diff options
Diffstat (limited to 'autoconf/m4/link_options.m4')
| -rw-r--r-- | autoconf/m4/link_options.m4 | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/autoconf/m4/link_options.m4 b/autoconf/m4/link_options.m4 index 697abab07d..251c8a4f50 100644 --- a/autoconf/m4/link_options.m4 +++ b/autoconf/m4/link_options.m4 @@ -40,14 +40,14 @@ if test "$llvm_cv_link_use_export_dynamic" = yes ; then ]) # -# Determine if the system can handle the -retain-symbols-file option being +# Determine if the system can handle the --version-script option being # passed to the linker. # # This macro is specific to LLVM. # -AC_DEFUN([AC_LINK_RETAIN_SYMBOLS_FILE], -[AC_CACHE_CHECK([for compiler -Wl,-retain-symbols-file option], - [llvm_cv_link_use_retain_symbols_file], +AC_DEFUN([AC_LINK_VERSION_SCRIPT], +[AC_CACHE_CHECK([for compiler -Wl,--version-script option], + [llvm_cv_link_use_version_script], [ AC_LANG_PUSH([C]) oldcflags="$CFLAGS" @@ -67,18 +67,21 @@ AC_DEFUN([AC_LINK_RETAIN_SYMBOLS_FILE], (umask 077 && mkdir "$tmp") } || exit $? - echo "main" > "$tmp/exports" + echo "{" > "$tmp/export.map" + echo " global: main;" >> "$tmp/export.map" + echo " local: *;" >> "$tmp/export.map" + echo "};" >> "$tmp/export.map" - CFLAGS="$CFLAGS -Wl,-retain-symbols-file=$tmp/exports" + CFLAGS="$CFLAGS -Wl,--version-script=$tmp/export.map" AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],[[]])], - [llvm_cv_link_use_retain_symbols_file=yes],[llvm_cv_link_use_retain_symbols_file=no]) - rm "$tmp/exports" + [llvm_cv_link_use_version_script=yes],[llvm_cv_link_version_script=no]) + rm "$tmp/export.map" rmdir "$tmp" CFLAGS="$oldcflags" AC_LANG_POP([C]) ]) -if test "$llvm_cv_link_use_retain_symbols_file" = yes ; then - AC_SUBST(HAVE_LINK_RETAIN_SYMBOLS_FILE,1) +if test "$llvm_cv_link_use_version_script" = yes ; then + AC_SUBST(HAVE_LINK_VERSION_SCRIPT,1) fi ]) |