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,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'` 2662 ld_vers_major=`expr "$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 "${target}" in 2667 *-*-solaris2*) 2668 # Solaris 2 ld -V output looks like this for a regular version: 2669 # 2670 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699 2671 # 2672 # but test versions add stuff at the end: 2673 # 2674 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10 2675 # 2676 # In Solaris 11.4, this was changed to 2677 # 2678 # ld: Solaris ELF Utilities: 11.4-1.3123 2679 # 2680 # ld and ld.so.1 are guaranteed to be updated in lockstep, so ld version 2681 # numbers can be used in ld.so.1 feature checks even if a different 2682 # linker is configured. 2683 ld_ver=`$gcc_cv_ld -V 2>&1` 2684 if echo "$ld_ver" | $EGREP 'Solaris Link Editors|Solaris ELF Utilities' > /dev/null; then 2685 ld_vers=`echo $ld_ver | sed -n \ 2686 -e 's,^.*: \(5\|1[0-9]\)\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\2,p'` 2687 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'` 2688 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'` 2689 fi 2690 ;; 2691 esac 2692 fi 2693fi 2694changequote([,])dnl 2695 2696AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden, 2697[[if test $in_tree_ld = yes ; then 2698 gcc_cv_ld_hidden=no 2699 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \ 2700 && test $in_tree_ld_is_elf = yes; then 2701 gcc_cv_ld_hidden=yes 2702 fi 2703else 2704 gcc_cv_ld_hidden=yes 2705 if test x"$ld_is_gold" = xyes; then 2706 : 2707 elif echo "$ld_ver" | grep GNU > /dev/null; then 2708 case "${target}" in 2709 mmix-knuth-mmixware) 2710 # The linker emits by default mmo, not ELF, so "no" is appropriate. 2711 gcc_cv_ld_hidden=no 2712 ;; 2713 esac 2714 if test 0"$ld_date" -lt 20020404; then 2715 if test -n "$ld_date"; then 2716 # If there was date string, but was earlier than 2002-04-04, fail 2717 gcc_cv_ld_hidden=no 2718 elif test -z "$ld_vers"; then 2719 # If there was no date string nor ld version number, something is wrong 2720 gcc_cv_ld_hidden=no 2721 else 2722 test -z "$ld_vers_patch" && ld_vers_patch=0 2723 if test "$ld_vers_major" -lt 2; then 2724 gcc_cv_ld_hidden=no 2725 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then 2726 gcc_cv_ld_hidden="no" 2727 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then 2728 gcc_cv_ld_hidden=no 2729 fi 2730 fi 2731 fi 2732 else 2733 case "${target}" in 2734 *-*-aix[789]*) 2735 gcc_cv_ld_hidden=yes 2736 ;; 2737 *-*-darwin*) 2738 # Darwin ld has some visibility support. 2739 gcc_cv_ld_hidden=yes 2740 ;; 2741 hppa64*-*-hpux* | ia64*-*-hpux*) 2742 gcc_cv_ld_hidden=yes 2743 ;; 2744 *-*-solaris2.1[0-9]*) 2745 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but 2746 # .symbolic was only added in Solaris 9 12/02. 2747 gcc_cv_ld_hidden=yes 2748 ;; 2749 *) 2750 gcc_cv_ld_hidden=no 2751 ;; 2752 esac 2753 fi 2754fi]]) 2755libgcc_visibility=no 2756AC_SUBST(libgcc_visibility) 2757GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN]) 2758if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then 2759 libgcc_visibility=yes 2760 AC_DEFINE(HAVE_GAS_HIDDEN, 1, 2761 [Define if your assembler and linker support .hidden.]) 2762fi 2763 2764AC_MSG_CHECKING(linker read-only and read-write section mixing) 2765gcc_cv_ld_ro_rw_mix=unknown 2766if test $in_tree_ld = yes ; then 2767 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \ 2768 && test $in_tree_ld_is_elf = yes; then 2769 gcc_cv_ld_ro_rw_mix=read-write 2770 fi 2771elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then 2772 echo '.section myfoosect, "a"' > conftest1.s 2773 echo '.section myfoosect, "aw"' > conftest2.s 2774 echo '.byte 1' >> conftest2.s 2775 echo '.section myfoosect, "a"' > conftest3.s 2776 echo '.byte 0' >> conftest3.s 2777 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \ 2778 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \ 2779 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \ 2780 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \ 2781 conftest2.o conftest3.o > /dev/null 2>&1; then 2782 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \ 2783 | sed -e '/myfoosect/!d' -e N` 2784 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then 2785 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then 2786 gcc_cv_ld_ro_rw_mix=read-only 2787 else 2788 gcc_cv_ld_ro_rw_mix=read-write 2789 fi 2790 fi 2791 fi 2792changequote(,)dnl 2793 rm -f conftest.* conftest[123].* 2794changequote([,])dnl 2795fi 2796if test x$gcc_cv_ld_ro_rw_mix = xread-write; then 2797 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1, 2798 [Define if your linker links a mix of read-only 2799 and read-write sections into a read-write section.]) 2800fi 2801AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix) 2802 2803gcc_AC_INITFINI_ARRAY 2804 2805# Check if we have .[us]leb128, and support symbol arithmetic with it. 2806gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128, 2807 [elf,2,11,0],, 2808[ .data 2809 .uleb128 L2 - L1 2810L1: 2811 .uleb128 1280 2812 .sleb128 -1010 2813L2:], 2814[[# GAS versions before 2.11 do not support uleb128, 2815 # despite appearing to. 2816 # ??? There exists an elf-specific test that will crash 2817 # the assembler. Perhaps it's better to figure out whether 2818 # arbitrary sections are supported and try the test. 2819 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q` 2820 if echo "$as_ver" | grep GNU > /dev/null; then 2821 as_vers=`echo $as_ver | sed -n \ 2822 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'` 2823 as_major=`expr "$as_vers" : '\([0-9]*\)'` 2824 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'` 2825 if test $as_major -eq 2 && test $as_minor -lt 11 2826 then : 2827 else gcc_cv_as_leb128=yes 2828 fi 2829 fi]], 2830 [AC_DEFINE(HAVE_AS_LEB128, 1, 2831 [Define if your assembler supports .sleb128 and .uleb128.])], 2832 [AC_DEFINE(HAVE_AS_LEB128, 0, 2833 [Define if your assembler supports .sleb128 and .uleb128.])]) 2834 2835# Determine if an .eh_frame section is read-only. 2836gcc_fn_eh_frame_ro () { 2837 $gcc_cv_as $1 -o conftest.o conftest.s > /dev/null 2>&1 && \ 2838 $gcc_cv_objdump -h conftest.o 2>/dev/null | \ 2839 sed -e '/.eh_frame/!d' -e N | grep READONLY > /dev/null 2840} 2841 2842# Check if we have assembler support for unwind directives. 2843gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive, 2844 ,, 2845[ .text 2846 .cfi_startproc 2847 .cfi_offset 0, 0 2848 .cfi_same_value 1 2849 .cfi_def_cfa 1, 2 2850 .cfi_escape 1, 2, 3, 4, 5 2851 .cfi_endproc], 2852[case "$target" in 2853 *-*-solaris*) 2854 # If the linker used on Solaris (like Sun ld) isn't capable of merging 2855 # read-only and read-write sections, we need to make sure that the 2856 # assembler used emits read-write .eh_frame sections. 2857 if test "x$gcc_cv_ld_ro_rw_mix" = xread-write; then 2858 gcc_cv_as_cfi_directive=yes 2859 elif test "x$gcc_cv_objdump" = x; then 2860 # No objdump, err on the side of caution. 2861 gcc_cv_as_cfi_directive=no 2862 else 2863 if test x$gas = xyes; then 2864 as_32_opt="--32" 2865 as_64_opt="--64" 2866 else 2867 as_32_opt="-m32" 2868 as_64_opt="-m64" 2869 fi 2870 case "$target" in 2871 sparc*-*-solaris2.*) 2872 # On Solaris/SPARC, .eh_frame sections should always be read-write. 2873 if gcc_fn_eh_frame_ro $as_32_opt \ 2874 || gcc_fn_eh_frame_ro $as_64_opt; then 2875 gcc_cv_as_cfi_directive=no 2876 else 2877 gcc_cv_as_cfi_directive=yes 2878 fi 2879 ;; 2880 i?86-*-solaris2.* | x86_64-*-solaris2.*) 2881 # On Solaris/x86, make sure that GCC and assembler agree on using 2882 # read-only .eh_frame sections for 64-bit. 2883 if gcc_fn_eh_frame_ro $as_32_opt; then 2884 gcc_cv_as_cfi_directive=no 2885 elif gcc_fn_eh_frame_ro $as_64_opt; then 2886 gcc_cv_as_cfi_directive=yes 2887 else 2888 gcc_cv_as_cfi_directive=no 2889 fi 2890 ;; 2891 esac 2892 fi 2893 ;; 2894 *-*-*) 2895 gcc_cv_as_cfi_directive=yes 2896 ;; 2897esac]) 2898if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then 2899gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working, 2900 ,, 2901[ .text 2902 .cfi_startproc 2903 .cfi_adjust_cfa_offset 64 2904 .skip 75040, 0 2905 .cfi_adjust_cfa_offset 128 2906 .cfi_endproc], 2907[[ 2908if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \ 2909 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then 2910 gcc_cv_as_cfi_advance_working=yes 2911fi 2912]]) 2913else 2914 # no objdump, err on the side of caution 2915 gcc_cv_as_cfi_advance_working=no 2916fi 2917GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE) 2918AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE, 2919 [`if test $gcc_cv_as_cfi_directive = yes \ 2920 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`], 2921 [Define 0/1 if your assembler supports CFI directives.]) 2922 2923GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE) 2924gcc_GAS_CHECK_FEATURE([cfi personality directive], 2925 gcc_cv_as_cfi_personality_directive, ,, 2926[ .text 2927 .cfi_startproc 2928 .cfi_personality 0, symbol 2929 .cfi_endproc]) 2930AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE, 2931 [`if test $gcc_cv_as_cfi_personality_directive = yes; then echo 1; else echo 0; fi`], 2932 [Define 0/1 if your assembler supports .cfi_personality.]) 2933 2934gcc_GAS_CHECK_FEATURE([cfi sections directive], 2935 gcc_cv_as_cfi_sections_directive, ,, 2936[ .text 2937 .cfi_sections .debug_frame, .eh_frame 2938 .cfi_startproc 2939 .cfi_endproc], 2940[case $target_os in 2941 win32 | pe | cygwin* | mingw32*) 2942 # Need to check that we generated the correct relocation for the 2943 # .debug_frame section. This was fixed for binutils 2.21. 2944 gcc_cv_as_cfi_sections_directive=no 2945 if test "x$gcc_cv_objdump" != x; then 2946 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \ 2947 grep secrel > /dev/null; then 2948 gcc_cv_as_cfi_sections_directive=yes 2949 fi 2950 fi 2951 ;; 2952 *) 2953 gcc_cv_as_cfi_sections_directive=yes 2954 ;; 2955esac]) 2956GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE) 2957AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE, 2958 [`if test $gcc_cv_as_cfi_sections_directive = yes; then echo 1; else echo 0; fi`], 2959 [Define 0/1 if your assembler supports .cfi_sections.]) 2960 2961# GAS versions up to and including 2.11.0 may mis-optimize 2962# .eh_frame data. 2963gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame, 2964 [elf,2,12,0],, 2965[ .text 2966.LFB1: 2967 .4byte 0 2968.L1: 2969 .4byte 0 2970.LFE1: 2971 .section .eh_frame,"aw",@progbits 2972__FRAME_BEGIN__: 2973 .4byte .LECIE1-.LSCIE1 2974.LSCIE1: 2975 .4byte 0x0 2976 .byte 0x1 2977 .ascii "z\0" 2978 .byte 0x1 2979 .byte 0x78 2980 .byte 0x1a 2981 .byte 0x0 2982 .byte 0x4 2983 .4byte 1 2984 .p2align 1 2985.LECIE1: 2986.LSFDE1: 2987 .4byte .LEFDE1-.LASFDE1 2988.LASFDE1: 2989 .4byte .LASFDE1-__FRAME_BEGIN__ 2990 .4byte .LFB1 2991 .4byte .LFE1-.LFB1 2992 .byte 0x4 2993 .4byte .LFE1-.LFB1 2994 .byte 0x4 2995 .4byte .L1-.LFB1 2996.LEFDE1:], 2997[ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@. 2998cat > conftest.lit <<EOF 2999 0000 10000000 00000000 017a0001 781a0004 .........z..x... 3000 0010 01000000 12000000 18000000 00000000 ................ 3001 0020 08000000 04080000 0044 .........D @&t@ 3002EOF 3003cat > conftest.big <<EOF 3004 0000 00000010 00000000 017a0001 781a0004 .........z..x... 3005 0010 00000001 00000012 00000018 00000000 ................ 3006 0020 00000008 04000000 0844 .........D @&t@ 3007EOF 3008 # If the assembler didn't choke, and we can objdump, 3009 # and we got the correct data, then succeed. 3010 # The text in the here-document typically retains its unix-style line 3011 # endings, while the output of objdump will use host line endings. 3012 # Therefore, use diff -b for the comparisons. 3013 if test x$gcc_cv_objdump != x \ 3014 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \ 3015 | tail -3 > conftest.got \ 3016 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \ 3017 || diff -b conftest.big conftest.got > /dev/null 2>&1; } 3018 then 3019 gcc_cv_as_eh_frame=yes 3020 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then 3021 gcc_cv_as_eh_frame=buggy 3022 else 3023 # Uh oh, what do we do now? 3024 gcc_cv_as_eh_frame=no 3025 fi]) 3026 3027if test $gcc_cv_as_eh_frame = buggy; then 3028 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1, 3029 [Define if your assembler mis-optimizes .eh_frame data.]) 3030fi 3031 3032# Test if the assembler supports the section flag 'e' or #exclude for 3033# specifying an excluded section. 3034gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_e, 3035 [2,22,51], [--fatal-warnings], 3036 [.section foo1,"e" 3037 .byte 0,0,0,0]) 3038if test $gcc_cv_as_section_exclude_e = no; then 3039 case "${target}" in 3040 # Solaris as uses #exclude instead. 3041 *-*-solaris2*) 3042 case "${target}" in 3043 sparc*-*-solaris2*) 3044 conftest_s='.section "foo1", #exclude' 3045 ;; 3046 i?86-*-solaris2* | x86_64-*-solaris2*) 3047 conftest_s='.section foo1, #exclude' 3048 ;; 3049 esac 3050 ;; 3051 esac 3052 gcc_GAS_CHECK_FEATURE([section exclude flag], gcc_cv_as_section_exclude_hash,,, 3053 [$conftest_s 3054 .byte 0,0,0,0]) 3055fi 3056AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE, 3057 [`if test $gcc_cv_as_section_exclude_e = yes || test $gcc_cv_as_section_exclude_hash = yes; then echo 1; else echo 0; fi`], 3058[Define if your assembler supports specifying the exclude section flag.]) 3059 3060gcc_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]) 3063if test $gcc_cv_as_shf_merge = no; then 3064 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge, 3065 [elf,2,12,0], [--fatal-warnings], 3066 [.section .rodata.str, "aMS", %progbits, 1]) 3067fi 3068case "$target" in 3069 i?86-*-solaris2.10* | x86_64-*-solaris2.10*) 3070 # SHF_MERGE support in Solaris 10/x86 ld is broken. 3071 if test x"$gnu_ld" = xno; then 3072 gcc_cv_as_shf_merge=no 3073 fi 3074 ;; 3075esac 3076AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE, 3077 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`], 3078[Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.]) 3079 3080gcc_cv_ld_aligned_shf_merge=yes 3081case "$target" in 3082 # While Solaris 10/SPARC ld isn't affected, disable to avoid problems 3083 # relinking on Solaris 11 < 11.4. 3084 sparc*-*-solaris2.10*) 3085 if test x"$gnu_ld" = xno; then 3086 gcc_cv_ld_aligned_shf_merge=no 3087 fi 3088 ;; 3089 # SHF_MERGE support is broken in Solaris ld up to Solaris 11.3/SPARC for 3090 # alignment > 1. 3091 sparc*-*-solaris2.11*) 3092 if test x"$gnu_ld" = xno \ 3093 && test "$ld_vers_major" -lt 2 && test "$ld_vers_minor" -lt 3159; then 3094 gcc_cv_ld_aligned_shf_merge=no 3095 fi 3096 ;; 3097esac 3098AC_DEFINE_UNQUOTED(HAVE_LD_ALIGNED_SHF_MERGE, 3099 [`if test $gcc_cv_ld_aligned_shf_merge = yes; then echo 1; else echo 0; fi`], 3100[Define 0/1 if your linker supports the SHF_MERGE flag with section alignment > 1.]) 3101 3102gcc_GAS_CHECK_FEATURE([stabs directive], gcc_cv_as_stabs_directive, ,, 3103[.stabs "gcc2_compiled.",60,0,0,0],, 3104[AC_DEFINE(HAVE_AS_STABS_DIRECTIVE, 1, 3105 [Define if your assembler supports .stabs.])]) 3106 3107gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)], 3108 gcc_cv_as_comdat_group, 3109 [elf,2,16,0], [--fatal-warnings], 3110 [.section .text,"axG",@progbits,.foo,comdat]) 3111if test $gcc_cv_as_comdat_group = yes; then 3112 gcc_cv_as_comdat_group_percent=no 3113 gcc_cv_as_comdat_group_group=no 3114else 3115 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)], 3116 gcc_cv_as_comdat_group_percent, 3117 [elf,2,16,0], [--fatal-warnings], 3118 [.section .text,"axG",%progbits,.foo,comdat]) 3119 if test $gcc_cv_as_comdat_group_percent = yes; then 3120 gcc_cv_as_comdat_group_group=no 3121 else 3122 case "${target}" in 3123 # Sun as uses a completely different syntax. 