Add bison 2.3

This is required for perl 5.10.1.

sysa/bison-2.3/bison-2.3.sh

@@ -0,0 +1,32 @@
+# SPDX-FileCopyrightText: 2021 fosslinux <fosslinux@aussies.space>
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+src_prepare() {
+    default
+
+    ../../import-gnulib.sh
+
+    AUTOPOINT=true autoreconf-2.65 -fi
+
+    # Remove pregenerated files
+    rm src/parse-gram.c src/parse-gram.h src/scan-skel.c src/scan-gram.c
+
+    # Remove pregenerated .info
+    rm doc/bison.info
+}
+
+src_configure() {
+    LEX=flex-2.5.33 ./configure \
+        --prefix="${PREFIX}" \
+        --program-suffix=-2.3 \
+        --datarootdir="${PREFIX}/share/bison-2.3"
+}
+
+src_compile() {
+    make MAKEINFO=true
+}
+
+src_install() {
+    make MAKEINFO=true DESTDIR="${DESTDIR}" install
+}