diff options
| -rw-r--r-- | ChangeLog | 6 | ||||
| -rw-r--r-- | configure.in | 10 |
2 files changed, 15 insertions, 1 deletions
@@ -1,3 +1,9 @@ +Tue Oct 23 14:06:47 2012 Nobuyoshi Nakada <nobu@ruby-lang.org> + + * 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] + Tue Oct 23 12:57:29 2012 Koichi Sasada <ko1@atdot.net> * vm_core.h, vm_insnhelper.c, vm_eval.c (OPT_CALL_CFUNC_WITHOUT_FRAME): 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) |