3124 *-*-solaris2*) 3125 case "${target}" in 3126 sparc*-*-solaris2*) 3127 conftest_s=' 3128 .group foo,".text%foo",#comdat 3129 .section ".text%foo", #alloc,#execinstr,#progbits 3130 .globl foo 3131 foo: 3132 ' 3133 ;; 3134 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*) 3135 conftest_s=' 3136 .group foo,.text%foo,#comdat 3137 .section .text%foo, "ax", @progbits 3138 .globl foo 3139 foo: 3140 ' 3141 ;; 3142 esac 3143 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)], 3144 gcc_cv_as_comdat_group_group, 3145 ,, [$conftest_s]) 3146 ;; 3147 esac 3148 if test -z "${gcc_cv_as_comdat_group_group+set}"; then 3149 gcc_cv_as_comdat_group_group=no 3150 fi 3151 fi 3152fi 3153if test x"$ld_is_gold" = xyes; then 3154 comdat_group=yes 3155elif test $in_tree_ld = yes ; then 3156 comdat_group=no 3157 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \ 3158 && test $in_tree_ld_is_elf = yes; then 3159 comdat_group=yes 3160 fi 3161elif echo "$ld_ver" | grep GNU > /dev/null; then 3162 comdat_group=yes 3163 if test 0"$ld_date" -lt 20050308; then 3164 if test -n "$ld_date"; then 3165 # If there was date string, but was earlier than 2005-03-08, fail 3166 comdat_group=no 3167 elif test "$ld_vers_major" -lt 2; then 3168 comdat_group=no 3169 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then 3170 comdat_group=no 3171 fi 3172 fi 3173else 3174changequote(,)dnl 3175 case "${target}" in 3176 *-*-solaris2.1[1-9]*) 3177 comdat_group=no 3178 # Sun ld has COMDAT group support since Solaris 9, but it doesn't 3179 # interoperate with GNU as until Solaris 11 build 130, i.e. ld 3180 # version 1.688. 3181 # 3182 # If using Sun as for COMDAT group as emitted by GCC, one needs at 3183 # least ld version 1.2267. 3184 if test "$ld_vers_major" -gt 1; then 3185 comdat_group=yes 3186 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then 3187 comdat_group=yes 3188 elif test "$ld_vers_minor" -ge 2267; then 3189 comdat_group=yes 3190 fi 3191 ;; 3192 *) 3193 # Assume linkers other than GNU ld don't support COMDAT group. 3194 comdat_group=no 3195 ;; 3196 esac 3197changequote([,])dnl 3198fi 3199# Allow overriding the automatic COMDAT group tests above. 3200AC_ARG_ENABLE(comdat, 3201 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])], 3202 [comdat_group="$enable_comdat"]) 3203if test $comdat_group = no; then 3204 gcc_cv_as_comdat_group=no 3205 gcc_cv_as_comdat_group_percent=no 3206 gcc_cv_as_comdat_group_group=no 3207fi 3208AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP, 3209 [`if test $gcc_cv_as_comdat_group = yes \ 3210 || test $gcc_cv_as_comdat_group_percent = yes \ 3211 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`], 3212[Define 0/1 if your assembler and linker support COMDAT groups.]) 3213 3214# Restrict this test to Solaris/x86: other targets define this statically. 3215case "${target}" in 3216 i?86-*-solaris2* | x86_64-*-solaris2*) 3217 AC_MSG_CHECKING(support for hidden thunks in linkonce sections) 3218 if test $in_tree_ld = yes || echo "$ld_ver" | grep GNU > /dev/null; then 3219 hidden_linkonce=yes 3220 else 3221 case "${target}" in 3222 # Full support for hidden thunks in linkonce sections only appeared in 3223 # Solaris 11/OpenSolaris. 3224 *-*-solaris2.1[[1-9]]*) 3225 hidden_linkonce=yes 3226 ;; 3227 *) 3228 hidden_linkonce=no 3229 ;; 3230 esac 3231 fi 3232 AC_MSG_RESULT($hidden_linkonce) 3233 AC_DEFINE_UNQUOTED(USE_HIDDEN_LINKONCE, 3234 [`if test $hidden_linkonce = yes; then echo 1; else echo 0; fi`], 3235 [Define 0/1 if your linker supports hidden thunks in linkonce sections.]) 3236 ;; 3237esac 3238 3239gcc_GAS_CHECK_FEATURE([line table is_stmt support], 3240 gcc_cv_as_is_stmt, 3241 [2,16,92],, 3242[ .text 3243 .file 1 "conf.c" 3244 .loc 1 1 0 is_stmt 1],, 3245[AC_DEFINE(HAVE_GAS_LOC_STMT, 1, 3246 [Define if your assembler supports the .loc is_stmt sub-directive.])]) 3247 3248gcc_GAS_CHECK_FEATURE([line table discriminator support], 3249 gcc_cv_as_discriminator, 3250 [2,19,51],, 3251[ .text 3252 .file 1 "conf.c" 3253 .loc 1 1 0 discriminator 1],, 3254[AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1, 3255 [Define if your assembler supports the .loc discriminator sub-directive.])]) 3256 3257# Thread-local storage - the check is heavily parameterized. 3258conftest_s= 3259tls_first_major= 3260tls_first_minor= 3261tls_as_opt= 3262case "$target" in 3263changequote(,)dnl 3264 alpha*-*-*) 3265 conftest_s=' 3266 .section ".tdata","awT",@progbits 3267foo: .long 25 3268 .text 3269 ldq $27,__tls_get_addr($29) !literal!1 3270 lda $16,foo($29) !tlsgd!1 3271 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1 3272 ldq $27,__tls_get_addr($29) !literal!2 3273 lda $16,foo($29) !tlsldm!2 3274 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2 3275 ldq $1,foo($29) !gotdtprel 3276 ldah $2,foo($29) !dtprelhi 3277 lda $3,foo($2) !dtprello 3278 lda $4,foo($29) !dtprel 3279 ldq $1,foo($29) !gottprel 3280 ldah $2,foo($29) !tprelhi 3281 lda $3,foo($2) !tprello 3282 lda $4,foo($29) !tprel' 3283 tls_first_major=2 3284 tls_first_minor=13 3285 tls_as_opt=--fatal-warnings 3286 ;; 3287 arc*-*-*) 3288 conftest_s=' 3289 add_s r0,r0, @foo@tpoff' 3290 tls_first_major=2 3291 tls_first_minor=23 3292 ;; 3293 cris-*-*|crisv32-*-*) 3294 conftest_s=' 3295 .section ".tdata","awT",@progbits 3296x: .long 25 3297 .text 3298 move.d x:IE,$r10 3299 nop' 3300 tls_first_major=2 3301 tls_first_minor=20 3302 tls_as_opt=--fatal-warnings 3303 ;; 3304 frv*-*-*) 3305 conftest_s=' 3306 .section ".tdata","awT",@progbits 3307x: .long 25 3308 .text 3309 call #gettlsoff(x)' 3310 tls_first_major=2 3311 tls_first_minor=14 3312 ;; 3313 hppa*-*-linux*) 3314 conftest_s=' 3315t1: .reg %r20 3316t2: .reg %r21 3317gp: .reg %r19 3318 .section ".tdata","awT",@progbits 3319foo: .long 25 3320 .text 3321 .align 4 3322 addil LT%foo-$tls_gdidx$,gp 3323 ldo RT%foo-$tls_gdidx$(%r1),%arg0 3324 b __tls_get_addr 3325 nop 3326 addil LT%foo-$tls_ldidx$,gp 3327 b __tls_get_addr 3328 ldo RT%foo-$tls_ldidx$(%r1),%arg0 3329 addil LR%foo-$tls_dtpoff$,%ret0 3330 ldo RR%foo-$tls_dtpoff$(%r1),%t1 3331 mfctl %cr27,%t1 3332 addil LT%foo-$tls_ieoff$,gp 3333 ldw RT%foo-$tls_ieoff$(%r1),%t2 3334 add %t1,%t2,%t3 3335 mfctl %cr27,%t1 3336 addil LR%foo-$tls_leoff$,%t1 3337 ldo RR%foo-$tls_leoff$(%r1),%t2' 3338 tls_first_major=2 3339 tls_first_minor=15 3340 tls_as_opt=--fatal-warnings 3341 ;; 3342 arm*-*-*) 3343 conftest_s=' 3344 .section ".tdata","awT",%progbits 3345foo: .long 25 3346 .text 3347.word foo(gottpoff) 3348.word foo(tpoff) 3349.word foo(tlsgd) 3350.word foo(tlsldm) 3351.word foo(tlsldo)' 3352 tls_first_major=2 3353 tls_first_minor=17 3354 ;; 3355 i[34567]86-*-* | x86_64-*-*) 3356 case "$target" in 3357 i[34567]86-*-solaris2.* | x86_64-*-solaris2.1[0-9]*) 3358 on_solaris=yes 3359 ;; 3360 *) 3361 on_solaris=no 3362 ;; 3363 esac 3364 if test x$on_solaris = xyes && test x$gas_flag = xno; then 3365 conftest_s=' 3366 .section .tdata,"awt",@progbits' 3367 tls_first_major=0 3368 tls_first_minor=0 3369 tls_section_flag=t 3370changequote([,])dnl 3371 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't', 3372[Define to the flag used to mark TLS sections if the default (`T') doesn't work.]) 3373changequote(,)dnl 3374 else 3375 conftest_s=' 3376 .section ".tdata","awT",@progbits' 3377 tls_first_major=2 3378 tls_first_minor=14 3379 tls_section_flag=T 3380 tls_as_opt="--fatal-warnings" 3381 fi 3382 case "$target" in 3383 i[34567]86-*-*) 3384 conftest_s="$conftest_s 3385foo: .long 25 3386 .text 3387 movl %gs:0, %eax 3388 leal foo@tlsgd(,%ebx,1), %eax 3389 leal foo@tlsldm(%ebx), %eax 3390 leal foo@dtpoff(%eax), %edx 3391 movl foo@gottpoff(%ebx), %eax 3392 subl foo@gottpoff(%ebx), %eax 3393 addl foo@gotntpoff(%ebx), %eax 3394 movl foo@indntpoff, %eax 3395 movl \$foo@tpoff, %eax 3396 subl \$foo@tpoff, %eax 3397 leal foo@ntpoff(%ecx), %eax" 3398 ;; 3399 x86_64-*-*) 3400 if test x$on_solaris = xyes; then 3401 case $gas_flag in 3402 yes) tls_as_opt="$tls_as_opt --64" ;; 3403 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;; 3404 esac 3405 fi 3406 conftest_s="$conftest_s 3407foo: .long 25 3408 .text 3409 movq %fs:0, %rax 3410 leaq foo@tlsgd(%rip), %rdi 3411 leaq foo@tlsld(%rip), %rdi 3412 leaq foo@dtpoff(%rax), %rdx 3413 movq foo@gottpoff(%rip), %rax 3414 movq \$foo@tpoff, %rax" 3415 ;; 3416 esac 3417 ;; 3418 ia64-*-*) 3419 conftest_s=' 3420 .section ".tdata","awT",@progbits 3421foo: data8 25 3422 .text 3423 addl r16 = @ltoff(@dtpmod(foo#)), gp 3424 addl r17 = @ltoff(@dtprel(foo#)), gp 3425 addl r18 = @ltoff(@tprel(foo#)), gp 3426 addl r19 = @dtprel(foo#), gp 3427 adds r21 = @dtprel(foo#), r13 3428 movl r23 = @dtprel(foo#) 3429 addl r20 = @tprel(foo#), gp 3430 adds r22 = @tprel(foo#), r13 3431 movl r24 = @tprel(foo#)' 3432 tls_first_major=2 3433 tls_first_minor=13 3434 tls_as_opt=--fatal-warnings 3435 ;; 3436 microblaze*-*-*) 3437 conftest_s=' 3438 .section .tdata,"awT",@progbits 3439x: 3440 .word 2 3441 .text 3442 addik r5,r20,x@TLSGD 3443 addik r5,r20,x@TLSLDM' 3444 tls_first_major=2 3445 tls_first_minor=20 3446 tls_as_opt='--fatal-warnings' 3447 ;; 3448 mips*-*-*) 3449 conftest_s=' 3450 .section .tdata,"awT",@progbits 3451x: 3452 .word 2 3453 .text 3454 addiu $4, $28, %tlsgd(x) 3455 addiu $4, $28, %tlsldm(x) 3456 lui $4, %dtprel_hi(x) 3457 addiu $4, $4, %dtprel_lo(x) 3458 lw $4, %gottprel(x)($28) 3459 lui $4, %tprel_hi(x) 3460 addiu $4, $4, %tprel_lo(x)' 3461 tls_first_major=2 3462 tls_first_minor=16 3463 tls_as_opt='-32 --fatal-warnings' 3464 ;; 3465 m68k-*-*) 3466 conftest_s=' 3467 .section .tdata,"awT",@progbits 3468x: 3469 .word 2 3470 .text 3471foo: 3472 move.l x@TLSGD(%a5),%a0 3473 move.l x@TLSLDM(%a5),%a0 3474 move.l x@TLSLDO(%a5),%a0 3475 move.l x@TLSIE(%a5),%a0 3476 move.l x@TLSLE(%a5),%a0' 3477 tls_first_major=2 3478 tls_first_minor=19 3479 tls_as_opt='--fatal-warnings' 3480 ;; 3481 nios2-*-*) 3482 conftest_s=' 3483 .section ".tdata","awT",@progbits' 3484 tls_first_major=2 3485 tls_first_minor=23 3486 tls_as_opt="--fatal-warnings" 3487 ;; 3488 aarch64*-*-*) 3489 conftest_s=' 3490 .section ".tdata","awT",%progbits 3491foo: .long 25 3492 .text 3493 adrp x0, :tlsgd:x 3494 add x0, x0, #:tlsgd_lo12:x 3495 bl __tls_get_addr 3496 nop' 3497 tls_first_major=2 3498 tls_first_minor=20 3499 tls_as_opt='--fatal-warnings' 3500 ;; 3501 or1k*-*-*) 3502 conftest_s=' 3503 .section ".tdata","awT",@progbits 3504foo: .long 25 3505 .text 3506 l.movhi r3, tpoffha(foo) 3507 l.add r3, r3, r10 3508 l.lwz r4, tpofflo(foo)(r3)' 3509 tls_first_major=2 3510 tls_first_minor=30 3511 tls_as_opt=--fatal-warnings 3512 ;; 3513 powerpc-ibm-aix*) 3514 conftest_s=' 3515 .extern __get_tpointer 3516 .toc 3517LC..1: 3518 .tc a[TC],a[TL]@le 3519 .csect .text[PR] 3520.tlstest: 3521 lwz 9,LC..1(2) 3522 bla __get_tpointer 3523 lwzx 3,9,3 3524 .globl a 3525 .csect a[TL],4 3526a: 3527 .space 4' 3528 tls_first_major=0 3529 tls_first_minor=0 3530 ;; 3531 powerpc64*-*-*) 3532 conftest_s=' 3533 .section ".tdata","awT",@progbits 3534 .align 3 3535ld0: .space 8 3536ld1: .space 8 3537x1: .space 8 3538x2: .space 8 3539x3: .space 8 3540 .text 3541 addi 3,2,ld0@got@tlsgd 3542 bl .__tls_get_addr 3543 nop 3544 addi 3,2,ld1@toc 3545 bl .__tls_get_addr 3546 nop 3547 addi 3,2,x1@got@tlsld 3548 bl .__tls_get_addr 3549 nop 3550 addi 9,3,x1@dtprel 3551 bl .__tls_get_addr 3552 nop 3553 addis 9,3,x2@dtprel@ha 3554 addi 9,9,x2@dtprel@l 3555 bl .__tls_get_addr 3556 nop 3557 ld 9,x3@got@dtprel(2) 3558 add 9,9,3 3559 bl .__tls_get_addr 3560 nop' 3561 tls_first_major=2 3562 tls_first_minor=14 3563 tls_as_opt="-a64 --fatal-warnings" 3564 ;; 3565 powerpc*-*-*) 3566 conftest_s=' 3567 .section ".tdata","awT",@progbits 3568 .align 2 3569ld0: .space 4 3570ld1: .space 4 3571x1: .space 4 3572x2: .space 4 3573x3: .space 4 3574 .text 3575 addi 3,31,ld0@got@tlsgd 3576 bl __tls_get_addr 3577 addi 3,31,x1@got@tlsld 3578 bl __tls_get_addr 3579 addi 9,3,x1@dtprel 3580 addis 9,3,x2@dtprel@ha 3581 addi 9,9,x2@dtprel@l 3582 lwz 9,x3@got@tprel(31) 3583 add 9,9,x@tls 3584 addi 9,2,x1@tprel 3585 addis 9,2,x2@tprel@ha 3586 addi 9,9,x2@tprel@l' 3587 tls_first_major=2 3588 tls_first_minor=14 3589 tls_as_opt="-a32 --fatal-warnings" 3590 ;; 3591 riscv*-*-*) 3592 conftest_s=' 3593 .section .tdata,"awT",@progbits 3594x: .word 2 3595 .text 3596 la.tls.gd a0,x 3597 call __tls_get_addr' 3598 tls_first_major=2 3599 tls_first_minor=21 3600 tls_as_opt='--fatal-warnings' 3601 ;; 3602 s390-*-*) 3603 conftest_s=' 3604 .section ".tdata","awT",@progbits 3605foo: .long 25 3606 .text 3607 .long foo@TLSGD 3608 .long foo@TLSLDM 3609 .long foo@DTPOFF 3610 .long foo@NTPOFF 3611 .long foo@GOTNTPOFF 3612 .long foo@INDNTPOFF 3613 l %r1,foo@GOTNTPOFF(%r12) 3614 l %r1,0(%r1):tls_load:foo 3615 bas %r14,0(%r1,%r13):tls_gdcall:foo 3616 bas %r14,0(%r1,%r13):tls_ldcall:foo' 3617 tls_first_major=2 3618 tls_first_minor=14 3619 tls_as_opt="-m31 --fatal-warnings" 3620 ;; 3621 s390x-*-*) 3622 conftest_s=' 3623 .section ".tdata","awT",@progbits 3624foo: .long 25 3625 .text 3626 .quad foo@TLSGD 3627 .quad foo@TLSLDM 3628 .quad foo@DTPOFF 3629 .quad foo@NTPOFF 3630 .quad foo@GOTNTPOFF 3631 lg %r1,foo@GOTNTPOFF(%r12) 3632 larl %r1,foo@INDNTPOFF 3633 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo 3634 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo' 3635 tls_first_major=2 3636 tls_first_minor=14 3637 tls_as_opt="-m64 -Aesame --fatal-warnings" 3638 ;; 3639 sh-*-* | sh[123456789lbe]*-*-*) 3640 conftest_s=' 3641 .section ".tdata","awT",@progbits 3642foo: .long 25 3643 .text 3644 .long foo@TLSGD 3645 .long foo@TLSLDM 3646 .long foo@DTPOFF 3647 .long foo@GOTTPOFF 3648 .long foo@TPOFF' 3649 tls_first_major=2 3650 tls_first_minor=13 3651 tls_as_opt=--fatal-warnings 3652 ;; 3653 sparc*-*-*) 3654 case "$target" in 3655 sparc*-sun-solaris2.*) 3656 on_solaris=yes 3657 ;; 3658 *) 3659 on_solaris=no 3660 ;; 3661 esac 3662 if test x$on_solaris = xyes && test x$gas_flag = xno; then 3663 conftest_s=' 3664 .section ".tdata",#alloc,#write,#tls' 3665 tls_first_major=0 3666 tls_first_minor=0 3667 else 3668 conftest_s=' 3669 .section ".tdata","awT",@progbits' 3670 tls_first_major=2 3671 tls_first_minor=14 3672 tls_as_opt="-32 --fatal-warnings" 3673 fi 3674 conftest_s="$conftest_s 3675foo: .long 25 3676 .text 3677 sethi %tgd_hi22(foo), %o0 3678 add %o0, %tgd_lo10(foo), %o1 3679 add %l7, %o1, %o0, %tgd_add(foo) 3680 call __tls_get_addr, %tgd_call(foo) 3681 sethi %tldm_hi22(foo), %l1 3682 add %l1, %tldm_lo10(foo), %l2 3683 add %l7, %l2, %o0, %tldm_add(foo) 3684 call __tls_get_addr, %tldm_call(foo) 3685 sethi %tldo_hix22(foo), %l3 3686 xor %l3, %tldo_lox10(foo), %l4 3687 add %o0, %l4, %l5, %tldo_add(foo) 3688 sethi %tie_hi22(foo), %o3 3689 add %o3, %tie_lo10(foo), %o3 3690 ld [%l7 + %o3], %o2, %tie_ld(foo) 3691 add %g7, %o2, %o4, %tie_add(foo) 3692 sethi %tle_hix22(foo), %l1 3693 xor %l1, %tle_lox10(foo), %o5 3694 ld [%g7 + %o5], %o1" 3695 ;; 3696 tilepro*-*-*) 3697 conftest_s=' 3698 .section ".tdata","awT",@progbits 3699foo: .long 25 3700 .text 3701 addli r0, zero, tls_gd(foo) 3702 auli r0, zero, tls_gd_ha16(foo) 3703 addli r0, r0, tls_gd_lo16(foo) 3704 jal __tls_get_addr 3705 addli r0, zero, tls_ie(foo) 3706 auli r0, r0, tls_ie_ha16(foo) 3707 addli r0, r0, tls_ie_lo16(foo)' 3708 tls_first_major=2 3709 tls_first_minor=22 3710 tls_as_opt="--fatal-warnings" 3711 ;; 3712 tilegx*-*-*) 3713 conftest_s=' 3714 .section ".tdata","awT",@progbits 3715foo: .long 25 3716 .text 3717 shl16insli r0, zero, hw0_last_tls_gd(foo) 3718 shl16insli r0, zero, hw1_last_tls_gd(foo) 3719 shl16insli r0, r0, hw0_tls_gd(foo) 3720 jal __tls_get_addr 3721 shl16insli r0, zero, hw1_last_tls_ie(foo) 3722 shl16insli r0, r0, hw0_tls_ie(foo)' 3723 tls_first_major=2 3724 tls_first_minor=22 3725 tls_as_opt="--fatal-warnings" 3726 ;; 3727 xtensa*-*-*) 3728 conftest_s=' 3729 .section ".tdata","awT",@progbits 3730foo: .long 25 3731 .text 3732 movi a8, foo@TLSFUNC 3733 movi a10, foo@TLSARG 3734 callx8.tls a8, foo@TLSCALL' 3735 tls_first_major=2 3736 tls_first_minor=19 3737 ;; 3738changequote([,])dnl 3739esac 3740set_have_as_tls=no 3741if test "x$enable_tls" = xno ; then 3742 : # TLS explicitly disabled. 3743elif test "x$enable_tls" = xyes ; then 3744 set_have_as_tls=yes # TLS explicitly enabled. 3745elif test -z "$tls_first_major"; then 3746 : # If we don't have a check, assume no support. 3747else 3748 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls, 3749 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],, 3750 [set_have_as_tls=yes]) 3751fi 3752if test $set_have_as_tls = yes ; then 3753 AC_DEFINE(HAVE_AS_TLS, 1, 3754 [Define if your assembler and linker support thread-local storage.]) 3755fi 3756 3757# Target-specific assembler checks. 3758 3759AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option) 3760gcc_cv_ld_static_dynamic=no 3761gcc_cv_ld_static_option='-Bstatic' 3762gcc_cv_ld_dynamic_option='-Bdynamic' 3763if test $in_tree_ld = yes ; then 3764 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then 3765 gcc_cv_ld_static_dynamic=yes 3766 fi 3767elif test x$gcc_cv_ld != x; then 3768 # Check if linker supports -Bstatic/-Bdynamic option 3769 if $gcc_cv_ld --help 2>&1 | grep -- -Bstatic > /dev/null \ 3770 && $gcc_cv_ld --help 2>&1 | grep -- -Bdynamic > /dev/null; then 3771 gcc_cv_ld_static_dynamic=yes 3772 else 3773 case "$target" in 3774 # AIX ld uses -b flags 3775 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*) 3776 gcc_cv_ld_static_dynamic=yes 3777 gcc_cv_ld_static_option="-bstatic" 3778 gcc_cv_ld_dynamic_option="-bdynamic" 3779 ;; 3780 # HP-UX ld uses -a flags to select between shared and archive. 