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-retain-symbols-file is not what it seems. Update the makefiles

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and configury to use --version-script.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105271 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2010-06-01 14:56:56 +00:00
parent c6e1f67b17
commit da612d6226
5 changed files with 50 additions and 31 deletions
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4
autoconf/configure.ac
View File

@@ -1039,8 +1039,8 @@ AC_LINK_USE_R
dnl Determine whether the linker supports the -export-dynamic option.
AC_LINK_EXPORT_DYNAMIC
dnl Determine whether the linker supports the -retain-symbols-file option.
AC_LINK_RETAIN_SYMBOLS_FILE
dnl Determine whether the linker supports the --version-script option.
AC_LINK_VERSION_SCRIPT
dnl Check for libtool and the library that has dlopen function (which must come
dnl before the AC_PROG_LIBTOOL check in order to enable dlopening libraries with

23
autoconf/m4/link_options.m4
View File

@@ -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
])