVE_SOLARIS_CRTS, 1, 6604 [Define if the system-provided CRTs are present on Solaris.]) 6605fi 6606 6607AC_ARG_ENABLE(libssp, 6608[AS_HELP_STRING([--enable-libssp], [enable linking against libssp])], 6609[case "${enableval}" in 6610 yes|no) 6611 ;; 6612 *) 6613 AC_MSG_ERROR([unknown libssp setting $enableval]) 6614 ;; 6615esac], []) 6616 6617# Test for stack protector support in target C library. 6618AC_CACHE_CHECK(__stack_chk_fail in target C library, 6619 gcc_cv_libc_provides_ssp, 6620 [gcc_cv_libc_provides_ssp=no 6621 if test "x$enable_libssp" = "xno"; then 6622 gcc_cv_libc_provides_ssp=yes 6623 elif test "x$enable_libssp" = "xyes"; then 6624 gcc_cv_libc_provides_ssp=no 6625 else 6626 case "$target" in 6627 *-*-musl*) 6628 # All versions of musl provide stack protector 6629 gcc_cv_libc_provides_ssp=yes;; 6630 *-*-linux* | *-*-kfreebsd*-gnu) 6631 # glibc 2.4 and later provides __stack_chk_fail and 6632 # either __stack_chk_guard, or TLS access to stack guard canary. 6633 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [ 6634 [if test -f $target_header_dir/features.h \ 6635 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \ 6636 $target_header_dir/features.h > /dev/null; then 6637 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \ 6638 $target_header_dir/features.h > /dev/null && \ 6639 test -f $target_header_dir/bits/uClibc_config.h && \ 6640 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \ 6641 $target_header_dir/bits/uClibc_config.h > /dev/null; then 6642 gcc_cv_libc_provides_ssp=yes 6643 fi 6644 # all versions of Bionic support stack protector 6645 elif test -f $target_header_dir/sys/cdefs.h \ 6646 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \ 6647 $target_header_dir/sys/cdefs.h > /dev/null; then 6648 gcc_cv_libc_provides_ssp=yes 6649 fi]]) 6650 ;; 6651 *-*-gnu*) 6652 # Avoid complicated tests (see 6653 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now 6654 # simply assert that glibc does provide this, which is true for all 6655 # realistically usable GNU/Hurd configurations. 6656 # All supported versions of musl provide it as well 6657 gcc_cv_libc_provides_ssp=yes;; 6658 *-*-darwin* | *-*-freebsd* | *-*-netbsd*) 6659 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes], 6660 [echo "no __stack_chk_fail on this target"]) 6661 ;; 6662 *) gcc_cv_libc_provides_ssp=no ;; 6663 esac 6664 fi]) 6665 6666if test x$gcc_cv_libc_provides_ssp = xyes; then 6667 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1, 6668 [Define if your target C library provides stack protector support]) 6669fi 6670 6671# Check whether --enable-default-ssp was given. 6672AC_ARG_ENABLE(default-ssp, 6673[AS_HELP_STRING([--enable-default-ssp], 6674 [enable Stack Smashing Protection as default])],[ 6675if test x$gcc_cv_libc_provides_ssp = xyes; then 6676 case "$target" in 6677 ia64*-*-*) enable_default_ssp=no ;; 6678 *) enable_default_ssp=$enableval ;; 6679 esac 6680else 6681 enable_default_ssp=no 6682fi], 6683enable_default_ssp=no) 6684if test x$enable_default_ssp = xyes ; then 6685 AC_DEFINE(ENABLE_DEFAULT_SSP, 1, 6686 [Define if your target supports default stack protector and it is enabled.]) 6687fi 6688AC_SUBST([enable_default_ssp]) 6689 6690# Test for <sys/sdt.h> on the target. 6691GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H]) 6692AC_MSG_CHECKING(sys/sdt.h in the target C library) 6693have_sys_sdt_h=no 6694if test -f $target_header_dir/sys/sdt.h; then 6695 have_sys_sdt_h=yes 6696 AC_DEFINE(HAVE_SYS_SDT_H, 1, 6697 [Define if your target C library provides sys/sdt.h]) 6698fi 6699AC_MSG_RESULT($have_sys_sdt_h) 6700 6701# Check if TFmode long double should be used by default or not. 6702# Some glibc targets used DFmode long double, but with glibc 2.4 6703# and later they can use TFmode. 