1# configure.ac for GCC 2# Process this file with autoconf to generate a configuration script. 3 4# Copyright (C) 1997-2019 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 231AC_ARG_WITH(cpp_install_dir, 232[AC_HELP_STRING([--with-cpp-install-dir=DIR], 233 [install the user visible C preprocessor in DIR 234 (relative to PREFIX) as well as PREFIX/bin])], 235[if test x$withval = xyes; then 236 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument]) 237elif test x$withval != xno; then 238 cpp_install_dir=$withval 239fi]) 240 241# We would like to our source tree to be readonly. However when releases or 242# pre-releases are generated, the flex/bison generated files as well as the 243# various formats of manuals need to be included along with the rest of the 244# sources. Therefore we have --enable-generated-files-in-srcdir to do 245# just that. 246 247AC_MSG_CHECKING([whether to place generated files in the source directory]) 248 dnl generated-files-in-srcdir is disabled by default 249 AC_ARG_ENABLE(generated-files-in-srcdir, 250 [AS_HELP_STRING([--enable-generated-files-in-srcdir], 251 [put copies of generated files in source dir 252 intended for creating source tarballs for users 253 without texinfo bison or flex])], 254 generated_files_in_srcdir=$enableval, 255 generated_files_in_srcdir=no) 256 257AC_MSG_RESULT($generated_files_in_srcdir) 258 259if test "$generated_files_in_srcdir" = "yes"; then 260 GENINSRC='' 261else 262 GENINSRC='#' 263fi 264AC_SUBST(GENINSRC) 265 266# ------------------- 267# Find default linker 268# ------------------- 269 270# With GNU ld 271AC_ARG_WITH(gnu-ld, 272[AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])], 273gnu_ld_flag="$with_gnu_ld", 274gnu_ld_flag=no) 275 276case $target in 277 *darwin*) ld64_flag=yes;; # Darwin can only use a ld64-compatible linker. 278 *) ld64_flag=no;; 279esac 280 281# With pre-defined ld 282AC_ARG_WITH(ld, 283[AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])], 284DEFAULT_LINKER="$with_ld") 285if test x"${DEFAULT_LINKER+set}" = x"set"; then 286 if test ! -x "$DEFAULT_LINKER"; then 287 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER]) 288 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then 289 gnu_ld_flag=yes 290 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep ld64- > /dev/null; then 291 ld64_flag=yes 292 fi 293 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER", 294 [Define to enable the use of a default linker.]) 295fi 296 297AC_MSG_CHECKING([whether a default linker was specified]) 298if test x"${DEFAULT_LINKER+set}" = x"set"; then 299 if test x"$gnu_ld_flag" = x"no"; then 300 AC_MSG_RESULT([yes ($DEFAULT_LINKER)]) 301 else 302 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)]) 303 fi 304else 305 AC_MSG_RESULT(no) 306fi 307 308# With demangler in GNU ld 309AC_ARG_WITH(demangler-in-ld, 310[AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])], 311demangler_in_ld="$with_demangler_in_ld", 312demangler_in_ld=yes) 313 314# ---------------------- 315# Find default assembler 316# ---------------------- 317 318# With GNU as 319AC_ARG_WITH(gnu-as, 320[AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])], 321gas_flag="$with_gnu_as", 322gas_flag=no) 323 324AC_ARG_WITH(as, 325[AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])], 326DEFAULT_ASSEMBLER="$with_as") 327if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then 328 if test ! -x "$DEFAULT_ASSEMBLER"; then 329 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER]) 330 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then 331 gas_flag=yes 332 fi 333 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER", 334 [Define to enable the use of a default assembler.]) 335fi 336 337AC_MSG_CHECKING([whether a default assembler was specified]) 338if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then 339 if test x"$gas_flag" = x"no"; then 340 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)]) 341 else 342 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)]) 343 fi 344else 345 AC_MSG_RESULT(no) 346fi 347 348# --------------- 349# Find C compiler 350# --------------- 351 352# If a non-executable a.out is present (e.g. created by GNU as above even if 353# invoked with -v only), the IRIX 6 native ld just overwrites the existing 354# file, even when creating an executable, so an execution test fails. 355# Remove possible default executable files to avoid this. 356# 357# FIXME: This really belongs into AC_PROG_CC and can be removed once 358# Autoconf includes it. 359rm -f a.out a.exe b.out 360 361# Find the native compiler 362AC_PROG_CC 363AC_PROG_CXX 364ACX_PROG_GNAT([-I"$srcdir"/ada/libgnat]) 365 366# Do configure tests with the C++ compiler, since that's what we build with. 367AC_LANG(C++) 368 369# Remove the -O2: for historical reasons, unless bootstrapping we prefer 370# optimizations to be activated explicitly by the toplevel. 371case "$CC" in 372 */prev-gcc/xgcc*) ;; 373 *) CFLAGS=`echo "$CFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` 374 CXXFLAGS=`echo "$CXXFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` ;; 375esac 376AC_SUBST(CFLAGS) 377AC_SUBST(CXXFLAGS) 378 379# Determine PICFLAG for target gnatlib. 380GCC_PICFLAG_FOR_TARGET 381AC_SUBST(PICFLAG_FOR_TARGET) 382 383# ------------------------- 384# Check C compiler features 385# ------------------------- 386 387AC_USE_SYSTEM_EXTENSIONS 388AC_PROG_CPP 389AC_C_INLINE 390 391AC_SYS_LARGEFILE 392 393# sizeof(char) is 1 by definition. 394AC_CHECK_SIZEOF(void *) 395AC_CHECK_SIZEOF(short) 396AC_CHECK_SIZEOF(int) 397AC_CHECK_SIZEOF(long) 398AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)]) 399GCC_STDINT_TYPES 400if test x"$ac_cv_c_uint64_t" = x"no" -o x"$ac_cv_c_int64_t" = x"no"; then 401 AC_MSG_ERROR([uint64_t or int64_t not found]) 402fi 403 404# check what underlying integer type int64_t uses 405AC_CACHE_CHECK(for int64_t underlying type, ac_cv_int64_t_type, [ 406AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ 407#ifdef HAVE_STDINT_H 408#include <stdint.h> 409#endif 410template <typename T> struct X { }; 411template <> 412struct X<long> { typedef long t; }; 413]], [[X<int64_t>::t x;]])],[ac_cv_int64_t_type=long],[ac_cv_int64_t_type="long long"])]) 414if test "$ac_cv_int64_t_type" = "long"; then 415 AC_DEFINE(INT64_T_IS_LONG, 1, 416 [Define if int64_t uses long as underlying type.]) 417else 418AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ 419#ifdef HAVE_STDINT_H 420#include <stdint.h> 421#endif 422template <typename T> struct X { }; 423template <> 424struct X<long long> { typedef long long t; }; 425]], [[X<int64_t>::t x;]])],[],[AC_MSG_ERROR([error verifying int64_t uses long long])]) 426fi 427 428AC_CACHE_CHECK(for std::swap in <utility>, ac_cv_std_swap_in_utility, [ 429AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ 430#include <utility> 431]], [[int a, b; std::swap(a,b);]])],[ac_cv_std_swap_in_utility=yes],[ac_cv_std_swap_in_utility=no])]) 432if test $ac_cv_std_swap_in_utility = yes; then 433 AC_DEFINE(HAVE_SWAP_IN_UTILITY, 1, 434 [Define if <utility> defines std::swap.]) 435fi 436 437# Check whether compiler is affected by placement new aliasing bug (PR 29286). 438# If the host compiler is affected by the bug, and we build with optimization 439# enabled (which happens e.g. when cross-compiling), the pool allocator may 440# get miscompiled. Use -fno-strict-aliasing to work around this problem. 441# Since there is no reliable feature check for the presence of this bug, 442# we simply use a GCC version number check. (This should never trigger for 443# stages 2 or 3 of a native bootstrap.) 444aliasing_flags= 445if test "$GCC" = yes; then 446 saved_CXXFLAGS="$CXXFLAGS" 447 448 # The following test compilation will succeed if and only if $CXX accepts 449 # -fno-strict-aliasing *and* is older than GCC 4.3. 450 CXXFLAGS="$CXXFLAGS -fno-strict-aliasing" 451 AC_MSG_CHECKING([whether $CXX is affected by placement new aliasing bug]) 452 AC_COMPILE_IFELSE([AC_LANG_SOURCE([ 453#if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3) 454#error compiler not affected by placement new aliasing bug 455#endif 456])], 457 [AC_MSG_RESULT([yes]); aliasing_flags='-fno-strict-aliasing'], 458 [AC_MSG_RESULT([no])]) 459 460 CXXFLAGS="$saved_CXXFLAGS" 461fi 462AC_SUBST(aliasing_flags) 463 464 465 466# --------------------- 467# Warnings and checking 468# --------------------- 469 470# Check $CC warning features (if it's GCC). 471# We want to use -pedantic, but we don't want warnings about 472# * 'long long' 473# * variadic macros 474# * overlong strings 475# * C++11 narrowing conversions in { } 476# So, we only use -pedantic if we can disable those warnings. 477 478# In stage 1, disable -Wformat warnings from old GCCs about new % codes 479AC_ARG_ENABLE(build-format-warnings, 480 AS_HELP_STRING([--disable-build-format-warnings],[don't use -Wformat while building GCC]), 481 [],[enable_build_format_warnings=yes]) 482AS_IF([test $enable_build_format_warnings = no], 483 [wf_opt=-Wno-format],[wf_opt=]) 484ACX_PROG_CXX_WARNING_OPTS( 485 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings ], 486 [-Wcast-qual $wf_opt])), [loose_warn]) 487ACX_PROG_CC_WARNING_OPTS( 488 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])), 489 [c_loose_warn]) 490ACX_PROG_CXX_WARNING_OPTS( 491 m4_quote(m4_do([-Wmissing-format-attribute ], 492 [-Woverloaded-virtual])), [strict_warn]) 493ACX_PROG_CC_WARNING_OPTS( 494 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn]) 495ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC( 496 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ], 497 [-Wno-overlength-strings])), [strict_warn]) 498ACX_PROG_CXX_WARNINGS_ARE_ERRORS([manual], [strict_warn]) 499 500# The above macros do nothing if the compiler is not GCC. However, the 501# Makefile has more goo to add other flags, so these variables are used 502# to enable warnings only for GCC. 503warn_cflags= 504warn_cxxflags= 505if test "x$GCC" = "xyes"; then 506 warn_cflags='$(GCC_WARN_CFLAGS)' 507 warn_cxxflags='$(GCC_WARN_CXXFLAGS)' 508fi 509AC_SUBST(warn_cflags) 510AC_SUBST(warn_cxxflags) 511 512# Disable exceptions and RTTI if building with g++ 513ACX_PROG_CC_WARNING_OPTS( 514 m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])), 515 [noexception_flags]) 516 517# Enable expensive internal checks 518is_release= 519if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then 520 is_release=yes 521fi 522 523AC_ARG_ENABLE(checking, 524[AS_HELP_STRING([[--enable-checking[=LIST]]], 525 [enable expensive run-time checks. With LIST, 526 enable only specific categories of checks. 527 Categories are: yes,no,all,none,release. 528 Flags are: assert,df,extra,fold,gc,gcac,gimple,misc, 529 rtlflag,rtl,runtime,tree,valgrind,types])], 530[ac_checking_flags="${enableval}"],[ 531# Determine the default checks. 532if test x$is_release = x ; then 533 ac_checking_flags=yes,extra 534else 535 ac_checking_flags=release 536fi]) 537IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS," 538for check in release $ac_checking_flags 539do 540 case $check in 541 # these set all the flags to specific states 542 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ; 543 ac_fold_checking= ; ac_gc_checking=1 ; ac_extra_checking= ; 544 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ; 545 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ; 546 ac_tree_checking=1 ; ac_valgrind_checking= ; 547 ac_types_checking=1 ;; 548 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ; 549 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ; 550 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ; 551 ac_rtlflag_checking= ; ac_runtime_checking= ; 552 ac_tree_checking= ; ac_valgrind_checking= ; 553 ac_types_checking= ;; 554 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ; 555 ac_fold_checking=1 ; ac_gc_checking=1 ; ac_extra_checking=1 ; 556 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ; 557 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ; 558 ac_tree_checking=1 ; ac_valgrind_checking= ; 559 ac_types_checking=1 ;; 560 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ; 561 ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ; 562 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ; 563 ac_rtlflag_checking= ; ac_runtime_checking=1 ; 564 ac_tree_checking= ; ac_valgrind_checking= ; 565 ac_types_checking= ;; 566 # these enable particular checks 567 assert) ac_assert_checking=1 ;; 568 df) ac_df_checking=1 ;; 569 extra) ac_extra_checking=1 ;; 570 fold) ac_fold_checking=1 ;; 571 gc) ac_gc_checking=1 ;; 572 gcac) ac_gc_always_collect=1 ;; 573 gimple) ac_gimple_checking=1 ;; 574 misc) ac_checking=1 ;; 575 rtl) ac_rtl_checking=1 ;; 576 rtlflag) ac_rtlflag_checking=1 ;; 577 runtime) ac_runtime_checking=1 ;; 578 tree) ac_tree_checking=1 ;; 579 types) ac_types_checking=1 ;; 580 valgrind) ac_valgrind_checking=1 ;; 581 *) AC_MSG_ERROR(unknown check category $check) ;; 582 esac 583done 584IFS="$ac_save_IFS" 585 586nocommon_flag="" 587if test x$ac_checking != x ; then 588 AC_DEFINE(CHECKING_P, 1, 589[Define to 0/1 if you want more run-time sanity checks. This one gets a grab 590bag of miscellaneous but relatively cheap checks.]) 591 nocommon_flag=-fno-common 592else 593 AC_DEFINE(CHECKING_P, 0) 594fi 595AC_SUBST(nocommon_flag) 596if test x$ac_extra_checking != x ; then 597 AC_DEFINE(ENABLE_EXTRA_CHECKING, 1, 598[Define to 0/1 if you want extra run-time checking that might affect code 599generation.]) 600else 601 AC_DEFINE(ENABLE_EXTRA_CHECKING, 0) 602fi 603if test x$ac_df_checking != x ; then 604 AC_DEFINE(ENABLE_DF_CHECKING, 1, 605[Define if you want more run-time sanity checks for dataflow.]) 606fi 607if test x$ac_assert_checking != x ; then 608 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1, 609[Define if you want assertions enabled. This is a cheap check.]) 610fi 611if test x$ac_gimple_checking != x ; then 612 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1, 613[Define if you want operations on GIMPLE (the basic data structure of 614the high-level optimizers) to be checked for dynamic type safety at 615runtime. This is moderately expensive.]) 616fi 617GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING) 618if test x$ac_runtime_checking != x ; then 619 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1, 620[Define if you want runtime assertions enabled. This is a cheap check.]) 621fi 622if test x$ac_tree_checking != x ; then 623 AC_DEFINE(ENABLE_TREE_CHECKING, 1, 624[Define if you want all operations on trees (the basic data 625 structure of the front ends) to be checked for dynamic type safety 626 at runtime. This is moderately expensive. 627 ]) 628 TREECHECKING=yes 629fi 630if test x$ac_types_checking != x ; then 631 AC_DEFINE(ENABLE_TYPES_CHECKING, 1, 632[Define if you want all gimple types to be verified after gimplifiation. 633 This is cheap. 634 ]) 635fi 636AC_SUBST(TREECHECKING) 637if test x$ac_rtl_checking != x ; then 638 AC_DEFINE(ENABLE_RTL_CHECKING, 1, 639[Define if you want all operations on RTL (the basic data structure 640 of the optimizer and back end) to be checked for dynamic type safety 641 at runtime. This is quite expensive.]) 642fi 643if test x$ac_rtlflag_checking != x ; then 644 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1, 645[Define if you want RTL flag accesses to be checked against the RTL 646 codes that are supported for each access macro. This is relatively 647 cheap.]) 648fi 649if test x$ac_gc_checking != x ; then 650 AC_DEFINE(ENABLE_GC_CHECKING, 1, 651[Define if you want the garbage collector to do object poisoning and 652 other memory allocation checks. This is quite expensive.]) 653fi 654if test x$ac_gc_always_collect != x ; then 655 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1, 656[Define if you want the garbage collector to operate in maximally 657 paranoid mode, validating the entire heap and collecting garbage at 658 every opportunity. This is extremely expensive.]) 659fi 660if test x$ac_fold_checking != x ; then 661 AC_DEFINE(ENABLE_FOLD_CHECKING, 1, 662[Define if you want fold checked that it never destructs its argument. 663 This is quite expensive.]) 664fi 665valgrind_path_defines= 666valgrind_command= 667 668dnl # This check AC_REQUIREs various stuff, so it *must not* be inside 669dnl # an if statement. This was the source of very frustrating bugs 670dnl # in converting to autoconf 2.5x! 671AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no) 672 673# It is certainly possible that there's valgrind but no valgrind.h. 674# GCC relies on making annotations so we must have both. 675AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>) 676AC_PREPROC_IFELSE([AC_LANG_SOURCE( 677 [[#include <valgrind/memcheck.h> 678#ifndef VALGRIND_DISCARD 679#error VALGRIND_DISCARD not defined 680#endif]])], 681 [gcc_cv_header_valgrind_memcheck_h=yes], 682 [gcc_cv_header_valgrind_memcheck_h=no]) 683AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h) 684AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>) 685AC_PREPROC_IFELSE([AC_LANG_SOURCE( 686 [[#include <memcheck.h> 687#ifndef VALGRIND_DISCARD 688#error VALGRIND_DISCARD not defined 689#endif]])], 690 [gcc_cv_header_memcheck_h=yes], 691 [gcc_cv_header_memcheck_h=no]) 692AC_MSG_RESULT($gcc_cv_header_memcheck_h) 693if test $gcc_cv_header_valgrind_memcheck_h = yes; then 694 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1, 695 [Define if valgrind's valgrind/memcheck.h header is installed.]) 696fi 697if test $gcc_cv_header_memcheck_h = yes; then 698 AC_DEFINE(HAVE_MEMCHECK_H, 1, 699 [Define if valgrind's memcheck.h header is installed.]) 700fi 701 702if test x$ac_valgrind_checking != x ; then 703 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind, 704 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1]) 705 if test "x$valgrind_path" = "x" \ 706 || (test $have_valgrind_h = no \ 707 && test $gcc_cv_header_memcheck_h = no \ 708 && test $gcc_cv_header_valgrind_memcheck_h = no); then 709 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h]) 710 fi 711 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"' 712 valgrind_command="$valgrind_path -q" 713 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1, 714[Define if you want to run subprograms and generated programs 715 through valgrind (a memory checker). This is extremely expensive.]) 716fi 717AC_SUBST(valgrind_path_defines) 718AC_SUBST(valgrind_command) 719 720# Enable code coverage collection 721AC_ARG_ENABLE(coverage, 722[AS_HELP_STRING([[--enable-coverage[=LEVEL]]], 723 [enable compiler's code coverage collection. 724 Use to measure compiler performance and locate 725 unused parts of the compiler. With LEVEL, specify 726 optimization. Values are opt, noopt, 727 default is noopt])], 728[case "${enableval}" in 729 yes|noopt) 730 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0 -fkeep-static-functions" 731 ;; 732 opt) 733 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2 -fkeep-static-functions" 734 ;; 735 no) 736 # a.k.a. --disable-coverage 737 coverage_flags="" 738 ;; 739 *) 740 AC_MSG_ERROR(unknown coverage setting $enableval) 741 ;; 742esac], 743[coverage_flags=""]) 744AC_SUBST(coverage_flags) 745 746AC_ARG_ENABLE(gather-detailed-mem-stats, 747[AS_HELP_STRING([--enable-gather-detailed-mem-stats], 748 [enable detailed memory allocation stats gathering])], [], 749[enable_gather_detailed_mem_stats=no]) 750gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi` 751AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats, 752[Define to enable detailed memory allocation stats gathering.]) 753 754AC_ARG_ENABLE(valgrind-annotations, 755[AS_HELP_STRING([--enable-valgrind-annotations], 756 [enable valgrind runtime interaction])], [], 757[enable_valgrind_annotations=no]) 758if test x$enable_valgrind_annotations != xno \ 759 || test x$ac_valgrind_checking != x; then 760 if (test $have_valgrind_h = no \ 761 && test $gcc_cv_header_memcheck_h = no \ 762 && test $gcc_cv_header_valgrind_memcheck_h = no); then 763 AC_MSG_ERROR([*** Can't find valgrind/memcheck.h, memcheck.h or valgrind.h]) 764 fi 765 AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1, 766[Define to get calls to the valgrind runtime enabled.]) 767fi 768 769# ------------------------------- 770# Miscenalleous configure options 771# ------------------------------- 772 773# With stabs 774AC_ARG_WITH(stabs, 775[AS_HELP_STRING([--with-stabs], 776 [arrange to use stabs instead of host debug format])], 777stabs="$with_stabs", 778stabs=no) 779 780# Determine whether or not multilibs are enabled. 781AC_ARG_ENABLE(multilib, 782[AS_HELP_STRING([--enable-multilib], 783 [enable library support for multiple ABIs])], 784[], [enable_multilib=yes]) 785AC_SUBST(enable_multilib) 786 787# Determine whether or not multiarch is enabled. 788AC_ARG_ENABLE(multiarch, 789[AS_HELP_STRING([--enable-multiarch], 790 [enable support for multiarch paths])], 791[case "${enableval}" in 792yes|no|auto) enable_multiarch=$enableval;; 793*) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;; 794esac], [enable_multiarch=auto]) 795if test x${enable_multiarch} = xauto; then 796 if test x${with_native_system_header_dir} != x; then 797 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)" 798 enable_multiarch=no 799 fi 800 if test x$host != x$target && test "x$with_sysroot" = x; then 801 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)" 802 enable_multiarch=no 803 fi 804fi 805AC_MSG_CHECKING(for multiarch configuration) 806AC_SUBST(enable_multiarch) 807AC_MSG_RESULT($enable_multiarch$ma_msg_suffix) 808 809# needed for setting the multiarch name for soft-float/hard-float ABIs 810AC_SUBST(with_cpu) 811AC_SUBST(with_float) 812 813# default stack clash protection guard size as power of twos in bytes. 814# Please keep these in sync with params.def. 815stk_clash_min=12 816stk_clash_max=30 817 818# Keep the default value when the option is not used to 0, this allows us to 819# distinguish between the cases where the user specifially set a value via 820# configure and when the normal default value is used. 821AC_ARG_WITH(stack-clash-protection-guard-size, 822[AS_HELP_STRING([--with-stack-clash-protection-guard-size=size], 823[Set the default stack clash protection guard size for specific targets as a power of two in bytes.])], 824[DEFAULT_STK_CLASH_GUARD_SIZE="$with_stack_clash_protection_guard_size"], [DEFAULT_STK_CLASH_GUARD_SIZE=0]) 825if test $DEFAULT_STK_CLASH_GUARD_SIZE -ne 0 \ 826 && (test $DEFAULT_STK_CLASH_GUARD_SIZE -lt $stk_clash_min \ 827 || test $DEFAULT_STK_CLASH_GUARD_SIZE -gt $stk_clash_max); then 828 AC_MSG_ERROR(m4_normalize([ 829 Invalid value $DEFAULT_STK_CLASH_GUARD_SIZE for --with-stack-clash-protection-guard-size. \ 830 Must be between $stk_clash_min and $stk_clash_max.])) 831fi 832 833AC_DEFINE_UNQUOTED(DEFAULT_STK_CLASH_GUARD_SIZE, $DEFAULT_STK_CLASH_GUARD_SIZE, 834 [Define to larger than zero set the default stack clash protector size.]) 835 836# Enable __cxa_atexit for C++. 837AC_ARG_ENABLE(__cxa_atexit, 838[AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])], 839[], []) 840 841# Enable C extension for decimal float if target supports it. 842GCC_AC_ENABLE_DECIMAL_FLOAT([$target]) 843 844dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi` 845AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp, 846[Define to 1 to enable decimal float extension to C.]) 847 848# Use default_decimal_float for dependency. 849enable_decimal_float=$default_decimal_float 850 851bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi` 852AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid, 853[Define to 1 to specify that we are using the BID decimal floating 854point format instead of DPD]) 855 856# Enable C extension for fixed-point arithmetic. 857AC_ARG_ENABLE(fixed-point, 858[AS_HELP_STRING([--enable-fixed-point], 859 [enable fixed-point arithmetic extension to C])], 860[], 861[ 862 case $target in 863 arm*) 864 enable_fixed_point=yes 865 ;; 866 867 mips*-*-*) 868 enable_fixed_point=yes 869 ;; 870 *) 871 AC_MSG_WARN([fixed-point is not supported for this target, ignored]) 872 enable_fixed_point=no 873 ;; 874 esac 875]) 876AC_SUBST(enable_fixed_point) 877 878fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi` 879AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint, 880[Define to 1 to enable fixed-point arithmetic extension to C.]) 881 882# Enable threads 883# Pass with no value to take the default 884# Pass with a value to specify a thread package 885AC_ARG_ENABLE(threads, 886[AS_HELP_STRING([[--enable-threads[=LIB]]], 887 [enable thread usage for target GCC, 888 using LIB thread package])],, 889[enable_threads='']) 890 891AC_ARG_ENABLE(tls, 892[AS_HELP_STRING([--enable-tls], 893 [enable or disable generation of tls code 894 overriding the assembler check for tls support])], 895[ 896 case $enable_tls in 897 yes | no) ;; 898 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls. 899Valid choices are 'yes' and 'no'.]) ;; 900 esac 901], [enable_tls='']) 902 903AC_ARG_ENABLE(vtable-verify, 904[AS_HELP_STRING([--enable-vtable-verify], 905 [enable vtable verification feature])],, 906[enable_vtable_verify=no]) 907vtable_verify=`if test x$enable_vtable_verify = xyes; then echo 1; else echo 0; fi` 908AC_DEFINE_UNQUOTED(ENABLE_VTABLE_VERIFY, $vtable_verify, 909[Define 0/1 if vtable verification feature is enabled.]) 910 911AC_ARG_ENABLE(objc-gc, 912[AS_HELP_STRING([--enable-objc-gc], 913 [enable the use of Boehm's garbage collector with 914 the GNU Objective-C runtime])], 915if test x$enable_objc_gc = xno; then 916 objc_boehm_gc='' 917else 918 objc_boehm_gc=1 919fi, 920objc_boehm_gc='') 921 922AC_ARG_WITH(dwarf2, 923[AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])], 924dwarf2="$with_dwarf2", 925dwarf2=no) 926 927AC_ARG_ENABLE(shared, 928[AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])], 929[ 930 case $enable_shared in 931 yes | no) ;; 932 *) 933 enable_shared=no 934 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:," 935 for pkg in $enableval; do 936 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then 937 enable_shared=yes 938 fi 939 done 940 IFS="$ac_save_ifs" 941 ;; 942 esac 943], [enable_shared=yes]) 944AC_SUBST(enable_shared) 945 946AC_ARG_ENABLE(gcov, 947[ --disable-gcov don't provide libgcov and related host tools], 948[], [enable_gcov=yes]) 949AC_SUBST(enable_gcov) 950 951AC_ARG_WITH(specs, 952 [AS_HELP_STRING([--with-specs=SPECS], 953 [add SPECS to driver command-line processing])], 954 [CONFIGURE_SPECS=$withval], 955 [CONFIGURE_SPECS=] 956) 957AC_SUBST(CONFIGURE_SPECS) 958 959ACX_PKGVERSION([GCC]) 960ACX_BUGURL([https://gcc.gnu.org/bugs/]) 961 962# Sanity check enable_languages in case someone does not run the toplevel 963# configure # script. 