GNU Autoconf 2.55.

sysa/autoconf-2.55/autoconf-2.55.sh

@@ -0,0 +1,24 @@
+# SPDX-FileCopyrightText: 2021 Andrius Štikonas <andrius@stikonas.eu>
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+src_prepare() {
+    rm Makefile.in */Makefile.in */*/Makefile.in aclocal.m4 configure
+
+    autoreconf-2.54
+
+    # Install autoconf data files into versioned directory
+    for file in */*/Makefile.in */Makefile.in Makefile.in; do
+        sed -i '/^pkgdatadir/s:$:-@VERSION@:' $file
+    done
+}
+
+src_configure() {
+    ./configure --prefix="${PREFIX}" --program-suffix=-2.55
+}
+
+src_install() {
+    default_src_install
+
+    ln -sf "${PREFIX}/bin/autoconf-2.55" "${PREFIX}/bin/autoconf"
+}

sysa/run.sh

@@ -111,6 +111,8 @@ build autoconf-2.54 stage2.sh
 
 build automake-1.7 stage2.sh
 
+build autoconf-2.55
+
 build bash-3.2.57
 
 exec bash run2.sh