@@ -1,4 +1,32 @@
 #! /bin/sh
 
-autoconf; autoheader
-rm -rf autom4te.cache *~
+# Download latest copy of autoconf macros
+(
+	mkdir aclocal >/dev/null 2>/dev/null
+	cd aclocal || exit 1
+
+	for file in optarg.m4 shobj.m4 versionscript.m4; do
+		rm -f "${file}"
+
+		wget -O "${file}.new" "http://rkeene.org/devel/autoconf/${file}" || continue
+
+		mv "${file}.new" "${file}"
+	done
+)
+
+for file in config.guess config.sub install-sh; do
+	rm -f "${file}"
+done
+
+aclocal -I aclocal
+autoconf
+automake -fca
+
+rm -rf autom4te.cache
+
+# Add Linux/MUSL support if missing
+if ! grep '[-]musl' config.sub >/dev/null 2>/dev/null; then
+	sed 's@\(-*\)linux-gnu\* @\1linux-musl | &@g' config.sub > config.sub.new
+	cat config.sub.new > config.sub
+	rm -f config.sub.new
+fi