964AC_ARG_ENABLE(languages, 965[AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])], 966[case ,${enable_languages}, in 967 ,,|,yes,) 968 # go safe -- we cannot be much sure without the toplevel 969 # configure's 970 # analysis of which target libs are present and usable 971 enable_languages=c 972 ;; 973 *,all,*) 974 AC_MSG_ERROR([only the toplevel supports --enable-languages=all]) 975 ;; 976 *,c,*) 977 ;; 978 *) 979 enable_languages=c,${enable_languages} 980 ;; 981esac], 982[enable_languages=c]) 983 984if test x"$enable_as_accelerator_for" != x; then 985 AC_DEFINE(ACCEL_COMPILER, 1, 986 [Define if this compiler should be built as the offload target compiler.]) 987 enable_as_accelerator=yes 988 case "${target}" in 989 *-intelmicemul-*) 990 # In this case we expect offload compiler to be built as native, so we 991 # need to rename the driver to avoid clashes with host's drivers. 992 program_transform_name="s&^&${target}-&" ;; 993 esac 994 sedscript="s#${target_noncanonical}#${enable_as_accelerator_for}-accel-${target_noncanonical}#" 995 program_transform_name=`echo $program_transform_name | sed $sedscript` 996 accel_dir_suffix=/accel/${target_noncanonical} 997 real_target_noncanonical=${enable_as_accelerator_for} 998fi 999AC_SUBST(enable_as_accelerator) 1000AC_SUBST(real_target_noncanonical) 1001AC_SUBST(accel_dir_suffix) 1002 1003for tgt in `echo $enable_offload_targets | sed 's/,/ /g'`; do 1004 tgt=`echo $tgt | sed 's/=.*//'` 1005 1006 if echo "$tgt" | grep "^hsa" > /dev/null ; then 1007 enable_hsa=1 1008 else 1009 enable_offloading=1 1010 fi 1011 1012 if test x"$offload_targets" = x; then 1013 offload_targets=$tgt 1014 else 1015 offload_targets="$offload_targets,$tgt" 1016 fi 1017done 1018AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets", 1019 [Define to offload targets, separated by commas.]) 1020if test x"$enable_offloading" != x; then 1021 AC_DEFINE(ENABLE_OFFLOADING, 1, 1022 [Define this to enable support for offloading.]) 1023else 1024 AC_DEFINE(ENABLE_OFFLOADING, 0, 1025 [Define this to enable support for offloading.]) 1026fi 1027 1028if test x"$enable_hsa" = x1 ; then 1029 AC_DEFINE(ENABLE_HSA, 1, 1030 [Define this to enable support for generating HSAIL.]) 1031fi 1032 1033AC_ARG_WITH(multilib-list, 1034[AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])], 1035:, 1036with_multilib_list=default) 1037 1038# ------------------------- 1039# Checks for other programs 1040# ------------------------- 1041 1042AC_PROG_MAKE_SET 1043 1044# Find some useful tools 1045AC_PROG_AWK 1046# We need awk to create options.c and options.h. 1047# Bail out if it's missing. 1048case ${AWK} in 1049 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;; 1050esac 1051 1052gcc_AC_PROG_LN_S 1053ACX_PROG_LN($LN_S) 1054AC_PROG_RANLIB 1055ranlib_flags="" 1056AC_SUBST(ranlib_flags) 1057 1058gcc_AC_PROG_INSTALL 1059 1060# See if cmp has --ignore-initial. 1061gcc_AC_PROG_CMP_IGNORE_INITIAL 1062 1063# See if we have the mktemp command. 1064AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no) 1065 1066# See if makeinfo has been installed and is modern enough 1067# that we can use it. 1068ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version, 1069 [GNU texinfo.* \([0-9][0-9.]*\)], 1070 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*]) 1071if test $gcc_cv_prog_makeinfo_modern = no; then 1072 AC_MSG_WARN([ 1073*** Makeinfo is missing or too old. 1074*** Info documentation will not be built.]) 1075 BUILD_INFO= 1076else 1077 BUILD_INFO=info 1078fi 1079AC_SUBST(BUILD_INFO) 1080 1081# Is pod2man recent enough to regenerate manpages? 1082AC_MSG_CHECKING([for recent Pod::Man]) 1083if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then 1084 AC_MSG_RESULT(yes) 1085 GENERATED_MANPAGES=generated-manpages 1086else 1087 AC_MSG_RESULT(no) 1088 GENERATED_MANPAGES= 1089fi 1090AC_SUBST(GENERATED_MANPAGES) 1091 1092MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing" 1093 1094# How about lex? 1095dnl Don't use AC_PROG_LEX; we insist on flex. 1096dnl LEXLIB is not useful in gcc. 1097AC_CHECK_PROGS([FLEX], flex, [$MISSING flex]) 1098 1099# Bison? 1100AC_CHECK_PROGS([BISON], bison, [$MISSING bison]) 1101 1102# Binutils are not build modules, unlike bison/flex/makeinfo. So we 1103# check for build == host before using them. 1104 1105# NM 1106if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \ 1107 && test -d ../binutils ; then 1108 NM='${objdir}/../binutils/nm-new' 1109else 1110 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm) 1111fi 1112 1113# AR 1114if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \ 1115 && test -d ../binutils ; then 1116 AR='${objdir}/../binutils/ar' 1117else 1118 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar) 1119fi 1120 1121# The jit documentation looks better if built with sphinx, but can be 1122# built with texinfo if sphinx is not available. 1123# Set "doc_build_sys" to "sphinx" or "texinfo" accordingly. 1124AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo) 1125 1126# -------------------- 1127# Checks for C headers 1128# -------------------- 1129 1130# Need to reject headers which give warnings, so that the -Werror bootstrap 1131# works later. *sigh* This needs to come before all header checks. 1132AC_PROG_CPP_WERROR 1133 1134AC_HEADER_STDC 1135AC_HEADER_TIME 1136ACX_HEADER_STRING 1137AC_HEADER_SYS_WAIT 1138AC_HEADER_TIOCGWINSZ 1139AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \ 1140 fcntl.h ftw.h unistd.h sys/file.h sys/time.h sys/mman.h \ 1141 sys/resource.h sys/param.h sys/times.h sys/stat.h \ 1142 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h) 1143 1144# Check for thread headers. 1145AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=]) 1146AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=]) 1147 1148# These tests can't be done till we know if we have limits.h. 1149gcc_AC_C_CHAR_BIT 1150AC_C_BIGENDIAN 1151 1152# ---------------------- 1153# Checks for C++ headers 1154# ---------------------- 1155 1156dnl Autoconf will give an error in the configure script if there is no 1157dnl C++ preprocessor. Hack to prevent that. 1158m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl 1159AC_PROG_CXXCPP 1160m4_popdef([AC_MSG_ERROR])[]dnl 1161 1162AC_CHECK_HEADERS(unordered_map) 1163AC_CHECK_HEADERS(tr1/unordered_map) 1164AC_CHECK_HEADERS(ext/hash_map) 1165 1166# -------- 1167# Dependency checking. 1168# -------- 1169 1170ZW_CREATE_DEPDIR 1171AC_CONFIG_COMMANDS([gccdepdir],[ 1172 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR 1173 for lang in $subdirs c-family common 1174 do 1175 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR 1176 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR]) 1177 1178ZW_PROG_COMPILER_DEPENDENCIES([CXX]) 1179 1180# -------- 1181# UNSORTED 1182# -------- 1183 1184 1185# These libraries may be used by collect2. 1186# We may need a special search path to get them linked. 1187AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs, 1188[save_LIBS="$LIBS" 1189for libs in '' -lld -lmld \ 1190 '-L/usr/lib/cmplrs/cc2.11 -lmld' \ 1191 '-L/usr/lib/cmplrs/cc3.11 -lmld' 1192do 1193 LIBS="$libs" 1194 AC_TRY_LINK_FUNC(ldopen, 1195 [gcc_cv_collect2_libs="$libs"; break]) 1196done 1197LIBS="$save_LIBS" 1198test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required']) 1199case $gcc_cv_collect2_libs in 1200 "none required") ;; 1201 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;; 1202esac 1203AC_SUBST(COLLECT2_LIBS) 1204 1205# When building Ada code on Alpha, we need exc_resume which is usually in 1206# -lexc. So test for it. 1207save_LIBS="$LIBS" 1208LIBS= 1209AC_SEARCH_LIBS(exc_resume, exc) 1210GNAT_LIBEXC="$LIBS" 1211LIBS="$save_LIBS" 1212AC_SUBST(GNAT_LIBEXC) 1213 1214# To support -mcpu=native on Solaris/SPARC, we need libkstat. 1215save_LIBS="$LIBS" 1216LIBS= 1217AC_SEARCH_LIBS(kstat_open, kstat) 1218EXTRA_GCC_LIBS="$LIBS" 1219LIBS="$save_LIBS" 1220AC_SUBST(EXTRA_GCC_LIBS) 1221 1222# Some systems put ldexp and frexp in libm instead of libc; assume 1223# they're both in the same place. jcf-dump needs them. 1224save_LIBS="$LIBS" 1225LIBS= 1226AC_SEARCH_LIBS(ldexp, m) 1227LDEXP_LIB="$LIBS" 1228LIBS="$save_LIBS" 1229AC_SUBST(LDEXP_LIB) 1230 1231# Some systems need dlopen 1232save_LIBS="$LIBS" 1233LIBS= 1234AC_SEARCH_LIBS(dlopen, dl) 1235DL_LIB="$LIBS" 1236LIBS="$save_LIBS" 1237AC_SUBST(DL_LIB) 1238 1239# Use <inttypes.h> only if it exists, 1240# doesn't clash with <sys/types.h>, declares intmax_t and defines 1241# PRId64 1242AC_MSG_CHECKING(for inttypes.h) 1243AC_CACHE_VAL(gcc_cv_header_inttypes_h, 1244[AC_COMPILE_IFELSE([AC_LANG_PROGRAM( 1245[[#define __STDC_FORMAT_MACROS 1246#include <sys/types.h> 1247#include <inttypes.h>]], 1248 [[intmax_t i = -1; 1249#ifndef PRId64 1250choke me 1251#endif]])], 1252 [gcc_cv_header_inttypes_h=yes], 1253 [gcc_cv_header_inttypes_h=no])]) 1254AC_MSG_RESULT($gcc_cv_header_inttypes_h) 1255if test $gcc_cv_header_inttypes_h = yes; then 1256 AC_DEFINE(HAVE_INTTYPES_H, 1, 1257 [Define if you have a working <inttypes.h> header file.]) 1258fi 1259 1260dnl Disabled until we have a complete test for buggy enum bitfields. 1261dnl gcc_AC_C_ENUM_BF_UNSIGNED 1262 1263define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl 1264 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl 1265 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl 1266 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl 1267 putchar_unlocked putc_unlocked) 1268AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \ 1269 popen sysconf strsignal getrusage nl_langinfo \ 1270 gettimeofday mbstowcs wcswidth mmap setlocale \ 1271 gcc_UNLOCKED_FUNCS madvise) 1272 1273if test x$ac_cv_func_mbstowcs = xyes; then 1274 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works, 1275[ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h> 1276int main() 1277{ 1278 mbstowcs(0, "", 0); 1279 return 0; 1280}]])], 1281 [gcc_cv_func_mbstowcs_works=yes], 1282 [gcc_cv_func_mbstowcs_works=no], 1283 [gcc_cv_func_mbstowcs_works=yes])]) 1284 if test x$gcc_cv_func_mbstowcs_works = xyes; then 1285 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1, 1286 [Define this macro if mbstowcs does not crash when its 1287 first argument is NULL.]) 1288 fi 1289fi 1290 1291AC_CHECK_TYPE(ssize_t, int) 1292AC_CHECK_TYPE(caddr_t, char *) 1293 1294GCC_AC_FUNC_MMAP_BLACKLIST 1295 1296case "${host}" in 1297*-*-*vms*) 1298 # Under VMS, vfork works very differently than on Unix. The standard test 1299 # won't work, and it isn't easily adaptable. It makes more sense to 1300 # just force it. 1301 ac_cv_func_vfork_works=yes 1302 ;; 1303esac 1304AC_FUNC_FORK 1305 1306AM_ICONV 1307 1308# Until we have in-tree GNU iconv: 1309LIBICONV_DEP= 1310if test -f "$LTLIBICONV"; then 1311 LIBICONV_DEP=$LTLIBICONV 1312fi 1313AC_SUBST(LIBICONV_DEP) 1314 1315AM_LC_MESSAGES 1316 1317AM_LANGINFO_CODESET 1318 1319# We will need to find libiberty.h and ansidecl.h 1320saved_CFLAGS="$CFLAGS" 1321CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC" 1322saved_CXXFLAGS="$CXXFLAGS" 1323CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC" 1324 1325# gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the 1326# normal autoconf function for these. But force definition of 1327# HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre 1328# basename handling in libiberty.h. 1329AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[ 1330#undef HAVE_DECL_BASENAME 1331#define HAVE_DECL_BASENAME 1 1332#include "ansidecl.h" 1333#include "system.h"]) 1334 1335gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \ 1336 madvise stpcpy strnlen strsignal strverscmp \ 1337 strtol strtoul strtoll strtoull setenv unsetenv \ 1338 errno snprintf vsnprintf vasprintf malloc realloc calloc \ 1339 free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[ 1340#include "ansidecl.h" 1341#include "system.h"]) 1342 1343gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[ 1344#include "ansidecl.h" 1345#include "system.h" 1346#ifdef HAVE_SYS_RESOURCE_H 1347#include <sys/resource.h> 1348#endif 1349]) 1350 1351AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ 1352#include "ansidecl.h" 1353#include "system.h" 1354#ifdef HAVE_SYS_RESOURCE_H 1355#include <sys/resource.h> 1356#endif 1357]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long], 1358[Define to `long' if <sys/resource.h> doesn't define.])]) 1359 1360# On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible 1361# FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname 1362# in collect2.c, <fcntl.h> isn't visible, but the configure test below needs 1363# to undef these macros to get the correct value for HAVE_DECL_LDGETNAME. 1364gcc_AC_CHECK_DECLS(ldgetname, , ,[ 1365#include "ansidecl.h" 1366#include "system.h" 1367#ifdef HAVE_LDFCN_H 1368#undef FREAD 1369#undef FWRITE 1370#include <ldfcn.h> 1371#endif 1372]) 1373 1374gcc_AC_CHECK_DECLS(times, , ,[ 1375#include "ansidecl.h" 1376#include "system.h" 1377#ifdef HAVE_SYS_TIMES_H 1378#include <sys/times.h> 1379#endif 1380]) 1381 1382gcc_AC_CHECK_DECLS(sigaltstack, , ,[ 1383#include "ansidecl.h" 1384#include "system.h" 1385#include <signal.h> 1386]) 1387 1388# More time-related stuff. 1389AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [ 1390AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ 1391#include "ansidecl.h" 1392#include "system.h" 1393#ifdef HAVE_SYS_TIMES_H 1394#include <sys/times.h> 1395#endif 1396]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])]) 1397if test $ac_cv_struct_tms = yes; then 1398 AC_DEFINE(HAVE_STRUCT_TMS, 1, 1399 [Define if <sys/times.h> defines struct tms.]) 1400fi 1401 1402# use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE. 1403# revisit after autoconf 2.50. 1404AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [ 1405AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ 1406#include "ansidecl.h" 1407#include "system.h" 1408]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])]) 1409if test $gcc_cv_type_clock_t = yes; then 1410 AC_DEFINE(HAVE_CLOCK_T, 1, 1411 [Define if <time.h> defines clock_t.]) 1412fi 1413 1414# Check if F_SETLKW is supported by fcntl. 1415AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [ 1416AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ 1417#include <fcntl.h>]], [[ 1418struct flock fl; 1419fl.l_whence = 0; 1420fl.l_start = 0; 1421fl.l_len = 0; 1422fl.l_pid = 0; 1423return fcntl (1, F_SETLKW, &fl);]])], 1424[ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])]) 1425if test $ac_cv_f_setlkw = yes; then 1426 AC_DEFINE(HOST_HAS_F_SETLKW, 1, 1427 [Define if F_SETLKW supported by fcntl.]) 1428fi 1429 1430# Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests. 1431CFLAGS="$saved_CFLAGS" 1432CXXFLAGS="$saved_CXXFLAGS" 1433 1434# mkdir takes a single argument on some systems. 1435gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG 1436 1437# File extensions 1438manext='.1' 1439objext='.o' 1440AC_SUBST(manext) 1441AC_SUBST(objext) 1442 1443# With Setjmp/Longjmp based exception handling. 1444AC_ARG_ENABLE(sjlj-exceptions, 1445[AS_HELP_STRING([--enable-sjlj-exceptions], 1446 [arrange to use setjmp/longjmp exception handling])], 1447[case $target in 1448 *-*-hpux10*) 1449 if test $enableval != yes; then 1450 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced]) 1451 enableval=yes 1452 fi 1453 ;; 1454esac 1455force_sjlj_exceptions=yes], 1456[case $target in 1457 *-*-hpux10*) 1458 force_sjlj_exceptions=yes 1459 enableval=yes 1460 ;; 1461 lm32*-*-*) 1462 force_sjlj_exceptions=yes 1463 enableval=yes 1464 ;; 1465 *) 1466 force_sjlj_exceptions=no 1467 ;; 1468esac]) 1469if test $force_sjlj_exceptions = yes; then 1470 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi` 1471 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj, 1472 [Define 0/1 to force the choice for exception handling model.]) 1473fi 1474 1475# -------------------------------------------------------- 1476# Build, host, and target specific configuration fragments 1477# -------------------------------------------------------- 1478 1479# Collect build-machine-specific information. 1480. ${srcdir}/config.build || exit 1 1481 1482# Collect host-machine-specific information. 1483. ${srcdir}/config.host || exit 1 1484 1485target_gtfiles= 1486 1487# Collect target-machine-specific information. 1488. ${srcdir}/config.gcc || exit 1 1489 1490extra_objs="${host_extra_objs} ${extra_objs}" 1491extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}" 1492 1493# Default the target-machine variables that were not explicitly set. 1494if test x"$tm_file" = x 1495then tm_file=$cpu_type/$cpu_type.h; fi 1496 1497if test x"$extra_headers" = x 1498then extra_headers=; fi 1499 1500if test x$md_file = x 1501then md_file=$cpu_type/$cpu_type.md; fi 1502 1503if test x$out_file = x 1504then out_file=$cpu_type/$cpu_type.c; fi 1505 1506if test x"$tmake_file" = x 1507then tmake_file=$cpu_type/t-$cpu_type 1508fi 1509 1510# Support --enable-initfini-array. 1511if test x$enable_initfini_array != xno; then 1512 tm_file="${tm_file} initfini-array.h" 1513fi 1514 1515if test x"$dwarf2" = xyes 1516then tm_file="$tm_file tm-dwarf2.h" 1517fi 1518 1519# Say what files are being used for the output code and MD file. 1520echo "Using \`$srcdir/config/$out_file' for machine-specific logic." 1521echo "Using \`$srcdir/config/$md_file' as machine description file." 1522 1523# If any of the xm_file variables contain nonexistent files, warn 1524# about them and drop them. 1525 1526bx= 1527for x in $build_xm_file; do 1528 if test -f $srcdir/config/$x 1529 then bx="$bx $x" 1530 else AC_MSG_WARN($srcdir/config/$x does not exist.) 1531 fi 1532done 1533build_xm_file="$bx" 1534 1535hx= 1536for x in $host_xm_file; do 1537 if test -f $srcdir/config/$x 1538 then hx="$hx $x" 1539 else AC_MSG_WARN($srcdir/config/$x does not exist.) 1540 fi 1541done 1542host_xm_file="$hx" 1543 1544tx= 1545for x in $xm_file; do 1546 if test -f $srcdir/config/$x 1547 then tx="$tx $x" 1548 else AC_MSG_WARN($srcdir/config/$x does not exist.) 1549 fi 1550done 1551xm_file="$tx" 1552 1553count=a 1554for f in $tm_file; do 1555 count=${count}x 1556done 1557if test $count = ax; then 1558 echo "Using \`$srcdir/config/$tm_file' as target machine macro file." 1559else 1560 echo "Using the following target machine macro files:" 1561 for f in $tm_file; do 1562 echo " $srcdir/config/$f" 1563 done 1564fi 1565 1566if test x$use_long_long_for_widest_fast_int = xyes; then 1567 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1, 1568[Define to 1 if the 'long long' type is wider than 'long' but still 1569efficiently supported by the host hardware.]) 1570fi 1571 1572gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi` 1573AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.]) 1574 1575gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi` 1576AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.]) 1577 1578count=a 1579for f in $host_xm_file; do 1580 count=${count}x 1581done 1582if test $count = a; then 1583 : 1584elif test $count = ax; then 1585 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file." 1586else 1587 echo "Using the following host machine macro files:" 1588 for f in $host_xm_file; do 1589 echo " $srcdir/config/$f" 1590 done 1591fi 1592echo "Using ${out_host_hook_obj} for host machine hooks." 1593 1594if test "$host_xm_file" != "$build_xm_file"; then 1595 count=a 1596 for f in $build_xm_file; do 1597 count=${count}x 1598 done 1599 if test $count = a; then 1600 : 1601 elif test $count = ax; then 1602 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file." 1603 else 1604 echo "Using the following build machine macro files:" 1605 for f in $build_xm_file; do 1606 echo " $srcdir/config/$f" 1607 done 1608 fi 1609fi 1610 1611if test -n "$configured_native_system_header_dir"; then 1612 native_system_header_dir=$configured_native_system_header_dir 1613fi 1614NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir" 1615AC_SUBST(NATIVE_SYSTEM_HEADER_DIR) 1616 1617case ${host} in 1618 powerpc*-*-darwin*) 1619 AC_CACHE_CHECK([whether mcontext_t fields have underscores], 1620 gcc_cv_mcontext_underscores, 1621 AC_COMPILE_IFELSE([AC_LANG_SOURCE([ 1622#include <sys/cdefs.h> 1623#include <sys/signal.h> 1624#include <ucontext.h> 1625int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; } 1626])], 1627 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes)) 1628 if test $gcc_cv_mcontext_underscores = yes; then 1629 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl 1630 [mcontext_t fields start with __]) 1631 fi 1632 ;; 1633esac 1634 1635# --------- 1636# Threading 1637# --------- 1638 1639# Check if a valid thread package 1640case ${enable_threads} in 1641 "" | no) 1642 # No threads 1643 target_thread_file='single' 1644 ;; 1645 yes) 1646 # default 1647 target_thread_file='single' 1648 ;; 1649 aix | dce | lynx | mipssde | posix | rtems | \ 1650 single | tpf | vxworks | win32) 1651 target_thread_file=${enable_threads} 1652 ;; 1653 *) 1654 echo "${enable_threads} is an unknown thread package" 1>&2 1655 exit 1 1656 ;; 1657esac 1658 1659if test x${thread_file} = x; then 1660 # No thread file set by target-specific clauses in config.gcc, 1661 # so use file chosen by default logic above 1662 thread_file=${target_thread_file} 1663fi 1664 1665# -------- 1666# UNSORTED 1667# -------- 1668 1669use_cxa_atexit=no 1670if test x$enable___cxa_atexit = xyes || \ 1671 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then 1672 if test x$host = x$target; then 1673 case $host in 1674 # mingw32 doesn't have __cxa_atexit but uses atexit registration 1675 # keyed to flag_use_cxa_atexit 1676 *-*-mingw32*) 1677 use_cxa_atexit=yes 1678 ;; 1679 powerpc-ibm-aix*) 1680 use_cxa_atexit=yes 1681 ;; 1682 *) 1683 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes], 1684 [echo "__cxa_atexit can't be enabled on this target"]) 1685 ;; 1686 esac 1687 else 1688 # We can't check for __cxa_atexit when building a cross, so assume 1689 # it is available 1690 use_cxa_atexit=yes 1691 fi 1692 if test x$use_cxa_atexit = xyes; then 1693 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2, 1694 [Define if you want to use __cxa_atexit, rather than atexit, to 1695 register C++ destructors for local statics and global objects. 1696 This is essential for fully standards-compliant handling of 1697 destructors, but requires __cxa_atexit in libc.]) 1698 fi 1699fi 1700 1701# Look for a file containing extra machine modes. 1702if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then 1703 extra_modes_file='$(srcdir)'/config/${extra_modes} 1704 AC_SUBST(extra_modes_file) 1705 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes", 1706 [Define to the name of a file containing a list of extra machine modes 1707 for this architecture.]) 1708fi 1709 1710# Convert extra_options into a form suitable for Makefile use. 1711extra_opt_files= 1712all_opt_files= 1713for f in $extra_options; do 1714 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f" 1715 all_opt_files="$all_opt_files $srcdir/config/$f" 1716done 1717AC_SUBST(extra_opt_files) 1718 1719# auto-host.h is the file containing items generated by autoconf and is 1720# the first file included by config.h. 1721# If host=build, it is correct to have bconfig include auto-host.h 1722# as well. If host!=build, we are in error and need to do more 1723# work to find out the build config parameters. 1724if test x$host = x$build 1725then 1726 build_auto=auto-host.h 1727else 1728 # We create a subdir, then run autoconf in the subdir. 1729 # To prevent recursion we set host and build for the new 1730 # invocation of configure to the build for this invocation 1731 # of configure. 1732 tempdir=build.$$ 1733 rm -rf $tempdir 1734 mkdir $tempdir 1735 cd $tempdir 1736 case ${srcdir} in 1737 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};; 1738 *) realsrcdir=../${srcdir};; 1739 esac 1740 # Clearing GMPINC is necessary to prevent host headers being 1741 # used by the build compiler. Defining GENERATOR_FILE stops 1742 # system.h from including gmp.h. 1743 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \ 1744 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \ 1745 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \ 1746 GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \ 1747 ${realsrcdir}/configure \ 1748 --enable-languages=${enable_languages-all} \ 1749 --target=$target_alias --host=$build_alias --build=$build_alias 1750 1751 # We just finished tests for the build machine, so rename 1752 # the file auto-build.h in the gcc directory. 1753 mv auto-host.h ../auto-build.h 1754 cd .. 1755 rm -rf $tempdir 1756 build_auto=auto-build.h 1757fi 1758AC_SUBST(build_subdir) 1759 1760tm_file="${tm_file} defaults.h" 1761tm_p_file="${tm_p_file} tm-preds.h" 1762tm_d_file="${tm_d_file} defaults.h" 1763host_xm_file="auto-host.h ansidecl.h ${host_xm_file}" 1764build_xm_file="${build_auto} ansidecl.h ${build_xm_file}" 1765# We don't want ansidecl.h in target files, write code there in ISO/GNU C. 1766# put this back in temporarily. 1767xm_file="auto-host.h ansidecl.h ${xm_file}" 1768 1769# -------- 1770# UNSORTED 1771# -------- 1772 1773changequote(,)dnl 1774# Compile in configure arguments. 1775if test -f configargs.h ; then 1776 # Being re-configured. 1777 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'` 1778 gcc_reconf_arguments=`echo "$gcc_config_arguments" | sed -e 's/^.*\( : (reconfigured) .*$\)/\1/'` 1779 if [ "$gcc_reconf_arguments" != " : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS" ]; then 1780 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS" 1781 fi 1782else 1783 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS" 1784fi 1785 1786# Double all backslashes and backslash all quotes to turn 1787# gcc_config_arguments into a C string. 1788sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out 1789$gcc_config_arguments 1790EOF 1791gcc_config_arguments_str=`cat conftest.out` 1792rm -f conftest.out 1793 1794cat > configargs.h <<EOF 1795/* Generated automatically. */ 1796static const char configuration_arguments[] = "$gcc_config_arguments_str"; 1797static const char thread_model[] = "$thread_file"; 1798 1799static const struct { 1800 const char *name, *value; 1801} configure_default_options[] = $configure_default_options; 1802EOF 1803changequote([,])dnl 1804 1805changequote(,)dnl 1806gcc_BASEVER=`cat $srcdir/BASE-VER` 1807gcc_DEVPHASE=`cat $srcdir/DEV-PHASE` 1808gcc_DATESTAMP=`cat $srcdir/DATESTAMP` 1809if test -f $srcdir/REVISION ; then 1810 gcc_REVISION=`cat $srcdir/REVISION` 1811else 1812 gcc_REVISION="" 1813fi 1814cat > plugin-version.h <<EOF 1815#include "configargs.h" 1816 1817#define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'` 1818#define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'` 1819#define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'` 1820#define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR) 1821 1822static char basever[] = "$gcc_BASEVER"; 1823static char datestamp[] = "$gcc_DATESTAMP"; 1824static char devphase[] = "$gcc_DEVPHASE"; 1825static char revision[] = "$gcc_REVISION"; 1826 1827/* FIXME plugins: We should make the version information more precise. 