File build/prep.sh artifact 317dfaf547 part of check-in d516625f90

#! /bin/sh

# 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

rm -f libconfig.vers
make -f Makefile.in libconfig.vers

# 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