6704case "$target" in 6705 powerpc*-*-linux* | \ 6706 sparc*-*-linux* | \ 6707 s390*-*-linux* | \ 6708 alpha*-*-linux*) 6709 AC_ARG_WITH(long-double-128, 6710 [AS_HELP_STRING([--with-long-double-128], 6711 [use 128-bit long double by default])], 6712 gcc_cv_target_ldbl128="$with_long_double_128", [ 6713 case "$target" in 6714 s390*-*-linux-musl*) 6715 gcc_cv_target_ldbl128=yes 6716 ;; 6717 powerpc*-*-linux-musl*) 6718 gcc_cv_target_ldbl128=no 6719 ;; 6720 *)] 6721 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [ 6722 [gcc_cv_target_ldbl128=no 6723 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \ 6724 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \ 6725 && gcc_cv_target_ldbl128=yes 6726 ]])] 6727 [ 6728 ;; 6729 esac 6730 ]) 6731 ;; 6732esac 6733if test x$gcc_cv_target_ldbl128 = xyes; then 6734 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1, 6735 [Define if TFmode long double should be the default]) 6736fi 6737 6738# Check if TFmode long double target should use the IBM extended double or IEEE 6739# 128-bit floating point formats if long doubles are 128-bits long. The long 6740# double type can only be switched on powerpc64 bit Linux systems where VSX is 6741# supported. Other PowerPC systems do not build the IEEE 128-bit emulator in 6742# libgcc. 6743AC_ARG_WITH([long-double-format], 6744 [AS_HELP_STRING([--with-long-double-format={ieee,ibm}] 6745 [Specify whether PowerPC long double uses IEEE or IBM format])],[ 6746case "$target:$with_long_double_format" in 6747 powerpc64le-*-linux*:ieee | powerpc64le-*-linux*:ibm) 6748 : 6749 ;; 6750 powerpc64-*-linux*:ieee | powerpc64-*-linux*:ibm) 6751 # IEEE 128-bit emulation is only built on 64-bit VSX Linux systems 6752 case "$with_cpu" in 6753 power7 | power8 | power9 | power1*) 6754 : 6755 ;; 6756 *) 6757 AC_MSG_ERROR([Configuration option --with-long-double-format is only \ 6758supported if the default cpu is power7 or newer]) 6759 with_long_double_format="" 6760 ;; 6761 esac 6762 ;; 6763 powerpc64*-*-linux*:*) 6764 AC_MSG_ERROR([--with-long-double-format argument should be ibm or ieee]) 6765 with_long_double_format="" 6766 ;; 6767 *) 6768 AC_MSG_ERROR([Configure option --with-long-double-format is only supported \ 6769on 64-bit PowerPC VSX Linux systems]) 6770 with_long_double_format="" 6771 ;; 6772esac], 6773 []) 6774 6775# Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP 6776# values in the TCB. Currently, only GLIBC 2.23 and later support this. 6777gcc_cv_libc_provides_hwcap_in_tcb=no 6778case "$target" in 6779 powerpc*-*-linux*) 6780 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], ) 6781 ;; 6782esac 6783if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then 6784 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1, 6785 [Define if your target C Library provides the AT_HWCAP value in the TCB]) 6786fi 6787 6788# Check if the target LIBC handles PT_GNU_STACK. 6789gcc_cv_libc_gnustack=unknown 6790case "$target" in 6791 mips*-*-linux*) 6792 GCC_GLIBC_VERSION_GTE_IFELSE([2], [31], [gcc_cv_libc_gnustack=yes], ) 6793 ;; 6794esac 6795if test x$gcc_cv_libc_gnustack = xyes; then 6796 AC_DEFINE(TARGET_LIBC_GNUSTACK, 1, 6797 [Define if your target C Library properly handles PT_GNU_STACK]) 6798fi 6799 6800AC_MSG_CHECKING(dl_iterate_phdr in target C library) 6801gcc_cv_target_dl_iterate_phdr=unknown 6802case "$target" in 6803 *-*-solaris2*) 6804 # <link.h> needs both a dl_iterate_phdr declaration and support for 6805 # compilation with largefile support. 6806 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \ 6807 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then 6808 gcc_cv_target_dl_iterate_phdr=yes 6809 else 6810 gcc_cv_target_dl_iterate_phdr=no 6811 fi 6812 ;; 6813 *-*-dragonfly* | *-*-freebsd*) 6814 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then 6815 gcc_cv_target_dl_iterate_phdr=yes 6816 else 6817 gcc_cv_target_dl_iterate_phdr=no 6818 fi 6819 ;; 6820 *-linux-musl*) 6821 gcc_cv_target_dl_iterate_phdr=yes 6822 ;; 6823esac 6824GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR]) 6825if test x$gcc_cv_target_dl_iterate_phdr = xyes; then 6826 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1, 6827[Define if your target C library provides the `dl_iterate_phdr' function.]) 