diff options
| -rw-r--r-- | configure.ac | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/configure.ac b/configure.ac index 155d5771..76cf91eb 100644 --- a/configure.ac +++ b/configure.ac @@ -415,12 +415,17 @@ if test "x$GCC" = xyes; then # Restore CFLAGS; VISIBILITY_CFLAGS are added to it where needed. CFLAGS=$save_CFLAGS + AC_SUBST([VISIBILITY_CFLAGS]) +fi - if test "x$VISIBILITY_CFLAGS" != x; then - AC_DEFINE(HAVE_VISIBILITY, 1, [Compiler has -fvisibility support]) - fi +AC_MSG_CHECKING([whether $CC supports __attribute__((visibility))]) +AC_LINK_IFELSE([AC_LANG_PROGRAM([ + int foo_default( void ) __attribute__((visibility("default"))); + int foo_hidden( void ) __attribute__((visibility("hidden"))); +])], HAVE_ATTRIBUTE_VISIBILITY="yes"; AC_MSG_RESULT([yes]), AC_MSG_RESULT([no])); - AC_SUBST([VISIBILITY_CFLAGS]) +if test "x$HAVE_ATTRIBUTE_VISIBILITY" = xyes; then + AC_DEFINE(HAVE_VISIBILITY, 1, [Compiler supports __attribute__((visibility))]) fi AC_SUBST(WARN_CFLAGS) |