diff options
Diffstat (limited to 'gcc/configure.ac')
| -rw-r--r-- | gcc/configure.ac | 171 |
1 files changed, 132 insertions, 39 deletions
diff --git a/gcc/configure.ac b/gcc/configure.ac index 8ef11e3..19975fa 100644 --- a/gcc/configure.ac +++ b/gcc/configure.ac @@ -358,7 +358,7 @@ if test x"${DEFAULT_LINKER+set}" = x"set"; then AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER]) elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then gnu_ld_flag=yes - elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep ld64- > /dev/null; then + elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep 'PROJECT:ld\(64\)*-' > /dev/null; then ld64_flag=yes fi AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER", @@ -563,35 +563,6 @@ if test $ac_cv_std_swap_in_utility = yes; then [Define if <utility> defines std::swap.]) fi -# Check whether compiler is affected by placement new aliasing bug (PR 29286). -# If the host compiler is affected by the bug, and we build with optimization -# enabled (which happens e.g. when cross-compiling), the pool allocator may -# get miscompiled. Use -fno-strict-aliasing to work around this problem. -# Since there is no reliable feature check for the presence of this bug, -# we simply use a GCC version number check. (This should never trigger for -# stages 2 or 3 of a native bootstrap.) -aliasing_flags= -if test "$GCC" = yes; then - saved_CXXFLAGS="$CXXFLAGS" - - # The following test compilation will succeed if and only if $CXX accepts - # -fno-strict-aliasing *and* is older than GCC 4.3. - CXXFLAGS="$CXXFLAGS -fno-strict-aliasing" - AC_MSG_CHECKING([whether $CXX is affected by placement new aliasing bug]) - AC_COMPILE_IFELSE([AC_LANG_SOURCE([ -#if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3) -#error compiler not affected by placement new aliasing bug -#endif -])], - [AC_MSG_RESULT([yes]); aliasing_flags='-fno-strict-aliasing'], - [AC_MSG_RESULT([no])]) - - CXXFLAGS="$saved_CXXFLAGS" -fi -AC_SUBST(aliasing_flags) - - - # --------------------- # Warnings and checking # --------------------- @@ -1366,7 +1337,7 @@ AC_HEADER_TIOCGWINSZ AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \ fcntl.h ftw.h unistd.h sys/auxv.h sys/file.h sys/time.h sys/mman.h \ sys/resource.h sys/param.h sys/times.h sys/stat.h sys/locking.h \ - direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h) + direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h libgen.h) # Check for thread headers. AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=]) @@ -1397,7 +1368,7 @@ AC_CHECK_HEADERS(ext/hash_map) ZW_CREATE_DEPDIR AC_CONFIG_COMMANDS([gccdepdir],[ ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR - for lang in $subdirs c-family common analyzer text-art rtl-ssa sym-exec + for lang in $subdirs c-family common analyzer diagnostics text-art rtl-ssa sym-exec do ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR]) @@ -1574,7 +1545,7 @@ AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \ popen sysconf strsignal getrusage nl_langinfo \ gettimeofday mbstowcs wcswidth mmap posix_fallocate setlocale \ gcc_UNLOCKED_FUNCS madvise mallinfo mallinfo2 fstatat getauxval \ - clock_gettime munmap msync get_current_dir_name) + clock_gettime munmap msync get_current_dir_name memrchr) # At least for glibc, clock_gettime is in librt. But don't pull that # in if it still doesn't give us the function we want. @@ -1645,9 +1616,17 @@ CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC" # normal autoconf function for these. But force definition of # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre # basename handling in libiberty.h. -AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[ +# Match the configure test in libiberty so that we have a consistent result. +AC_CHECK_DECLS([basename(char*)], , ,[ #undef HAVE_DECL_BASENAME #define HAVE_DECL_BASENAME 1 +#if HAVE_LIBGEN_H +# include <libgen.h> +#endif +#include "ansidecl.h" +#include "system.h"]) + +AC_CHECK_DECLS([strstr(const char*,const char*)], , ,[ #include "ansidecl.h" #include "system.h"]) @@ -1773,6 +1752,21 @@ if test $ac_cv_have_decl_O_NONBLOCK = yes; then [Define if O_NONBLOCK supported by