patch 9.0.1823: Autoconf 2.69 too old
Problem: Autoconf 2.69 too old
Solution: Migrate to Autoconf 2.71
Autoconf 2.69 is almost 10 years old. And 2.71 is also a few years old
as well. Should be pretty well tested by now. It brings a lot of
improvements and there seems to be an ongoing work on autoconf 2.72
already.
This change just addresses two minor changes `autoupdate` suggested, and
then `src/auto/configure` is regenerated by running
cd src
make AUTOCONF=autoconf2.71 autoconf
closes: #12958
Signed-off-by: Christian Brabandt <cb@256bit.org>
Co-authored-by: Illia Bobyr <illia.bobyr@gmail.com>
diff --git a/src/configure.ac b/src/configure.ac
index 445ab21..1a4dd5c 100644
--- a/src/configure.ac
+++ b/src/configure.ac
@@ -1,8 +1,6 @@
dnl configure.ac: autoconf script for Vim
-dnl Process this file with autoconf 2.69 to produce "configure".
-dnl This should also work with other versions of autoconf, but 2.70 and later
-dnl generate lots of hard to fix "obsolete" warnings.
+dnl Process this file with autoconf 2.71 to produce "configure".
AC_INIT
AC_CONFIG_SRCDIR([vim.h])
@@ -13,7 +11,7 @@
AC_PROG_MAKE_SET
dnl Checks for programs.
-AC_PROG_CC_C99 dnl required by almost everything
+AC_PROG_CC dnl required by almost everything
AC_PROG_CPP dnl required by header file checks
AC_PROG_EGREP dnl required by AC_EGREP_CPP
AC_PROG_FGREP dnl finds working grep -F