1828 One way to do is to add a checksum. */ 1829 1830static struct plugin_gcc_version gcc_version = {basever, datestamp, 1831 devphase, revision, 1832 configuration_arguments}; 1833EOF 1834changequote([,])dnl 1835 1836# Determine what GCC version number to use in filesystem paths. 1837GCC_BASE_VER 1838 1839# Internationalization 1840ZW_GNU_GETTEXT_SISTER_DIR 1841 1842# If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get 1843# -liconv on the link line twice. 1844case "$LIBINTL" in *$LIBICONV*) 1845 LIBICONV= ;; 1846esac 1847 1848AC_ARG_ENABLE(secureplt, 1849[AS_HELP_STRING([--enable-secureplt], 1850 [enable -msecure-plt by default for PowerPC])], 1851[], []) 1852 1853AC_ARG_ENABLE(mingw-wildcard, 1854[AS_HELP_STRING([--enable-mingw-wildcard], 1855 [Set whether to expand wildcard on command-line. 1856 Default to platform configuration])], 1857[],[enable_mingw_wildcard=platform]) 1858AS_IF([test x"$enable_mingw_wildcard" != xplatform ], 1859 [AC_DEFINE_UNQUOTED(MINGW_DOWILDCARD, 1860 $(test x"$enable_mingw_wildcard" = xno; echo $?), 1861 [Value to set mingw's _dowildcard to.])]) 1862 1863AC_ARG_ENABLE(large-address-aware, 1864[AS_HELP_STRING([--enable-large-address-aware], 1865 [Link mingw executables with --large-address-aware])]) 1866AS_IF([test x"$enable_large_address_aware" = xyes], 1867 [AC_DEFINE([MINGW_DEFAULT_LARGE_ADDR_AWARE], 1, 1868 [Define if we should link mingw executables with --large-address-aware])]) 1869 1870AC_ARG_ENABLE(leading-mingw64-underscores, 1871 AS_HELP_STRING([--enable-leading-mingw64-underscores], 1872 [enable leading underscores on 64 bit mingw targets]), 1873 [],[]) 1874AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ], 1875 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1, 1876 [Define if we should use leading underscore on 64 bit mingw targets])]) 1877 1878AC_ARG_ENABLE(cld, 1879[AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [], 1880[enable_cld=no]) 1881 1882AC_ARG_ENABLE(frame-pointer, 1883[AS_HELP_STRING([--enable-frame-pointer], 1884 [enable -fno-omit-frame-pointer by default for 32bit x86])], [], 1885[ 1886case $target_os in 1887linux* | darwin[[8912]]*) 1888 # Enable -fomit-frame-pointer by default for Linux and Darwin with 1889 # DWARF2. 1890 enable_frame_pointer=no 1891 ;; 1892*) 1893 enable_frame_pointer=yes 1894 ;; 1895esac 1896]) 1897 1898# Windows32 Registry support for specifying GCC installation paths. 1899AC_ARG_ENABLE(win32-registry, 1900[AS_HELP_STRING([--disable-win32-registry], 1901 [disable lookup of installation paths in the 1902 Registry on Windows hosts]) 1903AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)]) 1904AS_HELP_STRING([--enable-win32-registry=KEY], 1905 [use KEY instead of GCC version as the last portion 1906 of the registry key])],,) 1907 1908case $host_os in 1909 win32 | pe | cygwin* | mingw32*) 1910 if test "x$enable_win32_registry" != xno; then 1911 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no]) 1912 fi 1913 1914 if test "x$enable_win32_registry" != xno; then 1915 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1, 1916 [Define to 1 if installation paths should be looked up in the Windows 1917 Registry. Ignored on non-Windows hosts.]) 1918 1919 if test "x$enable_win32_registry" != xyes \ 1920 && test "x$enable_win32_registry" != x; then 1921 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry", 1922 [Define to be the last component of the Windows registry key under which 1923 to look for installation paths. The full key used will be 1924 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}. 1925 The default is the GCC version number.]) 1926 fi 1927 fi 1928 ;; 1929esac 1930 1931# Get an absolute path to the GCC top-level source directory 1932holddir=`${PWDCMD-pwd}` 1933cd $srcdir 1934topdir=`${PWDCMD-pwd}` 1935cd $holddir 1936 1937# Conditionalize the makefile for this host machine. 1938xmake_file= 1939for f in ${host_xmake_file} 1940do 1941 if test -f ${srcdir}/config/$f 1942 then 1943 xmake_file="${xmake_file} \$(srcdir)/config/$f" 1944 fi 1945done 1946 1947# Conditionalize the makefile for this target machine. 1948tmake_file_= 1949for f in ${tmake_file} 1950do 1951 if test -f ${srcdir}/config/$f 1952 then 1953 tmake_file_="${tmake_file_} \$(srcdir)/config/$f" 1954 fi 1955done 1956tmake_file="${tmake_file_}" 1957 1958out_object_file=`basename $out_file .c`.o 1959common_out_object_file=`basename $common_out_file .c`.o 1960 1961tm_file_list="options.h" 1962tm_include_list="options.h insn-constants.h" 1963for f in $tm_file; do 1964 case $f in 1965 ./* ) 1966 f=`echo $f | sed 's/^..//'` 1967 tm_file_list="${tm_file_list} $f" 1968 tm_include_list="${tm_include_list} $f" 1969 ;; 1970 defaults.h ) 1971 tm_file_list="${tm_file_list} \$(srcdir)/$f" 1972 tm_include_list="${tm_include_list} $f" 1973 ;; 1974 * ) 1975 tm_file_list="${tm_file_list} \$(srcdir)/config/$f" 1976 tm_include_list="${tm_include_list} config/$f" 1977 ;; 1978 esac 1979done 1980 1981tm_p_file_list= 1982tm_p_include_list= 1983for f in $tm_p_file; do 1984 case $f in 1985 tm-preds.h ) 1986 tm_p_file_list="${tm_p_file_list} $f" 1987 tm_p_include_list="${tm_p_include_list} $f" 1988 ;; 1989 * ) 1990 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f" 1991 tm_p_include_list="${tm_p_include_list} config/$f" 1992 esac 1993done 1994 1995tm_d_file_list= 1996tm_d_include_list="options.h insn-constants.h" 1997for f in $tm_d_file; do 1998 case $f in 1999 defaults.h ) 2000 tm_d_file_list="${tm_d_file_list} \$(srcdir)/$f" 2001 tm_d_include_list="${tm_d_include_list} $f" 2002 ;; 2003 * ) 2004 tm_d_file_list="${tm_d_file_list} \$(srcdir)/config/$f" 2005 tm_d_include_list="${tm_d_include_list} config/$f" 2006 ;; 2007 esac 2008done 2009 2010xm_file_list= 2011xm_include_list= 2012for f in $xm_file; do 2013 case $f in 2014 ansidecl.h ) 2015 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f" 2016 xm_include_list="${xm_include_list} $f" 2017 ;; 2018 auto-host.h ) 2019 xm_file_list="${xm_file_list} $f" 2020 xm_include_list="${xm_include_list} $f" 2021 ;; 2022 * ) 2023 xm_file_list="${xm_file_list} \$(srcdir)/config/$f" 2024 xm_include_list="${xm_include_list} config/$f" 2025 ;; 2026 esac 2027done 2028 2029host_xm_file_list= 2030host_xm_include_list= 2031for f in $host_xm_file; do 2032 case $f in 2033 ansidecl.h ) 2034 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f" 2035 host_xm_include_list="${host_xm_include_list} $f" 2036 ;; 2037 auto-host.h ) 2038 host_xm_file_list="${host_xm_file_list} $f" 2039 host_xm_include_list="${host_xm_include_list} $f" 2040 ;; 2041 * ) 2042 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f" 2043 host_xm_include_list="${host_xm_include_list} config/$f" 2044 ;; 2045 esac 2046done 2047 2048build_xm_file_list= 2049for f in $build_xm_file; do 2050 case $f in 2051 ansidecl.h ) 2052 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f" 2053 build_xm_include_list="${build_xm_include_list} $f" 2054 ;; 2055 auto-build.h | auto-host.h ) 2056 build_xm_file_list="${build_xm_file_list} $f" 2057 build_xm_include_list="${build_xm_include_list} $f" 2058 ;; 2059 * ) 2060 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f" 2061 build_xm_include_list="${build_xm_include_list} config/$f" 2062 ;; 2063 esac 2064done 2065 2066# Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a 2067# cross-compiler which does not use the native headers and libraries. 2068# Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR. 2069CROSS= AC_SUBST(CROSS) 2070ALL=all.internal AC_SUBST(ALL) 2071SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR) 2072BUILD_SYSTEM_HEADER_DIR=$SYSTEM_HEADER_DIR AC_SUBST(BUILD_SYSTEM_HEADER_DIR) 2073 2074if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x || 2075 test x$build != x$host || test "x$with_build_sysroot" != x; then 2076 if test "x$with_build_sysroot" != x; then 2077 BUILD_SYSTEM_HEADER_DIR=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)' 2078 else 2079 BUILD_SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)' 2080 fi 2081 2082 if test x$host != x$target 2083 then 2084 CROSS="-DCROSS_DIRECTORY_STRUCTURE" 2085 ALL=all.cross 2086 SYSTEM_HEADER_DIR=$BUILD_SYSTEM_HEADER_DIR 2087 elif test "x$TARGET_SYSTEM_ROOT" != x; then 2088 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)' 2089 fi 2090 2091 if test "x$with_build_sysroot" != "x"; then 2092 target_header_dir="${with_build_sysroot}${native_system_header_dir}" 2093 elif test "x$with_sysroot" = x; then 2094 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include" 2095 elif test "x$with_sysroot" = xyes; then 2096 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}" 2097 else 2098 target_header_dir="${with_sysroot}${native_system_header_dir}" 2099 fi 2100else 2101 target_header_dir=${native_system_header_dir} 2102fi 2103 2104# If this is a cross-compiler that does not 2105# have its own set of headers then define 2106# inhibit_libc 2107 2108# If this is using newlib, without having the headers available now, 2109# then define inhibit_libc in LIBGCC2_CFLAGS. 2110# This prevents libgcc2 from containing any code which requires libc 2111# support. 2112: ${inhibit_libc=false} 2113if { { test x$host != x$target && test "x$with_sysroot" = x ; } || 2114 test x$with_newlib = xyes ; } && 2115 { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then 2116 inhibit_libc=true 2117fi 2118AC_SUBST(inhibit_libc) 2119 2120# When building gcc with a cross-compiler, we need to adjust things so 2121# that the generator programs are still built with the native compiler. 2122# Also, we cannot run fixincludes. 2123 2124# These are the normal (build=host) settings: 2125CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD) 2126CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD) 2127BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS) 2128BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS) 2129BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS) 2130STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC) 2131 2132BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS)' AC_SUBST(BUILD_NO_PIE_CFLAGS) 2133BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG)' AC_SUBST(BUILD_NO_PIE_FLAG) 2134 2135# And these apply if build != host, or we are generating coverage data 2136if test x$build != x$host || test "x$coverage_flags" != x 2137then 2138 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)' 2139 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)' 2140 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)' 2141 2142 NO_PIE_CFLAGS_FOR_BUILD=${NO_PIE_CFLAGS_FOR_BUILD-${NO_PIE_CFLAGS}} 2143 NO_PIE_FLAG_FOR_BUILD=${NO_PIE_FLAG_FOR_BUILD-${NO_PIE_FLAG}} 2144 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS_FOR_BUILD)' 2145 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG_FOR_BUILD)' 2146fi 2147AC_SUBST(NO_PIE_CFLAGS_FOR_BUILD) 2148AC_SUBST(NO_PIE_FLAG_FOR_BUILD) 2149 2150# Expand extra_headers to include complete path. 2151# This substitutes for lots of t-* files. 2152extra_headers_list= 2153# Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers. 2154for file in ${extra_headers} ; do 2155 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}" 2156done 2157 2158# If use_gcc_tgmath is set, append ginclude/tgmath.h. 2159if test x"$use_gcc_tgmath" = xyes 2160then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h" 2161fi 2162 2163# Define collect2 in Makefile. 2164case $host_can_use_collect2 in 2165 no) collect2= ;; 2166 *) collect2='collect2$(exeext)' ;; 2167esac 2168AC_SUBST([collect2]) 2169 2170# Add a definition of USE_COLLECT2 if system wants one. 2171case $use_collect2 in 2172 no) use_collect2= ;; 2173 "") ;; 2174 *) 2175 host_xm_defines="${host_xm_defines} USE_COLLECT2" 2176 xm_defines="${xm_defines} USE_COLLECT2" 2177 case $host_can_use_collect2 in 2178 no) 2179 AC_MSG_ERROR([collect2 is required but cannot be built on this system]) 2180 ;; 2181 esac 2182 ;; 2183esac 2184 2185AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}", 2186[Define to the name of the LTO plugin DSO that must be 2187 passed to the linker's -plugin=LIB option.]) 2188 2189# --------------------------- 2190# Assembler & linker features 2191# --------------------------- 2192 2193# During stage 2, ld is actually gcc/collect-ld, which is a small script to 2194# discern between when to use prev-ld/ld-new and when to use ld/ld-new. 2195# However when ld-new is first executed from the build tree, libtool will 2196# relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers 2197# to the build tree. While doing this we need to use the previous-stage 2198# linker, or we have an infinite loop. The presence of a shell script as 2199# ld/ld-new, and the fact that the script *uses ld itself*, is what confuses 2200# the gcc/collect-ld script. So we need to know how libtool works, or 2201# exec-tool will fail. 2202 2203m4_defun([_LT_CONFIG_COMMANDS], []) 2204AC_PROG_LIBTOOL 2205AC_SUBST(objdir) 2206AC_SUBST(enable_fast_install) 2207 2208# Identify the assembler which will work hand-in-glove with the newly 2209# built GCC, so that we can examine its features. This is the assembler 2210# which will be driven by the driver program. 2211# 2212# If build != host, and we aren't building gas in-tree, we identify a 2213# build->target assembler and hope that it will have the same features 2214# as the host->target assembler we'll be using. 2215gcc_cv_gas_major_version= 2216gcc_cv_gas_minor_version= 2217gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas 2218 2219m4_pattern_allow([AS_FOR_TARGET])dnl 2220AS_VAR_SET_IF(gcc_cv_as,, [ 2221if test -x "$DEFAULT_ASSEMBLER"; then 2222 gcc_cv_as="$DEFAULT_ASSEMBLER" 2223elif test -f $gcc_cv_as_gas_srcdir/configure.ac \ 2224 && test -f ../gas/Makefile \ 2225 && test x$build = x$host; then 2226 gcc_cv_as=../gas/as-new$build_exeext 2227elif test -x as$build_exeext; then 2228 # Build using assembler in the current directory. 2229 gcc_cv_as=./as$build_exeext 2230elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then 2231 gcc_cv_as="$AS_FOR_TARGET" 2232else 2233 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET) 2234fi]) 2235 2236ORIGINAL_AS_FOR_TARGET=$gcc_cv_as 2237AC_SUBST(ORIGINAL_AS_FOR_TARGET) 2238case "$ORIGINAL_AS_FOR_TARGET" in 2239 ./as | ./as$build_exeext) ;; 2240 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;; 2241esac 2242 2243AC_MSG_CHECKING(what assembler to use) 2244if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then 2245 # Single tree build which includes gas. We want to prefer it 2246 # over whatever linker top-level may have detected, since 2247 # we'll use what we're building after installation anyway. 2248 AC_MSG_RESULT(newly built gas) 2249 in_tree_gas=yes 2250 _gcc_COMPUTE_GAS_VERSION 2251 in_tree_gas_is_elf=no 2252 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \ 2253 || (grep 'obj_format = multi' ../gas/Makefile \ 2254 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null 2255 then 2256 in_tree_gas_is_elf=yes 2257 fi 2258else 2259 AC_MSG_RESULT($gcc_cv_as) 2260 in_tree_gas=no 2261fi 2262 2263default_ld= 2264AC_ARG_ENABLE(ld, 2265[[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]], 2266[case "${enableval}" in 2267 no) 2268 default_ld=ld.gold 2269 ;; 2270 esac]) 2271 2272install_gold_as_default=no 2273AC_ARG_ENABLE(gold, 2274[[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]], 2275[case "${enableval}" in 2276 default) 2277 install_gold_as_default=yes 2278 ;; 2279 yes) 2280 if test x${default_ld} != x; then 2281 install_gold_as_default=yes 2282 fi 2283 ;; 2284 no) 2285 ;; 2286 *) 2287 AC_MSG_ERROR([invalid --enable-gold argument]) 2288 ;; 2289 esac]) 2290 2291# Identify the linker which will work hand-in-glove with the newly 2292# built GCC, so that we can examine its features. This is the linker 2293# which will be driven by the driver program. 2294# 2295# If build != host, and we aren't building gas in-tree, we identify a 2296# build->target linker and hope that it will have the same features 2297# as the host->target linker we'll be using. 2298gcc_cv_gld_major_version= 2299gcc_cv_gld_minor_version= 2300gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld 2301gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold 2302gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd 2303 2304AS_VAR_SET_IF(gcc_cv_ld,, [ 2305if test -x "$DEFAULT_LINKER"; then 2306 gcc_cv_ld="$DEFAULT_LINKER" 2307elif test $install_gold_as_default = yes \ 2308 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \ 2309 && test -f ../gold/Makefile \ 2310 && test x$build = x$host; then 2311 gcc_cv_ld=../gold/ld-new$build_exeext 2312elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \ 2313 && test -f ../ld/Makefile \ 2314 && test x$build = x$host; then 2315 gcc_cv_ld=../ld/ld-new$build_exeext 2316elif test -x collect-ld$build_exeext; then 2317 # Build using linker in the current directory. 2318 gcc_cv_ld=./collect-ld$build_exeext 2319elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then 2320 gcc_cv_ld="$LD_FOR_TARGET" 2321else 2322 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET) 2323fi]) 2324 2325ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld 2326PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"` 2327# if the PLUGIN_LD is set ld-new, just have it as ld 2328# as that is the installed named. 2329if test x$PLUGIN_LD_SUFFIX = xld-new \ 2330 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then 2331 PLUGIN_LD_SUFFIX=ld 2332fi 2333AC_ARG_WITH(plugin-ld, 2334[AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])], 2335[if test x"$withval" != x; then 2336 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval" 2337 PLUGIN_LD_SUFFIX="$withval" 2338 fi]) 2339AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET) 2340AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker]) 2341 2342# Check to see if we are using gold instead of ld 2343AC_MSG_CHECKING(whether we are using gold) 2344ld_is_gold=no 2345if test x$gcc_cv_ld != x; then 2346 if $gcc_cv_ld --version 2>/dev/null | sed 1q \ 2347 | grep "GNU gold" > /dev/null; then 2348 ld_is_gold=yes 2349 fi 2350fi 2351AC_MSG_RESULT($ld_is_gold) 2352 2353AC_MSG_CHECKING(gold linker with split stack support as non default) 2354# Check to see if default ld is not gold, but gold is 2355# available and has support for split stack. If gcc was configured 2356# with gold then no checking is done. 2357# 2358if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then 2359 2360# For platforms other than powerpc64*, enable as appropriate. 2361 2362 gold_non_default=no 2363 ld_gold=`which ${gcc_cv_ld}.gold` 2364# Make sure this gold has minimal split stack support 2365 if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then 2366 ld_vers=`$ld_gold --version | sed 1q` 2367 gold_vers=`echo $ld_vers | sed -n \ 2368 -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'` 2369 case $target in 2370# check that the gold version contains the complete split stack support 2371# on powerpc64 big and little endian 2372 powerpc64*-*-*) 2373 case "$gold_vers" in 2374 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes 2375 ;; 2376 *) gold_non_default=no 2377 ;; 2378 esac 2379 ;; 2380 esac 2381 fi 2382 if test $gold_non_default = yes; then 2383 AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1, 2384 [Define if the gold linker supports split stack and is available as a non-default]) 2385 fi 2386fi 2387AC_MSG_RESULT($gold_non_default) 2388 2389ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld 2390AC_SUBST(ORIGINAL_LD_FOR_TARGET) 2391case "$ORIGINAL_LD_FOR_TARGET" in 2392 ./collect-ld | ./collect-ld$build_exeext) ;; 2393 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;; 2394esac 2395 2396AC_MSG_CHECKING(what linker to use) 2397if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \ 2398 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then 2399 # Single tree build which includes ld. We want to prefer it 2400 # over whatever linker top-level may have detected, since 2401 # we'll use what we're building after installation anyway. 2402 AC_MSG_RESULT(newly built ld) 2403 in_tree_ld=yes 2404 in_tree_ld_is_elf=no 2405 if (grep 'EMUL = .*elf' ../ld/Makefile \ 2406 || grep 'EMUL = .*linux' ../ld/Makefile \ 2407 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then 2408 in_tree_ld_is_elf=yes 2409 elif test "$ld_is_gold" = yes; then 2410 in_tree_ld_is_elf=yes 2411 fi 2412 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 2413 do 2414changequote(,)dnl 2415 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f` 2416 if test x$gcc_cv_gld_version != x; then 2417 break 2418 fi 2419 done 2420 case $gcc_cv_gld_version in 2421 VERSION=[0-9]*) ;; 2422changequote([,])dnl 2423 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;; 2424changequote(,)dnl 2425 esac 2426 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"` 2427 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"` 2428changequote([,])dnl 2429 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext 2430 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext 2431else 2432 AC_MSG_RESULT($gcc_cv_ld) 2433 in_tree_ld=no 2434 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext` 2435 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext 2436 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext 2437fi 2438 2439AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET) 2440AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET) 2441 2442# Figure out what nm we will be using. 2443gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils 2444AS_VAR_SET_IF(gcc_cv_nm,, [ 2445if test -f $gcc_cv_binutils_srcdir/configure.ac \ 2446 && test -f ../binutils/Makefile \ 2447 && test x$build = x$host; then 2448 gcc_cv_nm=../binutils/nm-new$build_exeext 2449elif test -x nm$build_exeext; then 2450 gcc_cv_nm=./nm$build_exeext 2451elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then 2452 gcc_cv_nm="$NM_FOR_TARGET" 2453else 2454 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET) 2455fi]) 2456 2457AC_MSG_CHECKING(what nm to use) 2458if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then 2459 # Single tree build which includes binutils. 2460 AC_MSG_RESULT(newly built nm) 2461 in_tree_nm=yes 2462else 2463 AC_MSG_RESULT($gcc_cv_nm) 2464 in_tree_nm=no 2465fi 2466 2467ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm 2468AC_SUBST(ORIGINAL_NM_FOR_TARGET) 2469case "$ORIGINAL_NM_FOR_TARGET" in 2470 ./nm | ./nm$build_exeext) ;; 2471 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;; 2472esac 2473 2474 2475# Figure out what objdump we will be using. 2476AS_VAR_SET_IF(gcc_cv_objdump,, [ 2477if test -f $gcc_cv_binutils_srcdir/configure.ac \ 2478 && test -f ../binutils/Makefile \ 2479 && test x$build = x$host; then 2480 # Single tree build which includes binutils. 2481 gcc_cv_objdump=../binutils/objdump$build_exeext 2482elif test -x objdump$build_exeext; then 2483 gcc_cv_objdump=./objdump$build_exeext 2484elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then 2485 gcc_cv_objdump="$OBJDUMP_FOR_TARGET" 2486else 2487 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET) 2488fi]) 2489 2490AC_MSG_CHECKING(what objdump to use) 2491if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then 2492 # Single tree build which includes binutils. 2493 AC_MSG_RESULT(newly built objdump) 2494elif test x$gcc_cv_objdump = x; then 2495 AC_MSG_RESULT(not found) 2496else 2497 AC_MSG_RESULT($gcc_cv_objdump) 2498fi 2499 2500# Figure out what readelf we will be using. 2501AS_VAR_SET_IF(gcc_cv_readelf,, [ 2502if test -f $gcc_cv_binutils_srcdir/configure.ac \ 2503 && test -f ../binutils/Makefile \ 2504 && test x$build = x$host; then 2505 # Single tree build which includes binutils. 2506 gcc_cv_readelf=../binutils/readelf$build_exeext 2507elif test -x readelf$build_exeext; then 2508 gcc_cv_readelf=./readelf$build_exeext 2509elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then 2510 gcc_cv_readelf="$READELF_FOR_TARGET" 2511else 2512 AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET) 2513fi]) 2514 2515AC_MSG_CHECKING(what readelf to use) 2516if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then 2517 # Single tree build which includes binutils. 2518 AC_MSG_RESULT(newly built readelf) 2519elif test x$gcc_cv_readelf = x; then 2520 AC_MSG_RESULT(not found) 2521else 2522 AC_MSG_RESULT($gcc_cv_readelf) 2523fi 2524 2525# Figure out what otool we will be using. 2526AS_VAR_SET_IF(gcc_cv_otool,, [ 2527if test -x otool$build_exeext; then 2528 gcc_cv_otool=./otool$build_exeext 2529elif ( set dummy $OTOOL_FOR_TARGET; test -x $[2] ); then 2530 gcc_cv_otool="$OTOOL_FOR_TARGET" 2531else 2532 AC_PATH_PROG(gcc_cv_otool, $OTOOL_FOR_TARGET) 2533fi]) 2534 2535AC_MSG_CHECKING(what otool to use) 2536if test x$gcc_cv_otool = x; then 2537 AC_MSG_RESULT(not found) 2538else 2539 AC_MSG_RESULT($gcc_cv_otool) 2540fi 2541 2542# Figure out what assembler alignment features are present. 2543gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align, 2544 [2,6,0],, 2545[.balign 4 2546.p2align 2],, 2547[AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1, 2548 [Define if your assembler supports .balign and .p2align.])]) 2549 2550gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align, 2551 [2,8,0],, 2552 [.p2align 4,,7],, 2553[AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1, 2554 [Define if your assembler supports specifying the maximum number 2555 of bytes to skip when using the GAS .p2align command.])]) 2556 2557gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16, 2558 [2,8,0],, 2559 [.literal16],, 2560[AC_DEFINE(HAVE_GAS_LITERAL16, 1, 2561 [Define if your assembler supports .literal16.])]) 2562 2563gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1, 2564 [elf,2,9,0],, 2565 [conftest_label1: .word 0 2566.subsection -1 2567conftest_label2: .word 0 2568.previous], 2569 [if test x$gcc_cv_nm != x; then 2570 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1 2571 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2 2572 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1 2573 then : 2574 else gcc_cv_as_subsection_m1=yes 2575 fi 2576 rm -f conftest.nm1 conftest.nm2 2577 fi], 2578 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1, 2579 [Define if your assembler supports .subsection and .subsection -1 starts 2580 emitting at the beginning of your section.])]) 2581 2582gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak, 2583 [2,2,0],, 2584 [ .weak foobar],, 2585[AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])]) 2586 2587gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref, 2588 [2,17,0],, 2589 [ .weakref foobar, barfnot],, 2590[AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])]) 2591 2592gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat, 2593 [2,15,91],, 2594 [ .SPACE $TEXT$ 2595 .NSUBSPA $CODE$,COMDAT],, 2596[AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])]) 2597 2598# .hidden needs to be supported in both the assembler and the linker, 2599# because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN. 2600# This is irritatingly difficult to feature test for; we have to check the 2601# date string after the version number. If we've got an in-tree 2602# ld, we don't know its patchlevel version, so we set the baseline at 2.13 2603# to be safe. 2604# The gcc_GAS_CHECK_FEATURE call just sets a cache variable. 