# Contributor: William Pitcock <nenolod@dereferenced.org>
# Maintainer: William Pitcock <nenolod@dereferenced.org>
pkgname=llvm
pkgver=3.2
pkgrel=4
pkgdesc="low level virtual machine compiler system"
arch="x86 x86_64"
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-$pkgver.src.tar.gz
	http://llvm.org/releases/$pkgver/clang-$pkgver.src.tar.gz
        llvm-3.2-alpine-linux.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() {
	mkdir "$_builddir"

	msg "Preparing CLANG sources..."

	mv "$srcdir"/clang-$pkgver.src \
		"$srcdir"/$pkgname-$pkgver.src/tools/clang || return 1

	msg "Patching LLVM core..."

	cd "$srcdir"/$pkgname-$pkgver.src || 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
}

build() {
	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 \
		../$pkgname-$pkgver.src/projects/sample/autoconf/config.guess \
		|| return 1

	$_srcdir/configure \
		--prefix=/usr \
		--sysconfdir=/etc \
		--mandir=/usr/share/man \
		--infodir=/usr/share/info \
		--enable-ffi  \
		--enable-shared \
		|| 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="71610289bbc819e3e15fdd562809a2d7  llvm-3.2.src.tar.gz
3896ef4334df08563b05d0848ba80582  clang-3.2.src.tar.gz
3014842ee498ffe044773ef3a7f859ca  llvm-3.2-alpine-linux.patch"
sha256sums="125090c4d26740f1d5e9838477c931ed7d9ad70d599ba265f46f3a42cb066343  llvm-3.2.src.tar.gz
2aaaf03f7c0f6b16fe97ecc81247dc2bf2d4bec7620a77cc74670b7e07ff5658  clang-3.2.src.tar.gz
0496f84b97131b393662f4031bf7e117caaa29702bea569e8d4d783093c3067f  llvm-3.2-alpine-linux.patch"
sha512sums="cc66171322dbbe40bcac0e0ea5b09df8ff52df63ded304f841f32f702270d6ab1512216413ee52498c3ebee8cd39c4cd23e3855d591944bc2ac0ae76f5be62cc  llvm-3.2.src.tar.gz
99fc57d19b76c42af9821eaaa762056a926eb68178f6b7dd5e8bf092c9ee201a554b91d760d5a30a57f38102eae340e080ef8c6a39327f6881eda391b20b108d  clang-3.2.src.tar.gz
3878cfff1ab702c275d47b831751d87b2a112223ea6fe1fcc30e5f8e06b2fedf4f07b8ca9c65b3e6ac35dc6feba8d91a8b0579f9b2fe194ccdb202c2b9338640  llvm-3.2-alpine-linux.patch"