iglupkg/iglupkg.sh

#!/bin/sh
set -e

export HOST_ARCH=$(uname -m)

if uname -o | grep GNU >/dev/null; then
	export HOST_TRIPLE="$HOST_ARCH-unknown-linux-gnu"
else
	export HOST_TRIPLE="$HOST_ARCH-unknown-linux-musl"
fi

command -V bad > /dev/null 2> /dev/null || bad() {
	shift
	"$@"
}

bad --gmake command -V gmake > /dev/null 2> /dev/null || gmake() {
	make "$@"
}

usage() {
	echo "usage: $(basename $0) [fbp]"
	exit 1
}

fatal() {
	echo "ERROR: $@"
	exit 1
}

warn() {
	echo "WARNING: $@"
}

to_run=
while [ ! -z "$1" ]; do
	case "$1" in
		--with-cross=*)
			ARCH=$(echo "$1" | cut -d'=' -f2)
			[ -z "$ARCH" ] && fatal '--with-cross=<arch> requires an argument'
			echo "INFO: cross compiling for $ARCH"
			WITH_CROSS="$ARCH"
			;;
		--with-cross)
			fatal '--with-cross=<arch> requires an argument'
			;;
		--with-cross-dir=*)
			WITH_CROSS_DIR=$(echo "$1" | cut -d'=' -f2)
			[ -z "$WITH_CROSS_DIR" ] && fatal '--with-cross-dir=<sysroot> requires an argument'
			[ -d "$WITH_CROSS_DIR" ] 2>/dev/null || warn "$WITH_CROSS_DIR does not exist"
			echo "INFO: using toolchain libraries from $WITH_CROSS_DIR"
			;;
		--with-cross-dir)
			fatal '--with-cross-dir=<sysroot> requires an argument'
			;;
		--for-cross)
			echo 'INFO: for cross'
			FOR_CROSS=1
			;;
		--for-cross-dir=*)
			FOR_CROSS_DIR_SET=1
			FOR_CROSS_DIR=$(echo "$1" | cut -d'=' -f2)
			#[ -z "$FOR_CROSS_DIR" ] && fatal '--for-cross-dir=<sysroot> requires an argument'
			echo "INFO: packaging for prefix $FOR_CROSS_DIR"
			;;
		--for-cross-dir)
			fatal '--for-cross-dir=<sysroot> requires an argument'
			;;
		--no-ext)
		-n)
			NOEXT=1
			;;
		fbp)
			to_run="f b p"
			;;
		fb)
			to_run="f b"
			;;
		f)
			to_run="f"
			;;
		bp)
			to_run="b p"
			;;
		b)
			to_run="b"
			;;
		p)
			to_run="p"
			;;
		*)
			fatal "invalid argument $1"
			;;
	esac
	shift
done

[ -z "$WITH_CROSS_DIR" ] && WITH_CROSS_DIR=/usr/$ARCH-linux-musl
[ -z "$FOR_CROSS_DIR_SET" ] && FOR_CROSS_DIR=/usr/$ARCH-linux-musl

if [ -z "$ARCH" ]; then
	export ARCH=$HOST_ARCH
fi

if [ ! -z "$FOR_CROSS" ]; then
	cross=-$ARCH
fi
export TRIPLE="$ARCH-unknown-linux-musl"
[ -z "$CC" ] && export CC=cc
[ -z "$CXX" ] && export CXX=c++
export AR=ar
export RANLIB=ranlib
export CROSS_EXTRA_LDFLAGS="--target=$TRIPLE --sysroot=$WITH_CROSS_DIR"
export CFLAGS="-O3"
export CROSS_EXTRA_CFLAGS="--target=$TRIPLE --sysroot=$WITH_CROSS_DIR"
export CXXFLAGS=$CFLAGS
export CROSS_EXTRA_CXXFLAGS="$CROSS_EXTRA_CFLAGS -nostdinc++ -isystem $WITH_CROSS_DIR/include/c++/v1/"

auto_cross() {
	if [ -z "$FOR_CROSS" ]; then
		PREFIX=/usr
	else
		PREFIX=$FOR_CROSS_DIR
	fi
	[ -z "$WITH_CROSS" ] && return
	export CFLAGS="$CFLAGS $CROSS_EXTRA_CFLAGS"
	export CXXFLAGS="$CFLAGS $CROSS_EXTRA_CXXFLAGS"
	export LDFLAGS="$CROSS_EXTRA_LDFLAGS"
}

export JOBS=$(nproc)

