From 7ea116c1c495cb5e148e01cac23a9ce5f3c698b6 Mon Sep 17 00:00:00 2001
From: Nexarian <cmp@pitstick.net>
Date: Mon, 27 Nov 2023 10:59:31 -0500
Subject: [PATCH] Updating autoconf

---
 configure.ac | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 5d716138..21f2844c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -12,7 +12,10 @@ AC_SUBST([package_version_patchlevel], [${package_version_patchlevel}])
 AC_CONFIG_HEADERS(config_ac.h:config_ac-h.in)
 AM_INIT_AUTOMAKE([1.11 foreign parallel-tests])
 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
-AC_PROG_CC_C99
+m4_warn([obsolete],
+[AC_PROG_CC_C99 is obsolete; use AC_PROG_CC
+])dnl
+AC_REQUIRE(AC_PROG_CC)
 AC_C_CONST
 LT_INIT