From 9e59aa1bc8c4d215ea3e05eafec7181747206f67 Mon Sep 17 00:00:00 2001
From: Jameson Nash <vtjnash@gmail.com>
Date: Tue, 19 Apr 2022 11:16:25 -0400
Subject: [PATCH] release: check versions of autogen scripts are newer (#3554)

Use libtoolize --force to ensure it updates m4 directory with the
latest files. Add an option "release" to the autogen.sh script that
checks the versions of the input tools, so that we know they are always
using the latest version for each release.
---
 autogen.sh                 | 35 ++++++++++++++++++++++++++++++++---
 m4/libuv-check-versions.m4 |  7 +++++++
 2 files changed, 39 insertions(+), 3 deletions(-)
 create mode 100644 m4/libuv-check-versions.m4

diff --git a/autogen.sh b/autogen.sh
index 271c2ee8..bfd8f3e6 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -14,9 +14,16 @@
 # ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
+set -eu
 cd `dirname "$0"`
 
-if [ "$LIBTOOLIZE" = "" ] && [ "`uname`" = "Darwin" ]; then
+if [ "${1:-dev}" == "release" ]; then
+    export LIBUV_RELEASE=true
+else
+    export LIBUV_RELEASE=false
+fi
+
+if [ "${LIBTOOLIZE:-}" = "" ] && [ "`uname`" = "Darwin" ]; then
   LIBTOOLIZE=glibtoolize
 fi
 
@@ -25,9 +32,17 @@ AUTOCONF=${AUTOCONF:-autoconf}
 AUTOMAKE=${AUTOMAKE:-automake}
 LIBTOOLIZE=${LIBTOOLIZE:-libtoolize}
 
+aclocal_version=`"$ACLOCAL" --version | head -n 1 | sed 's/[^.0-9]//g'`
+autoconf_version=`"$AUTOCONF" --version | head -n 1 | sed 's/[^.0-9]//g'`
 automake_version=`"$AUTOMAKE" --version | head -n 1 | sed 's/[^.0-9]//g'`
 automake_version_major=`echo "$automake_version" | cut -d. -f1`
 automake_version_minor=`echo "$automake_version" | cut -d. -f2`
+libtoolize_version=`"$LIBTOOLIZE" --version | head -n 1 | sed 's/[^.0-9]//g'`
+
+if [ $aclocal_version != $automake_version ]; then
+    echo "FATAL: aclocal version appears not to be from the same as automake"
+    exit 1
+fi
 
 UV_EXTRA_AUTOMAKE_FLAGS=
 if test "$automake_version_major" -gt 1 || \
@@ -39,8 +54,22 @@ fi
 echo "m4_define([UV_EXTRA_AUTOMAKE_FLAGS], [$UV_EXTRA_AUTOMAKE_FLAGS])" \
     > m4/libuv-extra-automake-flags.m4
 
-set -ex
-"$LIBTOOLIZE" --copy
+(set -x
+"$LIBTOOLIZE" --copy --force
 "$ACLOCAL" -I m4
+)
+if $LIBUV_RELEASE; then
+  "$AUTOCONF" -o /dev/null m4/libuv-check-versions.m4
+  echo "
+AC_PREREQ($autoconf_version)
+AC_INIT([libuv-release-check], [0.0])
+AM_INIT_AUTOMAKE([$automake_version])
+LT_PREREQ($libtoolize_version)
+AC_OUTPUT
+" > m4/libuv-check-versions.m4
+fi
+(
+set -x
 "$AUTOCONF"
 "$AUTOMAKE" --add-missing --copy
+)
diff --git a/m4/libuv-check-versions.m4 b/m4/libuv-check-versions.m4
new file mode 100644
index 00000000..a280596d
--- /dev/null
+++ b/m4/libuv-check-versions.m4
@@ -0,0 +1,7 @@
+
+AC_PREREQ(2.71)
+AC_INIT([libuv-release-check], [0.0])
+AM_INIT_AUTOMAKE([1.16.5])
+LT_PREREQ(2.4.6)
+AC_OUTPUT
+