6828fi 6829AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr) 6830 6831# We no longer support different GC mechanisms. Emit an error if 6832# the user configures with --with-gc. 6833AC_ARG_WITH(gc, 6834[AS_HELP_STRING([--with-gc={page,zone}], 6835 [this option is not supported anymore. It used to choose 6836 the garbage collection mechanism to use with the compiler])], 6837[AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])], 6838[]) 6839 6840# Libraries to use on the host. This will normally be set by the top 6841# level Makefile. Here we simply capture the value for our Makefile. 6842if test -z "${HOST_LIBS+set}"; then 6843 HOST_LIBS= 6844fi 6845AC_SUBST(HOST_LIBS) 6846 6847# Use the system's zlib library. 6848AM_ZLIB 6849 6850dnl Very limited version of automake's enable-maintainer-mode 6851 6852AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles]) 6853 dnl maintainer-mode is disabled by default 6854 AC_ARG_ENABLE(maintainer-mode, 6855[AS_HELP_STRING([--enable-maintainer-mode], 6856 [enable make rules and dependencies not useful 6857 (and sometimes confusing) to the casual installer])], 6858 maintainer_mode=$enableval, 6859 maintainer_mode=no) 6860 6861AC_MSG_RESULT($maintainer_mode) 6862 6863if test "$maintainer_mode" = "yes"; then 6864 MAINT='' 6865else 6866 MAINT='#' 6867fi 6868AC_SUBST(MAINT)dnl 6869 6870dnl Whether to prevent multiple front-ends from linking at the same time 6871 6872AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once]) 6873 AC_ARG_ENABLE(link-mutex, 6874[AS_HELP_STRING([--enable-link-mutex], 6875 [avoid linking multiple front-ends at once to avoid thrashing 6876 on the build machine])], 6877 do_link_mutex=$enableval, 6878 do_link_mutex=no) 6879AC_MSG_RESULT($do_link_mutex) 6880 6881if test "$do_link_mutex" = "yes"; then 6882 DO_LINK_MUTEX=true 6883else 6884 DO_LINK_MUTEX=false 6885fi 6886AC_SUBST(DO_LINK_MUTEX) 6887 6888dnl Whether to prevent multiple GCC front-ends from linking at the same time 6889 6890AC_MSG_CHECKING([whether to serialize linking of multiple front-ends]) 6891 AC_ARG_ENABLE(link-serialization, 6892[AS_HELP_STRING([--enable-link-serialization], 6893 [avoid linking multiple GCC front-ends at once using make 6894 dependencies to avoid thrashing on the build machine])], 6895 do_link_serialization=$enableval, 6896 do_link_serialization=no) 6897AC_MSG_RESULT($do_link_serialization) 6898 6899case "$do_link_serialization" in 6900 yes) 6901 DO_LINK_SERIALIZATION=1;; 6902 [[1-9]] | [[1-9]][[0-9]] | [[1-9]][[0-9]][[0-9]]) 6903 DO_LINK_SERIALIZATION=$do_link_serialization;; 6904 no) 6905 DO_LINK_SERIALIZATION=;; 6906 *) 6907 AC_MSG_ERROR(bad value ${do_link_serialization} given for --enable-link-serialization) ;; 6908esac 6909AC_SUBST(DO_LINK_SERIALIZATION) 6910 6911# -------------- 6912# Language hooks 6913# -------------- 6914 6915# Make empty files to contain the specs and options for each language. 6916# Then add #include lines to for a compiler that has specs and/or options. 6917 6918subdirs= 6919lang_opt_files= 6920lang_specs_files= 6921lang_tree_files= 6922# These (without "all_") are set in each config-lang.in. 6923# `language' must be a single word so is spelled singularly. 6924all_languages= 6925all_compilers= 6926all_outputs='Makefile' 6927# List of language configure and makefile fragments. 6928all_lang_configurefrags= 6929all_lang_makefrags= 6930# Additional files for gengtype 6931all_gtfiles="$target_gtfiles" 6932 6933# These are the languages that are set in --enable-languages, 6934# and are available in the GCC tree. 6935all_selected_languages= 6936 6937# Add the language fragments. 6938# Languages are added via two mechanisms. Some information must be 6939# recorded in makefile variables, these are defined in config-lang.in. 6940# We accumulate them and plug them into the main Makefile. 6941# The other mechanism is a set of hooks for each of the main targets 6942# like `clean', `install', etc. 6943 6944language_hooks="Make-hooks" 6945 6946for lang in ${srcdir}/*/config-lang.in 6947do 6948changequote(,)dnl 6949 test "$lang" = "${srcdir}/*/config-lang.in" && continue 6950 6951 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang` 6952 if test "x$lang_alias" = x 6953 then 6954 echo "$lang doesn't set \$language." 