diff options
Diffstat (limited to 'gcc/configure')
| -rwxr-xr-x | gcc/configure | 76 |
1 files changed, 74 insertions, 2 deletions
diff --git a/gcc/configure b/gcc/configure index 197a152dfa8..aa961b77acd 100755 --- a/gcc/configure +++ b/gcc/configure @@ -3639,6 +3639,11 @@ else fi +case $target in + *darwin*) ld64_flag=yes;; # Darwin can only use a ld64-compatible linker. + *) ld64_flag=no;; +esac + # With pre-defined ld # Check whether --with-ld was given. @@ -3651,6 +3656,8 @@ if test x"${DEFAULT_LINKER+set}" = x"set"; then as_fn_error "cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER" "$LINENO" 5 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then gnu_ld_flag=yes + elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep ld64- > /dev/null; then + ld64_flag=yes fi cat >>confdefs.h <<_ACEOF @@ -18423,7 +18430,7 @@ else lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2 lt_status=$lt_dlunknown cat > conftest.$ac_ext <<_LT_EOF -#line 18426 "configure" +#line 18433 "configure" #include "confdefs.h" #if HAVE_DLFCN_H @@ -18529,7 +18536,7 @@ else lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2 lt_status=$lt_dlunknown cat > conftest.$ac_ext <<_LT_EOF -#line 18532 "configure" +#line 18539 "configure" #include "confdefs.h" #if HAVE_DLFCN_H @@ -28287,6 +28294,71 @@ _ACEOF { $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_ld_compress_debug" >&5 $as_echo "$gcc_cv_ld_compress_debug" >&6; } +if test x"$ld64_flag" = x"yes"; then + + # Set defaults for possibly untestable items. + gcc_cv_ld64_export_dynamic=0 + + if test "$build" = "$host"; then + darwin_try_test=1 + else + darwin_try_test=0 + fi + + # On Darwin, because of FAT library support, it is often possible to execute + # exes from compatible archs even when the host differs from the build system. + case "$build","$host" in + x86_64-*-darwin*,i?86-*-darwin* | powerpc64*-*-darwin*,powerpc*-*-darwin*) + darwin_try_test=1;; + *) ;; + esac + + # If the configurer specified a minimum ld64 version to be supported, then use + # that to determine feature support. + if test x"${gcc_cv_ld64_version}" != x; then + { $as_echo "$as_me:${as_lineno-$LINENO}: checking ld64 major version" >&5 +$as_echo_n "checking ld64 major version... " >&6; } + IFS=. read gcc_cv_ld64_major gcc_cv_ld64_minor <<< "${gcc_cv_ld64_version}" + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_ld64_major" >&5 +$as_echo "$gcc_cv_ld64_major" >&6; } + if test "$gcc_cv_ld64_major" -ge 236; then + gcc_cv_ld64_export_dynamic=1 + fi + elif test -x "$gcc_cv_ld" -a "$darwin_try_test" -eq 1; then + # If the version was not specified, try to find it. + { $as_echo "$as_me:${as_lineno-$LINENO}: checking linker version" >&5 +$as_echo_n "checking linker version... " >&6; } + if test x"${gcc_cv_ld64_version}" = x; then + gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | grep ld64 | sed s/.*ld64-// | awk '{print $1}'` + fi + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_ld64_version" >&5 +$as_echo "$gcc_cv_ld64_version" >&6; } + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking linker for -export_dynamic support" >&5 +$as_echo_n "checking linker for -export_dynamic support... " >&6; } + gcc_cv_ld64_export_dynamic=1 + if $gcc_cv_ld -export_dynamic < /dev/null 2>&1 | grep 'unknown option' > /dev/null; then + gcc_cv_ld64_export_dynamic=0 + fi + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_ld64_export_dynamic" >&5 +$as_echo "$gcc_cv_ld64_export_dynamic" >&6; } + fi + + if test x"${gcc_cv_ld64_version}" != x; then + +cat >>confdefs.h <<_ACEOF +#define LD64_VERSION "${gcc_cv_ld64_version}" +_ACEOF + + fi + + +cat >>confdefs.h <<_ACEOF +#define LD64_HAS_EXPORT_DYNAMIC $gcc_cv_ld64_export_dynamic +_ACEOF + +fi + # -------- # UNSORTED # -------- |