2605case "${target}" in 2606 *-*-aix*) 2607 conftest_s=' .globl foobar,hidden' 2608 ;; 2609 *) 2610 conftest_s=' .hidden foobar 2611foobar:' 2612 ;; 2613esac 2614gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden, 2615 [elf,2,13,0],, [$conftest_s]) 2616case "${target}" in 2617 *-*-darwin*) 2618 # Darwin as has some visibility support, though with a different syntax. 2619 gcc_cv_as_hidden=yes 2620 ;; 2621esac 2622 2623# gnu_indirect_function type is an extension proposed at 2624# http://groups.google/com/group/generic-abi/files. It allows dynamic runtime 2625# selection of function implementation 2626AC_ARG_ENABLE(gnu-indirect-function, 2627 [AS_HELP_STRING([--enable-gnu-indirect-function], 2628 [enable the use of the @gnu_indirect_function to glibc systems])], 2629 [case $enable_gnu_indirect_function in 2630 yes | no) ;; 2631 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function. 2632Valid choices are 'yes' and 'no'.]) ;; 2633 esac], 2634 [enable_gnu_indirect_function="$default_gnu_indirect_function"]) 2635 2636gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi` 2637AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif, 2638[Define if your system supports gnu indirect functions.]) 2639 2640 2641changequote(,)dnl 2642if test $in_tree_ld != yes ; then 2643 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q` 2644 if echo "$ld_ver" | grep GNU > /dev/null; then 2645 if test x"$ld_is_gold" = xyes; then 2646 # GNU gold --version looks like this: 2647 # 2648 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11 2649 # 2650 # We extract the binutils version which is more familiar and specific 2651 # than the gold version. 2652 ld_vers=`echo $ld_ver | sed -n \ 2653 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'` 2654 else 2655 # GNU ld --version looks like this: 2656 # 2657 # GNU ld (GNU Binutils) 2.21.51.20110225 2658 ld_vers=`echo $ld_ver | sed -n \ 2659 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'` 2660 fi 2661 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)\(-*\)\([01][0-9]\)\2\([0-3][0-9]\).*$,\1\3\4,p'` 2662 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'` 2663 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'` 2664 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'` 2665 else 2666 case "${target}" in 2667 *-*-solaris2*) 2668 # Solaris 2 ld -V output looks like this for a regular version: 2669 # 2670 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699 2671 # 2672 # but test versions add stuff at the end: 2673 # 2674 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10 2675 # 2676 # ld and ld.so.1 are guaranteed to be updated in lockstep, so ld version 2677 # numbers can be used in ld.so.1 feature checks even if a different 2678 # linker is configured. 2679 ld_ver=`$gcc_cv_ld -V 2>&1` 2680 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then 2681 ld_vers=`echo $ld_ver | sed -n \ 2682 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'` 2683 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'` 2684 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'` 2685 fi 2686 ;; 2687 esac 2688 fi 2689fi 2690changequote([,])dnl 2691 2692AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden, 2693[[if test $in_tree_ld = yes ; then 2694 gcc_cv_ld_hidden=no 2695 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \ 2696 && test $in_tree_ld_is_elf = yes; then 2697 gcc_cv_ld_hidden=yes 2698 fi 2699else 2700 gcc_cv_ld_hidden=yes 2701 if test x"$ld_is_gold" = xyes; then 2702 : 2703 elif echo "$ld_ver" | grep GNU > /dev/null; then 2704 case "${target}" in 2705 mmix-knuth-mmixware) 2706 # The linker emits by default mmo, not ELF, so "no" is appropriate. 2707 gcc_cv_ld_hidden=no 2708 ;; 2709 esac 2710 if test 0"$ld_date" -lt 20020404; then 2711 if test -n "$ld_date"; then 2712 # If there was date string, but was earlier than 2002-04-04, fail 2713 gcc_cv_ld_hidden=no 2714 elif test -z "$ld_vers"; then 2715 # If there was no date string nor ld version number, something is wrong 2716 gcc_cv_ld_hidden=no 2717 else 2718 test -z "$ld_vers_patch" && ld_vers_patch=0 2719 if test "$ld_vers_major" -lt 2; then 2720 gcc_cv_ld_hidden=no 2721 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then 2722 gcc_cv_ld_hidden="no" 2723 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then 2724 gcc_cv_ld_hidden=no 2725 fi 2726 fi 2727 fi 2728 else 2729 case "${target}" in 2730 *-*-aix[789]*) 2731 gcc_cv_ld_hidden=yes 2732 ;; 2733 *-*-darwin*) 2734 # Darwin ld has some visibility support. 2735 gcc_cv_ld_hidden=yes 2736 ;; 2737 hppa64*-*-hpux* | ia64*-*-hpux*) 2738 gcc_cv_ld_hidden=yes 2739 ;; 2740 *-*-solaris2.1[0-9]*) 2741 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but 2742 # .symbolic was only added in Solaris 9 12/02. 2743 gcc_cv_ld_hidden=yes 2744 ;; 2745 *) 2746 gcc_cv_ld_hidden=no 2747 ;; 2748 esac 2749 fi 2750fi]]) 2751libgcc_visibility=no 2752AC_SUBST(libgcc_visibility) 2753GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN]) 2754if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then 2755 libgcc_visibility=yes 2756 AC_DEFINE(HAVE_GAS_HIDDEN, 1, 2757 [Define if your assembler and linker support .hidden.]) 2758fi 2759 2760AC_MSG_CHECKING(linker read-only and read-write section mixing) 2761gcc_cv_ld_ro_rw_mix=unknown 2762if test $in_tree_ld = yes ; then 2763 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \ 2764 && test $in_tree_ld_is_elf = yes; then 2765 gcc_cv_ld_ro_rw_mix=read-write 2766 fi 2767elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then 2768 echo '.section myfoosect, "a"' > conftest1.s 2769 echo '.section myfoosect, "aw"' > conftest2.s 2770 echo '.byte 1' >> conftest2.s 2771 echo '.section myfoosect, "a"' > conftest3.s 2772 echo '.byte 0' >> conftest3.s 2773 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \ 2774 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \ 2775 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \ 2776 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \ 2777 conftest2.o conftest3.o > /dev/null 2>&1; then 2778 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \ 2779 | sed -e '/myfoosect/!d' -e N` 2780 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then 2781 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then 2782 gcc_cv_ld_ro_rw_mix=read-only 2783 else 2784 gcc_cv_ld_ro_rw_mix=read-write 2785 fi 2786 fi 2787 fi 2788changequote(,)dnl 2789 rm -f conftest.* conftest[123].* 2790changequote([,])dnl 2791fi 2792if test x$gcc_cv_ld_ro_rw_mix = xread-write; then 2793 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1, 2794 [Define if your linker links a mix of read-only 2795 and read-write sections into a read-write section.]) 2796fi 2797AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix) 2798 2799gcc_AC_INITFINI_ARRAY 2800 2801# Check if we have .[us]leb128, and support symbol arithmetic with it. 2802gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128, 2803 [elf,2,11,0],, 2804[ .data 2805 .uleb128 L2 - L1 2806L1: 2807 .uleb128 1280 2808 .sleb128 -1010 2809L2:], 2810[[# GAS versions before 2.11 do not support uleb128, 2811 # despite appearing to. 2812 # ??? There exists an elf-specific test that will crash 2813 # the assembler. Perhaps it's better to figure out whether 2814 # arbitrary sections are supported and try the test. 2815 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q` 2816 if echo "$as_ver" | grep GNU > /dev/null; then 2817 as_vers=`echo $as_ver | sed -n \ 2818 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'` 2819 as_major=`expr "$as_vers" : '\([0-9]*\)'` 2820 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'` 2821 if test $as_major -eq 2 && test $as_minor -lt 11 2822 then : 2823 else gcc_cv_as_leb128=yes 2824 fi 2825 fi]], 2826 [AC_DEFINE(HAVE_AS_LEB128, 1, 2827 [Define if your assembler supports .sleb128 and .uleb128.])], 2828 [AC_DEFINE(HAVE_AS_LEB128, 0, 2829 [Define if your assembler supports .sleb128 and .uleb128.])]) 2830 2831# Determine if an .eh_frame section is read-only. 2832gcc_fn_eh_frame_ro () { 2833 $gcc_cv_as $1 -o conftest.o conftest.s > /dev/null 2>&1 && \ 2834 $gcc_cv_objdump -h conftest.o 2>/dev/null | \ 2835 sed -e '/.eh_frame/!d' -e N | grep READONLY > /dev/null 2836} 2837 2838# Check if we have assembler support for unwind directives. 2839gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive, 2840 ,, 2841[ .text 2842 .cfi_startproc 2843 .cfi_offset 0, 0 2844 .cfi_same_value 1 2845 .cfi_def_cfa 1, 2 2846 .cfi_escape 1, 2, 3, 4, 5 2847 .cfi_endproc], 2848[case "$target" in 2849 *-*-solaris*) 2850 # If the linker used on Solaris (like Sun ld) isn't capable of merging 2851 # read-only and read-write sections, we need to make sure that the 2852 # assembler used emits read-write .eh_frame sections. 2853 if test "x$gcc_cv_ld_ro_rw_mix" = xread-write; then 2854 gcc_cv_as_cfi_directive=yes 2855 elif test "x$gcc_cv_objdump" = x; then 2856 # No objdump, err on the side of caution. 2857 gcc_cv_as_cfi_directive=no 2858 else 2859 if test x$gas = xyes; then 2860 as_32_opt="--32" 2861 as_64_opt="--64" 2862 else 2863 as_32_opt="-m32" 2864 as_64_opt="-m64" 2865 fi 2866 case "$target" in 2867 sparc*-*-solaris2.*) 2868 # On Solaris/SPARC, .eh_frame sections should always be read-write. 2869 if gcc_fn_eh_frame_ro $as_32_opt \ 2870 || gcc_fn_eh_frame_ro $as_64_opt; then 2871 gcc_cv_as_cfi_directive=no 2872 else 2873 gcc_cv_as_cfi_directive=yes 2874 fi 2875 ;; 2876 i?86-*-solaris2.* | x86_64-*-solaris2.*) 2877 # On Solaris/x86, make sure that GCC and assembler agree on using 2878 # read-only .eh_frame sections for 64-bit. 2879 if gcc_fn_eh_frame_ro $as_32_opt; then 2880 gcc_cv_as_cfi_directive=no 2881 elif gcc_fn_eh_frame_ro $as_64_opt; then 2882 gcc_cv_as_cfi_directive=yes 2883 else 2884 gcc_cv_as_cfi_directive=no 2885 fi 2886 ;; 2887 esac 2888 fi 2889 ;; 2890 *-*-*) 2891 gcc_cv_as_cfi_directive=yes 2892 ;; 2893esac]) 2894if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then 2895gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working, 2896 ,, 2897[ .text 2898 .cfi_startproc 2899 .cfi_adjust_cfa_offset 64 2900 .skip 75040, 0 2901 .cfi_adjust_cfa_offset 128 2902 .cfi_endproc], 2903[[ 2904if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \ 2905 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then 2906 gcc_cv_as_cfi_advance_working=yes 2907fi 2908]]) 2909else 2910 # no objdump, err on the side of caution 2911 gcc_cv_as_cfi_advance_working=no 2912fi 2913GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE) 2914AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE, 2915 [`if test $gcc_cv_as_cfi_directive = yes \ 2916 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`], 2917 [Define 0/1 if your assembler supports CFI directives.]) 2918 2919GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE) 2920gcc_GAS_CHECK_FEATURE([cfi personality directive], 2921 gcc_cv_as_cfi_personality_directive, ,, 2922[ .text 2923 .cfi_startproc 2924 .cfi_personality 0, symbol 2925 .cfi_endproc]) 2926AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE, 2927 [`if test $gcc_cv_as_cfi_personality_directive = yes; then echo 1; else echo 0; fi`], 2928 [Define 0/1 if your assembler supports .cfi_personality.]) 2929 2930gcc_GAS_CHECK_FEATURE([cfi sections directive], 2931 gcc_cv_as_cfi_sections_directive, ,, 2932[ .text 2933 .cfi_sections .debug_frame, .eh_frame 2934 .cfi_startproc 2935 .cfi_endproc], 2936[case $target_os in 2937 win32 | pe | cygwin* | mingw32*) 2938 # Need to check that we generated the correct relocation for the 2939 # .debug_frame section. This was fixed for binutils 2.21. 2940 gcc_cv_as_cfi_sections_directive=no 2941 if test "x$gcc_cv_objdump" != x; then 2942 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \ 2943 grep secrel > /dev/null; then 2944 gcc_cv_as_cfi_sections_directive=yes 2945 fi 2946 fi 2947 ;; 2948 *) 2949 gcc_cv_as_cfi_sections_directive=yes 2950 ;; 2951esac]) 2952GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE) 2953AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE, 2954 [`if test $gcc_cv_as_cfi_sections_directive = yes; then echo 1; else echo 0; fi`], 2955 [Define 0/1 if your assembler supports .cfi_sections.]) 2956 2957# GAS versions up to and including 2.11.0 may mis-optimize 2958# .eh_frame data. 2959gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame, 2960 [elf,2,12,0],, 2961[ .text 2962.LFB1: 2963 .4byte 0 2964.L1: 2965 .4byte 0 2966.LFE1: 2967 .section .eh_frame,"aw",@progbits 2968__FRAME_BEGIN__: 2969 .4byte .LECIE1-.LSCIE1 2970.LSCIE1: 2971 .4byte 0x0 2972 .byte 0x1 2973 .ascii "z\0" 2974 .byte 0x1 2975 .byte 0x78 2976 .byte 0x1a 2977 .byte 0x0 2978 .byte 0x4 2979 .4byte 1 2980 .p2align 1 2981.LECIE1: 2982.LSFDE1: 2983 .4byte .LEFDE1-.LASFDE1 2984.LASFDE1: 2985 .4byte .LASFDE1-__FRAME_BEGIN__ 2986 .4byte .LFB1 2987 .4byte .LFE1-.LFB1 2988 .byte 0x4 2989 .4byte .LFE1-.LFB1 2990 .byte 0x4 2991 .4byte .L1-.LFB1 2992.LEFDE1:], 2993[ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@. 2994cat > conftest.lit <<EOF 2995 0000 10000000 00000000 017a0001 781a0004 .........z..x... 2996 0010 01000000 12000000 18000000 00000000 ................ 2997 0020 08000000 04080000 0044 .........D @&t@ 2998EOF 2999cat > conftest.big <<EOF 3000 0000 00000010 00000000 017a0001 781a0004 .........z..x... 3001 0010 00000001 00000012 00000018 00000000 ................ 3002 0020 00000008 04000000 0844 .........D @&t@ 3003EOF 3004 # If the assembler didn't choke, and we can objdump, 3005 # and we got the correct data, then succeed. 3006 # The text in the here-document typically retains its unix-style line 3007 # endings, while the output of objdump will use host line endings. 3008 # Therefore, use diff -b for the comparisons. 3009 if test x$gcc_cv_objdump != x \ 3010 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \ 3011 | tail -3 > conftest.got \ 3012 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \ 3013 || diff -b conftest.big conftest.got > /dev/null 2>&1; } 3014 then 3015 gcc_cv_as_eh_frame=yes 3016 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then 3017 gcc_cv_as_eh_frame=buggy 3018 else 3019 # Uh oh, what do we do now? 3020 gcc_cv_as_eh_frame=no 3021 fi]) 3022 3023if test $gcc_cv_as_eh_frame = buggy; then 3024 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1, 3025 [Define if your assembler mis-optimizes .eh_frame data.]) 3026fi 3027 3028# Test if the assembler supports the section flag 'e' or #exclude for 3029# specifying an excluded section. 3030gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_e, 3031 [2,22,51], [--fatal-warnings], 3032 [.section foo1,"e" 3033 .byte 0,0,0,0]) 3034if test $gcc_cv_as_section_exclude_e = no; then 3035 case "${target}" in 3036 # Solaris as uses #exclude instead. 3037 *-*-solaris2*) 3038 case "${target}" in 3039 sparc*-*-solaris2*) 3040 conftest_s='.section "foo1", #exclude' 3041 ;; 3042 i?86-*-solaris2* | x86_64-*-solaris2*) 3043 conftest_s='.section foo1, #exclude' 3044 ;; 3045 esac 3046 ;; 3047 esac 3048 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_hash,,, 3049 [$conftest_s 3050 .byte 0,0,0,0]) 3051fi 3052AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE, 3053 [`if test $gcc_cv_as_section_exclude_e = yes || test $gcc_cv_as_section_exclude_hash = yes; then echo 1; else echo 0; fi`], 3054[Define if your assembler supports specifying the exclude section flag.]) 3055 3056gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge, 3057 [elf,2,12,0], [--fatal-warnings], 3058 [.section .rodata.str, "aMS", @progbits, 1]) 3059if test $gcc_cv_as_shf_merge = no; then 3060 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge, 3061 [elf,2,12,0], [--fatal-warnings], 3062 [.section .rodata.str, "aMS", %progbits, 1]) 3063fi 3064case "$target" in 3065 i?86-*-solaris2.10* | x86_64-*-solaris2.10*) 3066 # SHF_MERGE support in Solaris 10/x86 ld is broken. 3067 if test x"$gnu_ld" = xno; then 3068 gcc_cv_as_shf_merge=no 3069 fi 3070 ;; 3071esac 3072AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE, 3073 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`], 3074[Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.]) 3075 3076gcc_cv_ld_aligned_shf_merge=yes 3077case "$target" in 3078 # While Solaris 10/SPARC ld isn't affected, disable to avoid problems 3079 # relinking on Solaris 11 < 11.4. 3080 sparc*-*-solaris2.10*) 3081 if test x"$gnu_ld" = xno; then 3082 gcc_cv_ld_aligned_shf_merge=no 3083 fi 3084 ;; 3085 # SHF_MERGE support is broken in Solaris ld up to Solaris 11.3/SPARC for 3086 # alignment > 1. 3087 sparc*-*-solaris2.11*) 3088 if test x"$gnu_ld" = xno \ 3089 && test "$ld_vers_major" -lt 2 && test "$ld_vers_minor" -lt 3159; then 3090 gcc_cv_ld_aligned_shf_merge=no 3091 fi 3092 ;; 3093esac 3094AC_DEFINE_UNQUOTED(HAVE_LD_ALIGNED_SHF_MERGE, 3095 [`if test $gcc_cv_ld_aligned_shf_merge = yes; then echo 1; else echo 0; fi`], 3096[Define 0/1 if your linker supports the SHF_MERGE flag with section alignment > 1.]) 3097 3098gcc_GAS_CHECK_FEATURE([stabs directive], gcc_cv_as_stabs_directive, ,, 3099[.stabs "gcc2_compiled.",60,0,0,0],, 3100[AC_DEFINE(HAVE_AS_STABS_DIRECTIVE, 1, 3101 [Define if your assembler supports .stabs.])]) 3102 3103gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)], 3104 gcc_cv_as_comdat_group, 3105 [elf,2,16,0], [--fatal-warnings], 3106 [.section .text,"axG",@progbits,.foo,comdat]) 3107if test $gcc_cv_as_comdat_group = yes; then 3108 gcc_cv_as_comdat_group_percent=no 3109 gcc_cv_as_comdat_group_group=no 3110else 3111 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)], 3112 gcc_cv_as_comdat_group_percent, 3113 [elf,2,16,0], [--fatal-warnings], 3114 [.section .text,"axG",%progbits,.foo,comdat]) 3115 if test $gcc_cv_as_comdat_group_percent = yes; then 3116 gcc_cv_as_comdat_group_group=no 3117 else 3118 case "${target}" in 3119 # Sun as uses a completely different syntax. 3120 *-*-solaris2*) 3121 case "${target}" in 3122 sparc*-*-solaris2*) 3123 conftest_s=' 3124 .group foo,".text%foo",#comdat 3125 .section ".text%foo", #alloc,#execinstr,#progbits 3126 .globl foo 3127 foo: 3128 ' 3129 ;; 3130 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*) 3131 conftest_s=' 3132 .group foo,.text%foo,#comdat 3133 .section .text%foo, "ax", @progbits 3134 .globl foo 3135 foo: 3136 ' 3137 ;; 3138 esac 3139 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)], 3140 gcc_cv_as_comdat_group_group, 3141 ,, [$conftest_s]) 3142 ;; 3143 esac 3144 if test -z "${gcc_cv_as_comdat_group_group+set}"; then 3145 gcc_cv_as_comdat_group_group=no 3146 fi 3147 fi 3148fi 3149if test x"$ld_is_gold" = xyes; then 3150 comdat_group=yes 3151elif test $in_tree_ld = yes ; then 3152 comdat_group=no 3153 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \ 3154 && test $in_tree_ld_is_elf = yes; then 3155 comdat_group=yes 3156 fi 3157elif echo "$ld_ver" | grep GNU > /dev/null; then 3158 comdat_group=yes 3159 if test 0"$ld_date" -lt 20050308; then 3160 if test -n "$ld_date"; then 3161 # If there was date string, but was earlier than 2005-03-08, fail 3162 comdat_group=no 3163 elif test "$ld_vers_major" -lt 2; then 3164 comdat_group=no 3165 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then 3166 comdat_group=no 3167 fi 3168 fi 3169else 3170changequote(,)dnl 3171 case "${target}" in 3172 *-*-solaris2.1[1-9]*) 3173 comdat_group=no 3174 # Sun ld has COMDAT group support since Solaris 9, but it doesn't 3175 # interoperate with GNU as until Solaris 11 build 130, i.e. ld 3176 # version 1.688. 3177 # 3178 # If using Sun as for COMDAT group as emitted by GCC, one needs at 3179 # least ld version 1.2267. 3180 if test "$ld_vers_major" -gt 1; then 3181 comdat_group=yes 3182 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then 3183 comdat_group=yes 3184 elif test "$ld_vers_minor" -ge 2267; then 3185 comdat_group=yes 3186 fi 3187 ;; 3188 *) 3189 # Assume linkers other than GNU ld don't support COMDAT group. 3190 comdat_group=no 3191 ;; 3192 esac 3193changequote([,])dnl 3194fi 3195# Allow overriding the automatic COMDAT group tests above. 3196AC_ARG_ENABLE(comdat, 3197 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])], 3198 [comdat_group="$enable_comdat"]) 3199if test $comdat_group = no; then 3200 gcc_cv_as_comdat_group=no 3201 gcc_cv_as_comdat_group_percent=no 3202 gcc_cv_as_comdat_group_group=no 3203fi 3204AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP, 3205 [`if test $gcc_cv_as_comdat_group = yes \ 3206 || test $gcc_cv_as_comdat_group_percent = yes \ 3207 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`], 3208[Define 0/1 if your assembler and linker support COMDAT groups.]) 3209 3210# Restrict this test to Solaris/x86: other targets define this statically. 3211case "${target}" in 3212 i?86-*-solaris2* | x86_64-*-solaris2*) 3213 AC_MSG_CHECKING(support for hidden thunks in linkonce sections) 3214 if test $in_tree_ld = yes || echo "$ld_ver" | grep GNU > /dev/null; then 3215 hidden_linkonce=yes 3216 else 3217 case "${target}" in 3218 # Full support for hidden thunks in linkonce sections only appeared in 3219 # Solaris 11/OpenSolaris. 3220 *-*-solaris2.1[[1-9]]*) 3221 hidden_linkonce=yes 3222 ;; 3223 *) 3224 hidden_linkonce=no 3225 ;; 3226 esac 3227 fi 3228 AC_MSG_RESULT($hidden_linkonce) 3229 AC_DEFINE_UNQUOTED(USE_HIDDEN_LINKONCE, 3230 [`if test $hidden_linkonce = yes; then echo 1; else echo 0; fi`], 3231 [Define 0/1 if your linker supports hidden thunks in linkonce sections.]) 3232 ;; 3233esac 3234 3235gcc_GAS_CHECK_FEATURE([line table is_stmt support], 3236 gcc_cv_as_is_stmt, 3237 [2,16,92],, 3238[ .text 3239 .file 1 "conf.c" 3240 .loc 1 1 0 is_stmt 1],, 3241[AC_DEFINE(HAVE_GAS_LOC_STMT, 1, 3242 [Define if your assembler supports the .loc is_stmt sub-directive.])]) 3243 3244gcc_GAS_CHECK_FEATURE([line table discriminator support], 3245 gcc_cv_as_discriminator, 3246 [2,19,51],, 3247[ .text 3248 .file 1 "conf.c" 3249 .loc 1 1 0 discriminator 1],, 3250[AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1, 3251 [Define if your assembler supports the .loc discriminator sub-directive.])]) 3252 3253# Thread-local storage - the check is heavily parameterized. 3254conftest_s= 3255tls_first_major= 3256tls_first_minor= 3257tls_as_opt= 3258case "$target" in 3259changequote(,)dnl 3260 alpha*-*-*) 3261 conftest_s=' 3262 .section ".tdata","awT",@progbits 3263foo: .long 25 3264 .text 3265 ldq $27,__tls_get_addr($29) !literal!1 3266 lda $16,foo($29) !tlsgd!1 3267 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1 3268 ldq $27,__tls_get_addr($29) !literal!2 3269 lda $16,foo($29) !tlsldm!2 3270 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2 3271 ldq $1,foo($29) !gotdtprel 3272 ldah $2,foo($29) !dtprelhi 3273 lda $3,foo($2) !dtprello 3274 lda $4,foo($29) !dtprel 3275 ldq $1,foo($29) !gottprel 3276 ldah $2,foo($29) !tprelhi 3277 lda $3,foo($2) !tprello 3278 lda $4,foo($29) !tprel' 3279 tls_first_major=2 3280 tls_first_minor=13 3281 tls_as_opt=--fatal-warnings 3282 ;; 3283 arc*-*-*) 3284 conftest_s=' 3285 add_s r0,r0, @foo@tpoff' 3286 tls_first_major=2 3287 tls_first_minor=23 3288 ;; 3289 cris-*-*|crisv32-*-*) 3290 conftest_s=' 3291 .section ".tdata","awT",@progbits 3292x: .long 25 3293 .text 3294 move.d x:IE,$r10 3295 nop' 3296 tls_first_major=2 3297 tls_first_minor=20 3298 tls_as_opt=--fatal-warnings 3299 ;; 3300 frv*-*-*) 3301 conftest_s=' 3302 .section ".tdata","awT",@progbits 3303x: .long 25 3304 .text 3305 call #gettlsoff(x)' 3306 tls_first_major=2 3307 tls_first_minor=14 3308 ;; 3309 hppa*-*-linux*) 3310 conftest_s=' 3311t1: .reg %r20 3312t2: .reg %r21 3313gp: .reg %r19 3314 .section ".tdata","awT",@progbits 3315foo: .long 25 3316 .text 3317 .align 4 3318 addil LT%foo-$tls_gdidx$,gp 3319 ldo RT%foo-$tls_gdidx$(%r1),%arg0 3320 b __tls_get_addr 3321 nop 3322 addil LT%foo-$tls_ldidx$,gp 3323 b __tls_get_addr 3324 ldo RT%foo-$tls_ldidx$(%r1),%arg0 3325 addil LR%foo-$tls_dtpoff$,%ret0 3326 ldo RR%foo-$tls_dtpoff$(%r1),%t1 3327 mfctl %cr27,%t1 3328 addil LT%foo-$tls_ieoff$,gp 3329 ldw RT%foo-$tls_ieoff$(%r1),%t2 3330 add %t1,%t2,%t3 3331 mfctl %cr27,%t1 3332 addil LR%foo-$tls_leoff$,%t1 3333 ldo RR%foo-$tls_leoff$(%r1),%t2' 3334 tls_first_major=2 3335 tls_first_minor=15 3336 tls_as_opt=--fatal-warnings 3337 ;; 3338 arm*-*-*) 3339 conftest_s=' 3340 .section ".tdata","awT",%progbits 3341foo: .long 25 3342 .text 3343.word foo(gottpoff) 3344.word foo(tpoff) 3345.word foo(tlsgd) 3346.word foo(tlsldm) 3347.word foo(tlsldo)' 3348 tls_first_major=2 3349 tls_first_minor=17 3350 ;; 3351 i[34567]86-*-* | x86_64-*-*) 3352 case "$target" in 3353 i[34567]86-*-solaris2.