fcntl.]) fi +# Check if personality and ADDR_NO_RANDOMIZE are declared +# in sys/personality.h +AC_CACHE_CHECK(for personality ADDR_NO_RANDOMIZE, + ac_cv_personality_addr_no_randomize, [ +AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#include <sys/personality.h>]], [[ +personality (personality (0xffffffffU) | ADDR_NO_RANDOMIZE);]])], +[ac_cv_personality_addr_no_randomize=yes], +[ac_cv_personality_addr_no_randomize=no])]) +if test $ac_cv_personality_addr_no_randomize = yes; then + AC_DEFINE(HOST_HAS_PERSONALITY_ADDR_NO_RANDOMIZE, 1, + [Define if personality and ADDR_NO_RANDOMIZE are declared in +sys/personality.h.]) +fi + # C++ Modules would like some networking features to provide the mapping # server. You can still use modules without them though. @@ -3313,8 +3307,8 @@ case $target in esac # Check if we have .[us]leb128, and support symbol arithmetic with it. -# Older versions of GAS and some non-GNU assemblers, have a bugs handling -# these directives, even when they appear to accept them. +# Older versions of GAS and some non-GNU assemblers have bugs in handling +# of these directives, even when they appear to accept them. gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128, [$check_leb128_asflags], [ .data @@ -3336,6 +3330,11 @@ elif test "x$gcc_cv_otool" != x; then | grep '04 80 0a 8e 78 80 80 80 80 80 80 80 80 80 01' >/dev/null; then gcc_cv_as_leb128=yes fi +elif test "x$gcc_cv_readelf" != x; then + if $gcc_cv_readelf -x .data conftest.o 2>/dev/null \ + | grep '04800a8e 78808080 80808080 808001' >/dev/null; then + gcc_cv_as_leb128=yes + fi else # play safe, assume the assembler is broken. : @@ -3404,6 +3403,12 @@ gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,, esac fi ;; + x86_64-*-darwin* | i?86-*-darwin* | powerpc*-darwin-*) + # Darwin has assemblers that support .cfi_ instructions, but that then + # triggers emission of compact unwind which has incompatibilities with + # current GCC output. + gcc_cv_as_cfi_directive=no + ;; *-*-*) gcc_cv_as_cfi_directive=yes ;; @@ -4184,6 +4189,35 @@ else [$tls_as_opt], [$conftest_s],, [set_have_as_tls=yes]) fi +case $target_os in + win32 | pe | cygwin* | mingw32*) + if test $set_have_as_tls = yes; then + # Hack to check whether ld breaks on @secrel32 for Windows + if test $in_tree_ld = yes; then + if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 44 -o "$gcc_cv_gld_major_version" -gt 2; then + : # ld support for @secrel32 was fixed in this version + else + AC_MSG_ERROR([ld version is known to have broken secrel32 relocations, configure without --enable-tls or with --disable-tls to remove this error. See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80881 for more information.]) + fi + elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then + echo '.text' > conftest.s + echo 'foo: nop' >> conftest.s + echo '.data' >> conftest.s + echo '.secrel32 foo' >> conftest.s + if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 && $gcc_cv_ld -o conftest.exe conftest.o > /dev/null; then + if $gcc_cv_objdump -h conftest.exe | grep '\.reloc\>' > /dev/null; then + AC_MSG_ERROR([ld has broken secrel32 relocations, configure without --enable-tls or with --disable-tls to remove this error. See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80881 for more information.]) + fi + else + AC_MSG_ERROR([Error occurred while checking for broken secrel32 relocations. See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80881 for more information.]) + fi + rm -f conftest.s conftest.o conftest.exe + else + AC_MSG_ERROR([Cannot check for broken secrel32 relocations to determine --enable-tls support. See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80881 for more information.]) + fi + fi + ;; +esac if test $set_have_as_tls = yes ; then AC_DEFINE(HAVE_AS_TLS, 1, [Define if your assembler and linker support thread-local storage.]) @@ -4415,6 +4449,15 @@ case "$target" in ldr x0, [[x2, #:gotpage_lo15:globalsym]] ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1, [Define if your assembler supports relocs needed by -fpic.])]) + # Check if we have binutils support for AEABI build attributes. + gcc_GAS_CHECK_FEATURE([support