1>&2 6955 exit 1 6956 fi 6957 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`" 6958 subdirs="$subdirs $subdir" 6959 6960 # $gcc_subdir is where the gcc integration files are to be found 6961 # for a language, both for internal compiler purposes (compiler 6962 # sources implementing front-end to GCC tree converters), and for 6963 # build infrastructure purposes (Make-lang.in, etc.) 6964 # 6965 # This will be <subdir> (relative to $srcdir) if a line like 6966 # gcc_subdir="<subdir>" or gcc_subdir=<subdir> 6967 # is found in <langdir>/config-lang.in, and will remain <langdir> 6968 # otherwise. 6969 # 6970 # Except for the language alias (fetched above), the regular 6971 # "config-lang.in" contents are always retrieved from $gcc_subdir, 6972 # so a <langdir>/config-lang.in setting gcc_subdir typically sets 6973 # only this and the language alias. 6974 6975 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang` 6976 if [ "$gcc_subdir" = "" ]; then 6977 gcc_subdir="$subdir" 6978 fi 6979 6980 case ",$enable_languages," in 6981 *,$lang_alias,*) 6982 all_selected_languages="$all_selected_languages $lang_alias" 6983 if test -f $srcdir/$gcc_subdir/lang-specs.h; then 6984 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h" 6985 fi 6986 ;; 6987 esac 6988changequote([,])dnl 6989 6990 language= 6991 boot_language= 6992 compilers= 6993 outputs= 6994 gtfiles= 6995 subdir_requires= 6996 . ${srcdir}/$gcc_subdir/config-lang.in 6997 if test "x$language" = x 6998 then 6999 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2 7000 exit 1 7001 fi 7002 7003 ok=: 7004 case ",$enable_languages," in 7005 *,$lang_alias,*) ;; 7006 *) 7007 for i in $subdir_requires; do 7008 test -f "${srcdir}/$i/config-lang.in" && continue 7009 ok=false 7010 break 7011 done 7012 ;; 7013 esac 7014 $ok || continue 7015 7016 all_lang_configurefrags="$all_lang_configurefrags \$(srcdir)/$gcc_subdir/config-lang.in" 7017 if test "x$language" = xc && test -n "$all_lang_makefrags"; then 7018 # Put c/Make-lang.in fragment first to match serialization languages order. 7019 all_lang_makefrags="\$(srcdir)/$gcc_subdir/Make-lang.in $all_lang_makefrags" 7020 else 7021 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in" 7022 fi 7023 if test -f $srcdir/$gcc_subdir/lang.opt; then 7024 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt" 7025 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt" 7026 fi 7027 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then 7028 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def" 7029 fi 7030 all_languages="$all_languages $language" 7031 all_compilers="$all_compilers $compilers" 7032 all_outputs="$all_outputs $outputs" 7033 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles" 7034 case ",$enable_languages," in 7035 *,lto,*) 7036 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.]) 7037 enable_lto=yes 7038 AC_SUBST(enable_lto) 7039 ;; 7040 *) ;; 7041 esac 7042done 7043 7044check_languages= 7045for language in $all_selected_languages 7046do 7047 check_languages="$check_languages check-$language" 7048done 7049 7050selftest_languages= 7051for language in $all_selected_languages 7052do 7053 selftest_languages="$selftest_languages selftest-$language" 7054done 7055 7056# We link each language in with a set of hooks, reached indirectly via 7057# lang.${target}. Only do so for selected languages. 7058 7059rm -f Make-hooks 7060touch Make-hooks 7061target_list="all.cross start.encap rest.encap tags \ 7062 install-common install-man install-info install-pdf install-html dvi \ 7063 pdf html uninstall info man srcextra srcman srcinfo \ 7064 mostlyclean clean distclean maintainer-clean install-plugin" 7065 7066for t in $target_list 7067do 7068 x= 7069 for lang in $all_selected_languages 7070 do 7071 x="$x $lang.$t" 7072 done 7073 echo "lang.