blob: 9edba1f433313769d86a3d691180c8f2678986ad (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
|
# SPDX-License-Identifier: BSD-3-Clause
# Copyright (c) 2017 Linaro Limited
#
# ODP_VISIBILITY
# --------------
# Enable -fvisibility=hidden if using a gcc that supports it
AC_DEFUN([ODP_VISIBILITY], [dnl
VISIBILITY_CFLAGS="-fvisibility=hidden"
AC_CACHE_CHECK([whether $CC supports -fvisibility=hidden],
[odp_cv_visibility_hidden], [dnl
OLD_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $VISIBILITY_CFLAGS"
AC_LINK_IFELSE([AC_LANG_PROGRAM()], [odp_cv_visibility_hidden=yes],
[odp_cv_visibility_hidden=no])
CFLAGS=$OLD_CFLAGS
])
if test "x$odp_cv_visibility_hidden" != "xyes" ; then
VISIBILITY_CFLAGS=""
fi
AC_SUBST(VISIBILITY_CFLAGS)
]) # ODP_VISIBILITY
|
