#!/bin/sh
set -e
set -x
relver="1.2.2"
build_dir="/v/pub/musl"

PREFIX="$HOME/musl"

if ! [ -d "$build_dir" ] ; then
	mkdir -p "$build_dir"
fi
cd "$build_dir"

sigLoc="https://musl.libc.org/releases/musl-${relver}.tar.gz.asc"
sigFn="musl-${relver}.tar.gz.asc"
arLoc="https://musl.libc.org/releases/musl-${relver}.tar.gz"
arFn="musl-${relver}.tar.gz"

curl https://musl.libc.org/musl.pub | gpg --import

if ! [ -e "$arFn" ] ; then
	curl -o "$arFn" "$arLoc"
fi

if ! [ -e "$sigFn" ] ; then
	curl -o "$sigFn" "$sigLoc"
fi

_out="$(mktemp)";
gpg --fingerprint --verify "$sigFn" >"$_out" 2>&1
ret=$?

if [ $ret -ne 0 ] ; then
	cat "$_out"
	rm "$_out"
	echo "Bad signature"
fi

if ! grep -q '^Primary key fingerprint: 8364 8929 0BB6 B70F 99FF  DA05 56BC DB59 3020 450F' \
	< "$_out" ; then
	cat "$_out"
	rm "$_out"
	echo "Bad signature"
	exit 1
fi
rm "$_out" || printf ""

tar xzvf "$arFn"
cd "musl-${relver}"
./configure --prefix="$PREFIX" --bindir="$HOME/bin" --disable-shared \
	--enable-static
make
make install -j$(nproc)