# Contributor: Jakub Jirutka <jakub@jirutka.cz>
# Maintainer: Jakub Jirutka <jakub@jirutka.cz>

# Note: This software is total mess and it seems to be nearly impossible to
#   create a clean distribution package.
pkgname=emscripten
# Keep with sync with pkg emscrypten-fastcomp!
pkgver=1.37.9
pkgrel=0
pkgdesc="An LLVM-to-JavaScript Compiler"
url="https://kripken.github.io/emscripten-site/"
arch="all"
license="MIT UOI-NCSA"
depends="$pkgname-optimizer=$pkgver-r$pkgrel emscripten-fastcomp>=$pkgver
	nodejs python2"
makedepends="cmake clang"
subpackages="$pkgname-optimizer"
source="$pkgname-$pkgver.tar.gz::https://github.com/kripken/$pkgname/archive/$pkgver.tar.gz
	fix-python-shebang.patch
	settings_template-paths.patch
	add-system-level-config.patch
	move-emcc-txt.patch
	emscripten.cfg"
builddir="$srcdir/$pkgname-$pkgver"

build() {
	cd "$builddir"/tools/optimizer

	cmake \
		-DCMAKE_BUILD_TYPE=Release \
		-DCMAKE_INSTALL_PREFIX=/usr \
		-DCMAKE_CXX_FLAGS="$CXXFLAGS" \
		-DCMAKE_C_FLAGS="$CFLAGS" \
		-DCMAKE_C_COMPILER=clang \
		-DCMAKE_VERBOSE_MAKEFILE=ON
	make
}

check() {
	cd "$builddir"

	sed "s|/usr/share/emscripten|$builddir|" "$srcdir"/emscripten.cfg \
		> tests/.emscripten

	./emcc --em-config tests/.emscripten \
		--cache "$srcdir"/.cache \
		-o tests/hello_world.js tests/hello_world.c
	node tests/hello_world.js
}

package() {
	local destdir="$pkgdir/usr/share/$pkgname"
	local name

	mkdir -p "$destdir"
	cp -r "$builddir"/* "$destdir"/

	cd "$destdir"

	# This is read from emcc.py for --help.
	cp site/build/text/docs/tools_reference/emcc.txt .

	find . -name "*.bat" -delete
	rm -r docs   # there are only few PDFs and TeX sources
	rm -r media  # media for website
	rm -r site   # a website (?)
	rm -r tests  # looks more like a dump of random sources than decent tests
	rm -r third_party  # bundled stuff
	rm -r tools/optimizer  # we've already built it
	rm AUTHORS LICENSE *.md *.markdown package.json
	rm system/lib/build_cxx_natively.sh

	mkdir -p "$pkgdir"/usr/bin
	for name in  em++ em-config emar embuilder.py emcc emcmake \
		emconfigure emlink.py emmake emrun emscons
	do
		ln -s ../share/$pkgname/$name "$pkgdir"/usr/bin/$name
	done

	install -D -m 644 "$srcdir"/emscripten.cfg "$pkgdir"/etc/emscripten.cfg
}

optimizer() {
	pkgdesc="Emscripten's optimizer for asm.js code"
	depends=""

	install -D -m 755 "$builddir"/tools/optimizer/optimizer \
		"$subpkgdir"/usr/bin/emoptimizer
}

sha512sums="0efd9035d3dce0726025b5b8e30129885eef30f915c502b8957150e4ffc11fd0e9a2b605854cdf69ca3eb05e5102bf34341b7edd2116f5fa29fd170a28e7f07f  emscripten-1.37.9.tar.gz
a61e172ced6b72adb53a840255a9753905a0c7a1c9f8965345781b9cdcc8a596c4dc88f036e91bd5c05d8b3eb2908bbb7d991c4e1abcf35a46be67b9765e546a  fix-python-shebang.patch
ec0dc4a5c562fb85d861c37f5b3168351921dfd7865754ff117f757f15c45ec4474c56b71cd6f50beed71d91a270f3c7ad9d27db205be8eb6637b72b0c9fca8a  settings_template-paths.patch
10a7a545f468a5f71fdf1cca0e0be983db5d21387202b851bd11f811c2a0a74f4e4c8733ae9ff933df4ea49c3f5e8e4e16fc3651bc98bb8c37a0828bb29eca7e  add-system-level-config.patch
6613ef4cf41bcf0ecc13a0415cdc847f4ec112f07dd19573000ea6a9a6f2360aee6b2db01f822d117d5022dc58b2421be89fe3421c46fd6857737d07ce489c1e  move-emcc-txt.patch
e485c974c465fc60ff0c81ba0a7e2c68bd2f653fff6861007d4ce29dd20c7163ba63ac1a3c449b870a8fa4642ad3ef1c8d1e6380add2db58f65553b58f626c9e  emscripten.cfg"