Update ax_type_socklen_t.m4 to latest version
Fixes warning about obsolete macro AC_TRY_COMPILE with autoconf 2.71
# ===========================================================================
-# http://www.gnu.org/software/autoconf-archive/ax_type_socklen_t.html
+# https://www.gnu.org/software/autoconf-archive/ax_type_socklen_t.html
# ===========================================================================
#
# SYNOPSIS
# Public License for more details.
#
# You should have received a copy of the GNU General Public License along
-# with this program. If not, see <http://www.gnu.org/licenses/>.
+# with this program. If not, see <https://www.gnu.org/licenses/>.
#
# As a special exception, the respective Autoconf Macro's copyright owner
# gives unlimited permission to copy, distribute and modify the configure
# modified version of the Autoconf Macro, you may extend this special
# exception to the GPL to apply to your modified version as well.
-#serial 6
+#serial 8
AU_ALIAS([TYPE_SOCKLEN_T], [AX_TYPE_SOCKLEN_T])
AC_DEFUN([AX_TYPE_SOCKLEN_T],
-[AC_CACHE_CHECK([for socklen_t], ac_cv_ax_type_socklen_t,
-[
- AC_TRY_COMPILE(
- [#include <sys/types.h>
- #include <sys/socket.h>],
- [socklen_t len = (socklen_t) 42; return (!len);],
- ac_cv_ax_type_socklen_t=yes,
- ac_cv_ax_type_socklen_t=no)
+[AC_CACHE_CHECK([for socklen_t], [ac_cv_ax_type_socklen_t],
+[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
+ #include <sys/socket.h>]],
+ [[socklen_t len = (socklen_t) 42; return (!len);]])],
+ [ac_cv_ax_type_socklen_t=yes],
+ [ac_cv_ax_type_socklen_t=no])
])
if test $ac_cv_ax_type_socklen_t != yes; then
AC_DEFINE(socklen_t, int, [Substitute for socklen_t])