[ -f build.sh ] || fatal 'build.sh not found'

. ./build.sh

if command -V iglu 2>/dev/null; then
	missing=""
	
	missing=$(echo $mkdeps | tr ":" "\n" | while read mkdep; do \
		iglu has $mkdep || echo " $mkdep"; done)
	[ ! -z "$missing" ] && fatal "missing make dependencies: $missing"
	
	missing=$(echo $deps | tr ":" "\n" | while read dep; do \
		iglu has $dep || echo " $dep"; done)
	[ ! -z "$missing" ] && fatal "missing runtime dependencies: $missing"
fi

srcdir="$(pwd)/src"
outdir="$(pwd)/out"
pkgdir="$(pwd)/out/$pkgname$cross.$pkgver"

[ -d "$pkgdir" ] || warn "package already built. Pass f b or p."

_genmeta() {
	echo "[pkg]"
	if [ ! -z $@ ]; then
		echo "pkgname=$pkgname-$@"
	else
		echo "pkgname=$pkgname"
	fi
	echo "pkgver=$pkgver"
	echo "deps=$deps"
	echo ""
	echo "[license]"
	license
	echo ""
	echo "[backup]"
	backup
	echo ""
	echo "[fs]"

	if [ ! -z $@ ]; then
		cd "$pkgdir-$@"
	else
		cd "$pkgdir"
	fi
	find *
	cd "$srcdir"
}

_f() {
	echo "fetching $pkgname"
	
	rm -rf "$pkgdir"
	rm -rf "$srcdir"
	mkdir -p "$srcdir"
	cd "$srcdir"
	fetch
	cd "$srcdir"
	:> .fetched
}

_b() {
	echo "building $pkgname"
	
	rm -rf "$pkgdir"
	cd "$srcdir"
	[ -f .fetched ] || fatal 'must fetch before building'
	MAKEFLAGS=-j"$JOBS" SAMUFLAGS=-j"$JOBS" build
	cd "$srcdir"
	:> .built
}

_p() {
	echo "packaging $pkgname"
	
	rm -rf "$pkgdir"
	cd "$srcdir"
	[ -f .built ] || fatal 'must build before packaging'
	
	mkdir -p "$pkgdir"
	package
	install -d "$pkgdir/usr/share/iglupkg/"
	cd "$srcdir"
	_genmeta > "$pkgdir/usr/share/iglupkg/$pkgname$cross"
	cd "$pkgdir"
	if command -V zstd; then
		tar --owner=0 --group=0 -cf ../$pkgname$cross.$pkgver.tar.zst * -I zstd
	else
		tar --owner=0 --group=0 -cf ../$pkgname$cross.$pkgver.tar *
	fi
	
	if [ $ext ] && [ ! -z $NOEXT ]; then
		echo "$ext" | tr ":" "\n" | while read e; do
			echo "packaging $pkgname-$e"
			
			cd "$srcdir"
			mkdir -p "$pkgdir-$e"
			package_$(echo $e | tr "-" "_")
			
			install -d "$pkgdir-$e/usr/share/iglupkg/"
			cd "$srcdir"
			_genmeta $e > "$pkgdir-$e/usr/share/iglupkg/$pkgname$cross"
			cd "$pkgdir-$e"
			if command -V zstd; then
				tar --owner=0 --group=0 -cf ../$pkgname-$e$cross.$pkgver.tar.zst * -I zstd
			else
				tar --owner=0 --group=0 -cf ../$pkgname-$e$cross.$pkgver.tar *
			fi
	fi
}

if [ -z "$to_run" ]; then
	[ -f "$srcdir/.fetched" ] || _f
	[ -f "$srcdir/.built" ] || _b
	[ -d "$pkgdir" ] || _p
else
	set -- $to_run

	while [ ! -z "$1" ]; do
		_"$1"
		shift
	done
fi