$t: $x" >> Make-hooks 7074done 7075 7076echo "ifeq (\$(DO_LINK_SERIALIZATION),)" >> Make-hooks 7077echo "SERIAL_LIST =" >> Make-hooks 7078echo else >> Make-hooks 7079lang_cnt=0 7080lang_list= 7081prev=c 7082serialization_languages=c 7083for lang in $all_selected_languages 7084do 7085 test $lang = c && continue 7086 if test $lang = lto; then 7087 serialization_languages="$serialization_languages lto1 lto2" 7088 else 7089 serialization_languages="$serialization_languages $lang" 7090 fi 7091done 7092for lang in $serialization_languages 7093do 7094 test $lang = c && continue 7095 lang_cnt=`expr $lang_cnt + 1` 7096 lang_list=" $prev$lang_list" 7097 prev=${lang} 7098done 7099echo "SERIAL_LIST = \$(wordlist \$(DO_LINK_SERIALIZATION),$lang_cnt,$lang_list)" >> Make-hooks 7100echo endif >> Make-hooks 7101echo "SERIAL_COUNT = `expr $lang_cnt + 1`" >> Make-hooks 7102echo "INDEX.c = 0" >> Make-hooks 7103lang_idx=1 7104for lang in $serialization_languages 7105do 7106 test $lang = c && continue 7107 echo "$lang.prev = \$(if \$(word $lang_cnt,\$(SERIAL_LIST)),\$(\$(word $lang_cnt,\$(SERIAL_LIST)).serial))" >> Make-hooks 7108 echo "INDEX.$lang = $lang_idx" >> Make-hooks 7109 lang_cnt=`expr $lang_cnt - 1` 7110 lang_idx=`expr $lang_idx + 1` 7111done 7112 7113# -------- 7114# Option include files 7115# -------- 7116 7117${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk 7118option_includes="option-includes.mk" 7119AC_SUBST_FILE(option_includes) 7120 7121# -------- 7122# UNSORTED 7123# -------- 7124 7125# Create .gdbinit. 7126 7127echo "dir ." > .gdbinit 7128echo "dir ${srcdir}" >> .gdbinit 7129if test x$gdb_needs_out_file_path = xyes 7130then 7131 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit 7132fi 7133if test "x$subdirs" != x; then 7134 for s in $subdirs 7135 do 7136 echo "dir ${srcdir}/$s" >> .gdbinit 7137 done 7138fi 7139echo "source ${srcdir}/gdbinit.in" >> .gdbinit 7140echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit 7141 7142# Put a breakpoint on __asan_report_error to help with debugging buffer 7143# overflow. 7144case "$CFLAGS" in 7145*-fsanitize=address*) 7146 echo "source ${srcdir}/gdbasan.in" >> .gdbinit 7147 ;; 7148esac 7149 7150gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)' 7151AC_SUBST(gcc_tooldir) 7152AC_SUBST(dollar) 7153 7154# Find a directory in which to install a shared libgcc. 7155 7156AC_ARG_ENABLE(version-specific-runtime-libs, 7157[AS_HELP_STRING([--enable-version-specific-runtime-libs], 7158 [specify that runtime libraries should be 7159 installed in a compiler-specific directory])]) 7160 7161# Substitute configuration variables 7162AC_SUBST(subdirs) 7163AC_SUBST(srcdir) 7164AC_SUBST(all_compilers) 7165AC_SUBST(all_gtfiles) 7166AC_SUBST(all_lang_configurefrags) 7167AC_SUBST(all_lang_makefrags) 7168AC_SUBST(all_languages) 7169AC_SUBST(all_selected_languages) 7170AC_SUBST(build_exeext) 7171AC_SUBST(build_install_headers_dir) 7172AC_SUBST(build_xm_file_list) 7173AC_SUBST(build_xm_include_list) 7174AC_SUBST(build_xm_defines) 7175AC_SUBST(build_file_translate) 7176AC_SUBST(check_languages) 7177AC_SUBST(selftest_languages) 7178AC_SUBST(cpp_install_dir) 7179AC_SUBST(xmake_file) 7180AC_SUBST(tmake_file) 7181AC_SUBST(TM_ENDIAN_CONFIG) 7182AC_SUBST(TM_MULTILIB_CONFIG) 7183AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG) 7184AC_SUBST(extra_gcc_objs) 7185AC_SUBST(user_headers_inc_next_pre) 7186AC_SUBST(user_headers_inc_next_post) 7187AC_SUBST(extra_headers_list) 7188AC_SUBST(extra_objs) 7189AC_SUBST(extra_programs) 7190AC_SUBST(float_h_file) 7191AC_SUBST(gcc_config_arguments) 7192AC_SUBST(gcc_gxx_include_dir) 7193AC_SUBST(gcc_gxx_include_dir_add_sysroot) 7194AC_SUBST(gcc_gxx_libcxx_include_dir) 7195AC_SUBST(gcc_gxx_libcxx_include_dir_add_sysroot) 7196AC_SUBST(host_exeext) 7197AC_SUBST(host_xm_file_list) 7198AC_SUBST(host_xm_include_list) 7199AC_SUBST(host_xm_defines) 7200AC_SUBST(out_host_hook_obj) 7201AC_SUBST(install) 7202AC_SUBST(lang_opt_files) 7203AC_SUBST(lang_specs_files) 7204AC_SUBST(lang_tree_files) 7205AC_SUBST(local_prefix) 7206AC_SUBST(md_file) 7207AC_SUBST(objc_boehm_gc) 