3781 *-*-hpux*) 3782 if test x"$gnu_ld" = xno; then 3783 gcc_cv_ld_static_dynamic=yes 3784 gcc_cv_ld_static_option="-aarchive_shared" 3785 gcc_cv_ld_dynamic_option="-adefault" 3786 fi 3787 ;; 3788 # Solaris 2 ld always supports -Bstatic/-Bdynamic. 3789 *-*-solaris2*) 3790 gcc_cv_ld_static_dynamic=yes 3791 ;; 3792 esac 3793 fi 3794fi 3795if test x"$gcc_cv_ld_static_dynamic" = xyes; then 3796 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1, 3797[Define if your linker supports -Bstatic/-Bdynamic or equivalent options.]) 3798 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option", 3799[Define to the linker option to disable use of shared objects.]) 3800 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option", 3801[Define to the linker option to enable use of shared objects.]) 3802fi 3803AC_MSG_RESULT($gcc_cv_ld_static_dynamic) 3804 3805AC_MSG_CHECKING(linker --version-script option) 3806gcc_cv_ld_version_script=no 3807ld_version_script_option='' 3808if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then 3809 gcc_cv_ld_version_script=yes 3810 ld_version_script_option='--version-script' 3811elif test x$gcc_cv_ld != x; then 3812 case "$target" in 3813 # Solaris 2 ld always supports -M. It also supports a subset of 3814 # --version-script since Solaris 11.4, but requires 3815 # -z gnu-version-script-compat to activate. 3816 *-*-solaris2*) 3817 gcc_cv_ld_version_script=yes 3818 ld_version_script_option='-M' 3819 ;; 3820 esac 3821fi 3822# Don't AC_DEFINE result, only used in jit/Make-lang.in so far. 3823AC_MSG_RESULT($gcc_cv_ld_version_script) 3824AC_SUBST(ld_version_script_option) 3825 3826AC_MSG_CHECKING(linker soname option) 3827gcc_cv_ld_soname=no 3828if test $in_tree_ld = yes || test x"$gnu_ld" = xyes; then 3829 gcc_cv_ld_soname=yes 3830 ld_soname_option='-soname' 3831elif test x$gcc_cv_ld != x; then 3832 case "$target" in 3833 *-*-darwin*) 3834 gcc_cv_ld_soname=yes 3835 ld_soname_option='-install_name' 3836 ;; 3837 # Solaris 2 ld always supports -h. It also supports --soname for GNU 3838 # ld compatiblity since some Solaris 10 update. 3839 *-*-solaris2*) 3840 gcc_cv_ld_soname=yes 3841 ld_soname_option='-h' 3842 ;; 3843 esac 3844fi 3845# Don't AC_DEFINE result, only used in jit/Make-lang.in so far. 3846AC_MSG_RESULT($gcc_cv_ld_soname) 3847AC_SUBST(ld_soname_option) 3848 3849if test x"$demangler_in_ld" = xyes; then 3850 AC_MSG_CHECKING(linker --demangle support) 3851 gcc_cv_ld_demangle=no 3852 if test $in_tree_ld = yes; then 3853 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \ 3854 gcc_cv_ld_demangle=yes 3855 fi 3856 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then 3857 # Check if the GNU linker supports --demangle option 3858 if $gcc_cv_ld --help 2>&1 | grep no-demangle > /dev/null; then 3859 gcc_cv_ld_demangle=yes 3860 fi 3861 fi 3862 if test x"$gcc_cv_ld_demangle" = xyes; then 3863 AC_DEFINE(HAVE_LD_DEMANGLE, 1, 3864[Define if your linker supports --demangle option.]) 3865 fi 3866 AC_MSG_RESULT($gcc_cv_ld_demangle) 3867fi 3868 3869AC_MSG_CHECKING(linker plugin support) 3870gcc_cv_lto_plugin=0 3871if test -f liblto_plugin.la; then 3872 save_ld_ver="$ld_ver" 3873 save_ld_vers_major="$ld_vers_major" 3874 save_ld_vers_minor="$ld_vers_minor" 3875 save_ld_is_gold="$ld_is_gold" 3876 3877 ld_is_gold=no 3878 3879 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then 3880 ld_ver="GNU ld" 3881 # FIXME: ld_is_gold? 3882 ld_vers_major="$gcc_cv_gld_major_version" 3883 ld_vers_minor="$gcc_cv_gld_minor_version" 3884 else 3885 # Determine plugin linker version. 3886 # FIXME: Partial duplicate from above, generalize. 3887changequote(,)dnl 3888 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q` 3889 if echo "$ld_ver" | grep GNU > /dev/null; then 3890 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then 3891 ld_is_gold=yes 3892 ld_vers=`echo $ld_ver | sed -n \ 3893 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'` 3894 else 3895 ld_vers=`echo $ld_ver | sed -n \ 3896 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'` 3897 fi 3898 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'` 3899 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'` 3900 fi 3901changequote([,])dnl 3902 fi 3903 3904 # Determine plugin support. 3905 if echo "$ld_ver" | grep GNU > /dev/null; then 3906 # Require GNU ld or gold 2.21+ for plugin support by default. 3907 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then 3908 gcc_cv_lto_plugin=2 3909 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20. 3910 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then 3911 gcc_cv_lto_plugin=1 3912 fi 3913 fi 3914 3915 ld_ver="$save_ld_ver" 3916 ld_vers_major="$save_ld_vers_major" 3917 ld_vers_minor="$save_ld_vers_minor" 3918 ld_is_gold="$save_ld_is_gold" 3919fi 3920AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin, 3921 [Define to the level of your linker's plugin support.]) 3922AC_MSG_RESULT($gcc_cv_lto_plugin) 3923 3924# Target OS-specific assembler checks. 3925 3926case "$target_os" in 3927 darwin*) 3928 gcc_GAS_CHECK_FEATURE([-mmacosx-version-min option], 3929 gcc_cv_as_mmacosx_version_min,, 3930 [-mmacosx-version-min=10.1], [.text],, 3931 [AC_DEFINE(HAVE_AS_MMACOSX_VERSION_MIN_OPTION, 1, 3932 [Define if your Mac OS X assembler supports the -mmacos-version-min option.])]) 3933 ;; 3934esac 3935 3936# Target CPU-specific assembler checks. 3937 3938case "$target" in 3939 aarch64*-*-*) 3940 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,, 3941 [-mabi=lp64], [.text],,,) 3942 if test x$gcc_cv_as_aarch64_mabi = xyes; then 3943 AC_DEFINE(HAVE_AS_MABI_OPTION, 1, 3944 [Define if your assembler supports the -mabi option.]) 3945 else 3946 if test x$with_abi = xilp32; then 3947 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\ 3948 Upgrade the Assembler.]) 3949 fi 3950 if test x"$with_multilib_list" = xdefault; then 3951 TM_MULTILIB_CONFIG=lp64 3952 else 3953 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'` 3954 for aarch64_multilib in ${aarch64_multilibs}; do 3955 case ${aarch64_multilib} in 3956 ilp32) 3957 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\ 3958 Upgrade the Assembler.]) 3959 ;; 3960 *) 3961 ;; 3962 esac 3963 done 3964 fi 3965 fi 3966 # Check if we have binutils support for relocations types needed by -fpic 3967 gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,, 3968 [ 3969 .text 3970 ldr x0, [[x2, #:gotpage_lo15:globalsym]] 3971 ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1, 3972 [Define if your assembler supports relocs needed by -fpic.])]) 3973 # Enable Branch Target Identification Mechanism and Return Address 3974 # Signing by default. 3975 AC_ARG_ENABLE(standard-branch-protection, 3976 [ 3977AS_HELP_STRING([--enable-standard-branch-protection], 3978 [enable Branch Target Identification Mechanism and Return Address Signing by default for AArch64]) 3979AS_HELP_STRING([--disable-standard-branch-protection], 3980 [disable Branch Target Identification Mechanism and Return Address Signing by default for AArch64]) 3981 ], 3982 [ 3983 case $enableval in 3984 yes) 3985 tm_defines="${tm_defines} TARGET_ENABLE_BTI=1 TARGET_ENABLE_PAC_RET=1" 3986 ;; 3987 no) 3988 ;; 3989 *) 3990 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-standard-branch-protection.\ 3991 Valid choices are 'yes' and 'no'.]) 3992 ;; 3993 esac 3994 ], 3995 []) 3996 # Enable default workaround for AArch64 Cortex-A53 erratum 835769. 3997 AC_ARG_ENABLE(fix-cortex-a53-835769, 3998 [ 3999AS_HELP_STRING([--enable-fix-cortex-a53-835769], 4000 [enable workaround for AArch64 Cortex-A53 erratum 835769 by default]) 4001AS_HELP_STRING([--disable-fix-cortex-a53-835769], 4002 [disable workaround for AArch64 Cortex-A53 erratum 835769 by default]) 4003 ], 4004 [ 4005 case $enableval in 4006 yes) 4007 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1" 4008 ;; 4009 no) 4010 ;; 4011 *) 4012 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\ 4013 Valid choices are 'yes' and 'no'.]) 4014 ;; 4015 4016 esac 4017 ], 4018 []) 4019 # Enable default workaround for AArch64 Cortex-A53 erratum 843419. 4020 AC_ARG_ENABLE(fix-cortex-a53-843419, 4021 [ 4022AS_HELP_STRING([--enable-fix-cortex-a53-843419], 4023 [enable workaround for AArch64 Cortex-A53 erratum 843419 by default]) 4024AS_HELP_STRING([--disable-fix-cortex-a53-843419], 4025 [disable workaround for AArch64 Cortex-A53 erratum 843419 by default]) 4026 ], 4027 [ 4028 case $enableval in 4029 yes) 4030 tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1" 4031 ;; 4032 no) 4033 ;; 4034 *) 4035 AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\ 4036 Valid choices are 'yes' and 'no'.]) 4037 ;; 4038 4039 esac 4040 ], 4041 []) 4042 ;; 4043 4044 # All TARGET_ABI_OSF targets. 4045 alpha*-*-linux* | alpha*-*-*bsd*) 4046 gcc_GAS_CHECK_FEATURE([explicit relocation support], 4047 gcc_cv_as_alpha_explicit_relocs, [2,12,0],, 4048[ .set nomacro 4049 .text 4050 extbl $3, $2, $3 !lituse_bytoff!1 4051 ldq $2, a($29) !literal!1 4052 ldq $4, b($29) !literal!2 4053 ldq_u $3, 0($2) !lituse_base!1 4054 ldq $27, f($29) !literal!5 4055 jsr $26, ($27), f !lituse_jsr!5 4056 ldah $29, 0($26) !gpdisp!3 4057 lda $0, c($29) !gprel 4058 ldah $1, d($29) !gprelhigh 4059 lda $1, d($1) !gprellow 4060 lda $29, 0($29) !gpdisp!3],, 4061 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1, 4062 [Define if your assembler supports explicit relocations.])]) 4063 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support], 4064 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],, 4065[ .set nomacro 4066 .text 4067 ldq $27, a($29) !literal!1 4068 jsr $26, ($27), a !lituse_jsrdirect!1],, 4069 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1, 4070 [Define if your assembler supports the lituse_jsrdirect relocation.])]) 4071 ;; 4072 4073 avr-*-*) 4074 gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,, 4075 [--mlink-relax], [.text],, 4076 [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1, 4077 [Define if your avr assembler supports --mlink-relax option.])]) 4078 4079 gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,, 4080 [-mrmw], [.text],, 4081 [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1, 4082 [Define if your avr assembler supports -mrmw option.])]) 4083 4084 gcc_GAS_CHECK_FEATURE([__gcc_isr pseudo instruction], 4085 gcc_cv_as_avr_mgccisr,, 4086 [-mgcc-isr], [.text 4087 __gcc_isr 1 4088 __gcc_isr 2 4089 __gcc_isr 0,r24 4090 ],, 4091 [AC_DEFINE(HAVE_AS_AVR_MGCCISR_OPTION, 1, 4092 [Define if your avr assembler supports -mgcc-isr option.])]) 4093 4094 # Check how default linker description file implements .rodata for 4095 # avrxmega3 (PR21472). avr-gcc assumes .rodata is *not* loaded to 4096 # RAM so avr-gcc skips __do_copy_data for .rodata objects. 4097 AC_MSG_CHECKING(binutils for avrxmega3 .rodata support) 4098 cat > conftest.s <<EOF 4099 .section .rodata,"a",@progbits 4100 .global xxvaryy 4101 ;; avr-nm should print "... R xxvaryy", not "... D xxvaryy". 4102 xxvaryy: 4103 .word 1 4104EOF 4105 rm -f conftest.nm 4106 AC_TRY_COMMAND([$gcc_cv_as -mmcu=avrxmega3 conftest.s -o conftest.o]) 4107 AC_TRY_COMMAND([$gcc_cv_ld -mavrxmega3 conftest.o -o conftest.elf]) 4108 AC_TRY_COMMAND([$gcc_cv_nm conftest.elf > conftest.nm]) 4109 if test -s conftest.nm 4110 then 4111 if grep ' R xxvaryy' conftest.nm > /dev/null; then 4112 AC_MSG_RESULT(yes) 4113 AC_DEFINE(HAVE_LD_AVR_AVRXMEGA3_RODATA_IN_FLASH, 1, 4114 [Define if your default avr linker script for avrxmega3 leaves .rodata in flash.]) 4115 else 4116 AC_MSG_RESULT(no: avrxmega3 .rodata located in RAM) 4117 echo "$as_me: nm output was" >&AS_MESSAGE_LOG_FD 4118 cat conftest.nm >&AS_MESSAGE_LOG_FD 4119 avr_ld_ver="`$gcc_cv_ld -v | sed -e 's:^.* ::'`" 4120 AC_MSG_WARN([[support for avrxmega3 .rodata in flash needs Binutils 2.29 or higher (have $avr_ld_ver)]]) 4121 fi 4122 else 4123 AC_MSG_RESULT(test failed) 4124 echo "$as_me: failed program was" >&AS_MESSAGE_LOG_FD 4125 cat conftest.s >&AS_MESSAGE_LOG_FD 4126 AC_MSG_WARN([[see `config.log' for details]]) 4127 fi 4128 rm -f conftest.s conftest.o conftest.elf conftest.nm 4129 ;; 4130 4131 cris-*-*) 4132 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option], 4133 gcc_cv_as_cris_no_mul_bug,[2,15,91], 4134 [-no-mul-bug-abort], [.text],, 4135 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1, 4136 [Define if your assembler supports the -no-mul-bug-abort option.])]) 4137 ;; 4138 4139 sparc*-*-*) 4140 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,, 4141 [-relax], [.text],, 4142 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1, 4143 [Define if your assembler supports -relax option.])]) 4144 4145 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs], 4146 gcc_cv_as_sparc_gotdata_op,, 4147 [-K PIC], 4148[.text 4149.align 4 4150foo: 4151 nop 4152bar: 4153 sethi %gdop_hix22(foo), %g1 4154 xor %g1, %gdop_lox10(foo), %g1 4155 ld [[%l7 + %g1]], %g2, %gdop(foo)], 4156 [if test x$gcc_cv_ld != x \ 4157 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then 4158 if test x$gcc_cv_objdump != x; then 4159 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \ 4160 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then 4161 gcc_cv_as_sparc_gotdata_op=no 4162 else 4163 gcc_cv_as_sparc_gotdata_op=yes 4164 fi 4165 fi 4166 fi 4167 rm -f conftest], 4168 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1, 4169 [Define if your assembler and linker support GOTDATA_OP relocs.])]) 4170 4171 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs], 4172 gcc_cv_as_sparc_ua_pcrel,, 4173 [-K PIC], 4174[.text 4175foo: 4176 nop 4177.data 4178.align 4 4179.byte 0 4180.uaword %r_disp32(foo)], 4181 [if test x$gcc_cv_ld != x \ 4182 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then 4183 gcc_cv_as_sparc_ua_pcrel=yes 4184 fi 4185 rm -f conftest], 4186 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1, 4187 [Define if your assembler and linker support unaligned PC relative relocs.]) 4188 4189 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols], 4190 gcc_cv_as_sparc_ua_pcrel_hidden,, 4191 [-K PIC], 4192[.data 4193.align 4 4194.byte 0x31 4195.uaword %r_disp32(foo) 4196.byte 0x32, 0x33, 0x34 4197.global foo 4198.hidden foo 4199foo: 4200.skip 4], 4201 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \ 4202 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \ 4203 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \ 4204 | grep ' 31000000 07323334' > /dev/null 2>&1; then 4205 if $gcc_cv_objdump -R conftest 2> /dev/null \ 4206 | grep 'DISP32' > /dev/null 2>&1; then 4207 : 4208 else 4209 gcc_cv_as_sparc_ua_pcrel_hidden=yes 4210 fi 4211 fi 4212 rm -f conftest], 4213 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1, 4214 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])]) 4215 ]) # unaligned pcrel relocs 4216 4217 gcc_GAS_CHECK_FEATURE([offsetable %lo()], 4218 gcc_cv_as_sparc_offsetable_lo10,, 4219 [-xarch=v9], 4220[.text 4221 or %g1, %lo(ab) + 12, %g1 4222 or %g1, %lo(ab + 12), %g1], 4223 [if test x$gcc_cv_objdump != x \ 4224 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \ 4225 | grep ' 82106000 82106000' > /dev/null 2>&1; then 4226 gcc_cv_as_sparc_offsetable_lo10=yes 4227 fi], 4228 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1, 4229 [Define if your assembler supports offsetable %lo().])]) 4230 4231 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions], 4232 gcc_cv_as_sparc_fmaf,, 4233 [-xarch=v9d], 4234 [.text 4235 .register %g2, #scratch 4236 .register %g3, #scratch 4237 .align 4 4238 fmaddd %f0, %f2, %f4, %f6 4239 addxccc %g1, %g2, %g3 4240 fsrl32 %f2, %f4, %f8 4241 fnaddd %f10, %f12, %f14],, 4242 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1, 4243 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])]) 4244 4245 gcc_GAS_CHECK_FEATURE([SPARC4 instructions], 4246 gcc_cv_as_sparc_sparc4,, 4247 [-xarch=sparc4], 4248 [.text 4249 .register %g2, #scratch 4250 .register %g3, #scratch 4251 .align 4 4252 cxbe %g2, %g3, 1f 42531: cwbneg %g2, %g3, 1f 42541: sha1 4255 md5 4256 aes_kexpand0 %f4, %f6, %f8 4257 des_round %f38, %f40, %f42, %f44 4258 camellia_f %f54, %f56, %f58, %f60 4259 kasumi_fi_xor %f46, %f48, %f50, %f52],, 4260 [AC_DEFINE(HAVE_AS_SPARC4, 1, 4261 [Define if your assembler supports SPARC4 instructions.])]) 