* | x86_64-*-solaris2.1[0-9]*) 3354 on_solaris=yes 3355 ;; 3356 *) 3357 on_solaris=no 3358 ;; 3359 esac 3360 if test x$on_solaris = xyes && test x$gas_flag = xno; then 3361 conftest_s=' 3362 .section .tdata,"awt",@progbits' 3363 tls_first_major=0 3364 tls_first_minor=0 3365 tls_section_flag=t 3366changequote([,])dnl 3367 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't', 3368[Define to the flag used to mark TLS sections if the default (`T') doesn't work.]) 3369changequote(,)dnl 3370 else 3371 conftest_s=' 3372 .section ".tdata","awT",@progbits' 3373 tls_first_major=2 3374 tls_first_minor=14 3375 tls_section_flag=T 3376 tls_as_opt="--fatal-warnings" 3377 fi 3378 case "$target" in 3379 i[34567]86-*-*) 3380 conftest_s="$conftest_s 3381foo: .long 25 3382 .text 3383 movl %gs:0, %eax 3384 leal foo@tlsgd(,%ebx,1), %eax 3385 leal foo@tlsldm(%ebx), %eax 3386 leal foo@dtpoff(%eax), %edx 3387 movl foo@gottpoff(%ebx), %eax 3388 subl foo@gottpoff(%ebx), %eax 3389 addl foo@gotntpoff(%ebx), %eax 3390 movl foo@indntpoff, %eax 3391 movl \$foo@tpoff, %eax 3392 subl \$foo@tpoff, %eax 3393 leal foo@ntpoff(%ecx), %eax" 3394 ;; 3395 x86_64-*-*) 3396 if test x$on_solaris = xyes; then 3397 case $gas_flag in 3398 yes) tls_as_opt="$tls_as_opt --64" ;; 3399 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;; 3400 esac 3401 fi 3402 conftest_s="$conftest_s 3403foo: .long 25 3404 .text 3405 movq %fs:0, %rax 3406 leaq foo@tlsgd(%rip), %rdi 3407 leaq foo@tlsld(%rip), %rdi 3408 leaq foo@dtpoff(%rax), %rdx 3409 movq foo@gottpoff(%rip), %rax 3410 movq \$foo@tpoff, %rax" 3411 ;; 3412 esac 3413 ;; 3414 ia64-*-*) 3415 conftest_s=' 3416 .section ".tdata","awT",@progbits 3417foo: data8 25 3418 .text 3419 addl r16 = @ltoff(@dtpmod(foo#)), gp 3420 addl r17 = @ltoff(@dtprel(foo#)), gp 3421 addl r18 = @ltoff(@tprel(foo#)), gp 3422 addl r19 = @dtprel(foo#), gp 3423 adds r21 = @dtprel(foo#), r13 3424 movl r23 = @dtprel(foo#) 3425 addl r20 = @tprel(foo#), gp 3426 adds r22 = @tprel(foo#), r13 3427 movl r24 = @tprel(foo#)' 3428 tls_first_major=2 3429 tls_first_minor=13 3430 tls_as_opt=--fatal-warnings 3431 ;; 3432 microblaze*-*-*) 3433 conftest_s=' 3434 .section .tdata,"awT",@progbits 3435x: 3436 .word 2 3437 .text 3438 addik r5,r20,x@TLSGD 3439 addik r5,r20,x@TLSLDM' 3440 tls_first_major=2 3441 tls_first_minor=20 3442 tls_as_opt='--fatal-warnings' 3443 ;; 3444 mips*-*-*) 3445 conftest_s=' 3446 .section .tdata,"awT",@progbits 3447x: 3448 .word 2 3449 .text 3450 addiu $4, $28, %tlsgd(x) 3451 addiu $4, $28, %tlsldm(x) 3452 lui $4, %dtprel_hi(x) 3453 addiu $4, $4, %dtprel_lo(x) 3454 lw $4, %gottprel(x)($28) 3455 lui $4, %tprel_hi(x) 3456 addiu $4, $4, %tprel_lo(x)' 3457 tls_first_major=2 3458 tls_first_minor=16 3459 tls_as_opt='-32 --fatal-warnings' 3460 ;; 3461 m68k-*-*) 3462 conftest_s=' 3463 .section .tdata,"awT",@progbits 3464x: 3465 .word 2 3466 .text 3467foo: 3468 move.l x@TLSGD(%a5),%a0 3469 move.l x@TLSLDM(%a5),%a0 3470 move.l x@TLSLDO(%a5),%a0 3471 move.l x@TLSIE(%a5),%a0 3472 move.l x@TLSLE(%a5),%a0' 3473 tls_first_major=2 3474 tls_first_minor=19 3475 tls_as_opt='--fatal-warnings' 3476 ;; 3477 nios2-*-*) 3478 conftest_s=' 3479 .section ".tdata","awT",@progbits' 3480 tls_first_major=2 3481 tls_first_minor=23 3482 tls_as_opt="--fatal-warnings" 3483 ;; 3484 aarch64*-*-*) 3485 conftest_s=' 3486 .section ".tdata","awT",%progbits 3487foo: .long 25 3488 .text 3489 adrp x0, :tlsgd:x 3490 add x0, x0, #:tlsgd_lo12:x 3491 bl __tls_get_addr 3492 nop' 3493 tls_first_major=2 3494 tls_first_minor=20 3495 tls_as_opt='--fatal-warnings' 3496 ;; 3497 or1k*-*-*) 3498 conftest_s=' 3499 .section ".tdata","awT",@progbits 3500foo: .long 25 3501 .text 3502 l.movhi r3, tpoffha(foo) 3503 l.add r3, r3, r10 3504 l.lwz r4, tpofflo(foo)(r3)' 3505 tls_first_major=2 3506 tls_first_minor=30 3507 tls_as_opt=--fatal-warnings 3508 ;; 3509 powerpc-ibm-aix*) 3510 conftest_s=' 3511 .extern __get_tpointer 3512 .toc 3513LC..1: 3514 .tc a[TC],a[TL]@le 3515 .csect .text[PR] 3516.tlstest: 3517 lwz 9,LC..1(2) 3518 bla __get_tpointer 3519 lwzx 3,9,3 3520 .globl a 3521 .csect a[TL],4 3522a: 3523 .space 4' 3524 tls_first_major=0 3525 tls_first_minor=0 3526 ;; 3527 powerpc64*-*-*) 3528 conftest_s=' 3529 .section ".tdata","awT",@progbits 3530 .align 3 3531ld0: .space 8 3532ld1: .space 8 3533x1: .space 8 3534x2: .space 8 3535x3: .space 8 3536 .text 3537 addi 3,2,ld0@got@tlsgd 3538 bl .__tls_get_addr 3539 nop 3540 addi 3,2,ld1@toc 3541 bl .__tls_get_addr 3542 nop 3543 addi 3,2,x1@got@tlsld 3544 bl .__tls_get_addr 3545 nop 3546 addi 9,3,x1@dtprel 3547 bl .__tls_get_addr 3548 nop 3549 addis 9,3,x2@dtprel@ha 3550 addi 9,9,x2@dtprel@l 3551 bl .__tls_get_addr 3552 nop 3553 ld 9,x3@got@dtprel(2) 3554 add 9,9,3 3555 bl .__tls_get_addr 3556 nop' 3557 tls_first_major=2 3558 tls_first_minor=14 3559 tls_as_opt="-a64 --fatal-warnings" 3560 ;; 3561 powerpc*-*-*) 3562 conftest_s=' 3563 .section ".tdata","awT",@progbits 3564 .align 2 3565ld0: .space 4 3566ld1: .space 4 3567x1: .space 4 3568x2: .space 4 3569x3: .space 4 3570 .text 3571 addi 3,31,ld0@got@tlsgd 3572 bl __tls_get_addr 3573 addi 3,31,x1@got@tlsld 3574 bl __tls_get_addr 3575 addi 9,3,x1@dtprel 3576 addis 9,3,x2@dtprel@ha 3577 addi 9,9,x2@dtprel@l 3578 lwz 9,x3@got@tprel(31) 3579 add 9,9,x@tls 3580 addi 9,2,x1@tprel 3581 addis 9,2,x2@tprel@ha 3582 addi 9,9,x2@tprel@l' 3583 tls_first_major=2 3584 tls_first_minor=14 3585 tls_as_opt="-a32 --fatal-warnings" 3586 ;; 3587 riscv*-*-*) 3588 conftest_s=' 3589 .section .tdata,"awT",@progbits 3590x: .word 2 3591 .text 3592 la.tls.gd a0,x 3593 call __tls_get_addr' 3594 tls_first_major=2 3595 tls_first_minor=21 3596 tls_as_opt='--fatal-warnings' 3597 ;; 3598 s390-*-*) 3599 conftest_s=' 3600 .section ".tdata","awT",@progbits 3601foo: .long 25 3602 .text 3603 .long foo@TLSGD 3604 .long foo@TLSLDM 3605 .long foo@DTPOFF 3606 .long foo@NTPOFF 3607 .long foo@GOTNTPOFF 3608 .long foo@INDNTPOFF 3609 l %r1,foo@GOTNTPOFF(%r12) 3610 l %r1,0(%r1):tls_load:foo 3611 bas %r14,0(%r1,%r13):tls_gdcall:foo 3612 bas %r14,0(%r1,%r13):tls_ldcall:foo' 3613 tls_first_major=2 3614 tls_first_minor=14 3615 tls_as_opt="-m31 --fatal-warnings" 3616 ;; 3617 s390x-*-*) 3618 conftest_s=' 3619 .section ".tdata","awT",@progbits 3620foo: .long 25 3621 .text 3622 .quad foo@TLSGD 3623 .quad foo@TLSLDM 3624 .quad foo@DTPOFF 3625 .quad foo@NTPOFF 3626 .quad foo@GOTNTPOFF 3627 lg %r1,foo@GOTNTPOFF(%r12) 3628 larl %r1,foo@INDNTPOFF 3629 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo 3630 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo' 3631 tls_first_major=2 3632 tls_first_minor=14 3633 tls_as_opt="-m64 -Aesame --fatal-warnings" 3634 ;; 3635 sh-*-* | sh[123456789lbe]*-*-*) 3636 conftest_s=' 3637 .section ".tdata","awT",@progbits 3638foo: .long 25 3639 .text 3640 .long foo@TLSGD 3641 .long foo@TLSLDM 3642 .long foo@DTPOFF 3643 .long foo@GOTTPOFF 3644 .long foo@TPOFF' 3645 tls_first_major=2 3646 tls_first_minor=13 3647 tls_as_opt=--fatal-warnings 3648 ;; 3649 sparc*-*-*) 3650 case "$target" in 3651 sparc*-sun-solaris2.*) 3652 on_solaris=yes 3653 ;; 3654 *) 3655 on_solaris=no 3656 ;; 3657 esac 3658 if test x$on_solaris = xyes && test x$gas_flag = xno; then 3659 conftest_s=' 3660 .section ".tdata",#alloc,#write,#tls' 3661 tls_first_major=0 3662 tls_first_minor=0 3663 else 3664 conftest_s=' 3665 .section ".tdata","awT",@progbits' 3666 tls_first_major=2 3667 tls_first_minor=14 3668 tls_as_opt="-32 --fatal-warnings" 3669 fi 3670 conftest_s="$conftest_s 3671foo: .long 25 3672 .text 3673 sethi %tgd_hi22(foo), %o0 3674 add %o0, %tgd_lo10(foo), %o1 3675 add %l7, %o1, %o0, %tgd_add(foo) 3676 call __tls_get_addr, %tgd_call(foo) 3677 sethi %tldm_hi22(foo), %l1 3678 add %l1, %tldm_lo10(foo), %l2 3679 add %l7, %l2, %o0, %tldm_add(foo) 3680 call __tls_get_addr, %tldm_call(foo) 3681 sethi %tldo_hix22(foo), %l3 3682 xor %l3, %tldo_lox10(foo), %l4 3683 add %o0, %l4, %l5, %tldo_add(foo) 3684 sethi %tie_hi22(foo), %o3 3685 add %o3, %tie_lo10(foo), %o3 3686 ld [%l7 + %o3], %o2, %tie_ld(foo) 3687 add %g7, %o2, %o4, %tie_add(foo) 3688 sethi %tle_hix22(foo), %l1 3689 xor %l1, %tle_lox10(foo), %o5 3690 ld [%g7 + %o5], %o1" 3691 ;; 3692 tilepro*-*-*) 3693 conftest_s=' 3694 .section ".tdata","awT",@progbits 3695foo: .long 25 3696 .text 3697 addli r0, zero, tls_gd(foo) 3698 auli r0, zero, tls_gd_ha16(foo) 3699 addli r0, r0, tls_gd_lo16(foo) 3700 jal __tls_get_addr 3701 addli r0, zero, tls_ie(foo) 3702 auli r0, r0, tls_ie_ha16(foo) 3703 addli r0, r0, tls_ie_lo16(foo)' 3704 tls_first_major=2 3705 tls_first_minor=22 3706 tls_as_opt="--fatal-warnings" 3707 ;; 3708 tilegx*-*-*) 3709 conftest_s=' 3710 .section ".tdata","awT",@progbits 3711foo: .long 25 3712 .text 3713 shl16insli r0, zero, hw0_last_tls_gd(foo) 3714 shl16insli r0, zero, hw1_last_tls_gd(foo) 3715 shl16insli r0, r0, hw0_tls_gd(foo) 3716 jal __tls_get_addr 3717 shl16insli r0, zero, hw1_last_tls_ie(foo) 3718 shl16insli r0, r0, hw0_tls_ie(foo)' 3719 tls_first_major=2 3720 tls_first_minor=22 3721 tls_as_opt="--fatal-warnings" 3722 ;; 3723 xtensa*-*-*) 3724 conftest_s=' 3725 .section ".tdata","awT",@progbits 3726foo: .long 25 3727 .text 3728 movi a8, foo@TLSFUNC 3729 movi a10, foo@TLSARG 3730 callx8.tls a8, foo@TLSCALL' 3731 tls_first_major=2 3732 tls_first_minor=19 3733 ;; 3734changequote([,])dnl 3735esac 3736set_have_as_tls=no 3737if test "x$enable_tls" = xno ; then 3738 : # TLS explicitly disabled. 3739elif test "x$enable_tls" = xyes ; then 3740 set_have_as_tls=yes # TLS explicitly enabled. 3741elif test -z "$tls_first_major"; then 3742 : # If we don't have a check, assume no support. 3743else 3744 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls, 3745 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],, 3746 [set_have_as_tls=yes]) 3747fi 3748if test $set_have_as_tls = yes ; then 3749 AC_DEFINE(HAVE_AS_TLS, 1, 3750 [Define if your assembler and linker support thread-local storage.]) 3751fi 3752 3753# Target-specific assembler checks. 3754 3755AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option) 3756gcc_cv_ld_static_dynamic=no 3757gcc_cv_ld_static_option='-Bstatic' 3758gcc_cv_ld_dynamic_option='-Bdynamic' 3759if test $in_tree_ld = yes ; then 3760 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then 3761 gcc_cv_ld_static_dynamic=yes 3762 fi 3763elif test x$gcc_cv_ld != x; then 3764 # Check if linker supports -Bstatic/-Bdynamic option 3765 if $gcc_cv_ld --help 2>&1 | grep -- -Bstatic > /dev/null \ 3766 && $gcc_cv_ld --help 2>&1 | grep -- -Bdynamic > /dev/null; then 3767 gcc_cv_ld_static_dynamic=yes 3768 else 3769 case "$target" in 3770 # AIX ld uses -b flags 3771 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*) 3772 gcc_cv_ld_static_dynamic=yes 3773 gcc_cv_ld_static_option="-bstatic" 3774 gcc_cv_ld_dynamic_option="-bdynamic" 3775 ;; 3776 # HP-UX ld uses -a flags to select between shared and archive. 3777 *-*-hpux*) 3778 if test x"$gnu_ld" = xno; then 3779 gcc_cv_ld_static_dynamic=yes 3780 gcc_cv_ld_static_option="-aarchive_shared" 3781 gcc_cv_ld_dynamic_option="-adefault" 3782 fi 3783 ;; 3784 # Solaris 2 ld always supports -Bstatic/-Bdynamic. 3785 *-*-solaris2*) 3786 gcc_cv_ld_static_dynamic=yes 3787 ;; 3788 esac 3789 fi 3790fi 3791if test x"$gcc_cv_ld_static_dynamic" = xyes; then 3792 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1, 3793[Define if your linker supports -Bstatic/-Bdynamic or equivalent options.]) 3794 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option", 3795[Define to the linker option to disable use of shared objects.]) 3796 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option", 3797[Define to the linker option to enable use of shared objects.]) 3798fi 3799AC_MSG_RESULT($gcc_cv_ld_static_dynamic) 3800 3801AC_MSG_CHECKING(linker --version-script option) 3802gcc_cv_ld_version_script=no 3803ld_version_script_option='' 3804if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then 3805 gcc_cv_ld_version_script=yes 3806 ld_version_script_option='--version-script' 3807elif test x$gcc_cv_ld != x; then 3808 case "$target" in 3809 # Solaris 2 ld always supports -M. It also supports a subset of 3810 # --version-script since Solaris 11.4, but requires 3811 # -z gnu-version-script-compat to activate. 3812 *-*-solaris2*) 3813 gcc_cv_ld_version_script=yes 3814 ld_version_script_option='-M' 3815 ;; 3816 esac 3817fi 3818# Don't AC_DEFINE result, only used in jit/Make-lang.in so far. 3819AC_MSG_RESULT($gcc_cv_ld_version_script) 3820AC_SUBST(ld_version_script_option) 3821 3822AC_MSG_CHECKING(linker soname option) 3823gcc_cv_ld_soname=no 3824if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then 3825 gcc_cv_ld_soname=yes 3826 ld_soname_option='-soname' 3827elif test x$gcc_cv_ld != x; then 3828 case "$target" in 3829 *-*-darwin*) 3830 gcc_cv_ld_soname=yes 3831 ld_soname_option='-install_name' 3832 ;; 3833 # Solaris 2 ld always supports -h. It also supports --soname for GNU 3834 # ld compatiblity since some Solaris 10 update. 3835 *-*-solaris2*) 3836 gcc_cv_ld_soname=yes 3837 ld_soname_option='-h' 3838 ;; 3839 esac 3840fi 3841# Don't AC_DEFINE result, only used in jit/Make-lang.in so far. 3842AC_MSG_RESULT($gcc_cv_ld_soname) 3843AC_SUBST(ld_soname_option) 3844 3845if test x"$demangler_in_ld" = xyes; then 3846 AC_MSG_CHECKING(linker --demangle support) 3847 gcc_cv_ld_demangle=no 3848 if test $in_tree_ld = yes; then 3849 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \ 3850 gcc_cv_ld_demangle=yes 3851 fi 3852 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then 3853 # Check if the GNU linker supports --demangle option 3854 if $gcc_cv_ld --help 2>&1 | grep no-demangle > /dev/null; then 3855 gcc_cv_ld_demangle=yes 3856 fi 3857 fi 3858 if test x"$gcc_cv_ld_demangle" = xyes; then 3859 AC_DEFINE(HAVE_LD_DEMANGLE, 1, 3860[Define if your linker supports --demangle option.]) 3861 fi 3862 AC_MSG_RESULT($gcc_cv_ld_demangle) 3863fi 3864 3865AC_MSG_CHECKING(linker plugin support) 3866gcc_cv_lto_plugin=0 3867if test -f liblto_plugin.la; then 3868 save_ld_ver="$ld_ver" 3869 save_ld_vers_major="$ld_vers_major" 3870 save_ld_vers_minor="$ld_vers_minor" 3871 save_ld_is_gold="$ld_is_gold" 3872 3873 ld_is_gold=no 3874 3875 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then 3876 ld_ver="GNU ld" 3877 # FIXME: ld_is_gold? 3878 ld_vers_major="$gcc_cv_gld_major_version" 3879 ld_vers_minor="$gcc_cv_gld_minor_version" 3880 else 3881 # Determine plugin linker version. 3882 # FIXME: Partial duplicate from above, generalize. 3883changequote(,)dnl 3884 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q` 3885 if echo "$ld_ver" | grep GNU > /dev/null; then 3886 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then 3887 ld_is_gold=yes 3888 ld_vers=`echo $ld_ver | sed -n \ 3889 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'` 3890 else 3891 ld_vers=`echo $ld_ver | sed -n \ 3892 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'` 3893 fi 3894 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'` 3895 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'` 3896 fi 3897changequote([,])dnl 3898 fi 3899 3900 # Determine plugin support. 3901 if echo "$ld_ver" | grep GNU > /dev/null; then 3902 # Require GNU ld or gold 2.21+ for plugin support by default. 3903 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then 3904 gcc_cv_lto_plugin=2 3905 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20. 3906 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then 3907 gcc_cv_lto_plugin=1 3908 fi 3909 fi 3910 3911 ld_ver="$save_ld_ver" 3912 ld_vers_major="$save_ld_vers_major" 3913 ld_vers_minor="$save_ld_vers_minor" 3914 ld_is_gold="$save_ld_is_gold" 3915fi 3916AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin, 3917 [Define to the level of your linker's plugin support.]) 3918AC_MSG_RESULT($gcc_cv_lto_plugin) 3919 3920# Target OS-specific assembler checks. 3921 3922case "$target_os" in 3923 darwin*) 3924 gcc_GAS_CHECK_FEATURE([-mmacosx-version-min option], 3925 gcc_cv_as_mmacosx_version_min,, 3926 [-mmacosx-version-min=10.1], [.text],, 3927 [AC_DEFINE(HAVE_AS_MMACOSX_VERSION_MIN_OPTION, 1, 3928 [Define if your Mac OS X assembler supports the -mmacos-version-min option.])]) 3929 ;; 3930esac 3931 3932# Target CPU-specific assembler checks. 3933 3934case "$target" in 3935 aarch64*-*-*) 3936 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,, 3937 [-mabi=lp64], [.text],,,) 3938 if test x$gcc_cv_as_aarch64_mabi = xyes; then 3939 AC_DEFINE(HAVE_AS_MABI_OPTION, 1, 3940 [Define if your assembler supports the -mabi option.]) 3941 else 3942 if test x$with_abi = xilp32; then 3943 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\ 3944 Upgrade the Assembler.]) 3945 fi 3946 if test x"$with_multilib_list" = xdefault; then 3947 TM_MULTILIB_CONFIG=lp64 3948 else 3949 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'` 3950 for aarch64_multilib in ${aarch64_multilibs}; do 3951 case ${aarch64_multilib} in 3952 ilp32) 3953 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\ 3954 Upgrade the Assembler.]) 3955 ;; 3956 *) 3957 ;; 3958 esac 3959 done 3960 fi 3961 fi 3962 # Check if we have binutils support for relocations types needed by -fpic 3963 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,, 3964 [ 3965 .text 3966 ldr x0, [[x2, #:gotpage_lo15:globalsym]] 3967 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1, 3968 [Define if your assembler supports relocs needed by -fpic.])]) 3969 # Enable Branch Target Identification Mechanism and Return Address 3970 # Signing by default. 3971 AC_ARG_ENABLE(standard-branch-protection, 3972 [ 3973AS_HELP_STRING([--enable-standard-branch-protection], 3974 [enable Branch Target Identification Mechanism and Return Address Signing by default for AArch64]) 3975AS_HELP_STRING([--disable-standard-branch-protection], 3976 [disable Branch Target Identification Mechanism and Return Address Signing by default for AArch64]) 3977 ], 3978 [ 3979 case $enableval in 3980 yes) 3981 tm_defines="${tm_defines} TARGET_ENABLE_BTI=1 TARGET_ENABLE_PAC_RET=1" 3982 ;; 3983 no) 3984 ;; 3985 *) 3986 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-standard-branch-protection.\ 3987 Valid choices are 'yes' and 'no'.]) 3988 ;; 3989 esac 3990 ], 3991 []) 3992 # Enable default workaround for AArch64 Cortex-A53 erratum 835769. 3993 AC_ARG_ENABLE(fix-cortex-a53-835769, 3994 [ 3995AS_HELP_STRING([--enable-fix-cortex-a53-835769], 3996 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default]) 3997AS_HELP_STRING([--disable-fix-cortex-a53-835769], 3998 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default]) 3999 ], 4000 [ 4001 case $enableval in 4002 yes) 4003 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1" 4004 ;; 4005 no) 4006 ;; 4007 *) 4008 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\ 4009 Valid choices are 'yes' and 'no'.]) 4010 ;; 4011 4012 esac 4013 ], 4014 []) 4015 # Enable default workaround for AArch64 Cortex-A53 erratum 843419. 4016 AC_ARG_ENABLE(fix-cortex-a53-843419, 4017 [ 4018AS_HELP_STRING([--enable-fix-cortex-a53-843419], 4019 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default]) 4020AS_HELP_STRING([--disable-fix-cortex-a53-843419], 4021 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default]) 4022 ], 4023 [ 4024 case $enableval in 4025 yes) 4026 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1" 4027 ;; 4028 no) 4029 ;; 4030 *) 4031 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\ 4032 Valid choices are 'yes' and 'no'.]) 4033 ;; 4034 4035 esac 4036 ], 4037 []) 4038 ;; 4039 4040 # All TARGET_ABI_OSF targets. 4041 alpha*-*-linux* | alpha*-*-*bsd*) 4042 gcc_GAS_CHECK_FEATURE([explicit relocation support], 4043 gcc_cv_as_alpha_explicit_relocs, [2,12,0],, 4044[ .set nomacro 4045 .text 4046 extbl $3, $2, $3 !lituse_bytoff!1 4047 ldq $2, a($29) !literal!1 4048 ldq $4, b($29) !literal!2 4049 ldq_u $3, 0($2) !lituse_base!1 4050 ldq $27, f($29) !literal!5 4051 jsr $26, ($27), f !lituse_jsr!5 4052 ldah $29, 0($26) !gpdisp!3 4053 lda $0, c($29) !gprel 4054 ldah $1, d($29) !gprelhigh 4055 lda $1, d($1) !gprellow 4056 lda $29, 0($29) !gpdisp!3],, 4057 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1, 4058 [Define if your assembler supports explicit relocations.])]) 4059 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support], 4060 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],, 4061[ .set nomacro 4062 .text 4063 ldq $27, a($29) !literal!1 4064 jsr $26, ($27), a !lituse_jsrdirect!1],, 4065 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1, 4066 [Define if your assembler supports the lituse_jsrdirect relocation.])]) 4067 ;; 4068 4069 avr-*-*) 4070 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,, 4071 [--mlink-relax], [.text],, 4072 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1, 4073 [Define if your avr assembler supports --mlink-relax option.])]) 4074 4075 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,, 4076 [-mrmw], [.text],, 4077 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1, 4078 [Define if your avr assembler supports -mrmw option.])]) 4079 4080 gcc_GAS_CHECK_FEATURE([__gcc_isr pseudo instruction], 4081 gcc_cv_as_avr_mgccisr,, 4082 [-mgcc-isr], [.text 4083 __gcc_isr 1 4084 __gcc_isr 2 4085 __gcc_isr 0,r24 4086 ],, 4087 [AC_DEFINE(HAVE_AS_AVR_MGCCISR_OPTION, 1, 4088 [Define if your avr assembler supports -mgcc-isr option.])]) 4089 4090 # Check how default linker description file implements .rodata for 4091 # avrxmega3 (PR21472). avr-gcc assumes .rodata is *not* loaded to 4092 # RAM so avr-gcc skips __do_copy_data for .rodata objects. 4093 AC_MSG_CHECKING(binutils for avrxmega3 .rodata support) 4094 cat > conftest.s <<EOF 4095 .section .rodata,"a",@progbits 4096 .global xxvaryy 4097 ;; avr-nm should print "... R xxvaryy", not "... D xxvaryy". 4098 xxvaryy: 4099 .word 1 4100EOF 4101 rm -f conftest.nm 4102 AC_TRY_COMMAND([$gcc_cv_as -mmcu=avrxmega3 conftest.s -o conftest.o]) 4103 AC_TRY_COMMAND([$gcc_cv_ld -mavrxmega3 conftest.o -o conftest.elf]) 4104 AC_TRY_COMMAND([$gcc_cv_nm conftest.elf > conftest.nm]) 4105 if test -s conftest.nm 4106 then 4107 if grep ' R xxvaryy' conftest.nm > /dev/null; then 4108 AC_MSG_RESULT(yes) 4109 AC_DEFINE(HAVE_LD_AVR_AVRXMEGA3_RODATA_IN_FLASH, 1, 4110 [Define if your default avr linker script for avrxmega3 leaves .rodata in flash.]) 4111 else 4112 AC_MSG_RESULT(no: avrxmega3 .rodata located in RAM) 4113 echo "$as_me: nm output was" >&AS_MESSAGE_LOG_FD 4114 cat conftest.nm >&AS_MESSAGE_LOG_FD 4115 avr_ld_ver="`$gcc_cv_ld -v | sed -e 's:^.* ::'`" 4116 AC_MSG_WARN([[support for avrxmega3 .rodata in flash needs Binutils 2.29 or higher (have $avr_ld_ver)]]) 4117 fi 4118 else 4119 AC_MSG_RESULT(test failed) 4120 echo "$as_me: failed program was" >&AS_MESSAGE_LOG_FD 4121 cat conftest.s >&AS_MESSAGE_LOG_FD 4122 AC_MSG_WARN([[see `config.log' for details]]) 4123 fi 4124 rm -f conftest.s conftest.o conftest.elf conftest.nm 4125 ;; 4126 4127 cris-*-*) 4128 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option], 4129 gcc_cv_as_cris_no_mul_bug,[2,15,91], 4130 [-no-mul-bug-abort], [.text],, 4131 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1, 4132 [Define if your assembler supports the -no-mul-bug-abort option.])]) 4133 ;; 4134 4135 sparc*-*-*) 4136 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,, 4137 [-relax], [.text],, 4138 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1, 4139 [Define if your assembler supports -relax option.])]) 4140 4141 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs], 4142 gcc_cv_as_sparc_gotdata_op,, 4143 [-K PIC], 4144[.text 4145.align 4 4146foo: 4147 nop 4148bar: 4149 sethi %gdop_hix22(foo), %g1 4150 xor %g1, %gdop_lox10(foo), %g1 4151 ld [[%l7 + %g1]], %g2, %gdop(foo)], 4152 [if test x$gcc_cv_ld != x \ 4153 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then 4154 if test x$gcc_cv_objdump != x; then 4155 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \ 4156 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then 4157 gcc_cv_as_sparc_gotdata_op=no 4158 else 4159 gcc_cv_as_sparc_gotdata_op=yes 4160 fi 4161 fi 4162 fi 4163 rm -f conftest], 4164 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1, 4165 [Define if your assembler and linker support GOTDATA_OP relocs.])]) 4166 4167 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs], 4168 gcc_cv_as_sparc_ua_pcrel,, 4169 [-K PIC], 4170[.text 4171foo: 4172 nop 4173.data 4174.align 4 4175.byte 0 4176.uaword %r_disp32(foo)], 4177 [if test x$gcc_cv_ld != x \ 4178 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then 4179 gcc_cv_as_sparc_ua_pcrel=yes 4180 fi 4181 rm -f conftest], 4182 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1, 4183 [Define if your assembler and linker support unaligned PC relative relocs.]) 4184 4185 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols], 4186 gcc_cv_as_sparc_ua_pcrel_hidden,, 4187 [-K PIC], 4188[.data 4189.align 4 4190.byte 0x31 4191.uaword %r_disp32(foo) 4192.byte 0x32, 0x33, 0x34 4193.global foo 4194.hidden foo 4195foo: 4196.skip 4], 4197 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \ 4198 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \ 4199 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \ 4200 | grep ' 31000000 07323334' > /dev/null 2>&1; then 4201 if $gcc_cv_objdump -R conftest 2> /dev/null \ 4202 | grep 'DISP32' > /dev/null 2>&1; then 4203 : 4204 else 4205 gcc_cv_as_sparc_ua_pcrel_hidden=yes 4206 fi 4207 fi 4208 rm -f conftest], 4209 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1, 4210 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])]) 4211 ]) # unaligned pcrel relocs 4212 4213 gcc_GAS_CHECK_FEATURE([offsetable %lo()], 4214 gcc_cv_as_sparc_offsetable_lo10,, 4215 [-xarch=v9], 4216[.text 4217 or %g1, %lo(ab) + 12, %g1 4218 or %g1, %lo(ab + 12), %g1], 4219 [if test x$gcc_cv_objdump != x \ 4220 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \ 4221 | grep ' 82106000 82106000' > /dev/null 2>&1; then 4222 gcc_cv_as_sparc_offsetable_lo10=yes 4223 fi], 4224 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1, 4225 [Define if your assembler supports offsetable %lo().])]) 4226 4227 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions], 4228 gcc_cv_as_sparc_fmaf,, 4229 [-xarch=v9d], 4230 [.text 4231 .register %g2, #scratch 4232 .register %g3, #scratch 4233 .align 4 4234 fmaddd %f0, %f2, %f4, %f6 4235 addxccc %g1, %g2, %g3 4236 fsrl32 %f2, %f4, %f8 4237 fnaddd %f10, %f12, %f14],, 4238 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1, 4239 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])]) 4240 4241 gcc_GAS_CHECK_FEATURE([SPARC4 instructions], 4242 gcc_cv_as_sparc_sparc4,, 4243 [-xarch=sparc4], 4244 [.text 4245 .register %g2, #scratch 4246 .register %g3, #scratch 4247 .align 4 4248 cxbe %g2, %g3, 1f 42491: cwbneg %g2, %g3, 1f 42501: sha1 4251 md5 4252 aes_kexpand0 %f4, %f6, %f8 4253 des_round %f38, %f40, %f42, %f44 4254 camellia_f %f54, %f56, %f58, %f60 4255 kasumi_fi_xor %f46, %f48, %f50, %f52],, 4256 [AC_DEFINE(HAVE_AS_SPARC4, 1, 4257 [Define if your assembler supports SPARC4 instructions.])]) 4258 4259 gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions], 4260 gcc_cv_as_sparc_sparc5,, 4261 [-xarch=sparc5], 4262 [.text 4263 .register %g2, #scratch 4264 .register %g3, #scratch 4265 .align 4 4266 subxc %g1, %g2, %g3 4267 fpadd8 %f0, %f2, %f4],, 4268 [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1, 4269 [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])]) 4270 4271 gcc_GAS_CHECK_FEATURE([SPARC6 instructions], 4272 gcc_cv_as_sparc_sparc6,, 4273 [-xarch=sparc6], 4274 [.text 4275 .register %g2, #scratch 4276 .register %g3, #scratch 4277 .align 4 4278 rd %entropy, %g1 4279 fpsll64x %f0, %f2, %f4],, 4280 [AC_DEFINE(HAVE_AS_SPARC6, 1, 4281 [Define if your assembler supports SPARC6 instructions.])]) 4282 4283 gcc_GAS_CHECK_FEATURE([LEON instructions], 4284 gcc_cv_as_sparc_leon,, 4285 [-Aleon], 4286 [.text 4287 .register %g2, #scratch 4288 .register %g3, #scratch 4289 .align 4 4290 smac %g2, %g3, %g1 4291 umac %g2, %g3, %g1 4292 casa [[%g2]] 0xb, %g3, %g1],, 4293 [AC_DEFINE(HAVE_AS_LEON, 1, 4294 [Define if your assembler supports LEON instructions.])]) 4295 ;; 4296 4297changequote(,)dnl 4298 i[34567]86-*-* | x86_64-*-*) 4299changequote([,])dnl 4300 case $target_os in 4301 cygwin*) 4302 # Full C++ conformance when using a shared libstdc++-v3 requires some 4303 # support from the Cygwin DLL, which in more recent versions exports 4304 # wrappers to aid in interposing and redirecting operators new, delete, 4305 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we 4306 # are configuring for a version of Cygwin that exports the wrappers. 4307 if test x$host = x$target && test x$host_cpu = xi686; then 4308 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no]) 4309 else 4310 # Can't check presence of libc functions during cross-compile, so 4311 # we just have to assume we're building for an up-to-date target. 4312 gcc_ac_cygwin_dll_wrappers=yes 4313 fi 4314 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS, 4315 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`], 4316 [Define if you want to generate code by default that assumes that the 4317 Cygwin DLL exports wrappers to support libstdc++ function replacement.]) 