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build: Add missing update of --enable-visibility flag

Merged Gaël Bonithon requested to merge Tamaranch/libxfce4util:visibility_define into master
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@@ -76,7 +76,6 @@ AC_PROG_CC()
AM_PROG_CC_C_O()
AC_PROG_INSTALL()
AC_PATH_PROG([XDT_GEN_VISIBILITY], [xdt-gen-visibility])
AC_PATH_PROG([XDT_CHECK_ABI], [xdt-check-abi])
dnl **************************
dnl *** Initialize libtool ***
@@ -151,22 +150,27 @@ dnl *** Do not replace with the Xdt macro ***
dnl *** because it cannot cope with the ***
dnl *** libxfce4util_*_version variables ***
dnl *****************************************
AC_ARG_ENABLE([visibility], AS_HELP_STRING([--disable-visibility], [Do not use ELF visibility attributes]), [], [enable_visibility=yes])
AC_ARG_ENABLE([visibility],
AS_HELP_STRING([--disable-visibility],
[Do not use ELF visibility attributes]),
[enable_visibility=$enableval], [enable_visibility=yes])
have_gnuc_visibility=no
if test x"$enable_visibility" != x"no"; then
dnl Check whether the compiler supports the visibility attribute
save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -Wall -Werror"
if test "x$enable_visibility" != "xno"; then
XDT_SUPPORTED_FLAGS([xdt_vis_test_cflags], [-Wall -Werror -Wno-unused-parameter -fvisibility=hidden])
saved_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $xdt_vis_test_cflags"
AC_MSG_CHECKING([whether $CC supports the GNUC visibility attribute])
AC_COMPILE_IFELSE([AC_LANG_SOURCE(
[
void test_default (void);
void test_hidden (void);
void __attribute__ ((visibility("default"))) test_default (void) {}
void __attribute__ ((visibility("hidden"))) test_hidden (void) {}
int main (int argc, char **argv) { test_default (); test_hidden (); return 0; }
void test_default(void);
void test_hidden(void);
void __attribute__((visibility("default"))) test_default(void) {}
void __attribute__((visibility("hidden"))) test_hidden(void) {}
int main(int argc, char **argv) {
test_default();
test_hidden();
return 0;
}
])],
[
have_gnuc_visibility=yes
@@ -175,12 +179,12 @@ if test x"$enable_visibility" != x"no"; then
[
AC_MSG_RESULT([no])
])
CFLAGS="$save_CFLAGS"
CFLAGS="$saved_CFLAGS"
fi
if test x"$have_gnuc_visibility" = x"yes"; then
CPPFLAGS="$CPPFLAGS -DHAVE_GNUC_VISIBILITY"
if test "x$have_gnuc_visibility" = "xyes"; then
CPPFLAGS="$CPPFLAGS -DENABLE_SYMBOL_VISIBILITY=1"
CFLAGS="$CFLAGS -fvisibility=hidden"
fi
AM_CONDITIONAL([HAVE_GNUC_VISIBILITY], [test x"$have_gnuc_visibility" = x"yes"])
dnl *****************************
dnl *** Generate output files ***
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