4262 4263 gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions], 4264 gcc_cv_as_sparc_sparc5,, 4265 [-xarch=sparc5], 4266 [.text 4267 .register %g2, #scratch 4268 .register %g3, #scratch 4269 .align 4 4270 subxc %g1, %g2, %g3 4271 fpadd8 %f0, %f2, %f4],, 4272 [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1, 4273 [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])]) 4274 4275 gcc_GAS_CHECK_FEATURE([SPARC6 instructions], 4276 gcc_cv_as_sparc_sparc6,, 4277 [-xarch=sparc6], 4278 [.text 4279 .register %g2, #scratch 4280 .register %g3, #scratch 4281 .align 4 4282 rd %entropy, %g1 4283 fpsll64x %f0, %f2, %f4],, 4284 [AC_DEFINE(HAVE_AS_SPARC6, 1, 4285 [Define if your assembler supports SPARC6 instructions.])]) 4286 4287 gcc_GAS_CHECK_FEATURE([LEON instructions], 4288 gcc_cv_as_sparc_leon,, 4289 [-Aleon], 4290 [.text 4291 .register %g2, #scratch 4292 .register %g3, #scratch 4293 .align 4 4294 smac %g2, %g3, %g1 4295 umac %g2, %g3, %g1 4296 casa [[%g2]] 0xb, %g3, %g1],, 4297 [AC_DEFINE(HAVE_AS_LEON, 1, 4298 [Define if your assembler supports LEON instructions.])]) 4299 ;; 4300 4301changequote(,)dnl 4302 i[34567]86-*-* | x86_64-*-*) 4303changequote([,])dnl 4304 case $target_os in 4305 cygwin*) 4306 # Full C++ conformance when using a shared libstdc++-v3 requires some 4307 # support from the Cygwin DLL, which in more recent versions exports 4308 # wrappers to aid in interposing and redirecting operators new, delete, 4309 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we 4310 # are configuring for a version of Cygwin that exports the wrappers. 4311 if test x$host = x$target && test x$host_cpu = xi686; then 4312 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no]) 4313 else 4314 # Can't check presence of libc functions during cross-compile, so 4315 # we just have to assume we're building for an up-to-date target. 4316 gcc_ac_cygwin_dll_wrappers=yes 4317 fi 4318 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS, 4319 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`], 4320 [Define if you want to generate code by default that assumes that the 4321 Cygwin DLL exports wrappers to support libstdc++ function replacement.]) 4322 esac 4323 case $target_os in 4324 cygwin* | pe | mingw32*) 4325 # Recent binutils allows the three-operand form of ".comm" on PE. This 4326 # definition is used unconditionally to initialise the default state of 4327 # the target option variable that governs usage of the feature. 4328 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align, 4329 [2,19,52],,[.comm foo,1,32]) 4330 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM, 4331 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`], 4332 [Define if your assembler supports specifying the alignment 4333 of objects allocated using the GAS .comm command.]) 4334 # Used for DWARF 2 in PE 4335 gcc_GAS_CHECK_FEATURE([.secrel32 relocs], 4336 gcc_cv_as_ix86_pe_secrel32, 4337 [2,15,91],, 4338[.text 4339foo: nop 4340.data 4341 .secrel32 foo], 4342 [if test x$gcc_cv_ld != x \ 4343 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then 4344 gcc_cv_as_ix86_pe_secrel32=yes 4345 fi 4346 rm -f conftest], 4347 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1, 4348 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])]) 4349 # Test if the assembler supports the extended form of the .section 4350 # directive that specifies section alignment. LTO support uses this, 4351 # but normally only after installation, so we warn but don't fail the 4352 # configure if LTO is enabled but the assembler does not support it. 4353 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align, 4354 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"]) 4355 if test x$gcc_cv_as_section_has_align != xyes; then 4356 case ",$enable_languages," in 4357 *,lto,*) 4358 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.]) 4359 ;; 4360 esac 4361 fi 4362 ;; 4363 esac 4364 4365 gcc_GAS_CHECK_FEATURE([-xbrace_comment], gcc_cv_as_ix86_xbrace_comment,, 4366 [-xbrace_comment=no], [.text],, 4367 [AC_DEFINE(HAVE_AS_XBRACE_COMMENT_OPTION, 1, 4368 [Define if your assembler supports -xbrace_comment option.])]) 4369 4370 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics], 4371 gcc_cv_as_ix86_filds,,, 4372 [filds (%ebp); fists (%ebp)],, 4373 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1, 4374 [Define if your assembler uses filds and fists mnemonics.])]) 4375 4376 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics], 4377 gcc_cv_as_ix86_fildq,,, 4378 [fildq (%ebp); fistpq (%ebp)],, 4379 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1, 4380 [Define if your assembler uses fildq and fistq mnemonics.])]) 4381 4382 gcc_GAS_CHECK_FEATURE([cmov syntax], 4383 gcc_cv_as_ix86_cmov_sun_syntax,,, 4384 [cmovl.l %edx, %eax],, 4385 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1, 4386 [Define if your assembler supports the Sun syntax for cmov.])]) 4387 4388 gcc_GAS_CHECK_FEATURE([ffreep mnemonic], 4389 gcc_cv_as_ix86_ffreep,,, 4390 [ffreep %st(1)],, 4391 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1, 4392 [Define if your assembler supports the ffreep mnemonic.])]) 4393 4394 gcc_GAS_CHECK_FEATURE([.quad directive], 4395 gcc_cv_as_ix86_quad,,, 4396 [.quad 0],, 4397 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1, 4398 [Define if your assembler supports the .quad directive.])]) 4399 4400 gcc_GAS_CHECK_FEATURE([sahf mnemonic], 4401 gcc_cv_as_ix86_sahf,,, 4402 [.code64 4403 sahf],, 4404 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1, 4405 [Define if your assembler supports the sahf mnemonic in 64bit mode.])]) 4406 4407 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic], 4408 gcc_cv_as_ix86_interunit_movq,,, 4409 [.code64 4410 movq %mm0, %rax 4411 movq %rax, %xmm0]) 4412 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ, 4413 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`], 4414 [Define if your assembler supports interunit movq mnemonic.]) 4415 4416 gcc_GAS_CHECK_FEATURE([hle prefixes], 4417 gcc_cv_as_ix86_hle,,, 4418 [lock xacquire cmpxchg %esi, (%ecx)],, 4419 [AC_DEFINE(HAVE_AS_IX86_HLE, 1, 4420 [Define if your assembler supports HLE prefixes.])]) 4421 4422 gcc_GAS_CHECK_FEATURE([swap suffix], 4423 gcc_cv_as_ix86_swap,,, 4424 [movl.s %esp, %ebp],, 4425 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1, 4426 [Define if your assembler supports the swap suffix.])]) 4427 4428 gcc_GAS_CHECK_FEATURE([different section symbol subtraction], 4429 gcc_cv_as_ix86_diff_sect_delta,,, 4430 [.section .rodata 4431.L1: 4432 .long .L2-.L1 4433 .long .L3-.L1 4434 .text 4435.L3: nop 4436.L2: nop],, 4437 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1, 4438 [Define if your assembler supports the subtraction of symbols in different sections.])]) 4439 4440 gcc_GAS_CHECK_FEATURE([rep and lock prefix], 4441 gcc_cv_as_ix86_rep_lock_prefix,,, 4442 [rep movsl 4443 rep ret 4444 rep nop 4445 rep bsf %ecx, %eax 4446 rep bsr %ecx, %eax 4447 lock addl %edi, (%eax,%esi) 4448 lock orl $0, (%esp)],, 4449 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1, 4450 [Define if the assembler supports 'rep <insn>, lock <insn>'.])]) 4451 4452 gcc_GAS_CHECK_FEATURE([ud2 mnemonic], 4453 gcc_cv_as_ix86_ud2,,, 4454 [ud2],, 4455 [AC_DEFINE(HAVE_AS_IX86_UD2, 1, 4456 [Define if your assembler supports the 'ud2' mnemonic.])]) 4457 4458 # Enforce 32-bit output with gas and gld. 4459 if test x$gas = xyes; then 4460 as_ix86_gas_32_opt="--32" 4461 fi 4462 if echo "$ld_ver" | grep GNU > /dev/null; then 4463 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then 4464 ld_ix86_gld_32_opt="-melf_i386_sol2" 4465 else 4466 ld_ix86_gld_32_opt="-melf_i386" 4467 fi 4468 fi 4469 4470 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc], 4471 gcc_cv_as_ix86_tlsgdplt,, 4472 [$as_ix86_gas_32_opt], 4473 [call tls_gd@tlsgdplt], 4474 [if test x$gcc_cv_ld != x \ 4475 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then 4476 gcc_cv_as_ix86_tlsgdplt=yes 4477 fi 4478 rm -f conftest], 4479 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1, 4480 [Define if your assembler and linker support @tlsgdplt.])]) 4481 4482 conftest_s=' 4483 .section .tdata,"aw'$tls_section_flag'",@progbits 4484tls_ld: 4485 .section .text,"ax",@progbits 4486 call tls_ld@tlsldmplt' 4487 4488 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc], 4489 gcc_cv_as_ix86_tlsldmplt,, 4490 [$as_ix86_gas_32_opt], 4491 [$conftest_s], 4492 [if test x$gcc_cv_ld != x \ 4493 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then 4494 gcc_cv_as_ix86_tlsldmplt=yes 4495 fi 4496 rm -f conftest]) 4497 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT, 4498 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`], 4499 [Define to 1 if your assembler and linker support @tlsldmplt.]) 4500 4501 conftest_s=' 4502 .section .text,"ax",@progbits 4503 .globl _start 4504 .type _start, @function 4505_start: 4506 leal value@tlsldm(%ebx), %eax 4507 call ___tls_get_addr@plt 4508 4509 .section .tdata,"aw'$tls_section_flag'",@progbits 4510 .type value, @object 4511value:' 4512 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc], 4513 gcc_cv_as_ix86_tlsldm,, 4514 [$as_ix86_gas_32_opt], 4515 [$conftest_s], 4516 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \ 4517 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then 4518 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \ 4519 || dis conftest 2>/dev/null | grep nop > /dev/null; then 4520 gcc_cv_as_ix86_tlsldm=yes 4521 fi 4522 fi 4523 rm -f conftest]) 4524 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM, 4525 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`], 4526 [Define to 1 if your assembler and linker support @tlsldm.]) 4527 4528 conftest_s=' 4529 .data 4530bar: 4531 .byte 1 4532 .text 4533 .global _start 4534_start: 4535 cmpl $0, bar@GOT 4536 jmp *_start@GOT' 4537 gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc], 4538 gcc_cv_as_ix86_got32x,, 4539 [$as_ix86_gas_32_opt], 4540 [$conftest_s], 4541 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \ 4542 && test x$gcc_cv_readelf != x \ 4543 && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \ 4544 | grep R_386_GOT32X > /dev/null 2>&1 \ 4545 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then 4546 if $gcc_cv_objdump -dw conftest 2>&1 \ 4547 | grep 0xffffff > /dev/null 2>&1; then 4548 gcc_cv_as_ix86_got32x=no 4549 else 4550 gcc_cv_as_ix86_got32x=yes 4551 fi 4552 fi 4553 rm -f conftest]) 4554 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X, 4555 [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`], 4556 [Define 0/1 if your assembler and linker support @GOT.]) 4557 4558 gcc_GAS_CHECK_FEATURE([GOTOFF in data], 4559 gcc_cv_as_ix86_gotoff_in_data, [2,11,0], 4560 [$as_ix86_gas_32_opt], 4561[ .text 4562.L0: 4563 nop 4564 .data 4565 .long .L0@GOTOFF]) 4566 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA, 4567 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`], 4568 [Define true if the assembler supports '.long foo@GOTOFF'.]) 4569 4570 conftest_s=' 4571 .section .text,"ax",@progbits 4572 .globl _start 4573 .type _start, @function 4574_start: 4575 leal ld@tlsldm(%ecx), %eax 4576 call *___tls_get_addr@GOT(%ecx) 4577 leal gd@tlsgd(%ecx), %eax 4578 call *___tls_get_addr@GOT(%ecx) 4579 4580 .section .tdata,"aw'$tls_section_flag'",@progbits 4581 .type ld, @object 4582ld: 4583 .byte 0 4584 .globl gd 4585 .type gd, @object 4586gd: 4587 .byte 0' 4588 gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT], 4589 gcc_cv_as_ix86_tls_get_addr_via_got,, 4590 [$as_ix86_gas_32_opt], 4591 [$conftest_s], 4592 [if test x$gcc_cv_ld != x \ 4593 && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then 4594 gcc_cv_as_ix86_tls_get_addr_via_got=yes 4595 fi 4596 rm -f conftest]) 4597 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT, 4598 [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`], 4599 [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.]) 4600 ;; 4601 4602 ia64*-*-*) 4603 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs], 4604 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],, 4605[ .text 4606 addl r15 = @ltoffx(x#), gp 4607 ;; 4608 ld8.mov r16 = [[r15]], x# 4609],, 4610 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1, 4611 [Define if your assembler supports ltoffx and ldxmov relocations.])]) 4612 4613 ;; 4614 4615 powerpc*-*-*) 4616 4617 case $target in 4618 *-*-darwin*) 4619 gcc_GAS_CHECK_FEATURE([.machine directive support], 4620 gcc_cv_as_machine_directive,,, 4621 [ .machine ppc7400]) 4622 if test x$gcc_cv_as_machine_directive != xyes; then 4623 echo "*** This target requires an assembler supporting \".machine\"" >&2 4624 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2 4625 test x$build = x$target && exit 1 4626 fi 4627 ;; 4628 esac 4629 4630 case $target in 4631 *-*-aix*) conftest_s=' .machine "pwr5" 4632 .csect .text[[PR]] 4633 mfcr 3,128';; 4634 *-*-darwin*) conftest_s=' .text 4635 mfcr r3,128';; 4636 *) conftest_s=' .machine power4 4637 .text 4638 mfcr 3,128';; 4639 esac 4640 4641 gcc_GAS_CHECK_FEATURE([mfcr field support], 4642 gcc_cv_as_powerpc_mfcrf, [2,14,0],, 4643 [$conftest_s],, 4644 [AC_DEFINE(HAVE_AS_MFCRF, 1, 4645 [Define if your assembler supports mfcr field.])]) 4646 4647 case $target in 4648 *-*-aix*) conftest_s=' .csect .text[[PR]] 4649LCF..0: 4650 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';; 4651 *-*-darwin*) 4652 conftest_s=' .text 4653LCF0: 4654 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';; 4655 *) conftest_s=' .text 4656.LCF0: 4657 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';; 4658 esac 4659 4660 gcc_GAS_CHECK_FEATURE([rel16 relocs], 4661 gcc_cv_as_powerpc_rel16, [2,17,0], -a32, 4662 [$conftest_s],, 4663 [AC_DEFINE(HAVE_AS_REL16, 1, 4664 [Define if your assembler supports R_PPC_REL16 relocs.])]) 4665 4666 case $target in 4667 *-*-aix*) conftest_s=' .machine "pwr7" 4668 .csect .text[[PR]] 4669 lxvd2x 1,2,3';; 4670 *) conftest_s=' .machine power7 4671 .text 4672 lxvd2x 1,2,3';; 4673 esac 4674 4675 gcc_GAS_CHECK_FEATURE([vector-scalar support], 4676 gcc_cv_as_powerpc_vsx, [2,19,2], -a32, 4677 [$conftest_s],, 4678 [AC_DEFINE(HAVE_AS_VSX, 1, 4679 [Define if your assembler supports VSX instructions.])]) 4680 4681 gcc_GAS_CHECK_FEATURE([.gnu_attribute support], 4682 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],, 4683 [.gnu_attribute 4,1],, 4684 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1, 4685 [Define if your assembler supports .gnu_attribute.])]) 4686 4687 gcc_GAS_CHECK_FEATURE([tls marker support], 4688 gcc_cv_as_powerpc_tls_markers, [2,20,0],, 4689 [ bl __tls_get_addr(x@tlsgd)],, 4690 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1, 4691 [Define if your assembler supports arg info for __tls_get_addr.])]) 4692 4693 gcc_GAS_CHECK_FEATURE([prologue entry point marker support], 4694 gcc_cv_as_powerpc_entry_markers, [2,26,0],-a64 --fatal-warnings, 4695 [ .reloc .,R_PPC64_ENTRY; nop],, 4696 [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1, 4697 [Define if your assembler supports the R_PPC64_ENTRY relocation.])]) 4698 4699 gcc_GAS_CHECK_FEATURE([plt sequence marker support], 4700 gcc_cv_as_powerpc_pltseq_markers, [2,31,0],-a32 --fatal-warnings, 4701 [ .reloc .,R_PPC_PLTSEQ; nop],, 4702 [AC_DEFINE(HAVE_AS_PLTSEQ, 1, 4703 [Define if your assembler supports R_PPC*_PLTSEQ relocations.])]) 4704 4705 case $target in 4706 *-*-aix*) 4707 gcc_GAS_CHECK_FEATURE([AIX .ref support], 4708 gcc_cv_as_aix_ref, [2,21,0],, 4709 [ .csect stuff[[rw]] 4710 stuff: 4711 .long 1 4712 .extern sym 4713 .ref sym 4714 ],, 4715 [AC_DEFINE(HAVE_AS_REF, 1, 4716 [Define if your assembler supports .ref])]) 4717 4718 gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support], 4719 gcc_cv_as_aix_dwloc, [2,21,0],, 4720 [ .dwsect 0xA0000 4721 Lframe..0: 4722 .vbyte 4,Lframe..0 4723 ],, 4724 [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1, 4725 [Define if your assembler supports AIX debug frame section label reference.])]) 4726 ;; 4727 esac 4728 ;; 4729 4730 mips*-*-*) 4731 gcc_GAS_CHECK_FEATURE([explicit relocation support], 4732 gcc_cv_as_mips_explicit_relocs, [2,14,0],, 4733[ lw $4,%gp_rel(foo)($4)],, 4734 [if test x$target_cpu_default = x 4735 then target_cpu_default=MASK_EXPLICIT_RELOCS 4736 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS" 4737 fi]) 4738 4739 gcc_GAS_CHECK_FEATURE([-mno-shared support], 4740 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],, 4741 [AC_DEFINE(HAVE_AS_NO_SHARED, 1, 4742 [Define if the assembler understands -mno-shared.])]) 