diff options
| author | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2012-10-23 05:06:50 +0000 |
|---|---|---|
| committer | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2012-10-23 05:06:50 +0000 |
| commit | 024939558224abd68a0bba5cae8d2930eed5bc0c (patch) | |
| tree | 4e7ac0755561eb33f306632eba9b2387b493c615 /configure.in | |
| parent | a4f79a6ece4b02720507b0ff249c2964ee859479 (diff) | |
configure.in: no visibility option for older GCC
* configure.in (visibility_option): visibility attribute is not
available before GCC 4, so do not use -fvisibility option in that
case. [ruby-core:48147] [Bug #7205]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37296 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'configure.in')
| -rw-r--r-- | configure.in | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/configure.in b/configure.in index c038aa29e6..a3d8a6795c 100644 --- a/configure.in +++ b/configure.in @@ -644,7 +644,15 @@ if test "$GCC" = ""; then AS_CASE(["$target_os"],[aix*],[warnflags="$warnflags -qinfo=por" rb_cv_warnflags="$rb_cv_warnflags -qinfo=por"]) fi if test "$GCC" = yes; then - RUBY_TRY_CFLAGS(-fvisibility=hidden, [RUBY_APPEND_OPTION(XCFLAGS, -fvisibility=hidden)]) + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([ + @%:@if !(defined __GNUC__ && __GNUC__ >= 4) + @%:@error not GCC 4 or later + >>>not GCC 4 or later<<< + @%:@endif])], + [visibility_option=yes], [visibility_option=no]) + if test "$visibility_option" = yes; then + RUBY_TRY_CFLAGS(-fvisibility=hidden, [visibility_option=yes], [visibility_option=no]) + fi AC_SUBST(WERRORFLAG, "-Werror") if test "$visibility_option" = yes; then RUBY_APPEND_OPTION(XCFLAGS, -fvisibility=hidden) |