Modernize checks for ISO/GNU varargs

Part of a patch by Javier Jardón.

Bug: https://bugs.freedesktop.org/show_bug.cgi?id=32245
Reviewed-by: Simon McVittie <simon.mcvittie@collabora.co.uk>

diff --git a/configure.ac b/configure.ac
index aea975a..86e486a 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -629,19 +629,23 @@ AC_CHECK_DECLS([MSG_NOSIGNAL], [], [], [[ #include <sys/socket.h> ]])
 
 dnl check for flavours of varargs macros (test from GLib)
 AC_MSG_CHECKING(for ISO C99 varargs macros in C)
-AC_TRY_COMPILE([],[
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[
 int a(int p1, int p2, int p3);
 #define call_a(...) a(1,__VA_ARGS__)
 call_a(2,3);
-],dbus_have_iso_c_varargs=yes,dbus_have_iso_c_varargs=no)
+]])],
+[dbus_have_iso_c_varargs=yes],
+[dbus_have_iso_c_varargs=no])
 AC_MSG_RESULT($dbus_have_iso_c_varargs)
 
 AC_MSG_CHECKING(for GNUC varargs macros)
-AC_TRY_COMPILE([],[
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[
 int a(int p1, int p2, int p3);
 #define call_a(params...) a(1,params)
 call_a(2,3);
-],dbus_have_gnuc_varargs=yes,dbus_have_gnuc_varargs=no)
+]])],
+[dbus_have_gnuc_varargs=yes],
+[dbus_have_gnuc_varargs=no])
 AC_MSG_RESULT($dbus_have_gnuc_varargs)
 
 dnl Output varargs tests