4743 4744 gcc_GAS_CHECK_FEATURE([.gnu_attribute support], 4745 gcc_cv_as_mips_gnu_attribute, [2,18,0],, 4746 [.gnu_attribute 4,1],, 4747 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1, 4748 [Define if your assembler supports .gnu_attribute.])]) 4749 4750 gcc_GAS_CHECK_FEATURE([.module support], 4751 gcc_cv_as_mips_dot_module,,[-32], 4752 [.module mips2 4753 .module fp=xx],, 4754 [AC_DEFINE(HAVE_AS_DOT_MODULE, 1, 4755 [Define if your assembler supports .module.])]) 4756 if test x$gcc_cv_as_mips_dot_module = xno \ 4757 && test x$with_fp_32 != x; then 4758 AC_MSG_ERROR( 4759 [Requesting --with-fp-32= requires assembler support for .module.]) 4760 fi 4761 4762 gcc_GAS_CHECK_FEATURE([.micromips support], 4763 gcc_cv_as_micromips_support,,[--fatal-warnings], 4764 [.set micromips],, 4765 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1, 4766 [Define if your assembler supports the .set micromips directive])]) 4767 4768 gcc_GAS_CHECK_FEATURE([.dtprelword support], 4769 gcc_cv_as_mips_dtprelword, [2,18,0],, 4770 [.section .tdata,"awT",@progbits 4771x: 4772 .word 2 4773 .text 4774 .dtprelword x+0x8000],, 4775 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1, 4776 [Define if your assembler supports .dtprelword.])]) 4777 4778 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support], 4779 gcc_cv_as_mips_dspr1_mult,,, 4780[ .set mips32r2 4781 .set nodspr2 4782 .set dsp 4783 madd $ac3,$4,$5 4784 maddu $ac3,$4,$5 4785 msub $ac3,$4,$5 4786 msubu $ac3,$4,$5 4787 mult $ac3,$4,$5 4788 multu $ac3,$4,$5],, 4789 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1, 4790 [Define if your assembler supports DSPR1 mult.])]) 4791 4792 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation) 4793 gcc_cv_as_ld_jalr_reloc=no 4794 if test $gcc_cv_as_mips_explicit_relocs = yes; then 4795 if test $in_tree_ld = yes ; then 4796 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \ 4797 && test $in_tree_ld_is_elf = yes; then 4798 gcc_cv_as_ld_jalr_reloc=yes 4799 fi 4800 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then 4801 echo ' .ent x' > conftest.s 4802 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s 4803 echo ' lw $25,%call16(y)($28)' >> conftest.s 4804 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s 4805 echo '1: jalr $25' >> conftest.s 4806 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s 4807 echo '1: jalr $25' >> conftest.s 4808 echo ' .end x' >> conftest.s 4809 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \ 4810 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then 4811 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \ 4812 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then 4813 gcc_cv_as_ld_jalr_reloc=yes 4814 fi 4815 fi 4816 rm -f conftest.* 4817 fi 4818 fi 4819 if test $gcc_cv_as_ld_jalr_reloc = yes; then 4820 if test x$target_cpu_default = x; then 4821 target_cpu_default=MASK_RELAX_PIC_CALLS 4822 else 4823 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS" 4824 fi 4825 fi 4826 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc) 4827 4828 AC_CACHE_CHECK([linker for .eh_frame personality relaxation], 4829 [gcc_cv_ld_mips_personality_relaxation], 4830 [gcc_cv_ld_mips_personality_relaxation=no 4831 if test $in_tree_ld = yes ; then 4832 if test "$gcc_cv_gld_major_version" -eq 2 \ 4833 -a "$gcc_cv_gld_minor_version" -ge 21 \ 4834 -o "$gcc_cv_gld_major_version" -gt 2; then 4835 gcc_cv_ld_mips_personality_relaxation=yes 4836 fi 4837 elif test x$gcc_cv_as != x \ 4838 -a x$gcc_cv_ld != x \ 4839 -a x$gcc_cv_readelf != x ; then 4840 cat > conftest.s <<EOF 4841 .cfi_startproc 4842 .cfi_personality 0x80,indirect_ptr 4843 .ent test 4844test: 4845 nop 4846 .end test 4847 .cfi_endproc 4848 4849 .section .data,"aw",@progbits 4850indirect_ptr: 4851 .dc.a personality 4852EOF 4853 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \ 4854 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then 4855 if $gcc_cv_readelf -d conftest 2>&1 \ 4856 | grep TEXTREL > /dev/null 2>&1; then 4857 : 4858 elif $gcc_cv_readelf --relocs conftest 2>&1 \ 4859 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then 4860 : 4861 else 4862 gcc_cv_ld_mips_personality_relaxation=yes 4863 fi 4864 fi 4865 fi 4866 rm -f conftest.s conftest.o conftest]) 4867 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then 4868 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1, 4869 [Define if your linker can relax absolute .eh_frame personality 4870pointers into PC-relative form.]) 4871 fi 4872 4873 gcc_GAS_CHECK_FEATURE([-mnan= support], 4874 gcc_cv_as_mips_nan,, 4875 [-mnan=2008],,, 4876 [AC_DEFINE(HAVE_AS_NAN, 1, 4877 [Define if the assembler understands -mnan=.])]) 4878 if test x$gcc_cv_as_mips_nan = xno \ 4879 && test x$with_nan != x; then 4880 AC_MSG_ERROR( 4881 [Requesting --with-nan= requires assembler support for -mnan=]) 4882 fi 4883 ;; 4884 riscv*-*-*) 4885 gcc_GAS_CHECK_FEATURE([.attribute support], 4886 gcc_cv_as_riscv_attribute, [2,32,0],, 4887 [.attribute stack_align,4],, 4888 [AC_DEFINE(HAVE_AS_RISCV_ATTRIBUTE, 1, 4889 [Define if your assembler supports .attribute.])]) 4890 ;; 4891 s390*-*-*) 4892 gcc_GAS_CHECK_FEATURE([.gnu_attribute support], 4893 gcc_cv_as_s390_gnu_attribute, [2,18,0],, 4894 [.gnu_attribute 8,1],, 4895 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1, 4896 [Define if your assembler supports .gnu_attribute.])]) 4897 gcc_GAS_CHECK_FEATURE([.machine and .machinemode support], 4898 gcc_cv_as_s390_machine_machinemode, [2,24,0],, 4899 [ .machinemode push 4900 .machinemode pop 4901 .machine push 4902 .machine pop],, 4903 [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1, 4904 [Define if your assembler supports .machine and .machinemode.])]) 4905 gcc_GAS_CHECK_FEATURE([architecture modifiers support], 4906 gcc_cv_as_s390_architecture_modifiers, [2,26,0],, 4907 [ .machine z13+vx ],, 4908 [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1, 4909 [Define if your assembler supports architecture modifiers.])]) 4910 gcc_GAS_CHECK_FEATURE([vector load/store alignment hints], 4911 gcc_cv_as_s390_vector_loadstore_alignment_hints, [2,31,0],, 4912 [ vl %v24,0(%r15),3 ],, 4913 [AC_DEFINE(HAVE_AS_VECTOR_LOADSTORE_ALIGNMENT_HINTS, 1, 4914 [Define if your assembler supports vl/vst/vlm/vstm with an optional alignment hint argument.])]) 4915 4916 ;; 4917esac 4918 4919# Mips and HP-UX need the GNU assembler. 4920# Linux on IA64 might be able to use the Intel assembler. 4921 4922case "$target" in 4923 mips*-*-* | *-*-hpux* ) 4924 if test x$gas_flag = xyes \ 4925 || test x"$host" != x"$build" \ 4926 || test ! -x "$gcc_cv_as" \ 4927 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then 4928 : 4929 else 4930 echo "*** This configuration requires the GNU assembler" >&2 4931 exit 1 4932 fi 4933 ;; 4934esac 4935 4936# ??? Not all targets support dwarf2 debug_line, even within a version 4937# of gas. Moreover, we need to emit a valid instruction to trigger any 4938# info to the output file. So, as supported targets are added to gas 2.11, 4939# add some instruction here to (also) show we expect this might work. 4940# ??? Once 2.11 is released, probably need to add first known working 4941# version to the per-target configury. 4942case "$cpu_type" in 4943 aarch64 | alpha | arc | arm | avr | bfin | cris | csky | i386 | m32c | m68k \ 4944 | microblaze | mips | nds32 | nios2 | pa | riscv | rs6000 | score | sparc | spu \ 4945 | tilegx | tilepro | visium | xstormy16 | xtensa) 4946 insn="nop" 4947 ;; 4948 ia64 | s390) 4949 insn="nop 0" 4950 ;; 4951 mmix) 4952 insn="swym 0" 4953 ;; 4954esac 4955if test x"$insn" != x; then 4956 conftest_s="\ 4957 .file 1 \"conftest.s\" 4958 .loc 1 3 0 4959 $insn" 4960 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support], 4961 gcc_cv_as_dwarf2_debug_line, 4962 [elf,2,11,0],, [$conftest_s], 4963 [if test x$gcc_cv_objdump != x \ 4964 && $gcc_cv_objdump -h conftest.o 2> /dev/null \ 4965 | grep debug_line > /dev/null 2>&1; then 4966 gcc_cv_as_dwarf2_debug_line=yes 4967 elif test x$gcc_cv_otool != x \ 4968 && $gcc_cv_otool -l conftest.o 2> /dev/null \ 4969 | grep debug_line > /dev/null 2>&1; then 4970 gcc_cv_as_dwarf2_debug_line=yes 4971 fi]) 4972 4973# The .debug_line file table must be in the exact order that 4974# we specified the files, since these indices are also used 4975# by DW_AT_decl_file. Approximate this test by testing if 4976# the assembler bitches if the same index is assigned twice. 4977 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive], 4978 gcc_cv_as_dwarf2_file_buggy,,, 4979[ .file 1 "foo.s" 4980 .file 1 "bar.s"]) 4981 4982 if test $gcc_cv_as_dwarf2_debug_line = yes \ 4983 && test $gcc_cv_as_dwarf2_file_buggy = no; then 4984 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1, 4985 [Define if your assembler supports dwarf2 .file/.loc directives, 4986 and preserves file table indices exactly as given.]) 4987 4988 if test $gcc_cv_as_leb128 = yes; then 4989 conftest_s="\ 4990 .file 1 \"conftest.s\" 4991 .loc 1 3 0 view .LVU1 4992 $insn 4993 .data 4994 .uleb128 .LVU1 4995 .uleb128 .LVU1 4996" 4997 gcc_GAS_CHECK_FEATURE([dwarf2 debug_view support], 4998 gcc_cv_as_dwarf2_debug_view, 4999 [elf,2,27,0],,[$conftest_s],, 5000 [AC_DEFINE(HAVE_AS_DWARF2_DEBUG_VIEW, 1, 5001 [Define if your assembler supports views in dwarf2 .loc directives.])]) 5002 fi 5003 fi 5004 5005 gcc_GAS_CHECK_FEATURE([--gdwarf2 option], 5006 gcc_cv_as_gdwarf2_flag, 5007 [elf,2,11,0], [--gdwarf2], [$insn],, 5008 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1, 5009[Define if your assembler supports the --gdwarf2 option.])]) 5010 5011 gcc_GAS_CHECK_FEATURE([--gstabs option], 5012 gcc_cv_as_gstabs_flag, 5013 [elf,2,11,0], [--gstabs], [$insn],, 5014 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1, 5015[Define if your assembler supports the --gstabs option.])]) 5016 5017 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option], 5018 gcc_cv_as_debug_prefix_map_flag, 5019 [2,18,0], [--debug-prefix-map /a=/b], [$insn],, 5020 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1, 5021[Define if your assembler supports the --debug-prefix-map option.])]) 5022fi 5023 5024gcc_GAS_CHECK_FEATURE([compressed debug sections], 5025 gcc_cv_as_compress_debug,,,, 5026 [# gas compiled without zlib cannot compress debug sections and warns 5027 # about it, but still exits successfully. So check for this, too. 5028 if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null 5029 then 5030 gcc_cv_as_compress_debug=0 5031 # Since binutils 2.26, gas supports --compress-debug-sections=type, 5032 # defaulting to the ELF gABI format. 5033 elif $gcc_cv_as --compress-debug-sections=zlib-gnu -o conftest.o conftest.s > /dev/null 2>&1 5034 then 5035 gcc_cv_as_compress_debug=2 5036 gcc_cv_as_compress_debug_option="--compress-debug-sections" 5037 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections" 5038 # Before binutils 2.26, gas only supported --compress-debug-options and 5039 # emitted the traditional GNU format. 5040 elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1 5041 then 5042 gcc_cv_as_compress_debug=1 5043 gcc_cv_as_compress_debug_option="--compress-debug-sections" 5044 gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections" 5045 else 5046 gcc_cv_as_compress_debug=0 5047 fi]) 5048AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug, 5049[Define to the level of your assembler's compressed debug section support.]) 5050AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option", 5051[Define to the assembler option to enable compressed debug sections.]) 5052AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option", 5053[Define to the assembler option to disable compressed debug sections.]) 5054 5055gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment, 5056 ,, 5057[.lcomm bar,4,16],, 5058[AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1, 5059 [Define if your assembler supports .lcomm with an alignment field.])]) 5060 5061if test x$with_sysroot = x && test x$host = x$target \ 5062 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \ 5063 && test "$prefix" != "NONE"; then 5064 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include", 5065[Define to PREFIX/include if cpp should also search that directory.]) 5066fi 5067 5068# Determine the version of glibc, if any, used on the target. 5069AC_MSG_CHECKING([for target glibc version]) 5070AC_ARG_WITH([glibc-version], 5071 [AS_HELP_STRING([--with-glibc-version=M.N], 5072 [assume GCC used with glibc version M.N or later])], [ 5073if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then 5074 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'` 5075 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'` 5076else 5077 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N]) 5078fi], [ 5079glibc_version_major=0 5080glibc_version_minor=0 5081[if test -f $target_header_dir/features.h \ 5082 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \ 5083 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then 5084 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'` 5085 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'` 5086fi]]) 5087AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor]) 5088AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major], 5089[GNU C Library major version number used on the target, or 0.]) 5090AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor], 5091[GNU C Library minor version number used on the target, or 0.]) 5092 5093AC_ARG_ENABLE(gnu-unique-object, 5094 [AS_HELP_STRING([--enable-gnu-unique-object], 5095 [enable the use of the @gnu_unique_object ELF extension on glibc systems])], 5096 [case $enable_gnu_unique_object in 5097 yes | no) ;; 5098 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object. 5099Valid choices are 'yes' and 'no'.]) ;; 5100 esac], 5101 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object, 5102 [elf,2,19,52],, 5103 [.type foo, '$target_type_format_char'gnu_unique_object],, 5104# We need to unquote above to to use the definition from config.gcc. 5105# Also check for ld.so support, i.e. glibc 2.11 or higher. 5106 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )] 5107 )]) 5108if test x$enable_gnu_unique_object = xyes; then 5109 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1, 5110 [Define if your assembler supports @gnu_unique_object.]) 5111fi 5112 5113AC_CACHE_CHECK([assembler for tolerance to line number 0], 5114 [gcc_cv_as_line_zero], 5115 [gcc_cv_as_line_zero=no 5116 if test $in_tree_gas = yes; then 5117 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes]) 5118 elif test "x$gcc_cv_as" != x; then 5119 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s 5120 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) && 5121 test "x`cat conftest.out`" = x 5122 then 5123 gcc_cv_as_line_zero=yes 5124 else 5125 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD 5126 cat conftest.s >&AS_MESSAGE_LOG_FD 5127 echo "configure: error output was" >&AS_MESSAGE_LOG_FD 5128 cat conftest.out >&AS_MESSAGE_LOG_FD 5129 fi 5130 rm -f conftest.o conftest.s conftest.out 5131 fi]) 5132if test "x$gcc_cv_as_line_zero" = xyes; then 5133 AC_DEFINE([HAVE_AS_LINE_ZERO], 1, 5134[Define if the assembler won't complain about a line such as # 0 "" 2.]) 5135fi 5136 5137AC_MSG_CHECKING(support for thin archives) 5138thin_archive_support=no 5139echo 'int main (void) { return 0; }' > conftest.c 5140if ($AR --version | sed 1q | grep "GNU ar" \ 5141 && $CC $CFLAGS -c conftest.c \ 5142 && $AR rcT conftest.a conftest.o \ 5143 && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then 5144 thin_archive_support=yes 5145fi 5146rm -f conftest.c conftest.o conftest.a conftest 5147AC_MSG_RESULT($thin_archive_support) 5148AC_SUBST(thin_archive_support) 5149 5150AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support) 5151gcc_cv_ld_eh_frame_hdr=no 5152if test $in_tree_ld = yes ; then 5153 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \ 5154 && test $in_tree_ld_is_elf = yes; then 5155 gcc_cv_ld_eh_frame_hdr=yes 5156 fi 5157elif test x$gcc_cv_ld != x; then 5158 if echo "$ld_ver" | grep GNU > /dev/null; then 5159 # Check if linker supports --eh-frame-hdr option 5160 if $gcc_cv_ld --help 2>&1 | grep eh-frame-hdr > /dev/null; then 5161 gcc_cv_ld_eh_frame_hdr=yes 5162 fi 5163 else 5164 case "$target" in 5165 *-*-solaris2*) 5166 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251. 