# Contributor: William Pitcock <nenolod@dereferenced.org>
# Maintainer: William Pitcock <nenolod@dereferenced.org>
pkgname=llvm
pkgver=3.5.0
pkgrel=0
pkgdesc="low level virtual machine compiler system"
arch="x86 x86_64 armhf"
url="http://llvm.org/"
license="UOI-NCSA"
depends=
depends_dev="perl"
makedepends="$depends_dev groff libffi-dev python chrpath"
install=
subpackages="clang $pkgname-dev $pkgname-doc $pkgname-libs"
source="http://llvm.org/releases/$pkgver/llvm-$pkgver.src.tar.xz
	http://llvm.org/releases/$pkgver/cfe-$pkgver.src.tar.xz
	llvm-alpine-linux.patch
	llvm-musl.patch
	"

# clang hardcodes linker paths; and don't know of a fix like the --with-dynamic-linker
# patch we use for gcc. So llvm-3.2-alpine-linux.patch needs to be updated if/when the
# uClibc ABI version (as of uClibc 0.9.33.2, this is 0.9.32) increases.

_builddir="$srcdir"/build
_srcdir="$srcdir"/"$pkgname-$pkgver.src"

prepare() {
	msg "Preparing CLANG sources..."
	mv "$srcdir"/cfe-$pkgver.src \
		"$srcdir"/$pkgname-$pkgver.src/tools/clang || return 1

	msg "Patching LLVM core..."
	cd "$srcdir"/$pkgname-$pkgver.src || return 1
	update_config_sub || return 1
	for i in $source; do
		case $i in
		*.patch)
			msg "Applying $i..."
			patch -s -p1 -N -i "$srcdir"/$i || return 1
			;;
		esac
	done
	# fails to link
	rm ./unittests/Support/formatted_raw_ostream_test.cpp
}

build() {
	mkdir "$_builddir"
	cd "$_builddir"

	export CBUILD
	sed -i -e '/case "\${UNAME_MACHINE}:\${UNAME_SYSTEM}:\${UNAME_RELEASE}:\${UNAME_VERSION}" in/i \' \
	        -e 'if [ x != "x$CBUILD" ]; then echo "$CBUILD"; exit; fi' \
		../$pkgname-$pkgver.src/autoconf/config.guess \
		|| return 1

	$_srcdir/configure \
		--build=$CBUILD \
		--host=$CHOST \
		--prefix=/usr \
		--sysconfdir=/etc \
		--mandir=/usr/share/man \
		--infodir=/usr/share/info \
		--enable-ffi \
		--enable-shared \
		--enable-optimized \
		|| return 1

	# configure gets it wrong. We do have error_t
	sed -i -e 's/.*undef HAVE_ERROR_T.*/#define HAVE_ERROR_T 1/'  \
		-e '/define error_t/d' \
		./include/llvm/Config/config.h || return 1

	make || return 1
}

package() {
	cd "$_builddir"
	make DESTDIR="$pkgdir" install

	#relocate docs
	mkdir -p "$pkgdir"/usr/share/doc
	mv "$pkgdir"/usr/docs/llvm "$pkgdir"/usr/share/doc/ || return 1
	rmdir "$pkgdir"/usr/docs || return 1
	chrpath -d "$pkgdir"/usr/bin/* "$pkgdir"/usr/lib/*.so
}

clang() {
	pkgdesc="A C language family front-end for LLVM"
	mkdir -p "$subpkgdir"/usr/bin \
		"$subpkgdir"/usr/lib "$subpkgdir"/usr/share/clang
	mv "$pkgdir"/usr/bin/clang* "$pkgdir"/usr/bin/c-index-test \
		"$subpkgdir"/usr/bin/ || return 1
	mv "$pkgdir"/usr/lib/clang \
		"$pkgdir"/usr/lib/libclang.so \
		"$subpkgdir"/usr/lib/ || return 1
	cp -r "$_srcdir"/tools/clang/tools/scan-build "$subpkgdir"/usr/share/clang/scan-build
	cp -r "$_srcdir"/tools/clang/tools/scan-view "$subpkgdir"/usr/share/clang/scan-view

	ln -s /usr/share/clang/scan-build/scan-build "$subpkgdir"/usr/bin/scan-build
	ln -s /usr/share/clang/scan-view/scan-view "$subpkgdir"/usr/bin/scan-view
}

libs() {
	pkgdesc="LLVM shared libraries"
	mkdir -p "$subpkgdir"/usr/lib/
	mv "$pkgdir"/usr/lib/*.so "$subpkgdir"/usr/lib/
}

md5sums="d6987305a1a0e58e128c1374cd3b8fef  llvm-3.5.0.src.tar.xz
27718dd13c7df83e15f997116bbb4aef  cfe-3.5.0.src.tar.xz
6027b00815344fe834e3e3208fc471d9  llvm-alpine-linux.patch
832e665e4972afb94fb6c976a7e35c69  llvm-musl.patch"
sha256sums="28e199f368ef0a4666708f31c7991ad3bcc3a578342b0306526dd35f07595c03  llvm-3.5.0.src.tar.xz
fc80992e004b06f6c7afb612de1cdaa9ac9d25811c55f94fcf7331d9b81cdb8b  cfe-3.5.0.src.tar.xz
789ae8672503be241ef371933795cee148cbc16c3b633c37344ea7b4aef89189  llvm-alpine-linux.patch
1e4c4d9e2d76719c2fedc6fe1ce03e59a16521bdb2562e84255a82d510a4f894  llvm-musl.patch"
sha512sums="b4d0f325dbdb0a8f10e5fd031954ef4b1971d8f99f4e4b53834801a2b74a7acde3f77c655c8355b407424b363edfb10f71d85fc370356dc52af5c636a1bba197  llvm-3.5.0.src.tar.xz
b26a5e2cd81c150607c23b22fafc0d9c7f12b83b45e476b8e75bf5e99d42be7c98ffeac7349df664f01b00900864a01429860b298e48961861377a4b2daf3e49  cfe-3.5.0.src.tar.xz
65a74090d6541e105220e79944181dca15aca258178a755ac42b7066277202b59836998a27856bab57cf76200a4e538124a6110ea8bcdc15b0abf2508a6e681d  llvm-alpine-linux.patch
e9531f86521628a1f0b73e15da55c6d51c7283a0239bc481b89a73c5195ae605b6680e75cbcd9197b71ceab534082f86e0e4d39701edcbe9195cc01df97285b9  llvm-musl.patch"