From 2feea9b2f6589744d30ae103a95672da09bb1ec2 Mon Sep 17 00:00:00 2001
From: "Todd C. Miller" <Todd.Miller@sudo.ws>
Date: Thu, 16 Feb 2023 09:46:07 -0700
Subject: [PATCH] Allow configure.ac to be processed by autoconf 2.69.
 AC_PROG_CC_STDC is deprecated in autoconf 2.70 and above but it is necessary
 for autoconf 2.69.

---
 configure    | 4 +++-
 configure.ac | 5 ++++-
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/configure b/configure
index 221d69bcc..5337714e3 100755
--- a/configure
+++ b/configure
@@ -18851,6 +18851,7 @@ then :
 
 fi
 
+
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for an ANSI C-conforming const" >&5
 printf %s "checking for an ANSI C-conforming const... " >&6; }
 if test ${ac_cv_c_const+y}
@@ -22264,7 +22265,8 @@ fi
 
 else case e in #(
   e)
-																					     ;;
+																						:
+	     ;;
 esac
 fi
 
diff --git a/configure.ac b/configure.ac
index ab9b0953e..06a298652 100644
--- a/configure.ac
+++ b/configure.ac
@@ -17,7 +17,7 @@ dnl WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 dnl ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 dnl OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 dnl
-AC_PREREQ([2.70])
+AC_PREREQ([2.69])
 AC_INIT([sudo], [1.9.13], [https://bugzilla.sudo.ws/], [sudo])
 AC_CONFIG_HEADERS([config.h pathnames.h])
 AC_CONFIG_SRCDIR([src/sudo.c])
@@ -2383,7 +2383,9 @@ AS_IF([test -n "$with_libraries"], [
 
 dnl
 dnl C compiler checks (to be done after os checks)
+dnl AC_PROG_CC_STDC is deprecated in autoconf 2.70 and above.
 dnl
+m4_case(m4_defn([AC_AUTOCONF_VERSION]), [2.69*], [AC_PROG_CC_STDC])
 AC_C_CONST
 AC_C_INLINE
 AC_C_VOLATILE
@@ -2676,6 +2678,7 @@ AC_CHECK_FUNCS([getgrouplist], [], [
 		dnl	AC_DEFINE([HAVE___NSS_INITF_GROUP])
 		dnl    ])
 		dnl])
+		:
 	    ])
 	])
 	;;