5167 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then 5168 gcc_cv_ld_eh_frame_hdr=yes 5169 fi 5170 ;; 5171 esac 5172 fi 5173fi 5174GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR]) 5175if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then 5176 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1, 5177[Define if your linker supports .eh_frame_hdr.]) 5178fi 5179AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr) 5180 5181AC_MSG_CHECKING(linker CIEv3 in .eh_frame support) 5182gcc_cv_ld_eh_frame_ciev3=no 5183if test $in_tree_ld = yes ; then 5184 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \ 5185 && test $in_tree_ld_is_elf = yes; then 5186 gcc_cv_ld_eh_frame_ciev3=yes 5187 fi 5188elif test x$gcc_cv_ld != x; then 5189 if echo "$ld_ver" | grep GNU > /dev/null; then 5190 gcc_cv_ld_eh_frame_ciev3=yes 5191 if test 0"$ld_date" -lt 20040513; then 5192 if test -n "$ld_date"; then 5193 # If there was date string, but was earlier than 2004-05-13, fail 5194 gcc_cv_ld_eh_frame_ciev3=no 5195 elif test "$ld_vers_major" -lt 2; then 5196 gcc_cv_ld_eh_frame_ciev3=no 5197 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then 5198 gcc_cv_ld_eh_frame_ciev3=no 5199 fi 5200 fi 5201 else 5202 case "$target" in 5203 *-*-solaris2*) 5204 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1. 5205 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then 5206 gcc_cv_ld_eh_frame_ciev3=yes 5207 fi 5208 ;; 5209 esac 5210 fi 5211fi 5212AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3, 5213 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`], 5214 [Define 0/1 if your linker supports CIE v3 in .eh_frame.]) 5215AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3) 5216 5217AC_MSG_CHECKING(linker position independent executable support) 5218gcc_cv_ld_pie=no 5219if test $in_tree_ld = yes ; then 5220 case "$target" in 5221 # Full PIE support on Solaris was only introduced in gld 2.26. 5222 *-*-solaris2*) gcc_gld_pie_min_version=26 ;; 5223 *) gcc_gld_pie_min_version=15 ;; 5224 esac 5225 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 \ 5226 && test $in_tree_ld_is_elf = yes; then 5227 gcc_cv_ld_pie=yes 5228 fi 5229elif test x$gcc_cv_ld != x; then 5230 # Check if linker supports -pie option 5231 if $gcc_cv_ld --help 2>&1 | grep -- -pie > /dev/null; then 5232 gcc_cv_ld_pie=yes 5233 case "$target" in 5234 *-*-solaris2*) 5235 if echo "$ld_ver" | grep GNU > /dev/null \ 5236 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then 5237 gcc_cv_ld_pie=no 5238 fi 5239 ;; 5240 esac 5241 else 5242 case "$target" in 5243 *-*-solaris2.1[[1-9]]*) 5244 # Solaris 11.3 added PIE support. 5245 if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then 5246 gcc_cv_ld_pie=yes 5247 fi 5248 ;; 5249 esac 5250 fi 5251fi 5252if test x"$gcc_cv_ld_pie" = xyes; then 5253 AC_DEFINE(HAVE_LD_PIE, 1, 5254[Define if your linker supports PIE option.]) 5255fi 5256AC_MSG_RESULT($gcc_cv_ld_pie) 5257 5258AC_MSG_CHECKING(linker PIE support with copy reloc) 5259gcc_cv_ld_pie_copyreloc=no 5260if test $gcc_cv_ld_pie = yes ; then 5261 if test $in_tree_ld = yes ; then 5262 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then 5263 gcc_cv_ld_pie_copyreloc=yes 5264 fi 5265 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then 5266 # Check if linker supports -pie option with copy reloc 5267 case "$target" in 5268 i?86-*-linux* | x86_64-*-linux*) 5269 cat > conftest1.s <<EOF 5270 .globl a_glob 5271 .data 5272 .type a_glob, @object 5273 .size a_glob, 4 5274a_glob: 5275 .long 2 5276EOF 5277 cat > conftest2.s <<EOF 5278 .text 5279 .globl main 5280 .type main, @function 5281main: 5282 movl %eax, a_glob(%rip) 5283 .size main, .-main 5284 .globl ptr 5285 .section .data.rel,"aw",@progbits 5286 .type ptr, @object 5287ptr: 5288 .quad a_glob 5289EOF 5290 if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \ 5291 && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \ 5292 && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \ 5293 && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then 5294 gcc_cv_ld_pie_copyreloc=yes 5295 fi 5296 rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s 5297 ;; 5298 esac 5299 fi 5300fi 5301AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC, 5302 [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`], 5303 [Define 0/1 if your linker supports -pie option with copy reloc.]) 5304AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc) 5305 5306AC_MSG_CHECKING(linker EH-compatible garbage collection of sections) 5307gcc_cv_ld_eh_gc_sections=no 5308if test $in_tree_ld = yes ; then 5309 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \ 5310 && test $in_tree_ld_is_elf = yes; then 5311 gcc_cv_ld_eh_gc_sections=yes 5312 fi 5313elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then 5314 cat > conftest.s <<EOF 5315 .section .text 5316.globl _start 5317 .type _start, @function 5318_start: 5319 .long foo 5320 .size _start, .-_start 5321 .section .text.foo,"ax",@progbits 5322 .type foo, @function 5323foo: 5324 .long 0 5325 .size foo, .-foo 5326 .section .gcc_except_table.foo,"a",@progbits 5327.L0: 5328 .long 0 5329 .section .eh_frame,"a",@progbits 5330 .long .L0 5331EOF 5332 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then 5333 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \ 5334 | grep "gc-sections option ignored" > /dev/null; then 5335 gcc_cv_ld_eh_gc_sections=no 5336 elif $gcc_cv_objdump -h conftest 2> /dev/null \ 5337 | grep gcc_except_table > /dev/null; then 5338 gcc_cv_ld_eh_gc_sections=yes 5339 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections. 5340 if test x$gcc_cv_as_comdat_group != xyes; then 5341 gcc_cv_ld_eh_gc_sections=no 5342 cat > conftest.s <<EOF 5343 .section .text 5344.globl _start 5345 .type _start, @function 5346_start: 5347 .long foo 5348 .size _start, .-_start 5349 .section .gnu.linkonce.t.foo,"ax",@progbits 5350 .type foo, @function 5351foo: 5352 .long 0 5353 .size foo, .-foo 5354 .section .gcc_except_table.foo,"a",@progbits 5355.L0: 5356 .long 0 5357 .section .eh_frame,"a",@progbits 5358 .long .L0 5359EOF 5360 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then 5361 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \ 5362 | grep "gc-sections option ignored" > /dev/null; then 5363 gcc_cv_ld_eh_gc_sections=no 5364 elif $gcc_cv_objdump -h conftest 2> /dev/null \ 5365 | grep gcc_except_table > /dev/null; then 5366 gcc_cv_ld_eh_gc_sections=yes 5367 fi 5368 fi 5369 fi 5370 fi 5371 fi 5372 rm -f conftest.s conftest.o conftest 5373fi 5374case "$target" in 5375 hppa*-*-linux*) 5376 # ??? This apparently exposes a binutils bug with PC-relative relocations. 5377 gcc_cv_ld_eh_gc_sections=no 5378 ;; 5379esac 5380if test x$gcc_cv_ld_eh_gc_sections = xyes; then 5381 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1, 5382 [Define if your linker supports garbage collection of 5383 sections in presence of EH frames.]) 5384fi 5385AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections) 5386 5387AC_MSG_CHECKING(linker EH garbage collection of sections bug) 5388gcc_cv_ld_eh_gc_sections_bug=no 5389if test $in_tree_ld = yes ; then 5390 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \ 5391 && test $in_tree_ld_is_elf = yes; then 5392 gcc_cv_ld_eh_gc_sections_bug=yes 5393 fi 5394elif test x$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 5395 gcc_cv_ld_eh_gc_sections_bug=yes 5396 cat > conftest.s <<EOF 5397 .section .text 5398.globl _start 5399 .type _start, @function 5400_start: 5401 .long foo 5402 .size _start, .-_start 5403 .section .text.startup.foo,"ax",@progbits 5404 .type foo, @function 5405foo: 5406 .long 0 5407 .size foo, .-foo 5408 .section .gcc_except_table.foo,"a",@progbits 5409.L0: 5410 .long 0 5411 .section .eh_frame,"a",@progbits 5412 .long .L0 5413EOF 5414 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then 5415 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \ 5416 | grep "gc-sections option ignored" > /dev/null; then 5417 : 5418 elif $gcc_cv_objdump -h conftest 2> /dev/null \ 5419 | grep gcc_except_table > /dev/null; then 5420 gcc_cv_ld_eh_gc_sections_bug=no 5421 fi 5422 fi 5423 rm -f conftest.s conftest.o conftest 5424fi 5425if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then 5426 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1, 5427 [Define if your linker has buggy garbage collection of 5428 sections support when .text.startup.foo like sections are used.]) 5429fi 5430AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug) 5431 5432AC_MSG_CHECKING(linker for compressed debug sections) 5433# gold/gld support compressed debug sections since binutils 2.19/2.21 5434# In binutils 2.26, gld gained support for the ELF gABI format. 5435if test $in_tree_ld = yes ; then 5436 gcc_cv_ld_compress_debug=0 5437 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \ 5438 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then 5439 gcc_cv_ld_compress_debug=2 5440 gcc_cv_ld_compress_debug_option="--compress-debug-sections" 5441 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 26 -o "$gcc_cv_gld_major_version" -gt 2 \ 5442 && test $in_tree_ld_is_elf = yes && test $ld_is_gold = no; then 5443 gcc_cv_ld_compress_debug=3 5444 gcc_cv_ld_compress_debug_option="--compress-debug-sections" 5445 elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \ 5446 && test $in_tree_ld_is_elf = yes; then 5447 gcc_cv_ld_compress_debug=1 5448 fi 5449elif echo "$ld_ver" | grep GNU > /dev/null; then 5450 if test "$ld_vers_major" -lt 2 \ 5451 || test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then 5452 gcc_cv_ld_compress_debug=0 5453 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then 5454 gcc_cv_ld_compress_debug=1 5455 else 5456 gcc_cv_ld_compress_debug=3 5457 gcc_cv_ld_compress_debug_option="--compress-debug-sections" 5458 fi 5459 if test $ld_is_gold = yes; then 5460 gcc_cv_ld_compress_debug=2 5461 gcc_cv_ld_compress_debug_option="--compress-debug-sections" 5462 fi 5463else 5464changequote(,)dnl 5465 case "${target}" in 5466 *-*-solaris2*) 5467 # Introduced in Solaris 11.2. 5468 if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then 5469 gcc_cv_ld_compress_debug=3 5470 gcc_cv_ld_compress_debug_option="-z compress-sections" 5471 else 5472 gcc_cv_ld_compress_debug=0 5473 fi 5474 ;; 5475 *) 5476 # Assume linkers other than GNU ld don't support compessed debug 5477 # sections. 5478 gcc_cv_ld_compress_debug=0 5479 ;; 5480 esac 5481changequote([,])dnl 5482fi 5483AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug, 5484[Define to the level of your linker's compressed debug section support.]) 5485AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option", 5486[Define to the linker option to enable compressed debug sections.]) 5487AC_MSG_RESULT($gcc_cv_ld_compress_debug) 5488 5489if test x"$ld64_flag" = x"yes"; then 5490 5491 # Set defaults for possibly untestable items. 5492 gcc_cv_ld64_export_dynamic=0 5493 5494 if test "$build" = "$host"; then 5495 darwin_try_test=1 5496 else 5497 darwin_try_test=0 5498 fi 5499 5500 # On Darwin, because of FAT library support, it is often possible to execute 5501 # exes from compatible archs even when the host differs from the build system. 5502 case "$build","$host" in 5503 x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*) 5504 darwin_try_test=1;; 5505 *) ;; 5506 esac 5507 5508 # If the configurer specified a minimum ld64 version to be supported, then use 5509 # that to determine feature support. 5510 if test x"${gcc_cv_ld64_version}" != x; then 5511 AC_MSG_CHECKING(ld64 specified version) 5512 gcc_cv_ld64_major=`echo "$gcc_cv_ld64_version" | sed -e 's/\..*//'` 5513 AC_MSG_RESULT($gcc_cv_ld64_major) 5514 if test "$gcc_cv_ld64_major" -ge 236; then 5515 gcc_cv_ld64_export_dynamic=1 5516 fi 5517 elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then 5518 # If the version was not specified, try to find it. 5519 AC_MSG_CHECKING(linker version) 5520 if test x"${gcc_cv_ld64_version}" = x; then 5521 gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | grep ld64 | sed s/.*ld64-// | awk '{print $1}'` 5522 fi 5523 AC_MSG_RESULT($gcc_cv_ld64_version) 5524 5525 AC_MSG_CHECKING(linker for -export_dynamic support) 5526 gcc_cv_ld64_export_dynamic=1 5527 if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then 5528 gcc_cv_ld64_export_dynamic=0 5529 fi 5530 AC_MSG_RESULT($gcc_cv_ld64_export_dynamic) 5531 fi 5532 5533 if test x"${gcc_cv_ld64_version}" != x; then 5534 AC_DEFINE_UNQUOTED(LD64_VERSION, "${gcc_cv_ld64_version}", 5535 [Define to ld64 version.]) 5536 fi 5537 5538 AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic, 5539 [Define to 1 if ld64 supports '-export_dynamic'.]) 5540fi 5541 5542# -------- 5543# UNSORTED 5544# -------- 5545 5546AC_CACHE_CHECK(linker --as-needed support, 5547gcc_cv_ld_as_needed, 5548[gcc_cv_ld_as_needed=no 5549gcc_cv_ld_as_needed_option='--as-needed' 5550gcc_cv_ld_no_as_needed_option='--no-as-needed' 5551if test $in_tree_ld = yes ; then 5552 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \ 5553 && test $in_tree_ld_is_elf = yes; then 5554 gcc_cv_ld_as_needed=yes 5555 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 28; then 5556 gcc_cv_ld_as_needed_option='--push-state --as-needed' 5557 gcc_cv_ld_no_as_needed_option='--pop-state' 5558 fi 5559 fi 5560elif test x$gcc_cv_ld != x; then 5561 # Check if linker supports --as-needed and --no-as-needed options 5562 if $gcc_cv_ld --help 2>&1 | grep as-needed > /dev/null; then 5563 gcc_cv_ld_as_needed=yes 5564 if $gcc_cv_ld --help 2>&1 | grep push-state > /dev/null \ 5565 && $gcc_cv_ld --help 2>&1 | grep pop-state > /dev/null \ 5566 && echo "$ld_ver" | grep GNU > /dev/null \ 5567 && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 28; then 5568 # Use these options only when both ld.bfd and ld.gold support 5569 # --push-state/--pop-state, which unfortunately wasn't added 5570 # at the same time. 5571 gcc_cv_ld_as_needed_option='--push-state --as-needed' 5572 gcc_cv_ld_no_as_needed_option='--pop-state' 5573 fi 5574 fi 5575 case "$target:$gnu_ld" in 5576 *-*-solaris2*:no) 5577 # Solaris 2 ld always supports -z ignore/-z record. Prefer the native 5578 # forms. 5579 gcc_cv_ld_as_needed=yes 5580 gcc_cv_ld_as_needed_option="-z ignore" 5581 gcc_cv_ld_no_as_needed_option="-z record" 5582 ;; 5583 esac 5584fi 5585# --as-needed/-z ignore can only be used if libgcc_s.so.1 uses 5586# dl_iterate_phdr, i.e. since Solaris 11. 5587case "$target" in 5588 *-*-solaris2.1[[1-9]]*) 5589 case "$target" in 5590 i?86-*-* | x86_64-*-*) 5591 if echo "$ld_ver" | grep GNU > /dev/null; then 5592 # Doesn't work with gld on Solaris/x86 due to PR ld/12320. 5593 gcc_cv_ld_as_needed=no 5594 fi 5595 ;; 5596 esac 5597 ;; 5598 *-*-solaris2*) 5599 gcc_cv_ld_as_needed=no 5600 ;; 5601esac 5602]) 5603if test x"$gcc_cv_ld_as_needed" = xyes; then 5604 AC_DEFINE(HAVE_LD_AS_NEEDED, 1, 5605[Define if your linker supports --as-needed/--no-as-needed or equivalent options.]) 5606 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option", 5607[Define to the linker option to ignore unused dependencies.]) 5608 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option", 5609[Define to the linker option to keep unused dependencies.]) 5610fi 5611 5612AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities) 5613saved_LDFLAGS="$LDFLAGS" 5614for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do 5615 LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map" 5616 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])], 5617 [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no]) 5618done 5619LDFLAGS="$saved_LDFLAGS" 5620if test "x$gcc_cv_ld_clearcap" = xyes; then 5621 AC_DEFINE([HAVE_LD_CLEARCAP], 1, 5622[Define if the linker supports clearing hardware capabilities via mapfile.]) 5623 AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map]) 5624fi 5625AC_MSG_RESULT($gcc_cv_ld_clearcap) 5626 5627case "$target" in 5628 powerpc*-*-*) 5629 case "$target" in 5630 *le-*-linux*) 5631 emul_name="-melf32lppc" 5632 ;; 5633 *) 5634 emul_name="-melf32ppc" 5635 ;; 5636 esac 5637 AC_CACHE_CHECK(linker .gnu.attributes long double support, 5638 gcc_cv_ld_ppc_attr, 5639 [gcc_cv_ld_ppc_attr=no 5640 if test x"$ld_is_gold" = xyes; then 5641 gcc_cv_ld_ppc_attr=yes 5642 elif test $in_tree_ld = yes ; then 5643 if test "$gcc_cv_gld_major_version" -eq 2 \ 5644 -a "$gcc_cv_gld_minor_version" -ge 28 \ 5645 -o "$gcc_cv_gld_major_version" -gt 2; then 5646 gcc_cv_ld_ppc_attr=yes 5647 fi 5648 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then 5649 # check that merging the long double .gnu_attribute doesn't warn 5650 cat > conftest1.s <<EOF 5651 .gnu_attribute 4,1 5652EOF 5653 cat > conftest2.s <<EOF 5654 .gnu_attribute 4,9 5655EOF 5656 if $gcc_cv_as -a32 -o conftest1.o conftest1.s > /dev/null 2>&1 \ 5657 && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \ 5658 && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \ 5659 && test ! -s conftest.err; then 5660 gcc_cv_ld_ppc_attr=yes 5661 fi 5662 rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s 5663 fi 5664 ]) 5665 if test x$gcc_cv_ld_ppc_attr = xyes; then 5666 AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1, 5667 [Define if your PowerPC linker has .gnu.attributes long double support.]) 