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authorH.J. Lu <hjl.tools@gmail.com>2007-01-14 15:39:41 +0000
committerH.J. Lu <hjl.tools@gmail.com>2007-01-14 15:39:41 +0000
commit4e5de5ac83fe7f4d8cb5cdcc9362415db56c29b1 (patch)
treec046db934e0db45697f79c4eedf706c2434033ce
parent1208538e8cc250573efd3f18f93384eea1fbbf26 (diff)
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2007-01-14 H.J. Lu <hongjiu.lu@intel.com>
* ld-symbolic.m4: New.
-rw-r--r--config/ChangeLog8
-rw-r--r--config/ld-symbolic.m445
2 files changed, 51 insertions, 2 deletions
diff --git a/config/ChangeLog b/config/ChangeLog
index 225e576..bf59616 100644
--- a/config/ChangeLog
+++ b/config/ChangeLog
@@ -1,7 +1,11 @@
+2007-01-14 H.J. Lu <hongjiu.lu@intel.com>
+
+ * ld-symbolic.m4: New.
+
2007-01-11 Paolo Bonzini <bonzini@gnu.org>
- * warnings.m4: Use m4_expand_once to clear the AC_SUBST'ed variable.
- (ACX_PROG_CC_WARNINGS_ARE_ERRORS): Fix typo. Add optional 2nd argument.
+ * warnings.m4: Use m4_expand_once to clear the AC_SUBST'ed variable.
+ (ACX_PROG_CC_WARNINGS_ARE_ERRORS): Fix typo. Add optional 2nd argument.
2007-01-11 Paolo Bonzini <bonzini@gnu.org>
diff --git a/config/ld-symbolic.m4 b/config/ld-symbolic.m4
new file mode 100644
index 0000000..16d64f9
--- /dev/null
+++ b/config/ld-symbolic.m4
@@ -0,0 +1,45 @@
+dnl Copyright (C) 2007 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License. As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+dnl Set SYMBOLIC_LDFLAGS to -Bsymbolic-functions for GNU linker if it
+dnl is supported.
+AC_DEFUN([ACX_PROG_LD_GNU_SYMBOLIC],
+[AC_CACHE_CHECK([if the GNU linker ($LD) supports -Bsymbolic-functions],
+acl_cv_prog_gnu_ld_symbolic, [
+acl_cv_prog_gnu_ld_symbolic=no
+AC_REQUIRE([AC_LIB_PROG_LD_GNU])
+if test x"$with_gnu_ld" = x"yes"; then
+ if $LD --help 2>&1 </dev/null | grep Bsymbolic-functions 1>&5; then
+ acl_cv_prog_gnu_ld_symbolic=yes
+ fi
+fi])
+if test x"$acl_cv_prog_gnu_ld_symbolic" = x"yes"; then
+ SYMBOLIC_LDFLAGS="-Wl,-Bsymbolic-functions"
+else
+ SYMBOLIC_LDFLAGS=''
+fi
+])
+
+dnl Set DYNAMIC_LIST_CPP_NEW_LDFLAGS to --dynamic-list-cpp-new for GNU
+dnl linker if it is supported.
+AC_DEFUN([ACX_PROG_LD_GNU_DYNAMIC_LIST_CPP_NEW],
+[AC_CACHE_CHECK([if the GNU linker ($LD) supports --dynamic-list-cpp-new],
+acl_cv_prog_gnu_ld_dynamic_list_cpp_new, [
+acl_cv_prog_gnu_ld_dynamic_list_cpp_new=no
+AC_REQUIRE([ACX_PROG_LD_GNU_SYMBOLIC])
+if test x"$with_gnu_ld" = x"yes" -a \
+ x"$acl_cv_prog_gnu_ld_symbolic" = x"yes"; then
+ if $LD --help 2>&1 </dev/null | grep dynamic-list-cpp-new 1>&5; then
+ acl_cv_prog_gnu_ld_dynamic_list_cpp_new=yes
+ fi
+fi])
+if test x"$acl_cv_prog_gnu_ld_dynamic_list_cpp_new" = x"yes"; then
+ DYNAMIC_LIST_CPP_NEW_LDFLAGS="$SYMBOLIC_LDFLAGS -Wl,--dynamic-list-cpp-new"
+else
+ DYNAMIC_LIST_CPP_NEW_LDFLAGS=''
+fi
+])