4318 esac 4319 case $target_os in 4320 cygwin* | pe | mingw32*) 4321 # Recent binutils allows the three-operand form of ".comm" on PE. This 4322 # definition is used unconditionally to initialise the default state of 4323 # the target option variable that governs usage of the feature. 4324 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align, 4325 [2,19,52],,[.comm foo,1,32]) 4326 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM, 4327 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`], 4328 [Define if your assembler supports specifying the alignment 4329 of objects allocated using the GAS .comm command.]) 4330 # Used for DWARF 2 in PE 4331 gcc_GAS_CHECK_FEATURE([.secrel32 relocs], 4332 gcc_cv_as_ix86_pe_secrel32, 4333 [2,15,91],, 4334[.text 4335foo: nop 4336.data 4337 .secrel32 foo], 4338 [if test x$gcc_cv_ld != x \ 4339 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then 4340 gcc_cv_as_ix86_pe_secrel32=yes 4341 fi 4342 rm -f conftest], 4343 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1, 4344 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])]) 4345 # Test if the assembler supports the extended form of the .section 4346 # directive that specifies section alignment. LTO support uses this, 4347 # but normally only after installation, so we warn but don't fail the 4348 # configure if LTO is enabled but the assembler does not support it. 4349 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align, 4350 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"]) 4351 if test x$gcc_cv_as_section_has_align != xyes; then 4352 case ",$enable_languages," in 4353 *,lto,*) 4354 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.]) 4355 ;; 4356 esac 4357 fi 4358 ;; 4359 esac 4360 4361 gcc_GAS_CHECK_FEATURE([-xbrace_comment], gcc_cv_as_ix86_xbrace_comment,, 4362 [-xbrace_comment=no], [.text],, 4363 [AC_DEFINE(HAVE_AS_XBRACE_COMMENT_OPTION, 1, 4364 [Define if your assembler supports -xbrace_comment option.])]) 4365 4366 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics], 4367 gcc_cv_as_ix86_filds,,, 4368 [filds (%ebp); fists (%ebp)],, 4369 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1, 4370 [Define if your assembler uses filds and fists mnemonics.])]) 4371 4372 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics], 4373 gcc_cv_as_ix86_fildq,,, 4374 [fildq (%ebp); fistpq (%ebp)],, 4375 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1, 4376 [Define if your assembler uses fildq and fistq mnemonics.])]) 4377 4378 gcc_GAS_CHECK_FEATURE([cmov syntax], 4379 gcc_cv_as_ix86_cmov_sun_syntax,,, 4380 [cmovl.l %edx, %eax],, 4381 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1, 4382 [Define if your assembler supports the Sun syntax for cmov.])]) 4383 4384 gcc_GAS_CHECK_FEATURE([ffreep mnemonic], 4385 gcc_cv_as_ix86_ffreep,,, 4386 [ffreep %st(1)],, 4387 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1, 4388 [Define if your assembler supports the ffreep mnemonic.])]) 4389 4390 gcc_GAS_CHECK_FEATURE([.quad directive], 4391 gcc_cv_as_ix86_quad,,, 4392 [.quad 0],, 4393 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1, 4394 [Define if your assembler supports the .quad directive.])]) 4395 4396 gcc_GAS_CHECK_FEATURE([sahf mnemonic], 4397 gcc_cv_as_ix86_sahf,,, 4398 [.code64 4399 sahf],, 4400 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1, 4401 [Define if your assembler supports the sahf mnemonic in 64bit mode.])]) 4402 4403 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic], 4404 gcc_cv_as_ix86_interunit_movq,,, 4405 [.code64 4406 movq %mm0, %rax 4407 movq %rax, %xmm0]) 4408 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ, 4409 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`], 4410 [Define if your assembler supports interunit movq mnemonic.]) 4411 4412 gcc_GAS_CHECK_FEATURE([hle prefixes], 4413 gcc_cv_as_ix86_hle,,, 4414 [lock xacquire cmpxchg %esi, (%ecx)],, 4415 [AC_DEFINE(HAVE_AS_IX86_HLE, 1, 4416 [Define if your assembler supports HLE prefixes.])]) 4417 4418 gcc_GAS_CHECK_FEATURE([swap suffix], 4419 gcc_cv_as_ix86_swap,,, 4420 [movl.s %esp, %ebp],, 4421 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1, 4422 [Define if your assembler supports the swap suffix.])]) 4423 4424 gcc_GAS_CHECK_FEATURE([different section symbol subtraction], 4425 gcc_cv_as_ix86_diff_sect_delta,,, 4426 [.section .rodata 4427.L1: 4428 .long .L2-.L1 4429 .long .L3-.L1 4430 .text 4431.L3: nop 4432.L2: nop],, 4433 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1, 4434 [Define if your assembler supports the subtraction of symbols in different sections.])]) 4435 4436 gcc_GAS_CHECK_FEATURE([rep and lock prefix], 4437 gcc_cv_as_ix86_rep_lock_prefix,,, 4438 [rep movsl 4439 rep ret 4440 rep nop 4441 rep bsf %ecx, %eax 4442 rep bsr %ecx, %eax 4443 lock addl %edi, (%eax,%esi) 4444 lock orl $0, (%esp)],, 4445 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1, 4446 [Define if the assembler supports 'rep <insn>, lock <insn>'.])]) 4447 4448 gcc_GAS_CHECK_FEATURE([ud2 mnemonic], 4449 gcc_cv_as_ix86_ud2,,, 4450 [ud2],, 4451 [AC_DEFINE(HAVE_AS_IX86_UD2, 1, 4452 [Define if your assembler supports the 'ud2' mnemonic.])]) 4453 4454 # Enforce 32-bit output with gas and gld. 4455 if test x$gas = xyes; then 4456 as_ix86_gas_32_opt="--32" 4457 fi 4458 if echo "$ld_ver" | grep GNU > /dev/null; then 4459 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then 4460 ld_ix86_gld_32_opt="-melf_i386_sol2" 4461 else 4462 ld_ix86_gld_32_opt="-melf_i386" 4463 fi 4464 fi 4465 4466 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc], 4467 gcc_cv_as_ix86_tlsgdplt,, 4468 [$as_ix86_gas_32_opt], 4469 [call tls_gd@tlsgdplt], 4470 [if test x$gcc_cv_ld != x \ 4471 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then 4472 gcc_cv_as_ix86_tlsgdplt=yes 4473 fi 4474 rm -f conftest], 4475 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1, 4476 [Define if your assembler and linker support @tlsgdplt.])]) 4477 4478 conftest_s=' 4479 .section .tdata,"aw'$tls_section_flag'",@progbits 4480tls_ld: 4481 .section .text,"ax",@progbits 4482 call tls_ld@tlsldmplt' 4483 4484 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc], 4485 gcc_cv_as_ix86_tlsldmplt,, 4486 [$as_ix86_gas_32_opt], 4487 [$conftest_s], 4488 [if test x$gcc_cv_ld != x \ 4489 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then 4490 gcc_cv_as_ix86_tlsldmplt=yes 4491 fi 4492 rm -f conftest]) 4493 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT, 4494 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`], 4495 [Define to 1 if your assembler and linker support @tlsldmplt.]) 4496 4497 conftest_s=' 4498 .section .text,"ax",@progbits 4499 .globl _start 4500 .type _start, @function 4501_start: 4502 leal value@tlsldm(%ebx), %eax 4503 call ___tls_get_addr@plt 4504 4505 .section .tdata,"aw'$tls_section_flag'",@progbits 4506 .type value, @object 4507value:' 4508 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc], 4509 gcc_cv_as_ix86_tlsldm,, 4510 [$as_ix86_gas_32_opt], 4511 [$conftest_s], 4512 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \ 4513 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then 4514 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \ 4515 || dis conftest 2>/dev/null | grep nop > /dev/null; then 4516 gcc_cv_as_ix86_tlsldm=yes 4517 fi 4518 fi 4519 rm -f conftest]) 4520 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM, 4521 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`], 4522 [Define to 1 if your assembler and linker support @tlsldm.]) 4523 4524 conftest_s=' 4525 .data 4526bar: 4527 .byte 1 4528 .text 4529 .global _start 4530_start: 4531 cmpl $0, bar@GOT 4532 jmp *_start@GOT' 4533 gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc], 4534 gcc_cv_as_ix86_got32x,, 4535 [$as_ix86_gas_32_opt], 4536 [$conftest_s], 4537 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \ 4538 && test x$gcc_cv_readelf != x \ 4539 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \ 4540 | grep R_386_GOT32X > /dev/null 2>&1 \ 4541 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then 4542 if $gcc_cv_objdump -dw conftest 2>&1 \ 4543 | grep 0xffffff > /dev/null 2>&1; then 4544 gcc_cv_as_ix86_got32x=no 4545 else 4546 gcc_cv_as_ix86_got32x=yes 4547 fi 4548 fi 4549 rm -f conftest]) 4550 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X, 4551 [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`], 4552 [Define 0/1 if your assembler and linker support @GOT.]) 4553 4554 gcc_GAS_CHECK_FEATURE([GOTOFF in data], 4555 gcc_cv_as_ix86_gotoff_in_data, [2,11,0], 4556 [$as_ix86_gas_32_opt], 4557[ .text 4558.L0: 4559 nop 4560 .data 4561 .long .L0@GOTOFF]) 4562 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA, 4563 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`], 4564 [Define true if the assembler supports '.long foo@GOTOFF'.]) 4565 4566 conftest_s=' 4567 .section .text,"ax",@progbits 4568 .globl _start 4569 .type _start, @function 4570_start: 4571 leal ld@tlsldm(%ecx), %eax 4572 call *___tls_get_addr@GOT(%ecx) 4573 leal gd@tlsgd(%ecx), %eax 4574 call *___tls_get_addr@GOT(%ecx) 4575 4576 .section .tdata,"aw'$tls_section_flag'",@progbits 4577 .type ld, @object 4578ld: 4579 .byte 0 4580 .globl gd 4581 .type gd, @object 4582gd: 4583 .byte 0' 4584 gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT], 4585 gcc_cv_as_ix86_tls_get_addr_via_got,, 4586 [$as_ix86_gas_32_opt], 4587 [$conftest_s], 4588 [if test x$gcc_cv_ld != x \ 4589 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then 4590 gcc_cv_as_ix86_tls_get_addr_via_got=yes 4591 fi 4592 rm -f conftest]) 4593 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT, 4594 [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`], 4595 [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.]) 4596 ;; 4597 4598 ia64*-*-*) 4599 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs], 4600 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],, 4601[ .text 4602 addl r15 = @ltoffx(x#), gp 4603 ;; 4604 ld8.mov r16 = [[r15]], x# 4605],, 4606 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1, 4607 [Define if your assembler supports ltoffx and ldxmov relocations.])]) 4608 4609 ;; 4610 4611 powerpc*-*-*) 4612 4613 case $target in 4614 *-*-darwin*) 4615 gcc_GAS_CHECK_FEATURE([.machine directive support], 4616 gcc_cv_as_machine_directive,,, 4617 [ .machine ppc7400]) 4618 if test x$gcc_cv_as_machine_directive != xyes; then 4619 echo "*** This target requires an assembler supporting \".machine\"" >&2 4620 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2 4621 test x$build = x$target && exit 1 4622 fi 4623 ;; 4624 esac 4625 4626 case $target in 4627 *-*-aix*) conftest_s=' .machine "pwr5" 4628 .csect .text[[PR]] 4629 mfcr 3,128';; 4630 *-*-darwin*) conftest_s=' .text 4631 mfcr r3,128';; 4632 *) conftest_s=' .machine power4 4633 .text 4634 mfcr 3,128';; 4635 esac 4636 4637 gcc_GAS_CHECK_FEATURE([mfcr field support], 4638 gcc_cv_as_powerpc_mfcrf, [2,14,0],, 4639 [$conftest_s],, 4640 [AC_DEFINE(HAVE_AS_MFCRF, 1, 4641 [Define if your assembler supports mfcr field.])]) 4642 4643 case $target in 4644 *-*-aix*) conftest_s=' .csect .text[[PR]] 4645LCF..0: 4646 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';; 4647 *-*-darwin*) 4648 conftest_s=' .text 4649LCF0: 4650 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';; 4651 *) conftest_s=' .text 4652.LCF0: 4653 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';; 4654 esac 4655 4656 gcc_GAS_CHECK_FEATURE([rel16 relocs], 4657 gcc_cv_as_powerpc_rel16, [2,17,0], -a32, 4658 [$conftest_s],, 4659 [AC_DEFINE(HAVE_AS_REL16, 1, 4660 [Define if your assembler supports R_PPC_REL16 relocs.])]) 4661 4662 case $target in 4663 *-*-aix*) conftest_s=' .machine "pwr7" 4664 .csect .text[[PR]] 4665 lxvd2x 1,2,3';; 4666 *) conftest_s=' .machine power7 4667 .text 4668 lxvd2x 1,2,3';; 4669 esac 4670 4671 gcc_GAS_CHECK_FEATURE([vector-scalar support], 4672 gcc_cv_as_powerpc_vsx, [2,19,2], -a32, 4673 [$conftest_s],, 4674 [AC_DEFINE(HAVE_AS_VSX, 1, 4675 [Define if your assembler supports VSX instructions.])]) 4676 4677 gcc_GAS_CHECK_FEATURE([.gnu_attribute support], 4678 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],, 4679 [.gnu_attribute 4,1],, 4680 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1, 4681 [Define if your assembler supports .gnu_attribute.])]) 4682 4683 gcc_GAS_CHECK_FEATURE([tls marker support], 4684 gcc_cv_as_powerpc_tls_markers, [2,20,0],, 4685 [ bl __tls_get_addr(x@tlsgd)],, 4686 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1, 4687 [Define if your assembler supports arg info for __tls_get_addr.])]) 4688 4689 gcc_GAS_CHECK_FEATURE([prologue entry point marker support], 4690 gcc_cv_as_powerpc_entry_markers, [2,26,0],-a64 --fatal-warnings, 4691 [ .reloc .,R_PPC64_ENTRY; nop],, 4692 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1, 4693 [Define if your assembler supports the R_PPC64_ENTRY relocation.])]) 4694 4695 gcc_GAS_CHECK_FEATURE([plt sequence marker support], 4696 gcc_cv_as_powerpc_pltseq_markers, [2,31,0],-a32 --fatal-warnings, 4697 [ .reloc .,R_PPC_PLTSEQ; nop],, 4698 [AC_DEFINE(HAVE_AS_PLTSEQ, 1, 4699 [Define if your assembler supports R_PPC*_PLTSEQ relocations.])]) 4700 4701 case $target in 4702 *-*-aix*) 4703 gcc_GAS_CHECK_FEATURE([AIX .ref support], 4704 gcc_cv_as_aix_ref, [2,21,0],, 4705 [ .csect stuff[[rw]] 4706 stuff: 4707 .long 1 4708 .extern sym 4709 .ref sym 4710 ],, 4711 [AC_DEFINE(HAVE_AS_REF, 1, 4712 [Define if your assembler supports .ref])]) 4713 4714 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support], 4715 gcc_cv_as_aix_dwloc, [2,21,0],, 4716 [ .dwsect 0xA0000 4717 Lframe..0: 4718 .vbyte 4,Lframe..0 4719 ],, 4720 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1, 4721 [Define if your assembler supports AIX debug frame section label reference.])]) 4722 ;; 4723 esac 4724 ;; 4725 4726 mips*-*-*) 4727 gcc_GAS_CHECK_FEATURE([explicit relocation support], 4728 gcc_cv_as_mips_explicit_relocs, [2,14,0],, 4729[ lw $4,%gp_rel(foo)($4)],, 4730 [if test x$target_cpu_default = x 4731 then target_cpu_default=MASK_EXPLICIT_RELOCS 4732 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS" 4733 fi]) 4734 4735 gcc_GAS_CHECK_FEATURE([-mno-shared support], 4736 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],, 4737 [AC_DEFINE(HAVE_AS_NO_SHARED, 1, 4738 [Define if the assembler understands -mno-shared.])]) 4739 4740 gcc_GAS_CHECK_FEATURE([.gnu_attribute support], 4741 gcc_cv_as_mips_gnu_attribute, [2,18,0],, 4742 [.gnu_attribute 4,1],, 4743 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1, 4744 [Define if your assembler supports .gnu_attribute.])]) 4745 4746 gcc_GAS_CHECK_FEATURE([.module support], 4747 gcc_cv_as_mips_dot_module,,[-32], 4748 [.module mips2 4749 .module fp=xx],, 4750 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1, 4751 [Define if your assembler supports .module.])]) 4752 if test x$gcc_cv_as_mips_dot_module = xno \ 4753 && test x$with_fp_32 != x; then 4754 AC_MSG_ERROR( 4755 [Requesting --with-fp-32= requires assembler support for .module.]) 4756 fi 4757 4758 gcc_GAS_CHECK_FEATURE([.micromips support], 4759 gcc_cv_as_micromips_support,,[--fatal-warnings], 4760 [.set micromips],, 4761 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1, 4762 [Define if your assembler supports the .set micromips directive])]) 4763 4764 gcc_GAS_CHECK_FEATURE([.dtprelword support], 4765 gcc_cv_as_mips_dtprelword, [2,18,0],, 4766 [.section .tdata,"awT",@progbits 4767x: 4768 .word 2 4769 .text 4770 .dtprelword x+0x8000],, 4771 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1, 4772 [Define if your assembler supports .dtprelword.])]) 4773 4774 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support], 4775 gcc_cv_as_mips_dspr1_mult,,, 4776[ .set mips32r2 4777 .set nodspr2 4778 .set dsp 4779 madd $ac3,$4,$5 4780 maddu $ac3,$4,$5 4781 msub $ac3,$4,$5 4782 msubu $ac3,$4,$5 4783 mult $ac3,$4,$5 4784 multu $ac3,$4,$5],, 4785 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1, 4786 [Define if your assembler supports DSPR1 mult.])]) 4787 4788 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation) 4789 gcc_cv_as_ld_jalr_reloc=no 4790 if test $gcc_cv_as_mips_explicit_relocs = yes; then 4791 if test $in_tree_ld = yes ; then 4792 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \ 4793 && test $in_tree_ld_is_elf = yes; then 4794 gcc_cv_as_ld_jalr_reloc=yes 4795 fi 4796 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then 4797 echo ' .ent x' > conftest.s 4798 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s 4799 echo ' lw $25,%call16(y)($28)' >> conftest.s 4800 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s 4801 echo '1: jalr $25' >> conftest.s 4802 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s 4803 echo '1: jalr $25' >> conftest.s 4804 echo ' .end x' >> conftest.s 4805 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \ 4806 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then 4807 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \ 4808 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then 4809 gcc_cv_as_ld_jalr_reloc=yes 4810 fi 4811 fi 4812 rm -f conftest.* 4813 fi 4814 fi 4815 if test $gcc_cv_as_ld_jalr_reloc = yes; then 4816 if test x$target_cpu_default = x; then 4817 target_cpu_default=MASK_RELAX_PIC_CALLS 4818 else 4819 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS" 4820 fi 4821 fi 4822 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc) 4823 4824 AC_CACHE_CHECK([linker for .eh_frame personality relaxation], 4825 [gcc_cv_ld_mips_personality_relaxation], 4826 [gcc_cv_ld_mips_personality_relaxation=no 4827 if test $in_tree_ld = yes ; then 4828 if test "$gcc_cv_gld_major_version" -eq 2 \ 4829 -a "$gcc_cv_gld_minor_version" -ge 21 \ 4830 -o "$gcc_cv_gld_major_version" -gt 2; then 4831 gcc_cv_ld_mips_personality_relaxation=yes 4832 fi 4833 elif test x$gcc_cv_as != x \ 4834 -a x$gcc_cv_ld != x \ 4835 -a x$gcc_cv_readelf != x ; then 4836 cat > conftest.s <<EOF 4837 .cfi_startproc 4838 .cfi_personality 0x80,indirect_ptr 4839 .ent test 4840test: 4841 nop 4842 .end test 4843 .cfi_endproc 4844 4845 .section .data,"aw",@progbits 4846indirect_ptr: 4847 .dc.a personality 4848EOF 4849 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \ 4850 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then 4851 if $gcc_cv_readelf -d conftest 2>&1 \ 4852 | grep TEXTREL > /dev/null 2>&1; then 4853 : 4854 elif $gcc_cv_readelf --relocs conftest 2>&1 \ 4855 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then 4856 : 4857 else 4858 gcc_cv_ld_mips_personality_relaxation=yes 4859 fi 4860 fi 4861 fi 4862 rm -f conftest.s conftest.o conftest]) 4863 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then 4864 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1, 4865 [Define if your linker can relax absolute .eh_frame personality 4866pointers into PC-relative form.]) 4867 fi 4868 4869 gcc_GAS_CHECK_FEATURE([-mnan= support], 4870 gcc_cv_as_mips_nan,, 4871 [-mnan=2008],,, 4872 [AC_DEFINE(HAVE_AS_NAN, 1, 4873 [Define if the assembler understands -mnan=.])]) 4874 if test x$gcc_cv_as_mips_nan = xno \ 4875 && test x$with_nan != x; then 4876 AC_MSG_ERROR( 4877 [Requesting --with-nan= requires assembler support for -mnan=]) 4878 fi 4879 ;; 4880 riscv*-*-*) 4881 gcc_GAS_CHECK_FEATURE([.attribute support], 4882 gcc_cv_as_riscv_attribute, [2,32,0],, 4883 [.attribute stack_align,4],, 4884 [AC_DEFINE(HAVE_AS_RISCV_ATTRIBUTE, 1, 4885 [Define if your assembler supports .attribute.])]) 4886 ;; 4887 s390*-*-*) 4888 gcc_GAS_CHECK_FEATURE([.gnu_attribute support], 4889 gcc_cv_as_s390_gnu_attribute, [2,18,0],, 4890 [.gnu_attribute 8,1],, 4891 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1, 4892 [Define if your assembler supports .gnu_attribute.])]) 4893 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support], 4894 gcc_cv_as_s390_machine_machinemode, [2,24,0],, 4895 [ .machinemode push 4896 .machinemode pop 4897 .machine push 4898 .machine pop],, 4899 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1, 4900 [Define if your assembler supports .machine and .machinemode.])]) 4901 gcc_GAS_CHECK_FEATURE([architecture modifiers support], 4902 gcc_cv_as_s390_architecture_modifiers, [2,26,0],, 4903 [ .machine z13+vx ],, 4904 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1, 4905 [Define if your assembler supports architecture modifiers.])]) 4906 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints], 4907 gcc_cv_as_s390_vector_loadstore_alignment_hints, [2,31,0],, 4908 [ vl %v24,0(%r15),3 ],, 4909 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS, 1, 4910 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument.])]) 4911 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints on z13], 4912 gcc_cv_as_s390_vector_loadstore_alignment_hints_on_z13,, [-mzarch -march=z13], 4913 [ vl %v24,0(%r15),3 ],, 4914 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS_ON_Z13, 1, 4915 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument on z13.])]) 4916 4917 ;; 4918esac 4919 4920# Mips and HP-UX need the GNU assembler. 4921# Linux on IA64 might be able to use the Intel assembler. 4922 4923case "$target" in 4924 mips*-*-* | *-*-hpux* ) 4925 if test x$gas_flag = xyes \ 4926 || test x"$host" != x"$build" \ 4927 || test ! -x "$gcc_cv_as" \ 4928 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then 4929 : 4930 else 4931 echo "*** This configuration requires the GNU assembler" >&2 4932 exit 1 4933 fi 4934 ;; 4935esac 4936 4937# ??? Not all targets support dwarf2 debug_line, even within a version 4938# of gas. Moreover, we need to emit a valid instruction to trigger any 4939# info to the output file. So, as supported targets are added to gas 2.11, 4940# add some instruction here to (also) show we expect this might work. 4941# ??? Once 2.11 is released, probably need to add first known working 4942# version to the per-target configury. 4943case "$cpu_type" in 4944 aarch64 | alpha | arc | arm | avr | bfin | cris | csky | i386 | m32c | m68k \ 4945 | microblaze | mips | nds32 | nios2 | pa | riscv | rs6000 | score | sparc | spu \ 4946 | tilegx | tilepro | visium | xstormy16 | xtensa) 4947 insn="nop" 4948 ;; 4949 ia64 | s390) 4950 insn="nop 0" 4951 ;; 4952 mmix) 4953 insn="swym 0" 4954 ;; 4955esac 4956if test x"$insn" != x; then 4957 conftest_s="\ 4958 .file 1 \"conftest.s\" 4959 .loc 1 3 0 4960 $insn" 4961 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support], 4962 gcc_cv_as_dwarf2_debug_line, 4963 [elf,2,11,0],, [$conftest_s], 4964 [if test x$gcc_cv_objdump != x \ 4965 && $gcc_cv_objdump -h conftest.o 2> /dev/null \ 4966 | grep debug_line > /dev/null 2>&1; then 4967 gcc_cv_as_dwarf2_debug_line=yes 4968 elif test x$gcc_cv_otool != x \ 4969 && $gcc_cv_otool -l conftest.o 2> /dev/null \ 4970 | grep debug_line > /dev/null 2>&1; then 4971 gcc_cv_as_dwarf2_debug_line=yes 4972 fi]) 4973 4974# The .debug_line file table must be in the exact order that 4975# we specified the files, since these indices are also used 4976# by DW_AT_decl_file. Approximate this test by testing if 4977# the assembler bitches if the same index is assigned twice. 4978 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive], 4979 gcc_cv_as_dwarf2_file_buggy,,, 4980[ .file 1 "foo.s" 4981 .file 1 "bar.s"]) 4982 4983 if test $gcc_cv_as_dwarf2_debug_line = yes \ 4984 && test $gcc_cv_as_dwarf2_file_buggy = no; then 4985 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1, 4986 [Define if your assembler supports dwarf2 .file/.loc directives, 4987 and preserves file table indices exactly as given.]) 4988 4989 if test $gcc_cv_as_leb128 = yes; then 4990 conftest_s="\ 4991 .file 1 \"conftest.s\" 4992 .loc 1 3 0 view .LVU1 4993 $insn 4994 .data 4995 .uleb128 .LVU1 4996 .uleb128 .LVU1 4997" 4998 gcc_GAS_CHECK_FEATURE([dwarf2 debug_view support], 4999 gcc_cv_as_dwarf2_debug_view, 5000 [elf,2,27,0],,[$conftest_s],, 5001 [AC_DEFINE(HAVE_AS_DWARF2_DEBUG_VIEW, 1, 5002 [Define if your assembler supports views in dwarf2 .loc directives.])]) 5003 fi 5004 fi 5005 5006 gcc_GAS_CHECK_FEATURE([--gdwarf2 option], 5007 gcc_cv_as_gdwarf2_flag, 5008 [elf,2,11,0], [--gdwarf2], [$insn],, 5009 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1, 5010[Define if your assembler supports the --gdwarf2 option.])]) 5011 5012 gcc_GAS_CHECK_FEATURE([--gstabs option], 5013 gcc_cv_as_gstabs_flag, 5014 [elf,2,11,0], [--gstabs], [$insn],, 5015 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1, 5016[Define if your assembler supports the --gstabs option.])]) 5017 5018 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option], 5019 gcc_cv_as_debug_prefix_map_flag, 5020 [2,18,0], [--debug-prefix-map /a=/b], [$insn],, 5021 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1, 5022[Define if your assembler supports the --debug-prefix-map option.])]) 5023fi 5024 5025gcc_GAS_CHECK_FEATURE([compressed debug sections], 5026 gcc_cv_as_compress_debug,,,, 5027 [# gas compiled without zlib cannot compress debug sections and warns 5028 # about it, but still exits successfully. So check for this, too. 5029 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null 5030 then 5031 gcc_cv_as_compress_debug=0 5032 # Since binutils 2.26, gas supports --compress-debug-sections=type, 5033 # defaulting to the ELF gABI format. 5034 elif $gcc_cv_as --compress-debug-sections=zlib-gnu -o conftest.o conftest.s > /dev/null 2>&1 5035 then 5036 gcc_cv_as_compress_debug=2 5037 gcc_cv_as_compress_debug_option="--compress-debug-sections" 5038 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections" 5039 # Before binutils 2.26, gas only supported --compress-debug-options and 5040 # emitted the traditional GNU format. 5041 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1 5042 then 5043 gcc_cv_as_compress_debug=1 5044 gcc_cv_as_compress_debug_option="--compress-debug-sections" 5045 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections" 5046 else 5047 gcc_cv_as_compress_debug=0 5048 fi]) 5049AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug, 5050[Define to the level of your assembler's compressed debug section support.]) 5051AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option", 5052[Define to the assembler option to enable compressed debug sections.]) 5053AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option", 5054[Define to the assembler option to disable compressed debug sections.]) 5055 5056gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment, 5057 ,, 5058[.lcomm bar,4,16],, 5059[AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1, 5060 [Define if your assembler supports .lcomm with an alignment field.])]) 5061 5062if test x$with_sysroot = x && test x$host = x$target \ 5063 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \ 5064 && test "$prefix" != "NONE"; then 5065 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include", 5066[Define to PREFIX/include if cpp should also search that directory.]) 