# check for GNUC visibility support
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for GNUC visibility attribute" >&5
$as_echo_n "checking for GNUC visibility attribute... " >&6; }
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h.  */

void
__attribute__ ((visibility ("hidden")))
     f_hidden (void)
{
}
void
__attribute__ ((visibility ("internal")))
     f_internal (void)
{
}
void
__attribute__ ((visibility ("protected")))
     f_protected (void)
{
}
void
__attribute__ ((visibility ("default")))
     f_default (void)
{
}
int main (int argc, char **argv)
{
	f_hidden();
	f_internal();
	f_protected();
	f_default();
	return 0;
}

_ACEOF
rm -f conftest.$ac_objext
glib_ac_compile_save="$ac_compile"
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext'
if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
	(eval $ac_compile) 2>conftest.err
	ac_status=$?
	if test -s conftest.err; then
	    grep -v '^ *+' conftest.err >conftest.er1
	    cat conftest.er1 >&5
	    mv -f conftest.er1 conftest.err
	fi
	$as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
	test $ac_status = 0; } &&
    { ac_try='(if test -s conftest.err; then false ; else true; fi)'
	{ { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
	    (eval $ac_try) 2>&5
	    ac_status=$?
	    $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
	    test $ac_status = 0; }; }; then :
    g_have_gnuc_visibility=yes
else
    echo "$as_me: failed program was:" >&5
    cat conftest.$ac_ext >&5
    g_have_gnuc_visibility=no

    fiac_compile="$glib_ac_compile_save"
    rm -f conftest.$ac_objext conftest.err conftest.$ac_ext
    { $as_echo "$as_me:${as_lineno-$LINENO}: result: $g_have_gnuc_visibility" >&5
	$as_echo "$g_have_gnuc_visibility" >&6; }
    if test x$g_have_gnuc_visibility = xyes; then
	HAVE_GNUC_VISIBILITY_TRUE=
	HAVE_GNUC_VISIBILITY_FALSE='#'
    else
	HAVE_GNUC_VISIBILITY_TRUE='#'
	HAVE_GNUC_VISIBILITY_FALSE=
    fi