of AEABI build attributes], gcc_cv_as_aarch64_aeabi_build_attributes,, + [ + .aeabi_subsection aeabi_feature_and_bits, optional, ULEB128 + .aeabi_attribute Tag_Feature_BTI, 1 + .aeabi_attribute Tag_Feature_PAC, 1 + .aeabi_attribute Tag_Feature_GCS, 1 + ],,[AC_DEFINE(HAVE_AS_AEABI_BUILD_ATTRIBUTES, 1, + [Define if your assembler supports AEABI build attributes.])]) # Enable Branch Target Identification Mechanism and Return Address # Signing by default. AC_ARG_ENABLE(standard-branch-protection, @@ -6360,6 +6403,7 @@ if test x"$ld64_flag" = x"yes"; then gcc_cv_ld64_platform_version=0 gcc_cv_ld64_macos_version_min=0 gcc_cv_ld64_demangle=0 + gcc_cv_ld64_no_deduplicate=0 if test "$build" = "$host"; then darwin_try_test=1 @@ -6387,6 +6431,9 @@ if test x"$ld64_flag" = x"yes"; then if test "$gcc_cv_ld64_major" -ge 236; then gcc_cv_ld64_export_dynamic=1 fi + if test "$gcc_cv_ld64_major" -ge 262; then + gcc_cv_ld64_no_deduplicate=1 + fi if test "$gcc_cv_ld64_major" -ge 512; then gcc_cv_ld64_platform_version=1 gcc_cv_ld64_macos_version_min=1 @@ -6395,8 +6442,9 @@ if test x"$ld64_flag" = x"yes"; then # If the version was not specified, try to find it. AC_MSG_CHECKING(linker version) if test x"${gcc_cv_ld64_version}" = x; then - gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | $EGREP 'ld64|dyld' \ - | sed -e 's/.*ld64-//' -e 's/.*dyld-//'| awk '{print $1}'` + gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | $EGREP 'ld64|dyld|PROJECT:ld' \ + | sed -e 's/.*ld64-//' -e 's/.*dyld-//' -e 's/.*PROJECT:ld-//' \ + | awk '{print $1}'` fi AC_MSG_RESULT($gcc_cv_ld64_version) @@ -6414,6 +6462,13 @@ if test x"$ld64_flag" = x"yes"; then fi AC_MSG_RESULT($gcc_cv_ld64_export_dynamic) + AC_MSG_CHECKING(linker for -no_deduplicate support) + gcc_cv_ld64_no_deduplicate=1 + if $gcc_cv_ld -no_deduplicate < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then + gcc_cv_ld64_no_deduplicate=0 + fi + AC_MSG_RESULT($gcc_cv_ld64_no_deduplicate) + AC_MSG_CHECKING(linker for -platform_version support) gcc_cv_ld64_platform_version=1 if $gcc_cv_ld -platform_version macos 10.5 0.0 < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then @@ -6440,6 +6495,9 @@ if test x"$ld64_flag" = x"yes"; then AC_DEFINE_UNQUOTED(LD64_HAS_EXPORT_DYNAMIC, $gcc_cv_ld64_export_dynamic, [Define to 1 if ld64 supports '-export_dynamic'.]) + AC_DEFINE_UNQUOTED(LD64_HAS_NO_DEDUPLICATE, $gcc_cv_ld64_no_deduplicate, + [Define to 1 if ld64 supports '-no_deduplicate'.]) + AC_DEFINE_UNQUOTED(LD64_HAS_PLATFORM_VERSION, $gcc_cv_ld64_platform_version, [Define to 1 if ld64 supports '-platform_version'.]) @@ -6731,7 +6789,7 @@ ie0: .space 8 .global _start .text _start: - addis 9,13,ie0@got@tprel@ha + addis 9,2,ie0@got@tprel@ha ld 9,ie0@got@tprel@l(9) EOF if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \ @@ -7910,6 +7968,41 @@ standards-compatible mode on s390 targets.]) ;; esac +# On x86-64, when profiling is enabled with shrink wrapping, the mcount +# call may not be placed at the function entry after +# pushq %rbp +# movq %rsp,%rbp +# As the result, the profile data may be skewed which makes PGO less +# effective: +# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120881 +# Enable -mfentry by default on x86-64 to put the profiling counter call +# before the prologue. +AC_ARG_ENABLE(x86-64-mfentry, + [AS_HELP_STRING([--enable-x86-64-mfentry], + [enable -mfentry by default on x86-64 targets])], + [case "${enableval}" in + yes | no | auto) + enable_x86_64_mfentry=$enableval + ;; + *) + AC_MSG_ERROR(['$enable_x86_64_mfentry' is an invalid value for --enable-x86-64-mfentry. Valid choices are 'yes', 'no' and 'auto'.]) + ;; + esac], + [enable_x86_64_mfentry=auto]) + +if test x"$enable_x86_64_mfentry" = xauto; then + case "${target}" in + i?86-*-*gnu* | x86_64-*-*gnu*) + # Enable -mfentry by default with glibc on x86. + enable_x86_64_mfentry=yes + ;; + esac +fi + +gif=`if test x$enable_x86_64_mfentry = xyes; then echo 1; else echo 0; fi` +AC_DEFINE_UNQUOTED(ENABLE_X86_64_MFENTRY, $gif, +[Define to enable -mfentry by default on x86-64.]) + # Check if the linker supports '-z now' ld_now_support=no AC_MSG_CHECKING(linker -z now option) |