5067fi 5068 5069# Determine the version of glibc, if any, used on the target. 5070AC_MSG_CHECKING([for target glibc version]) 5071AC_ARG_WITH([glibc-version], 5072 [AS_HELP_STRING([--with-glibc-version=M.N], 5073 [assume GCC used with glibc version M.N or later])], [ 5074if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then 5075 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'` 5076 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'` 5077else 5078 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N]) 5079fi], [ 5080glibc_version_major=0 5081glibc_version_minor=0 5082[if test -f $target_header_dir/features.h \ 5083 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \ 5084 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then 5085 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'` 5086 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'` 5087fi]]) 5088AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor]) 5089AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major], 5090[GNU C Library major version number used on the target, or 0.]) 5091AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor], 5092[GNU C Library minor version number used on the target, or 0.]) 5093 5094AC_ARG_ENABLE(gnu-unique-object, 5095 [AS_HELP_STRING([--enable-gnu-unique-object], 5096 [enable the use of the @gnu_unique_object ELF extension on glibc systems])], 5097 [case $enable_gnu_unique_object in 5098 yes | no) ;; 5099 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object. 5100Valid choices are 'yes' and 'no'.]) ;; 5101 esac], 5102 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object, 5103 [elf,2,19,52],, 5104 [.type foo, '$target_type_format_char'gnu_unique_object],, 5105# We need to unquote above to to use the definition from config.gcc. 5106# Also check for ld.so support, i.e. glibc 2.11 or higher. 5107 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )] 5108 )]) 5109if test x$enable_gnu_unique_object = xyes; then 5110 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1, 5111 [Define if your assembler supports @gnu_unique_object.]) 5112fi 5113 5114AC_CACHE_CHECK([assembler for tolerance to line number 0], 5115 [gcc_cv_as_line_zero], 5116 [gcc_cv_as_line_zero=no 5117 if test $in_tree_gas = yes; then 5118 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes]) 5119 elif test "x$gcc_cv_as" != x; then 5120 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s 5121 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) && 5122 test "x`cat conftest.out`" = x 5123 then 5124 gcc_cv_as_line_zero=yes 5125 else 5126 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD 5127 cat conftest.s >&AS_MESSAGE_LOG_FD 5128 echo "configure: error output was" >&AS_MESSAGE_LOG_FD 5129 cat conftest.out >&AS_MESSAGE_LOG_FD 5130 fi 5131 rm -f conftest.o conftest.s conftest.out 5132 fi]) 5133if test "x$gcc_cv_as_line_zero" = xyes; then 5134 AC_DEFINE([HAVE_AS_LINE_ZERO], 1, 5135[Define if the assembler won't complain about a line such as # 0 "" 2.]) 5136fi 5137 5138AC_MSG_CHECKING(support for thin archives) 5139thin_archive_support=no 5140echo 'int main (void) { return 0; }' > conftest.c 5141if ($AR --version | sed 1q | grep "GNU ar" \ 5142 && $CC $CFLAGS -c conftest.c \ 5143 && $AR rcT conftest.a conftest.o \ 5144 && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then 5145 thin_archive_support=yes 5146fi 5147rm -f conftest.c conftest.o conftest.a conftest 5148AC_MSG_RESULT($thin_archive_support) 5149AC_SUBST(thin_archive_support) 5150 5151AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support) 5152gcc_cv_ld_eh_frame_hdr=no 5153if test $in_tree_ld = yes ; then 5154 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \ 5155 && test $in_tree_ld_is_elf = yes; then 5156 gcc_cv_ld_eh_frame_hdr=yes 5157 fi 5158elif test x$gcc_cv_ld != x; then 5159 if echo "$ld_ver" | grep GNU > /dev/null; then 5160 # Check if linker supports --eh-frame-hdr option 5161 if $gcc_cv_ld --help 2>&1 | grep eh-frame-hdr > /dev/null; then 5162 gcc_cv_ld_eh_frame_hdr=yes 5163 fi 5164 else 5165 case "$target" in 5166 *-*-solaris2*) 5167 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251. 5168 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then 5169 gcc_cv_ld_eh_frame_hdr=yes 5170 fi 5171 ;; 5172 esac 5173 fi 5174fi 5175GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR]) 5176if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then 5177 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1, 5178[Define if your linker supports .eh_frame_hdr.]) 5179fi 5180AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr) 5181 5182AC_MSG_CHECKING(linker CIEv3 in .eh_frame support) 5183gcc_cv_ld_eh_frame_ciev3=no 5184if test $in_tree_ld = yes ; then 5185 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \ 5186 && test $in_tree_ld_is_elf = yes; then 5187 gcc_cv_ld_eh_frame_ciev3=yes 5188 fi 5189elif test x$gcc_cv_ld != x; then 5190 if echo "$ld_ver" | grep GNU > /dev/null; then 5191 gcc_cv_ld_eh_frame_ciev3=yes 5192 if test 0"$ld_date" -lt 20040513; then 5193 if test -n "$ld_date"; then 5194 # If there was date string, but was earlier than 2004-05-13, fail 5195 gcc_cv_ld_eh_frame_ciev3=no 5196 elif test "$ld_vers_major" -lt 2; then 5197 gcc_cv_ld_eh_frame_ciev3=no 5198 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then 5199 gcc_cv_ld_eh_frame_ciev3=no 5200 fi 5201 fi 5202 else 5203 case "$target" in 5204 *-*-solaris2*) 5205 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1. 5206 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then 5207 gcc_cv_ld_eh_frame_ciev3=yes 5208 fi 5209 ;; 5210 esac 5211 fi 5212fi 5213AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3, 5214 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`], 5215 [Define 0/1 if your linker supports CIE v3 in .eh_frame.]) 5216AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3) 5217 5218AC_MSG_CHECKING(linker position independent executable support) 5219gcc_cv_ld_pie=no 5220if test $in_tree_ld = yes ; then 5221 case "$target" in 5222 # Full PIE support on Solaris was only introduced in gld 2.26. 5223 *-*-solaris2*) gcc_gld_pie_min_version=26 ;; 5224 *) gcc_gld_pie_min_version=15 ;; 5225 esac 5226 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 \ 5227 && test $in_tree_ld_is_elf = yes; then 5228 gcc_cv_ld_pie=yes 5229 fi 5230elif test x$gcc_cv_ld != x; then 5231 # Check if linker supports -pie option 5232 if $gcc_cv_ld --help 2>&1 | grep -- -pie > /dev/null; then 5233 gcc_cv_ld_pie=yes 5234 case "$target" in 5235 *-*-solaris2*) 5236 if echo "$ld_ver" | grep GNU > /dev/null \ 5237 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then 5238 gcc_cv_ld_pie=no 5239 fi 5240 ;; 5241 esac 5242 else 5243 case "$target" in 5244 *-*-solaris2.1[[1-9]]*) 5245 # Solaris 11.3 added PIE support. 5246 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then 5247 gcc_cv_ld_pie=yes 5248 fi 5249 ;; 5250 esac 5251 fi 5252fi 5253if test x"$gcc_cv_ld_pie" = xyes; then 5254 AC_DEFINE(HAVE_LD_PIE, 1, 5255[Define if your linker supports PIE option.]) 5256fi 5257AC_MSG_RESULT($gcc_cv_ld_pie) 5258 5259AC_MSG_CHECKING(linker PIE support with copy reloc) 5260gcc_cv_ld_pie_copyreloc=no 5261if test $gcc_cv_ld_pie = yes ; then 5262 if test $in_tree_ld = yes ; then 5263 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then 5264 gcc_cv_ld_pie_copyreloc=yes 5265 fi 5266 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then 5267 # Check if linker supports -pie option with copy reloc 5268 case "$target" in 5269 i?86-*-linux* | x86_64-*-linux*) 5270 cat > conftest1.s <<EOF 5271 .globl a_glob 5272 .data 5273 .type a_glob, @object 5274 .size a_glob, 4 5275a_glob: 5276 .long 2 5277EOF 5278 cat > conftest2.s <<EOF 5279 .text 5280 .globl main 5281 .type main, @function 5282main: 5283 movl %eax, a_glob(%rip) 5284 .size main, .-main 5285 .globl ptr 5286 .section .data.rel,"aw",@progbits 5287 .type ptr, @object 5288ptr: 5289 .quad a_glob 5290EOF 5291 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \ 5292 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \ 5293 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \ 5294 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then 5295 gcc_cv_ld_pie_copyreloc=yes 5296 fi 5297 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s 5298 ;; 5299 esac 5300 fi 5301fi 5302AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC, 5303 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`], 5304 [Define 0/1 if your linker supports -pie option with copy reloc.]) 5305AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc) 5306 5307AC_MSG_CHECKING(linker EH-compatible garbage collection of sections) 5308gcc_cv_ld_eh_gc_sections=no 5309if test $in_tree_ld = yes ; then 5310 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \ 5311 && test $in_tree_ld_is_elf = yes; then 5312 gcc_cv_ld_eh_gc_sections=yes 5313 fi 5314elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then 5315 cat > conftest.s <<EOF 5316 .section .text 5317.globl _start 5318 .type _start, @function 5319_start: 5320 .long foo 5321 .size _start, .-_start 5322 .section .text.foo,"ax",@progbits 5323 .type foo, @function 5324foo: 5325 .long 0 5326 .size foo, .-foo 5327 .section .gcc_except_table.foo,"a",@progbits 5328.L0: 5329 .long 0 5330 .section .eh_frame,"a",@progbits 5331 .long .L0 5332EOF 5333 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then 5334 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \ 5335 | grep "gc-sections option ignored" > /dev/null; then 5336 gcc_cv_ld_eh_gc_sections=no 5337 elif $gcc_cv_objdump -h conftest 2> /dev/null \ 5338 | grep gcc_except_table > /dev/null; then 5339 gcc_cv_ld_eh_gc_sections=yes 5340 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections. 5341 if test x$gcc_cv_as_comdat_group != xyes; then 5342 gcc_cv_ld_eh_gc_sections=no 5343 cat > conftest.s <<EOF 5344 .section .text 5345.globl _start 5346 .type _start, @function 5347_start: 5348 .long foo 5349 .size _start, .-_start 5350 .section .gnu.linkonce.t.foo,"ax",@progbits 5351 .type foo, @function 5352foo: 5353 .long 0 5354 .size foo, .-foo 5355 .section .gcc_except_table.foo,"a",@progbits 5356.L0: 5357 .long 0 5358 .section .eh_frame,"a",@progbits 5359 .long .L0 5360EOF 5361 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then 5362 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \ 5363 | grep "gc-sections option ignored" > /dev/null; then 5364 gcc_cv_ld_eh_gc_sections=no 5365 elif $gcc_cv_objdump -h conftest 2> /dev/null \ 5366 | grep gcc_except_table > /dev/null; then 5367 gcc_cv_ld_eh_gc_sections=yes 5368 fi 5369 fi 5370 fi 5371 fi 5372 fi 5373 rm -f conftest.s conftest.o conftest 5374fi 5375case "$target" in 5376 hppa*-*-linux*) 5377 # ??? This apparently exposes a binutils bug with PC-relative relocations. 5378 gcc_cv_ld_eh_gc_sections=no 5379 ;; 5380esac 5381if test x$gcc_cv_ld_eh_gc_sections = xyes; then 5382 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1, 5383 [Define if your linker supports garbage collection of 5384 sections in presence of EH frames.]) 5385fi 5386AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections) 5387 5388AC_MSG_CHECKING(linker EH garbage collection of sections bug) 5389gcc_cv_ld_eh_gc_sections_bug=no 5390if test $in_tree_ld = yes ; then 5391 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \ 5392 && test $in_tree_ld_is_elf = yes; then 5393 gcc_cv_ld_eh_gc_sections_bug=yes 5394 fi 5395elif test x$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 5396 gcc_cv_ld_eh_gc_sections_bug=yes 5397 cat > conftest.s <<EOF 5398 .section .text 5399.globl _start 5400 .type _start, @function 5401_start: 5402 .long foo 5403 .size _start, .-_start 5404 .section .text.startup.foo,"ax",@progbits 5405 .type foo, @function 5406foo: 5407 .long 0 5408 .size foo, .-foo 5409 .section .gcc_except_table.foo,"a",@progbits 5410.L0: 5411 .long 0 5412 .section .eh_frame,"a",@progbits 5413 .long .L0 5414EOF 5415 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then 5416 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \ 5417 | grep "gc-sections option ignored" > /dev/null; then 5418 : 5419 elif $gcc_cv_objdump -h conftest 2> /dev/null \ 5420 | grep gcc_except_table > /dev/null; then 5421 gcc_cv_ld_eh_gc_sections_bug=no 5422 fi 5423 fi 5424 rm -f conftest.s conftest.o conftest 5425fi 5426if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then 5427 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1, 5428 [Define if your linker has buggy garbage collection of 5429 sections support when .text.startup.foo like sections are used.]) 5430fi 5431AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug) 5432 5433AC_MSG_CHECKING(linker for compressed debug sections) 5434# gold/gld support compressed debug sections since binutils 2.19/2.21 5435# In binutils 2.26, gld gained support for the ELF gABI format. 5436if test $in_tree_ld = yes ; then 5437 gcc_cv_ld_compress_debug=0 5438 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \ 5439 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then 5440 gcc_cv_ld_compress_debug=2 5441 gcc_cv_ld_compress_debug_option="--compress-debug-sections" 5442 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 26 -o "$gcc_cv_gld_major_version" -gt 2 \ 5443 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = no; then 5444 gcc_cv_ld_compress_debug=3 5445 gcc_cv_ld_compress_debug_option="--compress-debug-sections" 5446 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \ 5447 && test $in_tree_ld_is_elf = yes; then 5448 gcc_cv_ld_compress_debug=1 5449 fi 5450elif echo "$ld_ver" | grep GNU > /dev/null; then 5451 if test "$ld_vers_major" -lt 2 \ 5452 || test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then 5453 gcc_cv_ld_compress_debug=0 5454 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then 5455 gcc_cv_ld_compress_debug=1 5456 else 5457 gcc_cv_ld_compress_debug=3 5458 gcc_cv_ld_compress_debug_option="--compress-debug-sections" 5459 fi 5460 if test $ld_is_gold = yes; then 5461 gcc_cv_ld_compress_debug=2 5462 gcc_cv_ld_compress_debug_option="--compress-debug-sections" 5463 fi 5464else 5465changequote(,)dnl 5466 case "${target}" in 5467 *-*-solaris2*) 5468 # Introduced in Solaris 11.2. 5469 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then 5470 gcc_cv_ld_compress_debug=3 5471 gcc_cv_ld_compress_debug_option="-z compress-sections" 5472 else 5473 gcc_cv_ld_compress_debug=0 5474 fi 5475 ;; 5476 *) 5477 # Assume linkers other than GNU ld don't support compessed debug 5478 # sections. 5479 gcc_cv_ld_compress_debug=0 5480 ;; 5481 esac 5482changequote([,])dnl 5483fi 5484AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug, 5485[Define to the level of your linker's compressed debug section support.]) 5486AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option", 5487[Define to the linker option to enable compressed debug sections.]) 5488AC_MSG_RESULT($gcc_cv_ld_compress_debug) 5489 5490if test x"$ld64_flag" = x"yes"; then 5491 5492 # Set defaults for possibly untestable items. 5493 gcc_cv_ld64_export_dynamic=0 5494 5495 if test "$build" = "$host"; then 5496 darwin_try_test=1 5497 else 5498 darwin_try_test=0 5499 fi 5500 5501 # On Darwin, because of FAT library support, it is often possible to execute 5502 # exes from compatible archs even when the host differs from the build system. 5503 case "$build","$host" in 5504 x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*) 5505 darwin_try_test=1;; 5506 *) ;; 5507 esac 5508 5509 # If the configurer specified a minimum ld64 version to be supported, then use 5510 # that to determine feature support. 5511 if test x"${gcc_cv_ld64_version}" != x; then 5512 AC_MSG_CHECKING(ld64 specified version) 5513 gcc_cv_ld64_major=`echo "$gcc_cv_ld64_version" | sed -e 's/\..*//'` 5514 AC_MSG_RESULT($gcc_cv_ld64_major) 5515 if test "$gcc_cv_ld64_major" -ge 236; then 5516 gcc_cv_ld64_export_dynamic=1 5517 fi 5518 elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then 5519 # If the version was not specified, try to find it. 5520 AC_MSG_CHECKING(linker version) 5521 if test x"${gcc_cv_ld64_version}" = x; then 5522 gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | grep ld64 | sed s/.*ld64-// | awk '{print $1}'` 5523 fi 5524 AC_MSG_RESULT($gcc_cv_ld64_version) 5525 5526 AC_MSG_CHECKING(linker for -export_dynamic support) 5527 gcc_cv_ld64_export_dynamic=1 5528 if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then 5529 gcc_cv_ld64_export_dynamic=0 5530 fi 5531 AC_MSG_RESULT($gcc_cv_ld64_export_dynamic) 5532 fi 5533 5534 if test x"${gcc_cv_ld64_version}" != x; then 5535 AC_DEFINE_UNQUOTED(LD64_VERSION, "${gcc_cv_ld64_version}", 5536 [Define to ld64 version.]) 5537 fi 5538 5539 AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic, 5540 [Define to 1 if ld64 supports '-export_dynamic'.]) 5541fi 5542 5543# -------- 5544# UNSORTED 5545# -------- 5546 5547AC_CACHE_CHECK(linker --as-needed support, 5548gcc_cv_ld_as_needed, 5549[gcc_cv_ld_as_needed=no 5550gcc_cv_ld_as_needed_option='--as-needed' 5551gcc_cv_ld_no_as_needed_option='--no-as-needed' 5552if test $in_tree_ld = yes ; then 5553 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \ 5554 && test $in_tree_ld_is_elf = yes; then 5555 gcc_cv_ld_as_needed=yes 5556 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 28; then 5557 gcc_cv_ld_as_needed_option='--push-state --as-needed' 5558 gcc_cv_ld_no_as_needed_option='--pop-state' 5559 fi 5560 fi 5561elif test x$gcc_cv_ld != x; then 5562 # Check if linker supports --as-needed and --no-as-needed options 5563 if $gcc_cv_ld --help 2>&1 | grep as-needed > /dev/null; then 5564 gcc_cv_ld_as_needed=yes 5565 if $gcc_cv_ld --help 2>&1 | grep push-state > /dev/null \ 5566 && $gcc_cv_ld --help 2>&1 | grep pop-state > /dev/null \ 5567 && echo "$ld_ver" | grep GNU > /dev/null \ 5568 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 28; then 5569 # Use these options only when both ld.bfd and ld.gold support 5570 # --push-state/--pop-state, which unfortunately wasn't added 5571 # at the same time. 5572 gcc_cv_ld_as_needed_option='--push-state --as-needed' 5573 gcc_cv_ld_no_as_needed_option='--pop-state' 5574 fi 5575 fi 5576 case "$target:$gnu_ld" in 5577 *-*-solaris2*:no) 5578 # Solaris 2 ld always supports -z ignore/-z record. Prefer the native 5579 # forms. 5580 gcc_cv_ld_as_needed=yes 5581 gcc_cv_ld_as_needed_option="-z ignore" 5582 gcc_cv_ld_no_as_needed_option="-z record" 5583 ;; 5584 esac 5585fi 5586# --as-needed/-z ignore can only be used if libgcc_s.so.1 uses 5587# dl_iterate_phdr, i.e. since Solaris 11. 5588case "$target" in 5589 *-*-solaris2.1[[1-9]]*) 5590 case "$target" in 5591 i?86-*-* | x86_64-*-*) 5592 if echo "$ld_ver" | grep GNU > /dev/null; then 5593 # Doesn't work with gld on Solaris/x86 due to PR ld/12320. 5594 gcc_cv_ld_as_needed=no 5595 fi 5596 ;; 5597 esac 5598 ;; 5599 *-*-solaris2*) 5600 gcc_cv_ld_as_needed=no 5601 ;; 5602esac 5603]) 5604if test x"$gcc_cv_ld_as_needed" = xyes; then 5605 AC_DEFINE(HAVE_LD_AS_NEEDED, 1, 5606[Define if your linker supports --as-needed/--no-as-needed or equivalent options.]) 5607 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option", 5608[Define to the linker option to ignore unused dependencies.]) 5609 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option", 5610[Define to the linker option to keep unused dependencies.]) 5611fi 5612 5613AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities) 5614saved_LDFLAGS="$LDFLAGS" 5615for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do 5616 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map" 5617 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])], 5618 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no]) 5619done 5620LDFLAGS="$saved_LDFLAGS" 5621if test "x$gcc_cv_ld_clearcap" = xyes; then 5622 AC_DEFINE([HAVE_LD_CLEARCAP], 1, 5623[Define if the linker supports clearing hardware capabilities via mapfile.]) 5624 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map]) 5625fi 5626AC_MSG_RESULT($gcc_cv_ld_clearcap) 5627 5628case "$target" in 5629 powerpc*-*-*) 5630 case "$target" in 5631 *le-*-linux*) 5632 emul_name="-melf32lppc" 5633 ;; 5634 *) 5635 emul_name="-melf32ppc" 5636 ;; 5637 esac 5638 AC_CACHE_CHECK(linker .gnu.attributes long double support, 5639 gcc_cv_ld_ppc_attr, 5640 [gcc_cv_ld_ppc_attr=no 5641 if test x"$ld_is_gold" = xyes; then 5642 gcc_cv_ld_ppc_attr=yes 5643 elif test $in_tree_ld = yes ; then 5644 if test "$gcc_cv_gld_major_version" -eq 2 \ 5645 -a "$gcc_cv_gld_minor_version" -ge 28 \ 5646 -o "$gcc_cv_gld_major_version" -gt 2; then 5647 gcc_cv_ld_ppc_attr=yes 5648 fi 5649 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then 5650 # check that merging the long double .gnu_attribute doesn't warn 5651 cat > conftest1.s <<EOF 5652 .gnu_attribute 4,1 5653EOF 5654 cat > conftest2.s <<EOF 5655 .gnu_attribute 4,9 5656EOF 5657 if $gcc_cv_as -a32 -o conftest1.o conftest1.s > /dev/null 2>&1 \ 5658 && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \ 5659 && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \ 5660 && test ! -s conftest.err; then 5661 gcc_cv_ld_ppc_attr=yes 5662 fi 5663 rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s 5664 fi 5665 ]) 5666 if test x$gcc_cv_ld_ppc_attr = xyes; then 5667 AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1, 5668 [Define if your PowerPC linker has .gnu.attributes long double support.]) 5669 fi 5670 ;; 5671esac 5672 5673case "$target:$tm_file" in 5674 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*) 5675 case "$target" in 5676 *le-*-linux*) 5677 emul_name="-melf64lppc" 5678 ;; 5679 *-*-linux*) 5680 emul_name="-melf64ppc" 5681 ;; 5682 *le-*-freebsd*) 5683 emul_name="-melf64lppc_fbsd" 5684 ;; 5685 *-*-freebsd*) 5686 emul_name="-melf64ppc_fbsd" 5687 ;; 5688 esac 5689 AC_CACHE_CHECK(linker support for omitting dot symbols, 5690 gcc_cv_ld_no_dot_syms, 5691 [gcc_cv_ld_no_dot_syms=no 5692 if test x"$ld_is_gold" = xyes; then 5693 gcc_cv_ld_no_dot_syms=yes 5694 elif test $in_tree_ld = yes ; then 5695 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then 5696 gcc_cv_ld_no_dot_syms=yes 5697 fi 5698 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then 5699 cat > conftest1.s <<EOF 5700 .text 5701 bl .foo 5702EOF 5703 cat > conftest2.s <<EOF 5704 .section ".opd","aw" 5705 .align 3 5706 .globl foo 5707 .type foo,@function 5708foo: 5709 .quad .LEfoo,.TOC.@tocbase,0 5710 .text 5711.LEfoo: 5712 blr 5713 .size foo,.-.LEfoo 5714EOF 5715 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \ 5716 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \ 5717 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then 5718 gcc_cv_ld_no_dot_syms=yes 5719 fi 5720 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s 5721 fi 5722 ]) 5723 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then 5724 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1, 5725 [Define if your PowerPC64 linker only needs function descriptor syms.]) 5726 fi 5727 5728 AC_CACHE_CHECK(linker large toc support, 5729 gcc_cv_ld_large_toc, 5730 [gcc_cv_ld_large_toc=no 5731 if test x"$ld_is_gold" = xyes; then 5732 gcc_cv_ld_large_toc=yes 5733 elif test $in_tree_ld = yes ; then 5734 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then 5735 gcc_cv_ld_large_toc=yes 5736 fi 5737 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then 5738 cat > conftest.s <<EOF 5739 .section ".tbss","awT",@nobits 5740 .align 3 5741ie0: .space 8 5742 .global _start 5743 .text 5744_start: 5745 addis 9,13,ie0@got@tprel@ha 5746 ld 9,ie0@got@tprel@l(9) 5747EOF 5748 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \ 5749 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then 5750 gcc_cv_ld_large_toc=yes 5751 fi 5752 rm -f conftest conftest.o conftest.s 5753 fi 5754 ]) 5755 if test x"$gcc_cv_ld_large_toc" = xyes; then 5756 AC_DEFINE(HAVE_LD_LARGE_TOC, 1, 5757 [Define if your PowerPC64 linker supports a large TOC.]) 5758 fi 5759 5760 AC_CACHE_CHECK(linker toc pointer alignment, 5761 gcc_cv_ld_toc_align, 5762 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then 5763 cat > conftest.s <<EOF 5764 .global _start 5765 .text 5766_start: 5767 addis 9,2,x@got@ha 5768 .section .data.rel.ro,"aw",@progbits 5769 .p2align 16 5770 .space 32768 5771x: .quad .TOC. 5772EOF 5773 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \ 5774 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then 5775 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'` 5776 fi 5777 rm -f conftest conftest.o conftest.s 5778 fi 5779 ]) 5780 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then 5781 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align, 5782 [Define to .TOC. alignment forced by your linker.]) 5783 fi 5784 ;; 5785esac 5786 5787case "$target" in 5788 *-*-aix*) 5789 AC_CACHE_CHECK(linker large toc support, 5790 gcc_cv_ld_large_toc, 5791 [gcc_cv_ld_large_toc=no 5792 if test x$gcc_cv_as != x ; then 5793 cat > conftest.s <<EOF 5794 .toc 5795LC..1: 5796 .tc a[[TC]],a[[RW]] 5797 .extern a[[RW]] 5798 .csect .text[[PR]] 5799.largetoctest: 5800 addis 9,LC..1@u(2) 5801 ld 3,LC..1@l(9) 5802EOF 5803 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then 5804 gcc_cv_ld_large_toc=yes 5805 fi 5806 rm -f conftest conftest.o conftest.s 5807 fi 5808 ]) 5809 if test x"$gcc_cv_ld_large_toc" = xyes; then 5810 AC_DEFINE(HAVE_LD_LARGE_TOC, 1, 5811 [Define if your PowerPC64 linker supports a large TOC.]) 5812 fi 5813 ;; 5814esac 5815 5816AC_CACHE_CHECK(linker --build-id support, 5817 gcc_cv_ld_buildid, 5818 [gcc_cv_ld_buildid=no 5819 if test $in_tree_ld = yes ; then 5820 if test "$gcc_cv_gld_major_version" -eq 2 -a \ 5821 "$gcc_cv_gld_minor_version" -ge 18 -o \ 5822 "$gcc_cv_gld_major_version" -gt 2 \ 5823 && test $in_tree_ld_is_elf = yes; then 5824 gcc_cv_ld_buildid=yes 5825 fi 5826 elif test x$gcc_cv_ld != x; then 5827 if $gcc_cv_ld --help 2>&1 | grep build-id > /dev/null; then 5828 gcc_cv_ld_buildid=yes 5829 fi 5830 fi]) 5831if test x"$gcc_cv_ld_buildid" = xyes; then 5832 AC_DEFINE(HAVE_LD_BUILDID, 1, 5833 [Define if your linker supports --build-id.]) 5834fi 5835 5836AC_ARG_ENABLE(linker-build-id, 5837[AS_HELP_STRING([--enable-linker-build-id], 5838 [compiler will always pass --build-id to linker])], 5839[], 5840enable_linker_build_id=no) 5841 5842if test x"$enable_linker_build_id" = xyes; then 5843 if test x"$gcc_cv_ld_buildid" = xyes; then 5844 AC_DEFINE(ENABLE_LD_BUILDID, 1, 5845 [Define if gcc should always pass --build-id to linker.]) 5846 else 5847 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored) 5848 fi 5849fi 5850 5851# In binutils 2.21, GNU ld gained support for new emulations fully 5852# supporting the Solaris 2 ABI. Detect their presence in the linker used. 5853AC_CACHE_CHECK(linker *_sol2 emulation support, 5854 gcc_cv_ld_sol2_emulation, 5855 [gcc_cv_ld_sol2_emulation=no 5856 if test $in_tree_ld = yes ; then 5857 if test "$gcc_cv_gld_major_version" -eq 2 -a \ 5858 "$gcc_cv_gld_minor_version" -ge 21 -o \ 5859 "$gcc_cv_gld_major_version" -gt 2 \ 5860 && test $in_tree_ld_is_elf = yes; then 5861 gcc_cv_ld_sol2_emulation=yes 5862 fi 5863 elif test x$gcc_cv_ld != x; then 5864 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \ 5865 grep _sol2 > /dev/null; then 5866 gcc_cv_ld_sol2_emulation=yes 5867 fi 5868 fi]) 5869if test x"$gcc_cv_ld_sol2_emulation" = xyes; then 5870 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1, 5871 [Define if your linker supports the *_sol2 emulations.]) 