5668 fi 5669 ;; 5670esac 5671 5672case "$target:$tm_file" in 5673 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*) 5674 case "$target" in 5675 *le-*-linux*) 5676 emul_name="-melf64lppc" 5677 ;; 5678 *-*-linux*) 5679 emul_name="-melf64ppc" 5680 ;; 5681 *-*-freebsd*) 5682 emul_name="-melf64ppc_fbsd" 5683 ;; 5684 esac 5685 AC_CACHE_CHECK(linker support for omitting dot symbols, 5686 gcc_cv_ld_no_dot_syms, 5687 [gcc_cv_ld_no_dot_syms=no 5688 if test x"$ld_is_gold" = xyes; then 5689 gcc_cv_ld_no_dot_syms=yes 5690 elif test $in_tree_ld = yes ; then 5691 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then 5692 gcc_cv_ld_no_dot_syms=yes 5693 fi 5694 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then 5695 cat > conftest1.s <<EOF 5696 .text 5697 bl .foo 5698EOF 5699 cat > conftest2.s <<EOF 5700 .section ".opd","aw" 5701 .align 3 5702 .globl foo 5703 .type foo,@function 5704foo: 5705 .quad .LEfoo,.TOC.@tocbase,0 5706 .text 5707.LEfoo: 5708 blr 5709 .size foo,.-.LEfoo 5710EOF 5711 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \ 5712 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \ 5713 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then 5714 gcc_cv_ld_no_dot_syms=yes 5715 fi 5716 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s 5717 fi 5718 ]) 5719 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then 5720 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1, 5721 [Define if your PowerPC64 linker only needs function descriptor syms.]) 5722 fi 5723 5724 AC_CACHE_CHECK(linker large toc support, 5725 gcc_cv_ld_large_toc, 5726 [gcc_cv_ld_large_toc=no 5727 if test x"$ld_is_gold" = xyes; then 5728 gcc_cv_ld_large_toc=yes 5729 elif test $in_tree_ld = yes ; then 5730 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then 5731 gcc_cv_ld_large_toc=yes 5732 fi 5733 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then 5734 cat > conftest.s <<EOF 5735 .section ".tbss","awT",@nobits 5736 .align 3 5737ie0: .space 8 5738 .global _start 5739 .text 5740_start: 5741 addis 9,13,ie0@got@tprel@ha 5742 ld 9,ie0@got@tprel@l(9) 5743EOF 5744 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \ 5745 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then 5746 gcc_cv_ld_large_toc=yes 5747 fi 5748 rm -f conftest conftest.o conftest.s 5749 fi 5750 ]) 5751 if test x"$gcc_cv_ld_large_toc" = xyes; then 5752 AC_DEFINE(HAVE_LD_LARGE_TOC, 1, 5753 [Define if your PowerPC64 linker supports a large TOC.]) 5754 fi 5755 5756 AC_CACHE_CHECK(linker toc pointer alignment, 5757 gcc_cv_ld_toc_align, 5758 [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then 5759 cat > conftest.s <<EOF 5760 .global _start 5761 .text 5762_start: 5763 addis 9,2,x@got@ha 5764 .section .data.rel.ro,"aw",@progbits 5765 .p2align 16 5766 .space 32768 5767x: .quad .TOC. 5768EOF 5769 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \ 5770 && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then 5771 gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'` 5772 fi 5773 rm -f conftest conftest.o conftest.s 5774 fi 5775 ]) 5776 if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then 5777 AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align, 5778 [Define to .TOC. alignment forced by your linker.]) 5779 fi 5780 ;; 5781esac 5782 5783case "$target" in 5784 *-*-aix*) 5785 AC_CACHE_CHECK(linker large toc support, 5786 gcc_cv_ld_large_toc, 5787 [gcc_cv_ld_large_toc=no 5788 if test x$gcc_cv_as != x ; then 5789 cat > conftest.s <<EOF 5790 .toc 5791LC..1: 5792 .tc a[[TC]],a[[RW]] 5793 .extern a[[RW]] 5794 .csect .text[[PR]] 5795.largetoctest: 5796 addis 9,LC..1@u(2) 5797 ld 3,LC..1@l(9) 5798EOF 5799 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then 5800 gcc_cv_ld_large_toc=yes 5801 fi 5802 rm -f conftest conftest.o conftest.s 5803 fi 5804 ]) 5805 if test x"$gcc_cv_ld_large_toc" = xyes; then 5806 AC_DEFINE(HAVE_LD_LARGE_TOC, 1, 5807 [Define if your PowerPC64 linker supports a large TOC.]) 5808 fi 5809 ;; 5810esac 5811 5812AC_CACHE_CHECK(linker --build-id support, 5813 gcc_cv_ld_buildid, 5814 [gcc_cv_ld_buildid=no 5815 if test $in_tree_ld = yes ; then 5816 if test "$gcc_cv_gld_major_version" -eq 2 -a \ 5817 "$gcc_cv_gld_minor_version" -ge 18 -o \ 5818 "$gcc_cv_gld_major_version" -gt 2 \ 5819 && test $in_tree_ld_is_elf = yes; then 5820 gcc_cv_ld_buildid=yes 5821 fi 5822 elif test x$gcc_cv_ld != x; then 5823 if $gcc_cv_ld --help 2>&1 | grep build-id > /dev/null; then 5824 gcc_cv_ld_buildid=yes 5825 fi 5826 fi]) 5827if test x"$gcc_cv_ld_buildid" = xyes; then 5828 AC_DEFINE(HAVE_LD_BUILDID, 1, 5829 [Define if your linker supports --build-id.]) 5830fi 5831 5832AC_ARG_ENABLE(linker-build-id, 5833[AS_HELP_STRING([--enable-linker-build-id], 5834 [compiler will always pass --build-id to linker])], 5835[], 5836enable_linker_build_id=no) 5837 5838if test x"$enable_linker_build_id" = xyes; then 5839 if test x"$gcc_cv_ld_buildid" = xyes; then 5840 AC_DEFINE(ENABLE_LD_BUILDID, 1, 5841 [Define if gcc should always pass --build-id to linker.]) 5842 else 5843 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored) 5844 fi 5845fi 5846 5847# In binutils 2.21, GNU ld gained support for new emulations fully 5848# supporting the Solaris 2 ABI. Detect their presence in the linker used. 5849AC_CACHE_CHECK(linker *_sol2 emulation support, 5850 gcc_cv_ld_sol2_emulation, 5851 [gcc_cv_ld_sol2_emulation=no 5852 if test $in_tree_ld = yes ; then 5853 if test "$gcc_cv_gld_major_version" -eq 2 -a \ 5854 "$gcc_cv_gld_minor_version" -ge 21 -o \ 5855 "$gcc_cv_gld_major_version" -gt 2 \ 5856 && test $in_tree_ld_is_elf = yes; then 5857 gcc_cv_ld_sol2_emulation=yes 5858 fi 5859 elif test x$gcc_cv_ld != x; then 5860 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \ 5861 grep _sol2 > /dev/null; then 5862 gcc_cv_ld_sol2_emulation=yes 5863 fi 5864 fi]) 5865if test x"$gcc_cv_ld_sol2_emulation" = xyes; then 5866 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1, 5867 [Define if your linker supports the *_sol2 emulations.]) 5868fi 5869 5870AC_CACHE_CHECK(linker --sysroot support, 5871 gcc_cv_ld_sysroot, 5872 [gcc_cv_ld_sysroot=no 5873 if test $in_tree_ld = yes ; then 5874 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then 5875 gcc_cv_ld_sysroot=yes 5876 fi 5877 elif test x$gcc_cv_ld != x; then 5878 if $gcc_cv_ld --help 2>&1 | grep sysroot > /dev/null; then 5879 gcc_cv_ld_sysroot=yes 5880 fi 5881 fi]) 5882if test x"$gcc_cv_ld_sysroot" = xyes; then 5883 AC_DEFINE(HAVE_LD_SYSROOT, 1, 5884 [Define if your linker supports --sysroot.]) 5885fi 5886 5887case $target in 5888*-*-solaris2*) 5889 # Check for system-provided CRTs on Solaris 11.x and Solaris 12. 5890 AC_CACHE_CHECK([system-provided CRTs on Solaris], 5891 gcc_cv_solaris_crts, 5892 [gcc_cv_solaris_crts=no 5893 if test x$host != x$target; then 5894 if test "x$with_sysroot" = xyes; then 5895 target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root" 5896 else 5897 target_sysroot="${with_sysroot}" 5898 fi 5899 fi 5900 target_libdir="$target_sysroot/usr/lib" 5901 # At the time they were added, gcrt1.o became a symlink for backwards 5902 # compatibility on x86, while crt1.o was added on sparc, so check for that. 5903 case $target in 5904 i?86-*-solaris2* | x86_64-*-solaris2*) 5905 if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi 5906 ;; 5907 sparc*-*-solaris2*) 5908 if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi 5909 ;; 5910 esac]) 5911 ;; 5912esac 5913if test x$gcc_cv_solaris_crts = xyes; then 5914 AC_DEFINE(HAVE_SOLARIS_CRTS, 1, 5915 [Define if the system-provided CRTs are present on Solaris.]) 5916fi 5917 5918AC_ARG_ENABLE(libssp, 5919[AS_HELP_STRING([--enable-libssp], [enable linking against libssp])], 5920[case "${enableval}" in 5921 yes|no) 5922 ;; 5923 *) 5924 AC_MSG_ERROR([unknown libssp setting $enableval]) 5925 ;; 5926esac], []) 5927 5928# Test for stack protector support in target C library. 5929AC_CACHE_CHECK(__stack_chk_fail in target C library, 5930 gcc_cv_libc_provides_ssp, 5931 [gcc_cv_libc_provides_ssp=no 5932 if test "x$enable_libssp" = "xno"; then 5933 gcc_cv_libc_provides_ssp=yes 5934 elif test "x$enable_libssp" = "xyes"; then 5935 gcc_cv_libc_provides_ssp=no 5936 else 5937 case "$target" in 5938 *-*-musl*) 5939 # All versions of musl provide stack protector 5940 gcc_cv_libc_provides_ssp=yes;; 5941 *-*-linux* | *-*-kfreebsd*-gnu) 5942 # glibc 2.4 and later provides __stack_chk_fail and 5943 # either __stack_chk_guard, or TLS access to stack guard canary. 5944 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [ 5945 [if test -f $target_header_dir/features.h \ 5946 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \ 5947 $target_header_dir/features.h > /dev/null; then 5948 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \ 5949 $target_header_dir/features.h > /dev/null && \ 5950 test -f $target_header_dir/bits/uClibc_config.h && \ 5951 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \ 5952 $target_header_dir/bits/uClibc_config.h > /dev/null; then 5953 gcc_cv_libc_provides_ssp=yes 5954 fi 5955 # all versions of Bionic support stack protector 5956 elif test -f $target_header_dir/sys/cdefs.h \ 5957 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \ 5958 $target_header_dir/sys/cdefs.h > /dev/null; then 5959 gcc_cv_libc_provides_ssp=yes 5960 fi]]) 5961 ;; 5962 *-*-gnu*) 5963 # Avoid complicated tests (see 5964 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now 5965 # simply assert that glibc does provide this, which is true for all 5966 # realistically usable GNU/Hurd configurations. 5967 # All supported versions of musl provide it as well 5968 gcc_cv_libc_provides_ssp=yes;; 5969 *-*-darwin* | *-*-freebsd* | *-*-netbsd*) 5970 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes], 5971 [echo "no __stack_chk_fail on this target"]) 5972 ;; 5973 *) gcc_cv_libc_provides_ssp=no ;; 5974 esac 5975 fi]) 5976 5977if test x$gcc_cv_libc_provides_ssp = xyes; then 5978 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1, 5979 [Define if your target C library provides stack protector support]) 5980fi 5981 5982# Check whether --enable-default-ssp was given. 5983AC_ARG_ENABLE(default-ssp, 5984[AS_HELP_STRING([--enable-default-ssp], 5985 [enable Stack Smashing Protection as default])],[ 5986if test x$gcc_cv_libc_provides_ssp = xyes; then 5987 case "$target" in 5988 ia64*-*-*) enable_default_ssp=no ;; 5989 *) enable_default_ssp=$enableval ;; 5990 esac 5991else 5992 enable_default_ssp=no 5993fi], 5994enable_default_ssp=no) 5995if test x$enable_default_ssp = xyes ; then 5996 AC_DEFINE(ENABLE_DEFAULT_SSP, 1, 5997 [Define if your target supports default stack protector and it is enabled.]) 5998fi 5999AC_SUBST([enable_default_ssp]) 6000 6001# Test for <sys/sdt.h> on the target. 6002GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H]) 6003AC_MSG_CHECKING(sys/sdt.h in the target C library) 6004have_sys_sdt_h=no 6005if test -f $target_header_dir/sys/sdt.h; then 6006 have_sys_sdt_h=yes 6007 AC_DEFINE(HAVE_SYS_SDT_H, 1, 6008 [Define if your target C library provides sys/sdt.h]) 6009fi 6010AC_MSG_RESULT($have_sys_sdt_h) 6011 6012# Check if TFmode long double should be used by default or not. 6013# Some glibc targets used DFmode long double, but with glibc 2.4 6014# and later they can use TFmode. 6015case "$target" in 6016 powerpc*-*-linux* | \ 6017 sparc*-*-linux* | \ 6018 s390*-*-linux* | \ 6019 alpha*-*-linux*) 6020 AC_ARG_WITH(long-double-128, 6021 [AS_HELP_STRING([--with-long-double-128], 6022 [use 128-bit long double by default])], 6023 gcc_cv_target_ldbl128="$with_long_double_128", 6024 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [ 6025 [gcc_cv_target_ldbl128=no 6026 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \ 6027 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \ 6028 && gcc_cv_target_ldbl128=yes 6029 ]])]) 6030 ;; 6031esac 6032if test x$gcc_cv_target_ldbl128 = xyes; then 6033 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1, 6034 [Define if TFmode long double should be the default]) 6035fi 6036 6037# Check if TFmode long double target should use the IBM extended double or IEEE 6038# 128-bit floating point formats if long doubles are 128-bits long. The long 6039# double type can only be switched on powerpc64 bit Linux systems where VSX is 6040# supported. Other PowerPC systems do not build the IEEE 128-bit emulator in 6041# libgcc. 6042AC_ARG_WITH([long-double-format], 6043 [AS_HELP_STRING([--with-long-double-format={ieee,ibm}] 6044 [Specify whether PowerPC long double uses IEEE or IBM format])],[ 6045case "$target:$with_long_double_format" in 6046 powerpc64le-*-linux*:ieee | powerpc64le-*-linux*:ibm) 6047 : 6048 ;; 6049 powerpc64-*-linux*:ieee | powerpc64-*-linux*:ibm) 6050 # IEEE 128-bit emulation is only built on 64-bit VSX Linux systems 6051 case "$with_cpu" in 6052 power7 | power8 | power9 | power1*) 6053 : 6054 ;; 6055 *) 6056 AC_MSG_ERROR([Configuration option --with-long-double-format is only \ 6057supported if the default cpu is power7 or newer]) 6058 with_long_double_format="" 6059 ;; 6060 esac 6061 ;; 6062 xpowerpc64*-*-linux*:*) 6063 AC_MSG_ERROR([--with-long-double-format argument should be ibm or ieee]) 6064 with_long_double_format="" 6065 ;; 6066 *) 6067 AC_MSG_ERROR([Configure option --with-long-double-format is only supported \ 6068on 64-bit PowerPC VSX Linux systems]) 6069 with_long_double_format="" 6070 ;; 6071esac], 6072 []) 6073 6074# Check if the target LIBC supports exporting the AT_PLATFORM and AT_HWCAP 6075# values in the TCB. Currently, only GLIBC 2.23 and later support this. 6076gcc_cv_libc_provides_hwcap_in_tcb=no 6077case "$target" in 6078 powerpc*-*-linux*) 6079 GCC_GLIBC_VERSION_GTE_IFELSE([2], [23], [gcc_cv_libc_provides_hwcap_in_tcb=yes], ) 6080 ;; 6081esac 6082if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then 6083 AC_DEFINE(TARGET_LIBC_PROVIDES_HWCAP_IN_TCB, 1, 6084 [Define if your target C Library provides the AT_HWCAP value in the TCB]) 6085fi 6086 6087AC_MSG_CHECKING(dl_iterate_phdr in target C library) 6088gcc_cv_target_dl_iterate_phdr=unknown 6089case "$target" in 6090 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes 6091 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in 6092 # libdl there, both complicating its use and breaking compatibility 6093 # between Solaris 10 updates. 6094 *-*-solaris2.1[[1-9]]*) 6095 # <link.h> needs both a dl_iterate_phdr declaration and support for 6096 # compilation with largefile support. 6097 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \ 6098 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then 6099 gcc_cv_target_dl_iterate_phdr=yes 6100 else 6101 gcc_cv_target_dl_iterate_phdr=no 6102 fi 6103 ;; 6104 *-*-dragonfly* | *-*-freebsd*) 6105 if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then 6106 gcc_cv_target_dl_iterate_phdr=yes 6107 else 6108 gcc_cv_target_dl_iterate_phdr=no 6109 fi 6110 ;; 6111 *-linux-musl*) 6112 gcc_cv_target_dl_iterate_phdr=yes 6113 ;; 6114esac 6115GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR]) 6116if test x$gcc_cv_target_dl_iterate_phdr = xyes; then 6117 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1, 6118[Define if your target C library provides the `dl_iterate_phdr' function.]) 6119fi 6120AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr) 6121 6122# We no longer support different GC mechanisms. Emit an error if 6123# the user configures with --with-gc. 6124AC_ARG_WITH(gc, 6125[AS_HELP_STRING([--with-gc={page,zone}], 6126 [this option is not supported anymore. It used to choose 6127 the garbage collection mechanism to use with the compiler])], 6128[AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])], 6129[]) 6130 6131# Libraries to use on the host. This will normally be set by the top 6132# level Makefile. Here we simply capture the value for our Makefile. 6133if test -z "${HOST_LIBS+set}"; then 6134 HOST_LIBS= 6135fi 6136AC_SUBST(HOST_LIBS) 6137 6138# Use the system's zlib library. 