7208AC_SUBST(out_file) 7209AC_SUBST(out_object_file) 7210AC_SUBST(common_out_file) 7211AC_SUBST(common_out_object_file) 7212AC_SUBST(tm_file_list) 7213AC_SUBST(tm_include_list) 7214AC_SUBST(tm_defines) 7215AC_SUBST(tm_p_file_list) 7216AC_SUBST(tm_p_include_list) 7217AC_SUBST(tm_d_file_list) 7218AC_SUBST(tm_d_include_list) 7219AC_SUBST(xm_file_list) 7220AC_SUBST(xm_include_list) 7221AC_SUBST(xm_defines) 7222AC_SUBST(use_gcc_stdint) 7223AC_SUBST(c_target_objs) 7224AC_SUBST(cxx_target_objs) 7225AC_SUBST(fortran_target_objs) 7226AC_SUBST(d_target_objs) 7227AC_SUBST(target_cpu_default) 7228 7229AC_SUBST_FILE(language_hooks) 7230 7231# Echo link setup. 7232if test x${build} = x${host} ; then 7233 if test x${host} = x${target} ; then 7234 echo "Links are now set up to build a native compiler for ${target}." 1>&2 7235 else 7236 echo "Links are now set up to build a cross-compiler" 1>&2 7237 echo " from ${host} to ${target}." 1>&2 7238 fi 7239else 7240 if test x${host} = x${target} ; then 7241 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2 7242 echo " for ${target}." 1>&2 7243 else 7244 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2 7245 echo " from ${host} to ${target}." 1>&2 7246 fi 7247fi 7248 7249AC_ARG_VAR(GMPLIBS,[How to link GMP]) 7250AC_ARG_VAR(GMPINC,[How to find GMP include files]) 7251 7252AC_ARG_VAR(ISLLIBS,[How to link isl]) 7253AC_ARG_VAR(ISLINC,[How to find isl include files]) 7254if test "x${ISLLIBS}" != "x" ; then 7255 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.]) 7256fi 7257 7258GCC_ENABLE_PLUGINS 7259AC_SUBST(pluginlibs) 7260AC_SUBST(enable_plugin) 7261if test x"$enable_plugin" = x"yes"; then 7262 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.]) 7263fi 7264 7265 7266# Enable --enable-host-shared 7267AC_ARG_ENABLE(host-shared, 7268[AS_HELP_STRING([--enable-host-shared], 7269 [build host code as shared libraries])], 7270[PICFLAG=-fPIC], [PICFLAG=]) 7271AC_SUBST(enable_host_shared) 7272AC_SUBST(PICFLAG) 7273 7274 7275AC_ARG_ENABLE(libquadmath-support, 7276[AS_HELP_STRING([--disable-libquadmath-support], 7277 [disable libquadmath support for Fortran])], 7278ENABLE_LIBQUADMATH_SUPPORT=$enableval, 7279ENABLE_LIBQUADMATH_SUPPORT=yes) 7280if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then 7281 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1, 7282 [Define to 1 to enable libquadmath support]) 7283fi 7284 7285 7286# Specify what hash style to use by default. 7287AC_ARG_WITH([linker-hash-style], 7288[AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}], 7289 [specify the linker hash style])], 7290[case x"$withval" in 7291 xsysv) 7292 LINKER_HASH_STYLE=sysv 7293 ;; 7294 xgnu) 7295 LINKER_HASH_STYLE=gnu 7296 ;; 7297 xboth) 7298 LINKER_HASH_STYLE=both 7299 ;; 7300 *) 7301 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style]) 7302 ;; 7303 esac], 7304[LINKER_HASH_STYLE='']) 7305if test x"${LINKER_HASH_STYLE}" != x; then 7306 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE", 7307 [The linker hash style]) 7308fi 7309 7310# Specify what should be the default of -fdiagnostics-color option. 7311AC_ARG_WITH([diagnostics-color], 7312[AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}], 7313 [specify the default of -fdiagnostics-color option 7314 auto-if-env stands for -fdiagnostics-color=auto if 7315 GCC_COLOR environment variable is present and 7316 -fdiagnostics-color=never otherwise])], 7317[case x"$withval" in 7318 xnever) 7319 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO 7320 ;; 7321 xauto) 7322 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO 7323 ;; 7324 xauto-if-env) 7325 DIAGNOSTICS_COLOR_DEFAULT=-1 7326 ;; 7327 xalways) 7328 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES 7329 ;; 7330 *) 7331 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color]) 7332 ;; 7333 esac], 7334[DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO]) 7335AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT, 7336 [The default for -fdiagnostics-color option]) 7337 7338# Specify what should be the default of -fdiagnostics-urls option. 