5872fi 5873 5874AC_CACHE_CHECK(linker --sysroot support, 5875 gcc_cv_ld_sysroot, 5876 [gcc_cv_ld_sysroot=no 5877 if test $in_tree_ld = yes ; then 5878 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then 5879 gcc_cv_ld_sysroot=yes 5880 fi 5881 elif test x$gcc_cv_ld != x; then 5882 if $gcc_cv_ld --help 2>&1 | grep sysroot > /dev/null; then 5883 gcc_cv_ld_sysroot=yes 5884 fi 5885 fi]) 5886if test x"$gcc_cv_ld_sysroot" = xyes; then 5887 AC_DEFINE(HAVE_LD_SYSROOT, 1, 5888 [Define if your linker supports --sysroot.]) 5889fi 5890 5891case $target in 5892*-*-solaris2*) 5893 # Check for system-provided CRTs on Solaris 11.x and Solaris 12. 5894 AC_CACHE_CHECK([system-provided CRTs on Solaris], 5895 gcc_cv_solaris_crts, 5896 [gcc_cv_solaris_crts=no 5897 if test x$host != x$target; then 5898 if test "x$with_sysroot" = xyes; then 5899 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root" 5900 else 5901 target_sysroot="${with_sysroot}" 5902 fi 5903 fi 5904 target_libdir="$target_sysroot/usr/lib" 5905 # At the time they were added, gcrt1.o became a symlink for backwards 5906 # compatibility on x86, while crt1.o was added on sparc, so check for that. 5907 case $target in 5908 i?86-*-solaris2* | x86_64-*-solaris2*) 5909 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi 5910 ;; 5911 sparc*-*-solaris2*) 5912 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi 5913 ;; 5914 esac]) 5915 ;; 5916esac 5917if test x$gcc_cv_solaris_crts = xyes; then 5918 AC_DEFINE(HAVE_SOLARIS_CRTS, 1, 5919 [Define if the system-provided CRTs are present on Solaris.]) 5920fi 5921 5922AC_ARG_ENABLE(libssp, 5923[AS_HELP_STRING([--enable-libssp], [enable linking against libssp])], 5924[case "${enableval}" in 5925 yes|no) 5926 ;; 5927 *) 5928 AC_MSG_ERROR([unknown libssp setting $enableval]) 5929 ;; 5930esac], []) 5931 5932# Test for stack protector support in target C library. 5933AC_CACHE_CHECK(__stack_chk_fail in target C library, 5934 gcc_cv_libc_provides_ssp, 5935 [gcc_cv_libc_provides_ssp=no 5936 if test "x$enable_libssp" = "xno"; then 5937 gcc_cv_libc_provides_ssp=yes 5938 elif test "x$enable_libssp" = "xyes"; then 5939 gcc_cv_libc_provides_ssp=no 5940 else 5941 case "$target" in 5942 *-*-musl*) 5943 # All versions of musl provide stack protector 5944 gcc_cv_libc_provides_ssp=yes;; 5945 *-*-linux* | *-*-kfreebsd*-gnu) 5946 # glibc 2.4 and later provides __stack_chk_fail and 5947 # either __stack_chk_guard, or TLS access to stack guard canary. 5948 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [ 5949 [if test -f $target_header_dir/features.h \ 5950 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \ 5951 $target_header_dir/features.h > /dev/null; then 5952 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \ 5953 $target_header_dir/features.h > /dev/null && \ 5954 test -f $target_header_dir/bits/uClibc_config.h && \ 5955 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \ 5956 $target_header_dir/bits/uClibc_config.h > /dev/null; then 5957 gcc_cv_libc_provides_ssp=yes 5958 fi 5959 # all versions of Bionic support stack protector 5960 elif test -f $target_header_dir/sys/cdefs.h \ 5961 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \ 5962 $target_header_dir/sys/cdefs.h > /dev/null; then 5963 gcc_cv_libc_provides_ssp=yes 5964 fi]]) 5965 ;; 5966 *-*-gnu*) 5967 # Avoid complicated tests (see 5968 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now 5969 # simply assert that glibc does provide this, which is true for all 5970 # realistically usable GNU/Hurd configurations. 5971 # All supported versions of musl provide it as well 5972 gcc_cv_libc_provides_ssp=yes;; 5973 *-*-darwin* | *-*-freebsd* | *-*-netbsd*) 5974 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes], 5975 [echo "no __stack_chk_fail on this target"]) 5976 ;; 5977 *) gcc_cv_libc_provides_ssp=no ;; 5978 esac 5979 fi]) 5980 5981if test x$gcc_cv_libc_provides_ssp = xyes; then 5982 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1, 5983 [Define if your target C library provides stack protector support]) 5984fi 5985 5986# Check whether --enable-default-ssp was given. 5987AC_ARG_ENABLE(default-ssp, 5988[AS_HELP_STRING([--enable-default-ssp], 5989 [enable Stack Smashing Protection as default])],[ 5990if test x$gcc_cv_libc_provides_ssp = xyes; then 5991 case "$target" in 5992 ia64*-*-*) enable_default_ssp=no ;; 5993 *) enable_default_ssp=$enableval ;; 5994 esac 5995else 5996 enable_default_ssp=no 5997fi], 5998enable_default_ssp=no) 5999if test x$enable_default_ssp = xyes ; then 6000 AC_DEFINE(ENABLE_DEFAULT_SSP, 1, 6001 [Define if your target supports default stack protector and it is enabled.]) 6002fi 6003AC_SUBST([enable_default_ssp]) 6004 6005# Test for <sys/sdt.h> on the target. 6006GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H]) 6007AC_MSG_CHECKING(sys/sdt.h in the target C library) 6008have_sys_sdt_h=no 6009if test -f $target_header_dir/sys/sdt.h; then 6010 have_sys_sdt_h=yes 6011 AC_DEFINE(HAVE_SYS_SDT_H, 1, 6012 [Define if your target C library provides sys/sdt.h]) 6013fi 6014AC_MSG_RESULT($have_sys_sdt_h) 6015 6016# Check if TFmode long double should be used by default or not. 6017# Some glibc targets used DFmode long double, but with glibc 2.4 6018# and later they can use TFmode. 6019case "$target" in 6020 powerpc*-*-linux* | \ 6021 sparc*-*-linux* | \ 6022 s390*-*-linux* | \ 6023 alpha*-*-linux*) 6024 AC_ARG_WITH(long-double-128, 6025 [AS_HELP_STRING([--with-long-double-128], 6026 [use 128-bit long double by default])], 6027 gcc_cv_target_ldbl128="$with_long_double_128", 6028 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [ 6029 [gcc_cv_target_ldbl128=no 6030 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \ 6031 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \ 6032 && gcc_cv_target_ldbl128=yes 6033 ]])]) 6034 ;; 6035esac 6036if test x$gcc_cv_target_ldbl128 = xyes; then 6037 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1, 6038 [Define if TFmode long double should be the default]) 6039fi 6040 6041# Check if TFmode long double target should use the IBM extended double or IEEE 6042# 128-bit floating point formats if long doubles are 128-bits long. The long 6043# double type can only be switched on powerpc64 bit Linux systems where VSX is 6044# supported. Other PowerPC systems do not build the IEEE 128-bit emulator in 6045# libgcc. 6046AC_ARG_WITH([long-double-format], 6047 [AS_HELP_STRING([--with-long-double-format={ieee,ibm}] 6048 [Specify whether PowerPC long double uses IEEE or IBM format])],[ 6049case "$target:$with_long_double_format" in 6050 powerpc64le-*-linux*:ieee | powerpc64le-*-linux*:ibm) 6051 : 6052 ;; 6053 powerpc64-*-linux*:ieee | powerpc64-*-linux*:ibm) 6054 # IEEE 128-bit emulation is only built on 64-bit VSX Linux systems 6055 case "$with_cpu" in 6056 power7 | power8 | power9 | power1*) 6057 : 6058 ;; 6059 *) 6060 AC_MSG_ERROR([Configuration option --with-long-double-format is only \ 6061supported if the default cpu is power7 or newer]) 6062 with_long_double_format="" 6063 ;; 6064 esac 6065 ;; 6066 xpowerpc64*-*-linux*:*) 6067 AC_MSG_ERROR([--with-long-double-format argument should be ibm or ieee]) 6068 with_long_double_format="" 6069 ;; 6070 *) 6071 AC_MSG_ERROR([Configure option --with-long-double-format is only supported \ 6072on 64-bit PowerPC VSX Linux systems]) 6073 with_long_double_format="" 6074 ;; 6075esac], 6076 []) 6077 6078# Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP 6079# values in the TCB. Currently, only GLIBC 2.23 and later support this. 6080gcc_cv_libc_provides_hwcap_in_tcb=no 6081case "$target" in 6082 powerpc*-*-linux*) 6083 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], ) 6084 ;; 6085esac 6086if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then 6087 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1, 6088 [Define if your target C Library provides the AT_HWCAP value in the TCB]) 6089fi 6090 6091AC_MSG_CHECKING(dl_iterate_phdr in target C library) 6092gcc_cv_target_dl_iterate_phdr=unknown 6093case "$target" in 6094 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes 6095 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in 6096 # libdl there, both complicating its use and breaking compatibility 6097 # between Solaris 10 updates. 6098 *-*-solaris2.1[[1-9]]*) 6099 # <link.h> needs both a dl_iterate_phdr declaration and support for 6100 # compilation with largefile support. 6101 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \ 6102 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then 6103 gcc_cv_target_dl_iterate_phdr=yes 6104 else 6105 gcc_cv_target_dl_iterate_phdr=no 6106 fi 6107 ;; 6108 *-*-dragonfly* | *-*-freebsd*) 6109 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then 6110 gcc_cv_target_dl_iterate_phdr=yes 6111 else 6112 gcc_cv_target_dl_iterate_phdr=no 6113 fi 6114 ;; 6115 *-linux-musl*) 6116 gcc_cv_target_dl_iterate_phdr=yes 6117 ;; 6118esac 6119GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR]) 6120if test x$gcc_cv_target_dl_iterate_phdr = xyes; then 6121 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1, 6122[Define if your target C library provides the `dl_iterate_phdr' function.]) 6123fi 6124AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr) 6125 6126# We no longer support different GC mechanisms. Emit an error if 6127# the user configures with --with-gc. 6128AC_ARG_WITH(gc, 6129[AS_HELP_STRING([--with-gc={page,zone}], 6130 [this option is not supported anymore. It used to choose 6131 the garbage collection mechanism to use with the compiler])], 6132[AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])], 6133[]) 6134 6135# Libraries to use on the host. This will normally be set by the top 6136# level Makefile. Here we simply capture the value for our Makefile. 6137if test -z "${HOST_LIBS+set}"; then 6138 HOST_LIBS= 6139fi 6140AC_SUBST(HOST_LIBS) 6141 6142# Use the system's zlib library. 6143AM_ZLIB 6144 6145dnl Very limited version of automake's enable-maintainer-mode 6146 6147AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles]) 6148 dnl maintainer-mode is disabled by default 6149 AC_ARG_ENABLE(maintainer-mode, 6150[AS_HELP_STRING([--enable-maintainer-mode], 6151 [enable make rules and dependencies not useful 6152 (and sometimes confusing) to the casual installer])], 6153 maintainer_mode=$enableval, 6154 maintainer_mode=no) 6155 6156AC_MSG_RESULT($maintainer_mode) 6157 6158if test "$maintainer_mode" = "yes"; then 6159 MAINT='' 6160else 6161 MAINT='#' 6162fi 6163AC_SUBST(MAINT)dnl 6164 6165dnl Whether to prevent multiple front-ends from linking at the same time 6166 6167AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once]) 6168 AC_ARG_ENABLE(link-mutex, 6169[AS_HELP_STRING([--enable-link-mutex], 6170 [avoid linking multiple front-ends at once to avoid thrashing 6171 on the build machine])], 6172 do_link_mutex=$enableval, 6173 do_link_mutex=no) 6174AC_MSG_RESULT($do_link_mutex) 6175 6176if test "$do_link_mutex" = "yes"; then 6177 DO_LINK_MUTEX=true 6178else 6179 DO_LINK_MUTEX=false 6180fi 6181AC_SUBST(DO_LINK_MUTEX) 6182 6183# -------------- 6184# Language hooks 6185# -------------- 6186 6187# Make empty files to contain the specs and options for each language. 6188# Then add #include lines to for a compiler that has specs and/or options. 6189 6190subdirs= 6191lang_opt_files= 6192lang_specs_files= 6193lang_tree_files= 6194# These (without "all_") are set in each config-lang.in. 6195# `language' must be a single word so is spelled singularly. 6196all_languages= 6197all_compilers= 6198all_outputs='Makefile' 6199# List of language configure and makefile fragments. 6200all_lang_configurefrags= 6201all_lang_makefrags= 6202# Additional files for gengtype 6203all_gtfiles="$target_gtfiles" 6204 6205# These are the languages that are set in --enable-languages, 6206# and are available in the GCC tree. 6207all_selected_languages= 6208 6209# Add the language fragments. 6210# Languages are added via two mechanisms. Some information must be 6211# recorded in makefile variables, these are defined in config-lang.in. 6212# We accumulate them and plug them into the main Makefile. 6213# The other mechanism is a set of hooks for each of the main targets 6214# like `clean', `install', etc. 6215 6216language_hooks="Make-hooks" 6217 6218for lang in ${srcdir}/*/config-lang.in 6219do 6220changequote(,)dnl 6221 test "$lang" = "${srcdir}/*/config-lang.in" && continue 6222 6223 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang` 6224 if test "x$lang_alias" = x 6225 then 6226 echo "$lang doesn't set \$language." 1>&2 6227 exit 1 6228 fi 6229 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`" 6230 subdirs="$subdirs $subdir" 6231 6232 # $gcc_subdir is where the gcc integration files are to be found 6233 # for a language, both for internal compiler purposes (compiler 6234 # sources implementing front-end to GCC tree converters), and for 6235 # build infrastructure purposes (Make-lang.in, etc.) 6236 # 6237 # This will be <subdir> (relative to $srcdir) if a line like 6238 # gcc_subdir="<subdir>" or gcc_subdir=<subdir> 6239 # is found in <langdir>/config-lang.in, and will remain <langdir> 6240 # otherwise. 6241 # 6242 # Except for the language alias (fetched above), the regular 6243 # "config-lang.in" contents are always retrieved from $gcc_subdir, 6244 # so a <langdir>/config-lang.in setting gcc_subdir typically sets 6245 # only this and the language alias. 6246 6247 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang` 6248 if [ "$gcc_subdir" = "" ]; then 6249 gcc_subdir="$subdir" 6250 fi 6251 6252 case ",$enable_languages," in 6253 *,$lang_alias,*) 6254 all_selected_languages="$all_selected_languages $lang_alias" 6255 if test -f $srcdir/$gcc_subdir/lang-specs.h; then 6256 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h" 6257 fi 6258 ;; 6259 esac 6260changequote([,])dnl 6261 6262 language= 6263 boot_language= 6264 compilers= 6265 outputs= 6266 gtfiles= 6267 subdir_requires= 6268 . ${srcdir}/$gcc_subdir/config-lang.in 6269 if test "x$language" = x 6270 then 6271 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2 6272 exit 1 6273 fi 6274 6275 ok=: 6276 case ",$enable_languages," in 6277 *,$lang_alias,*) ;; 6278 *) 6279 for i in $subdir_requires; do 6280 test -f "${srcdir}/$i/config-lang.in" && continue 6281 ok=false 6282 break 6283 done 6284 ;; 6285 esac 6286 $ok || continue 6287 6288 all_lang_configurefrags="$all_lang_configurefrags \$(srcdir)/$gcc_subdir/config-lang.in" 6289 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in" 6290 if test -f $srcdir/$gcc_subdir/lang.opt; then 6291 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt" 6292 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt" 6293 fi 6294 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then 6295 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def" 6296 fi 6297 all_languages="$all_languages $language" 6298 all_compilers="$all_compilers $compilers" 6299 all_outputs="$all_outputs $outputs" 6300 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles" 6301 case ",$enable_languages," in 6302 *,lto,*) 6303 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.]) 6304 enable_lto=yes 6305 AC_SUBST(enable_lto) 6306 ;; 6307 *) ;; 6308 esac 6309done 6310 6311check_languages= 6312for language in $all_selected_languages 6313do 6314 check_languages="$check_languages check-$language" 6315done 6316 6317selftest_languages= 6318for language in $all_selected_languages 6319do 6320 selftest_languages="$selftest_languages selftest-$language" 6321done 6322 6323# We link each language in with a set of hooks, reached indirectly via 6324# lang.${target}. Only do so for selected languages. 6325 6326rm -f Make-hooks 6327touch Make-hooks 6328target_list="all.cross start.encap rest.encap tags \ 6329 install-common install-man install-info install-pdf install-html dvi \ 6330 pdf html uninstall info man srcextra srcman srcinfo \ 6331 mostlyclean clean distclean maintainer-clean install-plugin" 6332 6333for t in $target_list 6334do 6335 x= 6336 for lang in $all_selected_languages 6337 do 6338 x="$x $lang.$t" 6339 done 6340 echo "lang.$t: $x" >> Make-hooks 6341done 6342 6343# -------- 6344# Option include files 6345# -------- 6346 6347${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk 6348option_includes="option-includes.mk" 6349AC_SUBST_FILE(option_includes) 6350 6351# -------- 6352# UNSORTED 6353# -------- 6354 6355# Create .gdbinit. 6356 6357echo "dir ." > .gdbinit 6358echo "dir ${srcdir}" >> .gdbinit 6359if test x$gdb_needs_out_file_path = xyes 6360then 6361 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit 6362fi 6363if test "x$subdirs" != x; then 6364 for s in $subdirs 6365 do 6366 echo "dir ${srcdir}/$s" >> .gdbinit 6367 done 6368fi 6369echo "source ${srcdir}/gdbinit.in" >> .gdbinit 6370echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit 6371 6372# Put a breakpoint on __asan_report_error to help with debugging buffer 6373# overflow. 6374case "$CFLAGS" in 6375*-fsanitize=address*) 6376 echo "source ${srcdir}/gdbasan.in" >> .gdbinit 6377 ;; 6378esac 6379 6380gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)' 6381AC_SUBST(gcc_tooldir) 6382AC_SUBST(dollar) 6383 6384# Find a directory in which to install a shared libgcc. 6385 6386AC_ARG_ENABLE(version-specific-runtime-libs, 6387[AS_HELP_STRING([--enable-version-specific-runtime-libs], 6388 [specify that runtime libraries should be 6389 installed in a compiler-specific directory])]) 6390 6391# Substitute configuration variables 6392AC_SUBST(subdirs) 6393AC_SUBST(srcdir) 6394AC_SUBST(all_compilers) 6395AC_SUBST(all_gtfiles) 6396AC_SUBST(all_lang_configurefrags) 6397AC_SUBST(all_lang_makefrags) 6398AC_SUBST(all_languages) 6399AC_SUBST(all_selected_languages) 6400AC_SUBST(build_exeext) 6401AC_SUBST(build_install_headers_dir) 6402AC_SUBST(build_xm_file_list) 6403AC_SUBST(build_xm_include_list) 6404AC_SUBST(build_xm_defines) 6405AC_SUBST(build_file_translate) 6406AC_SUBST(check_languages) 6407AC_SUBST(selftest_languages) 6408AC_SUBST(cpp_install_dir) 6409AC_SUBST(xmake_file) 6410AC_SUBST(tmake_file) 6411AC_SUBST(TM_ENDIAN_CONFIG) 6412AC_SUBST(TM_MULTILIB_CONFIG) 6413AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG) 6414AC_SUBST(extra_gcc_objs) 6415AC_SUBST(user_headers_inc_next_pre) 6416AC_SUBST(user_headers_inc_next_post) 6417AC_SUBST(extra_headers_list) 6418AC_SUBST(extra_objs) 6419AC_SUBST(extra_programs) 6420AC_SUBST(float_h_file) 6421AC_SUBST(gcc_config_arguments) 6422AC_SUBST(gcc_gxx_include_dir) 6423AC_SUBST(gcc_gxx_include_dir_add_sysroot) 6424AC_SUBST(host_exeext) 6425AC_SUBST(host_xm_file_list) 6426AC_SUBST(host_xm_include_list) 6427AC_SUBST(host_xm_defines) 6428AC_SUBST(out_host_hook_obj) 6429AC_SUBST(install) 6430AC_SUBST(lang_opt_files) 6431AC_SUBST(lang_specs_files) 6432AC_SUBST(lang_tree_files) 6433AC_SUBST(local_prefix) 6434AC_SUBST(md_file) 6435AC_SUBST(objc_boehm_gc) 6436AC_SUBST(out_file) 6437AC_SUBST(out_object_file) 6438AC_SUBST(common_out_file) 6439AC_SUBST(common_out_object_file) 6440AC_SUBST(tm_file_list) 6441AC_SUBST(tm_include_list) 6442AC_SUBST(tm_defines) 6443AC_SUBST(tm_p_file_list) 6444AC_SUBST(tm_p_include_list) 6445AC_SUBST(tm_d_file_list) 6446AC_SUBST(tm_d_include_list) 6447AC_SUBST(xm_file_list) 6448AC_SUBST(xm_include_list) 6449AC_SUBST(xm_defines) 6450AC_SUBST(use_gcc_stdint) 6451AC_SUBST(c_target_objs) 6452AC_SUBST(cxx_target_objs) 6453AC_SUBST(fortran_target_objs) 6454AC_SUBST(d_target_objs) 6455AC_SUBST(target_cpu_default) 6456 6457AC_SUBST_FILE(language_hooks) 6458 6459# Echo link setup. 6460if test x${build} = x${host} ; then 6461 if test x${host} = x${target} ; then 6462 echo "Links are now set up to build a native compiler for ${target}." 1>&2 6463 else 6464 echo "Links are now set up to build a cross-compiler" 1>&2 6465 echo " from ${host} to ${target}." 1>&2 6466 fi 6467else 6468 if test x${host} = x${target} ; then 6469 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2 6470 echo " for ${target}." 1>&2 6471 else 6472 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2 6473 echo " from ${host} to ${target}." 1>&2 6474 fi 6475fi 6476 6477AC_ARG_VAR(GMPLIBS,[How to link GMP]) 6478AC_ARG_VAR(GMPINC,[How to find GMP include files]) 6479 6480AC_ARG_VAR(ISLLIBS,[How to link isl]) 6481AC_ARG_VAR(ISLINC,[How to find isl include files]) 6482if test "x${ISLLIBS}" != "x" ; then 6483 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.]) 6484fi 6485 6486GCC_ENABLE_PLUGINS 6487AC_SUBST(pluginlibs) 6488AC_SUBST(enable_plugin) 6489if test x"$enable_plugin" = x"yes"; then 6490 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.]) 6491fi 6492 6493 6494# Enable --enable-host-shared 6495AC_ARG_ENABLE(host-shared, 6496[AS_HELP_STRING([--enable-host-shared], 6497 [build host code as shared libraries])], 6498[PICFLAG=-fPIC], [PICFLAG=]) 6499AC_SUBST(enable_host_shared) 6500AC_SUBST(PICFLAG) 6501 6502 6503AC_ARG_ENABLE(libquadmath-support, 6504[AS_HELP_STRING([--disable-libquadmath-support], 6505 [disable libquadmath support for Fortran])], 6506ENABLE_LIBQUADMATH_SUPPORT=$enableval, 6507ENABLE_LIBQUADMATH_SUPPORT=yes) 6508if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then 6509 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1, 6510 [Define to 1 to enable libquadmath support]) 6511fi 6512 6513 6514# Specify what hash style to use by default. 6515AC_ARG_WITH([linker-hash-style], 6516[AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}], 6517 [specify the linker hash style])], 6518[case x"$withval" in 6519 xsysv) 6520 LINKER_HASH_STYLE=sysv 6521 ;; 6522 xgnu) 6523 LINKER_HASH_STYLE=gnu 6524 ;; 6525 xboth) 6526 LINKER_HASH_STYLE=both 6527 ;; 6528 *) 6529 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style]) 6530 ;; 6531 esac], 6532[LINKER_HASH_STYLE='']) 6533if test x"${LINKER_HASH_STYLE}" != x; then 6534 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE", 6535 [The linker hash style]) 6536fi 6537 6538# Specify what should be the default of -fdiagnostics-color option. 6539AC_ARG_WITH([diagnostics-color], 6540[AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}], 6541 [specify the default of -fdiagnostics-color option 6542 auto-if-env stands for -fdiagnostics-color=auto if 6543 GCC_COLOR environment variable is present and 6544 -fdiagnostics-color=never otherwise])], 6545[case x"$withval" in 6546 xnever) 6547 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO 6548 ;; 6549 xauto) 6550 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO 6551 ;; 6552 xauto-if-env) 6553 DIAGNOSTICS_COLOR_DEFAULT=-1 6554 ;; 6555 xalways) 6556 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES 6557 ;; 6558 *) 6559 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color]) 6560 ;; 6561 esac], 6562[DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO]) 6563AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT, 6564 [The default for -fdiagnostics-color option]) 6565 6566# Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit 6567# of jit/jit-playback.c. 6568gcc_driver_version=`eval "${get_gcc_base_ver} $srcdir/BASE-VER"` 6569echo "gcc_driver_version: ${gcc_driver_version}" 6570cat > gcc-driver-name.h <<EOF 6571#define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_driver_version}${exeext}" 6572EOF 6573 6574# Check whether --enable-default-pie was given. 6575AC_ARG_ENABLE(default-pie, 6576[AS_HELP_STRING([--enable-default-pie], 6577 [enable Position Independent Executable as default])], 6578enable_default_pie=$enableval, 6579enable_default_pie=no) 6580if test x$enable_default_pie = xyes ; then 6581 AC_DEFINE(ENABLE_DEFAULT_PIE, 1, 6582 [Define if your target supports default PIE and it is enabled.]) 6583fi 6584AC_SUBST([enable_default_pie]) 6585 6586# Check if -fno-PIE works. 6587AC_CACHE_CHECK([for -fno-PIE option], 6588 [gcc_cv_c_no_fpie], 6589 [saved_CXXFLAGS="$CXXFLAGS" 6590 CXXFLAGS="$CXXFLAGS -fno-PIE" 6591 AC_COMPILE_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])], 6592 [gcc_cv_c_no_fpie=yes], 6593 [gcc_cv_c_no_fpie=no]) 6594 CXXFLAGS="$saved_CXXFLAGS"]) 6595if test "$gcc_cv_c_no_fpie" = "yes"; then 6596 NO_PIE_CFLAGS="-fno-PIE" 6597fi 6598AC_SUBST([NO_PIE_CFLAGS]) 6599 6600# Check if -no-pie works. 6601AC_CACHE_CHECK([for -no-pie option], 6602 [gcc_cv_no_pie], 6603 [saved_LDFLAGS="$LDFLAGS" 6604 LDFLAGS="$LDFLAGS -no-pie" 6605 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])], 6606 [gcc_cv_no_pie=yes], 6607 [gcc_cv_no_pie=no]) 6608 LDFLAGS="$saved_LDFLAGS"]) 6609if test "$gcc_cv_no_pie" = "yes"; then 6610 NO_PIE_FLAG="-no-pie" 6611fi 6612AC_SUBST([NO_PIE_FLAG]) 6613 6614# Check linker supports '-z bndplt' 6615ld_bndplt_support=no 6616AC_MSG_CHECKING(linker -z bndplt option) 6617if test x"$ld_is_gold" = xno; then 6618 if test $in_tree_ld = yes ; then 6619 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then 6620 ld_bndplt_support=yes 6621 fi 6622 elif test x$gcc_cv_ld != x; then 6623 # Check if linker supports -a bndplt option 6624 if $gcc_cv_ld --help 2>&1 | grep -- '-z bndplt' > /dev/null; then 6625 ld_bndplt_support=yes 6626 fi 6627 fi 6628fi 6629if test x"$ld_bndplt_support" = xyes; then 6630 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1, 6631 [Define if your linker supports -z bndplt]) 6632fi 6633AC_MSG_RESULT($ld_bndplt_support) 6634 6635# Check linker supports '--push-state'/'--pop-state' 6636ld_pushpopstate_support=no 6637AC_MSG_CHECKING(linker --push-state/--pop-state options) 6638if test x"$ld_is_gold" = xno; then 6639 if test $in_tree_ld = yes ; then 6640 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then 6641 ld_pushpopstate_support=yes 6642 fi 6643 elif test x$gcc_cv_ld != x; then 6644 # Check if linker supports --push-state/--pop-state options 6645 if $gcc_cv_ld --help 2>&1 | grep -- '--push-state' > /dev/null; then 6646 ld_pushpopstate_support=yes 6647 fi 6648 fi 6649fi 6650if test x"$ld_pushpopstate_support" = xyes; then 6651 AC_DEFINE(HAVE_LD_PUSHPOPSTATE_SUPPORT, 1, 6652 [Define if your linker supports --push-state/--pop-state]) 6653fi 6654AC_MSG_RESULT($ld_pushpopstate_support) 6655 6656# Configure the subdirectories 6657# AC_CONFIG_SUBDIRS($subdirs) 6658 6659# Create the Makefile 6660# and configure language subdirectories 6661AC_CONFIG_FILES($all_outputs) 6662 6663AC_CONFIG_COMMANDS([default], 6664[ 6665case ${CONFIG_HEADERS} in 6666 *auto-host.h:config.in*) 6667 echo > cstamp-h ;; 6668esac 6669# Make sure all the subdirs exist. 6670for d in $subdirs doc build common c-family 6671do 6672 test -d $d || mkdir $d 6673done 6674], 6675[subdirs='$subdirs']) 6676AC_OUTPUT 6677 6678