6139AM_ZLIB 6140 6141dnl Very limited version of automake's enable-maintainer-mode 6142 6143AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles]) 6144 dnl maintainer-mode is disabled by default 6145 AC_ARG_ENABLE(maintainer-mode, 6146[AS_HELP_STRING([--enable-maintainer-mode], 6147 [enable make rules and dependencies not useful 6148 (and sometimes confusing) to the casual installer])], 6149 maintainer_mode=$enableval, 6150 maintainer_mode=no) 6151 6152AC_MSG_RESULT($maintainer_mode) 6153 6154if test "$maintainer_mode" = "yes"; then 6155 MAINT='' 6156else 6157 MAINT='#' 6158fi 6159AC_SUBST(MAINT)dnl 6160 6161dnl Whether to prevent multiple front-ends from linking at the same time 6162 6163AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once]) 6164 AC_ARG_ENABLE(link-mutex, 6165[AS_HELP_STRING([--enable-link-mutex], 6166 [avoid linking multiple front-ends at once to avoid thrashing 6167 on the build machine])], 6168 do_link_mutex=$enableval, 6169 do_link_mutex=no) 6170AC_MSG_RESULT($do_link_mutex) 6171 6172if test "$do_link_mutex" = "yes"; then 6173 DO_LINK_MUTEX=true 6174else 6175 DO_LINK_MUTEX=false 6176fi 6177AC_SUBST(DO_LINK_MUTEX) 6178 6179# -------------- 6180# Language hooks 6181# -------------- 6182 6183# Make empty files to contain the specs and options for each language. 6184# Then add #include lines to for a compiler that has specs and/or options. 6185 6186subdirs= 6187lang_opt_files= 6188lang_specs_files= 6189lang_tree_files= 6190# These (without "all_") are set in each config-lang.in. 6191# `language' must be a single word so is spelled singularly. 6192all_languages= 6193all_compilers= 6194all_outputs='Makefile' 6195# List of language makefile fragments. 6196all_lang_makefrags= 6197# Additional files for gengtype 6198all_gtfiles="$target_gtfiles" 6199 6200# These are the languages that are set in --enable-languages, 6201# and are available in the GCC tree. 6202all_selected_languages= 6203 6204# Add the language fragments. 6205# Languages are added via two mechanisms. Some information must be 6206# recorded in makefile variables, these are defined in config-lang.in. 6207# We accumulate them and plug them into the main Makefile. 6208# The other mechanism is a set of hooks for each of the main targets 6209# like `clean', `install', etc. 6210 6211language_hooks="Make-hooks" 6212 6213for lang in ${srcdir}/*/config-lang.in 6214do 6215changequote(,)dnl 6216 test "$lang" = "${srcdir}/*/config-lang.in" && continue 6217 6218 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang` 6219 if test "x$lang_alias" = x 6220 then 6221 echo "$lang doesn't set \$language." 1>&2 6222 exit 1 6223 fi 6224 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`" 6225 subdirs="$subdirs $subdir" 6226 6227 # $gcc_subdir is where the gcc integration files are to be found 6228 # for a language, both for internal compiler purposes (compiler 6229 # sources implementing front-end to GCC tree converters), and for 6230 # build infrastructure purposes (Make-lang.in, etc.) 6231 # 6232 # This will be <subdir> (relative to $srcdir) if a line like 6233 # gcc_subdir="<subdir>" or gcc_subdir=<subdir> 6234 # is found in <langdir>/config-lang.in, and will remain <langdir> 6235 # otherwise. 6236 # 6237 # Except for the language alias (fetched above), the regular 6238 # "config-lang.in" contents are always retrieved from $gcc_subdir, 6239 # so a <langdir>/config-lang.in setting gcc_subdir typically sets 6240 # only this and the language alias. 6241 6242 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang` 6243 if [ "$gcc_subdir" = "" ]; then 6244 gcc_subdir="$subdir" 6245 fi 6246 6247 case ",$enable_languages," in 6248 *,$lang_alias,*) 6249 all_selected_languages="$all_selected_languages $lang_alias" 6250 if test -f $srcdir/$gcc_subdir/lang-specs.h; then 6251 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h" 6252 fi 6253 ;; 6254 esac 6255changequote([,])dnl 6256 6257 language= 6258 boot_language= 6259 compilers= 6260 outputs= 6261 gtfiles= 6262 subdir_requires= 6263 . ${srcdir}/$gcc_subdir/config-lang.in 6264 if test "x$language" = x 6265 then 6266 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2 6267 exit 1 6268 fi 6269 6270 ok=: 6271 case ",$enable_languages," in 6272 *,$lang_alias,*) ;; 6273 *) 6274 for i in $subdir_requires; do 6275 test -f "${srcdir}/$i/config-lang.in" && continue 6276 ok=false 6277 break 6278 done 6279 ;; 6280 esac 6281 $ok || continue 6282 6283 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in" 6284 if test -f $srcdir/$gcc_subdir/lang.opt; then 6285 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt" 6286 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt" 6287 fi 6288 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then 6289 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def" 6290 fi 6291 all_languages="$all_languages $language" 6292 all_compilers="$all_compilers $compilers" 6293 all_outputs="$all_outputs $outputs" 6294 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles" 6295 case ",$enable_languages," in 6296 *,lto,*) 6297 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.]) 6298 enable_lto=yes 6299 AC_SUBST(enable_lto) 6300 ;; 6301 *) ;; 6302 esac 6303done 6304 6305check_languages= 6306for language in $all_selected_languages 6307do 6308 check_languages="$check_languages check-$language" 6309done 6310 6311selftest_languages= 6312for language in $all_selected_languages 6313do 6314 selftest_languages="$selftest_languages selftest-$language" 6315done 6316 6317# We link each language in with a set of hooks, reached indirectly via 6318# lang.${target}. Only do so for selected languages. 6319 6320rm -f Make-hooks 6321touch Make-hooks 6322target_list="all.cross start.encap rest.encap tags \ 6323 install-common install-man install-info install-pdf install-html dvi \ 6324 pdf html uninstall info man srcextra srcman srcinfo \ 6325 mostlyclean clean distclean maintainer-clean install-plugin" 6326 6327for t in $target_list 6328do 6329 x= 6330 for lang in $all_selected_languages 6331 do 6332 x="$x $lang.$t" 6333 done 6334 echo "lang.$t: $x" >> Make-hooks 6335done 6336 6337# -------- 6338# Option include files 6339# -------- 6340 6341${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk 6342option_includes="option-includes.mk" 6343AC_SUBST_FILE(option_includes) 6344 6345# -------- 6346# UNSORTED 6347# -------- 6348 6349# Create .gdbinit. 6350 6351echo "dir ." > .gdbinit 6352echo "dir ${srcdir}" >> .gdbinit 6353if test x$gdb_needs_out_file_path = xyes 6354then 6355 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit 6356fi 6357if test "x$subdirs" != x; then 6358 for s in $subdirs 6359 do 6360 echo "dir ${srcdir}/$s" >> .gdbinit 6361 done 6362fi 6363echo "source ${srcdir}/gdbinit.in" >> .gdbinit 6364echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit 6365 6366# Put a breakpoint on __asan_report_error to help with debugging buffer 6367# overflow. 6368case "$CFLAGS" in 6369*-fsanitize=address*) 6370 echo "source ${srcdir}/gdbasan.in" >> .gdbinit 6371 ;; 6372esac 6373 6374gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)' 6375AC_SUBST(gcc_tooldir) 6376AC_SUBST(dollar) 6377 6378# Find a directory in which to install a shared libgcc. 6379 6380AC_ARG_ENABLE(version-specific-runtime-libs, 6381[AS_HELP_STRING([--enable-version-specific-runtime-libs], 6382 [specify that runtime libraries should be 6383 installed in a compiler-specific directory])]) 6384 6385# Substitute configuration variables 6386AC_SUBST(subdirs) 6387AC_SUBST(srcdir) 6388AC_SUBST(all_compilers) 6389AC_SUBST(all_gtfiles) 6390AC_SUBST(all_lang_makefrags) 6391AC_SUBST(all_languages) 6392AC_SUBST(all_selected_languages) 6393AC_SUBST(build_exeext) 6394AC_SUBST(build_install_headers_dir) 6395AC_SUBST(build_xm_file_list) 6396AC_SUBST(build_xm_include_list) 6397AC_SUBST(build_xm_defines) 6398AC_SUBST(build_file_translate) 6399AC_SUBST(check_languages) 6400AC_SUBST(selftest_languages) 6401AC_SUBST(cpp_install_dir) 6402AC_SUBST(xmake_file) 6403AC_SUBST(tmake_file) 6404AC_SUBST(TM_ENDIAN_CONFIG) 6405AC_SUBST(TM_MULTILIB_CONFIG) 6406AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG) 6407AC_SUBST(extra_gcc_objs) 6408AC_SUBST(user_headers_inc_next_pre) 6409AC_SUBST(user_headers_inc_next_post) 6410AC_SUBST(extra_headers_list) 6411AC_SUBST(extra_objs) 6412AC_SUBST(extra_programs) 6413AC_SUBST(float_h_file) 6414AC_SUBST(gcc_config_arguments) 6415AC_SUBST(gcc_gxx_include_dir) 6416AC_SUBST(gcc_gxx_include_dir_add_sysroot) 6417AC_SUBST(host_exeext) 6418AC_SUBST(host_xm_file_list) 6419AC_SUBST(host_xm_include_list) 6420AC_SUBST(host_xm_defines) 6421AC_SUBST(out_host_hook_obj) 6422AC_SUBST(install) 6423AC_SUBST(lang_opt_files) 6424AC_SUBST(lang_specs_files) 6425AC_SUBST(lang_tree_files) 6426AC_SUBST(local_prefix) 6427AC_SUBST(md_file) 6428AC_SUBST(objc_boehm_gc) 6429AC_SUBST(out_file) 6430AC_SUBST(out_object_file) 6431AC_SUBST(common_out_file) 6432AC_SUBST(common_out_object_file) 6433AC_SUBST(tm_file_list) 6434AC_SUBST(tm_include_list) 6435AC_SUBST(tm_defines) 6436AC_SUBST(tm_p_file_list) 6437AC_SUBST(tm_p_include_list) 6438AC_SUBST(tm_d_file_list) 6439AC_SUBST(tm_d_include_list) 6440AC_SUBST(xm_file_list) 6441AC_SUBST(xm_include_list) 6442AC_SUBST(xm_defines) 6443AC_SUBST(use_gcc_stdint) 6444AC_SUBST(c_target_objs) 6445AC_SUBST(cxx_target_objs) 6446AC_SUBST(fortran_target_objs) 6447AC_SUBST(d_target_objs) 6448AC_SUBST(target_cpu_default) 6449 6450AC_SUBST_FILE(language_hooks) 6451 6452# Echo link setup. 6453if test x${build} = x${host} ; then 6454 if test x${host} = x${target} ; then 6455 echo "Links are now set up to build a native compiler for ${target}." 1>&2 6456 else 6457 echo "Links are now set up to build a cross-compiler" 1>&2 6458 echo " from ${host} to ${target}." 1>&2 6459 fi 6460else 6461 if test x${host} = x${target} ; then 6462 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2 6463 echo " for ${target}." 1>&2 6464 else 6465 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2 6466 echo " from ${host} to ${target}." 1>&2 6467 fi 6468fi 6469 6470AC_ARG_VAR(GMPLIBS,[How to link GMP]) 6471AC_ARG_VAR(GMPINC,[How to find GMP include files]) 6472 6473AC_ARG_VAR(ISLLIBS,[How to link isl]) 6474AC_ARG_VAR(ISLINC,[How to find isl include files]) 6475if test "x${ISLLIBS}" != "x" ; then 6476 AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.]) 6477fi 6478 6479GCC_ENABLE_PLUGINS 6480AC_SUBST(pluginlibs) 6481AC_SUBST(enable_plugin) 6482if test x"$enable_plugin" = x"yes"; then 6483 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.]) 6484fi 6485 6486 6487# Enable --enable-host-shared 6488AC_ARG_ENABLE(host-shared, 6489[AS_HELP_STRING([--enable-host-shared], 6490 [build host code as shared libraries])], 6491[PICFLAG=-fPIC], [PICFLAG=]) 6492AC_SUBST(enable_host_shared) 6493AC_SUBST(PICFLAG) 6494 6495 6496AC_ARG_ENABLE(libquadmath-support, 6497[AS_HELP_STRING([--disable-libquadmath-support], 6498 [disable libquadmath support for Fortran])], 6499ENABLE_LIBQUADMATH_SUPPORT=$enableval, 6500ENABLE_LIBQUADMATH_SUPPORT=yes) 6501if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then 6502 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1, 6503 [Define to 1 to enable libquadmath support]) 6504fi 6505 6506 6507# Specify what hash style to use by default. 6508AC_ARG_WITH([linker-hash-style], 6509[AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}], 6510 [specify the linker hash style])], 6511[case x"$withval" in 6512 xsysv) 6513 LINKER_HASH_STYLE=sysv 6514 ;; 6515 xgnu) 6516 LINKER_HASH_STYLE=gnu 6517 ;; 6518 xboth) 6519 LINKER_HASH_STYLE=both 6520 ;; 6521 *) 6522 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style]) 6523 ;; 6524 esac], 6525[LINKER_HASH_STYLE='']) 6526if test x"${LINKER_HASH_STYLE}" != x; then 6527 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE", 6528 [The linker hash style]) 6529fi 6530 6531# Specify what should be the default of -fdiagnostics-color option. 6532AC_ARG_WITH([diagnostics-color], 6533[AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}], 6534 [specify the default of -fdiagnostics-color option 6535 auto-if-env stands for -fdiagnostics-color=auto if 6536 GCC_COLOR environment variable is present and 6537 -fdiagnostics-color=never otherwise])], 6538[case x"$withval" in 6539 xnever) 6540 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO 6541 ;; 6542 xauto) 6543 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO 6544 ;; 6545 xauto-if-env) 6546 DIAGNOSTICS_COLOR_DEFAULT=-1 6547 ;; 6548 xalways) 6549 DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES 6550 ;; 6551 *) 6552 AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color]) 6553 ;; 6554 esac], 6555[DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO]) 6556AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT, 6557 [The default for -fdiagnostics-color option]) 6558 6559# Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit 6560# of jit/jit-playback.c. 6561gcc_driver_version=`eval "${get_gcc_base_ver} $srcdir/BASE-VER"` 6562echo "gcc_driver_version: ${gcc_driver_version}" 6563cat > gcc-driver-name.h <<EOF 6564#define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_driver_version}${exeext}" 6565EOF 6566 6567# Check whether --enable-default-pie was given. 6568AC_ARG_ENABLE(default-pie, 6569[AS_HELP_STRING([--enable-default-pie], 6570 [enable Position Independent Executable as default])], 6571enable_default_pie=$enableval, 6572enable_default_pie=no) 6573if test x$enable_default_pie = xyes ; then 6574 AC_DEFINE(ENABLE_DEFAULT_PIE, 1, 6575 [Define if your target supports default PIE and it is enabled.]) 6576fi 6577AC_SUBST([enable_default_pie]) 6578 6579# Check if -fno-PIE works. 6580AC_CACHE_CHECK([for -fno-PIE option], 6581 [gcc_cv_c_no_fpie], 6582 [saved_CXXFLAGS="$CXXFLAGS" 6583 CXXFLAGS="$CXXFLAGS -fno-PIE" 6584 AC_COMPILE_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])], 6585 [gcc_cv_c_no_fpie=yes], 6586 [gcc_cv_c_no_fpie=no]) 6587 CXXFLAGS="$saved_CXXFLAGS"]) 6588if test "$gcc_cv_c_no_fpie" = "yes"; then 6589 NO_PIE_CFLAGS="-fno-PIE" 6590fi 6591AC_SUBST([NO_PIE_CFLAGS]) 6592 6593# Check if -no-pie works. 6594AC_CACHE_CHECK([for -no-pie option], 6595 [gcc_cv_no_pie], 6596 [saved_LDFLAGS="$LDFLAGS" 6597 LDFLAGS="$LDFLAGS -no-pie" 6598 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {return 0;}])], 6599 [gcc_cv_no_pie=yes], 6600 [gcc_cv_no_pie=no]) 6601 LDFLAGS="$saved_LDFLAGS"]) 6602if test "$gcc_cv_no_pie" = "yes"; then 6603 NO_PIE_FLAG="-no-pie" 6604fi 6605AC_SUBST([NO_PIE_FLAG]) 6606 6607# Check linker supports '-z bndplt' 6608ld_bndplt_support=no 6609AC_MSG_CHECKING(linker -z bndplt option) 6610if test x"$ld_is_gold" = xno; then 6611 if test $in_tree_ld = yes ; then 6612 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then 6613 ld_bndplt_support=yes 6614 fi 6615 elif test x$gcc_cv_ld != x; then 6616 # Check if linker supports -a bndplt option 6617 if $gcc_cv_ld --help 2>&1 | grep -- '-z bndplt' > /dev/null; then 6618 ld_bndplt_support=yes 6619 fi 6620 fi 6621fi 6622if test x"$ld_bndplt_support" = xyes; then 6623 AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1, 6624 [Define if your linker supports -z bndplt]) 6625fi 6626AC_MSG_RESULT($ld_bndplt_support) 6627 6628# Check linker supports '--push-state'/'--pop-state' 6629ld_pushpopstate_support=no 6630AC_MSG_CHECKING(linker --push-state/--pop-state options) 6631if test x"$ld_is_gold" = xno; then 6632 if test $in_tree_ld = yes ; then 6633 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then 6634 ld_pushpopstate_support=yes 6635 fi 6636 elif test x$gcc_cv_ld != x; then 6637 # Check if linker supports --push-state/--pop-state options 6638 if $gcc_cv_ld --help 2>&1 | grep -- '--push-state' > /dev/null; then 6639 ld_pushpopstate_support=yes 6640 fi 6641 fi 6642fi 6643if test x"$ld_pushpopstate_support" = xyes; then 6644 AC_DEFINE(HAVE_LD_PUSHPOPSTATE_SUPPORT, 1, 6645 [Define if your linker supports --push-state/--pop-state]) 6646fi 6647AC_MSG_RESULT($ld_pushpopstate_support) 6648 6649# Configure the subdirectories 6650# AC_CONFIG_SUBDIRS($subdirs) 6651 6652# Create the Makefile 6653# and configure language subdirectories 6654AC_CONFIG_FILES($all_outputs) 6655 6656AC_CONFIG_COMMANDS([default], 6657[ 6658case ${CONFIG_HEADERS} in 6659 *auto-host.h:config.in*) 6660 echo > cstamp-h ;; 6661esac 6662# Make sure all the subdirs exist. 6663for d in $subdirs doc build common c-family 6664do 6665 test -d $d || mkdir $d 6666done 6667], 6668[subdirs='$subdirs']) 6669AC_OUTPUT 6670 6671