7339AC_ARG_WITH([diagnostics-urls], 7340[AC_HELP_STRING([--with-diagnostics-urls={never,auto,auto-if-env,always}], 7341 [specify the default of -fdiagnostics-urls option 7342 auto-if-env stands for -fdiagnostics-urls=auto if 7343 GCC_URLS or TERM_URLS environment variable is present and 7344 -fdiagnostics-urls=never otherwise])], 7345[case x"$withval" in 7346 xnever) 7347 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_NO 7348 ;; 7349 xauto) 7350 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_AUTO 7351 ;; 7352 xauto-if-env) 7353 DIAGNOSTICS_URLS_DEFAULT=-1 7354 ;; 7355 xalways) 7356 DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_YES 7357 ;; 7358 *) 7359 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-urls]) 7360 ;; 7361 esac], 7362[DIAGNOSTICS_URLS_DEFAULT=DIAGNOSTICS_URL_AUTO]) 7363AC_DEFINE_UNQUOTED(DIAGNOSTICS_URLS_DEFAULT, $DIAGNOSTICS_URLS_DEFAULT, 7364 [The default for -fdiagnostics-urls option]) 7365 7366# Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit 7367# of jit/jit-playback.c. 7368gcc_driver_version=`eval "${get_gcc_base_ver} $srcdir/BASE-VER"` 7369echo "gcc_driver_version: ${gcc_driver_version}" 7370cat > gcc-driver-name.h <<EOF 7371#define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_driver_version}${exeext}" 7372EOF 7373 7374# Check whether --enable-default-pie was given. 7375AC_ARG_ENABLE(default-pie, 7376[AS_HELP_STRING([--enable-default-pie], 7377 [enable Position Independent Executable as default])], 7378enable_default_pie=$enableval, 7379enable_default_pie=no) 7380if test x$enable_default_pie = xyes ; then 7381 AC_DEFINE(ENABLE_DEFAULT_PIE, 1, 7382 [Define if your target supports default PIE and it is enabled.]) 7383fi 7384AC_SUBST([enable_default_pie]) 7385 7386# Check if -fno-PIE works. 7387AC_CACHE_CHECK([for -fno-PIE option], 7388 [gcc_cv_c_no_fpie], 7389 [saved_CXXFLAGS="$CXXFLAGS" 7390 CXXFLAGS="$CXXFLAGS -fno-PIE" 7391 AC_COMPILE_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])], 7392 [gcc_cv_c_no_fpie=yes], 7393 [gcc_cv_c_no_fpie=no]) 7394 CXXFLAGS="$saved_CXXFLAGS"]) 7395if test "$gcc_cv_c_no_fpie" = "yes"; then 7396 NO_PIE_CFLAGS="-fno-PIE" 7397fi 7398AC_SUBST([NO_PIE_CFLAGS]) 7399 7400# Check if -no-pie works. 7401AC_CACHE_CHECK([for -no-pie option], 7402 [gcc_cv_no_pie], 7403 [saved_LDFLAGS="$LDFLAGS" 7404 LDFLAGS="$LDFLAGS -no-pie" 7405 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])], 7406 [gcc_cv_no_pie=yes], 7407 [gcc_cv_no_pie=no]) 7408 LDFLAGS="$saved_LDFLAGS"]) 7409if test "$gcc_cv_no_pie" = "yes"; then 7410 NO_PIE_FLAG="-no-pie" 7411fi 7412AC_SUBST([NO_PIE_FLAG]) 7413 7414# Enable Intel CET on Intel CET enabled host if jit is enabled. 7415GCC_CET_HOST_FLAGS(CET_HOST_FLAGS) 7416case x$enable_languages in 7417*jit*) 7418 ;; 7419*) 7420 CET_HOST_FLAGS= 7421 ;; 7422esac 7423AC_SUBST(CET_HOST_FLAGS) 7424 7425# Check linker supports '-z bndplt' 7426ld_bndplt_support=no 7427AC_MSG_CHECKING(linker -z bndplt option) 7428if test x"$ld_is_gold" = xno; then 7429 if test $in_tree_ld = yes ; then 7430 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then 7431 ld_bndplt_support=yes 7432 fi 7433 elif test x$gcc_cv_ld != x; then 7434 # Check if linker supports -a bndplt option 7435 if $gcc_cv_ld --help 2>&1 | grep -- '-z bndplt' > /dev/null; then 7436 ld_bndplt_support=yes 7437 fi 7438 fi 7439fi 7440if test x"$ld_bndplt_support" = xyes; then 7441 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1, 7442 [Define if your linker supports -z bndplt]) 7443fi 7444AC_MSG_RESULT($ld_bndplt_support) 7445 7446# Check linker supports '--push-state'/'--pop-state' 7447ld_pushpopstate_support=no 7448AC_MSG_CHECKING(linker --push-state/--pop-state options) 7449if test x"$ld_is_gold" = xno; then 7450 if test $in_tree_ld = yes ; then 7451 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then 7452 ld_pushpopstate_support=yes 7453 fi 7454 elif test x$gcc_cv_ld != x; then 7455 # Check if linker supports --push-state/--pop-state options 7456 if $gcc_cv_ld --help 2>&1 | grep -- '--push-state' > /dev/null; then 7457 ld_pushpopstate_support=yes 7458 fi 7459 fi 7460fi 7461if test x"$ld_pushpopstate_support" = xyes; then 7462 AC_DEFINE(HAVE_LD_PUSHPOPSTATE_SUPPORT, 1, 7463 [Define if your linker supports --push-state/--pop-state]) 7464fi 7465AC_MSG_RESULT($ld_pushpopstate_support) 7466 7467# On s390, float_t has historically been statically defined as double for no 7468# good reason. To comply with the C standard in the light of this definition, 7469# gcc has evaluated float expressions in double precision when in 7470# standards-compatible mode or when given -fexcess-precision=standard. To enable 7471# a smooth transition towards the new model used by most architectures, where 7472# gcc describes its behavior via the macro __FLT_EVAL_METHOD__ and glibc derives 7473# float_t from that, this behavior can be configured with 7474# --enable-s390-excess-float-precision. When given as enabled, that flag selects 7475# the old model. When omitted, native builds and cross compiles that have target 7476# libc headers will detect whether libc clamps float_t to double and in that 7477# case maintain the old model. Otherwise, they will default to the new model. 7478AC_ARG_ENABLE(s390-excess-float-precision, 7479 [AS_HELP_STRING([--enable-s390-excess-float-precision], 7480 [on s390 targets, evaluate float with double precision 7481 when in standards-conforming mode])], 7482 [],[enable_s390_excess_float_precision=auto]) 7483 7484case $target in 7485 s390*-linux*) 7486 if test x"$enable_s390_excess_float_precision" = xauto; then 7487 # Can we autodetect the behavior of the target libc? 7488 if test "$target" = "$host" -a "$host" = "$build"; then 7489 enable_s390_excess_float_precision=autodetect 7490 elif test "x$with_headers" != xno; then 7491 # cross build. are target headers available? 7492 # carefully coerce the build-system compiler to use target headers 7493 saved_CXXFLAGS="$CXXFLAGS" 7494 fixed_XGCC_FLAGS_FOR_TARGET=`echo "$XGCC_FLAGS_FOR_TARGET" | sed 's/-B/-idirafter/g'` 7495 CROSS_TEST_CXXFLAGS="-nostdinc $fixed_XGCC_FLAGS_FOR_TARGET" 7496 CXXFLAGS="$CROSS_TEST_CXXFLAGS" 7497 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ 7498#include <math.h> 7499]])], [enable_s390_excess_float_precision=autodetect], []) 7500 CXXFLAGS="$saved_CXXFLAGS" 7501 fi 7502 7503 if test x"$enable_s390_excess_float_precision" = xautodetect; then 7504 saved_CXXFLAGS="$CXXFLAGS" 7505 if ! test "$target" = "$host" -a "$host" = "$build"; then 7506 CXXFLAGS="$CROSS_TEST_CXXFLAGS" 7507 unset CROSS_TEST_CXXFLAGS 7508 fi 7509 AC_CACHE_CHECK([for glibc clamping float_t to double], 7510 gcc_cv_float_t_clamped_to_double, [ 7511 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ 7512#define __FLT_EVAL_METHOD__ 0 7513#include <math.h> 7514int dummy[sizeof(float_t) == sizeof(double) ? 1 : -1]; 7515]])], 7516 [gcc_cv_float_t_clamped_to_double=yes], 7517 [gcc_cv_float_t_clamped_to_double=no])]) 7518 CXXFLAGS="$saved_CXXFLAGS" 7519 enable_s390_excess_float_precision="$gcc_cv_float_t_clamped_to_double" 7520 else 7521 # no way to detect behavior of target libc, default to new model 7522 enable_s390_excess_float_precision=no 7523 fi 7524 fi 7525 7526 GCC_TARGET_TEMPLATE(ENABLE_S390_EXCESS_FLOAT_PRECISION) 7527 if test x"$enable_s390_excess_float_precision" = xyes; then 7528 AC_DEFINE(ENABLE_S390_EXCESS_FLOAT_PRECISION, 1, 7529[Define to enable evaluating float expressions with double precision in 7530standards-compatible mode on s390 targets.]) 7531 fi 7532 ;; 7533esac 7534 7535# Configure the subdirectories 7536# AC_CONFIG_SUBDIRS($subdirs) 7537 7538# Create the Makefile 7539# and configure language subdirectories 7540AC_CONFIG_FILES($all_outputs) 7541 7542AC_CONFIG_COMMANDS([default], 7543[ 7544case ${CONFIG_HEADERS} in 7545 *auto-host.h:config.in*) 7546 echo > cstamp-h ;; 7547esac 7548# Make sure all the subdirs exist. 7549for d in $subdirs doc build common c-family 7550do 7551 test -d $d || mkdir $d 7552done 7553], 7554[subdirs='$subdirs']) 7555AC_OUTPUT 7556 7557