# Contributor: Travis Tilley <ttilley@gmail.com>
# Maintainer: William Pitcock <nenolod@dereferenced.org>
pkgname=llvm
pkgver=3.6.0
pkgrel=1
pkgdesc="low level virtual machine compiler system"
arch="x86_64 armhf"
url="http://llvm.org/"
license="UOI-NCSA"
depends=""
depends_dev="perl"
makedepends="$depends_dev make flex bison groff libffi-dev zlib-dev ncurses-dev libedit-dev python chrpath"
install=
subpackages="clang-libs:clang_libs clang
	$pkgname-static $pkgname-dev $pkgname-doc $pkgname-libs"
source="http://llvm.org/releases/$pkgver/llvm-$pkgver.src.tar.xz
	http://llvm.org/releases/$pkgver/cfe-$pkgver.src.tar.xz
	http://llvm.org/releases/$pkgver/compiler-rt-$pkgver.src.tar.xz
	llvm-3.5-gcc-4.9.patch
	llvm-3.6-musl-triple.patch
	llvm-3.6-musl.patch
	compiler-rt-3.6-musl-disable-sanitizers.patch
	compiler-rt-3.6-musl-no-dlvsym.patch
  clang-3.5-fix-stdint.patch
	clang-3.6-fix-unwind-chain-inclusion.patch
	clang-3.6-remove-lgcc-when-using-compiler-rt.patch
  clang-3.6-add-alpine-distro.patch
  clang-3.6-alpine-use-z-relro.patch
	clang-3.6-alpine-hash-style-gnu.patch
	clang-3.6-default-runtime-compiler-rt.patch
  clang-3.6-musl-alpine-triple.patch
  clang-3.6-musl-fix-dynamic-linker-paths.patch
  clang-3.6-musl-use-init-array.patch
	clang-3.6-musl-no-use-cxa-atexit.patch
	"

_builddir="$srcdir"/build

_srcdir="$srcdir"/"$pkgname-$pkgver.src"
_srcdir_clang="$_srcdir"/tools/clang
_srcdir_compiler_rt="$_srcdir"/projects/compiler-rt
# _srcdir_clang_extra="$_srcdir_clang"/tools/extra
# _srcdir_lld="$_srcdir"/tools/lld

prepare() {
	msg "Preparing LLVM/CLANG sources..."
	mv "$srcdir"/cfe-$pkgver.src \
	  "$_srcdir_clang" || return 1
	mv "$srcdir"/compiler-rt-$pkgver.src \
	  "$_srcdir_compiler_rt" || return 1
	# mv "$srcdir"/clang-tools-extra-$pkgver.src \
	#   "$_srcdir_clang_extra" || return 1
	# mv "$srcdir"/lld-$pkgver.src \
	#   "$_srcdir_lld" || return 1

	msg "Patching LLVM core..."
	cd "$_srcdir" || return 1
	update_config_sub || return 1
	for i in $source; do
		case $i in
		llvm*.patch)
			msg "Applying $i..."
			patch -s -p1 -N -i "$srcdir"/$i || return 1
			;;
		esac
	done

  msg "Patching compiler-rt..."
	cd "$_srcdir_compiler_rt" || return 1
	for i in $source; do
		case $i in
		compiler-rt*.patch)
		  msg "Applying $i..."
			patch -s -p1 -N -i "$srcdir"/$i || return 1
			;;
		esac
	done

	msg "Patching clang..."
	cd "$_srcdir_clang" || return 1
	for i in $source; do
		case $i in
		clang-*.patch)
		  msg "Applying $i..."
			patch -s -p1 -N -i "$srcdir"/$i || return 1
			;;
		esac
	done
}

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

	export CPPFLAGS="${CPPFLAGS} $(pkg-config --cflags-only-I libffi) $(pkg-config --cflags-only-I libedit)"

	$_srcdir/configure \
		--build=$CBUILD \
		--host=$CHOST \
		--prefix=/usr \
		--sysconfdir=/etc \
		--mandir=/usr/share/man \
		--infodir=/usr/share/info \
		--enable-shared \
		--enable-optimized \
		--enable-keep-symbols \
		--enable-libedit \
		--enable-terminfo \
		--enable-libffi \
		--enable-clang-plugin-support \
		--enable-clang-static-analyzer \
		--enable-docs \
		--enable-threads \
		--enable-zlib \
		--enable-pic \
		--enable-targets=x86,x86_64,arm,arm64,cpp,r600 \
		--enable-bindings=none \
		--disable-timestamps \
		--disable-assertions \
		--disable-expensive-checks \
		--disable-libcpp \
		--disable-werror \
		|| 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 || return 1

	# remove erroneously installed example
	rm "$pkgdir"/usr/lib/*LLVMHello.* || return 1

	# remove executable bit from static libc
	chmod -x "$pkgdir"/usr/lib/*.a
}

clang_libs() {
	pkgdesc="Runtime library for clang"
	mkdir -p "$subpkgdir"/usr/lib
	mv "$pkgdir"/usr/lib/libclang.so "$subpkgdir"/usr/lib/
}

clang() {
	pkgdesc="A C language family front-end for LLVM"
	mkdir -p "$subpkgdir"/usr/bin \
		"$subpkgdir"/usr/lib "$subpkgdir"/usr/share/clang "$subpkgdir"/usr/include
	mv "$pkgdir"/usr/bin/clang* "$pkgdir"/usr/bin/c-index-test \
		"$subpkgdir"/usr/bin/ || return 1
	mv "$pkgdir"/usr/lib/clang \
		"$subpkgdir"/usr/lib/ || return 1
	mv "$pkgdir"/usr/include/clang "$pkgdir"/usr/include/clang-c \
		"$subpkgdir"/usr/include/ || 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
}

static() {
	pkgdesc="LLVM static libraries"
	depends=
	mkdir -p "$subpkgdir"/usr/lib
	mv "$pkgdir"/usr/lib/*.a "$subpkgdir"/usr/lib/
}

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

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cc36dbcafe43406083e98bc9e74f8054  compiler-rt-3.6.0.src.tar.xz
178eecb7554f893198716e35245fc3c9  llvm-3.5-gcc-4.9.patch
74f92f6719995be866f461a29a7c8112  llvm-3.6-musl-triple.patch
3068c2bc0dd0f694d002d992743401ac  llvm-3.6-musl.patch
b1732677fb7641c13300a98bdd47d467  compiler-rt-3.6-musl-disable-sanitizers.patch
a56d3a3da587b5936e338d85947bd16f  compiler-rt-3.6-musl-no-dlvsym.patch
be9b343bacbd220a154b0a773bcd3bd3  clang-3.5-fix-stdint.patch
02df7f41728ceb3b401dd3972531d4ec  clang-3.6-fix-unwind-chain-inclusion.patch
9790d1131f498f5957e0107727489704  clang-3.6-remove-lgcc-when-using-compiler-rt.patch
74612f41b5bda8f05be5cf2e59eebd26  clang-3.6-add-alpine-distro.patch
dbf4e6686137d097768e971c0efd4a0b  clang-3.6-alpine-use-z-relro.patch
7495743d3c85ad48fd7ab9ca1f674884  clang-3.6-alpine-hash-style-gnu.patch
a26e050907fae3f8ac51375826f9767c  clang-3.6-default-runtime-compiler-rt.patch
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b7e213b69c848ad1bcb98a798a2f9d1d  clang-3.6-musl-use-init-array.patch
01eb6923bfa059e36ab39f44b2b6f03f  clang-3.6-musl-no-use-cxa-atexit.patch"
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