diff options
Diffstat (limited to 'config')
| -rw-r--r-- | config/ChangeLog | 8 | ||||
| -rw-r--r-- | config/ld-symbolic.m4 | 45 |
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 +]) |