# Template file for 'rust'
pkgname=rust
version=1.28.0
revision=1
_rust_dist_version=1.27.2
_cargo_dist_version=0.29.0
# NB. if you push any(!) new version, don't forget to put a build
# output of musl to https://alpha.de.repo.voidlinux.org/distfiles/
wrksrc="rustc-${version}-src"
lib32disabled=yes
patch_args="-Np1"
build_style=configure
make_build_args="dist VERBOSE=1"
only_for_archs="i686 x86_64 x86_64-musl"
hostmakedepends="cmake curl pkg-config python"
makedepends="libffi-devel llvm ncurses-devel libxml2-devel libunwind-devel
 zlib-devel"
short_desc="Safe, concurrent, practical systems language"
maintainer="Enno Boland <gottox@voidlinux.eu>"
homepage="http://www.rust-lang.org/"
license="MIT, Apache-2.0"
distfiles="https://static.rust-lang.org/dist/rustc-${version}-src.tar.gz"
checksum=1d5a81729c6f23a0a23b584dd249e35abe9c6f7569cee967cc42b1758ecd6486

case "$XBPS_MACHINE" in
x86_64-musl)
	hostmakedepends+=" libcurl libgit2"
	distfiles+="
	 https://alpha.de.repo.voidlinux.org/distfiles/rustc-${_rust_dist_version}-x86_64-unknown-linux-musl.tar.xz
	 https://alpha.de.repo.voidlinux.org/distfiles/rust-std-${_rust_dist_version}-x86_64-unknown-linux-musl.tar.xz
	 https://alpha.de.repo.voidlinux.org/distfiles/cargo-${_cargo_dist_version}-x86_64-unknown-linux-musl.tar.gz"
	checksum+="
	 2da811f9a81f63a93d62cefe15f391efaff663438f2c364fd1a522ef576753f4
	 e18aea5529d434e0950a77c266c3230ea878e3f3ea8b4114ee5a081092f98037
	 d54f7b4c6e8af657e6173e9e0200130b2f297f365ed4c06a4e9029762d975836"
	;;
x86_64)
	# extract from src/stage0.txt
	distfiles+="
	 https://static.rust-lang.org/dist/rustc-${_rust_dist_version}-x86_64-unknown-linux-gnu.tar.gz
	 https://static.rust-lang.org/dist/rust-std-${_rust_dist_version}-x86_64-unknown-linux-gnu.tar.gz
	 https://static.rust-lang.org/dist/cargo-${_cargo_dist_version}-x86_64-unknown-linux-gnu.tar.xz"
	checksum+="
	 ec3efc17ddbe6625840957049e15ebae960f447c8e8feb7da40c28dd6adf655f
	 68984f2233853d3e9c7c56edd72a91b5822157f28fdb42023fb311af68f842dd
	 2e62f91aab9ea496209a060e7ec62f088f5081b568a28b88f3c8ea7073db9829"
	;;
i686)
	# extract from src/stage0.txt
	distfiles+="
	 https://static.rust-lang.org/dist/rustc-${_rust_dist_version}-i686-unknown-linux-gnu.tar.gz
	 https://static.rust-lang.org/dist/rust-std-${_rust_dist_version}-i686-unknown-linux-gnu.tar.gz
	 https://static.rust-lang.org/dist/cargo-${_cargo_dist_version}-i686-unknown-linux-gnu.tar.xz"
	checksum+="
	 a9ba9c97cf4818ab14966617390eadfc3dfd5221033f8f749aebd86c1d722ef9
	 0ac6356223f53ec5f21cea6a9e9e5cd2fee3d45916f831e1ca54853893ec0b73
	 2bc3468b9b470824bf366f7404ad36644ad4d5a41f1be29601fd6a138d3b72a5"
	;;
esac

post_extract() {
	rm -rf src/llvm

	case "$XBPS_MACHINE" in
		*-musl) patch -p1 < $FILESDIR/musl.patch ;;
	esac

	mkdir -p stage0
	cp -flr ../rustc-*/rustc/* stage0
	cp -flr ../rust-std-*/rust-std-*/* stage0
	case "$XBPS_MACHINE" in
		*-musl) cp -flr ../cargo stage0/bin;;
		*) cp -flr ../cargo-*/cargo/* stage0;;
	esac

	# XXX: Cheat Rust build system so we can build rustc using different
	# version of (prebuilt) stable rustc than preconfigured. It's hack-ish,
	# but since we're basically rebuilding rustc with the same version,
	# it's actually safe.
	# Note: --enable-local-rebuild from #33787 didn't work, don't know why.
	export LD_LIBRARY_PATH="$wrksrc/stage0/lib"
	rustc_ver="$($wrksrc/stage0/bin/rustc --version | cut -f2 -d ' ')"
	rustc_key="$(printf "$rustc_ver" | md5sum | cut -c1-8)"
	sed -Ei \
		-e "s/^(rustc):.*/\1: $rustc_ver-1970-01-01/" \
		-e "s/^(rustc_key):.*/\1: $rustc_key/" \
		src/stage0.txt

	# Generate config for bootstrap.py to use our prebuilt rustc and cargo
	# for bootstrapping instead of downloading snapshot from internet.
	cat > config.toml <<EOF
[build]
cargo = "$wrksrc/stage0/bin/cargo"
rustc = "$wrksrc/stage0/bin/rustc"
EOF

	sed -i /LD_LIBRARY_PATH/d src/bootstrap/bootstrap.py
}

pre_build() {
	export CARGO_HOME="$wrksrc/.cargo"
	export SSL_CERT_FILE=/etc/ssl/certs/ca-certificates.crt
	export LD_LIBRARY_PATH="$wrksrc/stage0/lib"
	export PATH="$wrksrc/stage0/bin:$PATH"
	export MUSL_ROOT=/usr
	export RUST_BACKTRACE=1
}

do_configure() {
	local _triplet
	case $XBPS_TARGET_MACHINE in
		i686) _triplet=i686-unknown-linux-gnu;;
		x86_64) _triplet=x86_64-unknown-linux-gnu;;
		x86_64-musl) _triplet=x86_64-unknown-linux-musl;;
		*) _triplet=$XBPS_TARGET_MACHINE;;
	esac
	export LD_LIBRARY_PATH="$wrksrc/stage0/lib"
	configure_args="
		--prefix=/usr
		--host=${_triplet}
		--build=${_triplet}
		--release-channel=stable
		--disable-rpath
		--disable-docs
		--disable-codegen-tests
		--enable-ccache
		--llvm-root=/usr
		--enable-local-rust
		--local-rust-root=$wrksrc/stage0
	"
	case "$XBPS_TARGET_MACHINE" in
	*-musl)
		configure_args+="--musl-root=/usr --disable-jemalloc"
		;;
	esac
	./configure $configure_args

}
do_install() {
	vmkdir usr
	tar xf build/dist/rustc-*-*-*.tar.gz -C "$DESTDIR/usr" --strip-components=2 --exclude=manifest.in
	tar xf build/dist/rust-std-*-*-*.tar.gz -C "$DESTDIR/usr/lib" --strip-components=3 --exclude=manifest.in

	vlicense COPYRIGHT
	vlicense LICENSE-APACHE
	vlicense LICENSE-MIT

	cd ${DESTDIR}/usr/lib
	ln -sf rustlib/*/lib/*.so .   # symlinks instead of copies
}

rust-doc_package() {
	short_desc+=" - documentation"
	noarch=yes
	pkg_install() {
		vmove usr/share/doc
	}
}