Autoconf 2.12.

SHA256SUMS.sources

@@ -1,3 +1,4 @@
+66fde474e124e80c843560041cd68820c9dce56e696f388312ba30361a814a16  autoconf-2.12.tar.gz
 f0611136bee505811e9ca11ca7ac188ef5323a8e2ef19cffd3edb3cf08fd791e  autoconf-2.13.tar.gz
 534e99b61b81e79327b6d08f1a3edb0755ac246e1249009b0e1bf5887b60d7a9  autoconf-2.52.tar.gz
 503cdc2b0992a4309545d17f462cb15f99bb57b7161dfc4082b2e7188f2bcc0f  automake-1.4-p6.tar.gz

parts.rst

@@ -387,3 +387,8 @@ autoconf 2.13
 =============
 
 Different versions of autotools are not fully compatible, so build older ``autoconf`` too.
+
+autoconf 2.12
+=============
+
+Yet another old autoconf version that we will need for GNU Binutils.

rootfs.sh

@@ -210,6 +210,9 @@ get_file https://ftp.gnu.org/gnu/automake/automake-1.4-p6.tar.gz
 # autoconf 2.13
 get_file https://ftp.gnu.org/gnu/autoconf/autoconf-2.13.tar.gz
 
+# autoconf 2.12
+get_file https://ftp.gnu.org/gnu/autoconf/autoconf-2.12.tar.gz
+
 # General cleanup
 find tmp -name .git -exec rm -rf \;
 

sysa/autoconf-2.12/autoconf-2.12.sh

@@ -0,0 +1,14 @@
+# SPDX-FileCopyrightText: 2021 Andrius Štikonas <andrius@stikonas.eu>
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+src_prepare() {
+    rm configure
+    autoconf-2.52
+
+    sed -i '/^acdatadir/s:$:-2.12:' Makefile.in
+}
+
+src_configure() {
+    ./configure --prefix=${PREFIX} --program-suffix=-2.12
+}

sysa/run.sh

@@ -77,4 +77,6 @@ build autoconf-2.52 stage2.sh
 
 build autoconf-2.13
 
+build autoconf-2.12
+
 echo "Bootstrapping completed."