# Template file for 'rust'
pkgname=rust
version=1.30.1
revision=1
_rust_dist_version=1.30.1
_cargo_dist_version=0.31.0
# 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-${version}-src"
lib32disabled=yes
patch_args="-Np1"
build_style=configure
make_build_args="dist VERBOSE=1"
hostmakedepends="cmake curl pkg-config python"
makedepends="libffi-devel llvm ncurses-devel libxml2-devel zlib-devel"
depends="rust-std"
short_desc="Safe, concurrent, practical systems language"
maintainer="Enno Boland <gottox@voidlinux.eu>"
homepage="https://www.rust-lang.org/"
license="MIT, Apache-2.0"
distfiles="https://static.rust-lang.org/dist/rustc-${version}-src.tar.gz"
checksum=36a38902dbd9a3e1240d46ab0f2ca40d2fd07c2ab6508ed7970c6c4c036b5b29

if [ "$CROSS_BUILD" ]; then
	hostmakedepends+=" cargo llvm"

	# These are required for building the buildhost's stage0/1
	hostmakedepends+=" libffi-devel libxml2-devel
		ncurses-devel zlib-devel"
else
	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-libressl-2.8.tar.gz"
		checksum+="
		 44abd56868e63447c43eb8644847d14662f57f2aa65342147432dc89fc4c94aa
		 341fb3dee37eae8235b6193110f84bb2915c08b451d228532b4f1d80366afe9b
		 61d72ac378f3ee592cd3c82b02518f717bfcf328946ad4a51d24a2dac546c1cb"
		;;
	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-${_cargo_dist_version}-x86_64-unknown-linux-gnu.tar.xz"
		checksum+="
		 d84de208499b59e4a3c074f9f3f2fcbb26fb20d6bfd19262e6d5f4181ddbe34d
		 12c4b164efed44c28096fcd141225ee9bf74e7e3395bc6a60c11c9115a0536c6
		 21ef918ba8970815856ef2764ad1b377a2d4868bed96340ac05d7fe62f8cf952"
		;;
	i686)
		# extract from src/stage0.txt
		distfiles+="
		 https://static.rust-lang.org/dist/rustc-${_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+="
		7259121446e2ef579f2a3ed24c8a54a85a2a1a8d5ff517a0249ba3639ee989cf
		88aadaf4dd4fdf565a72ec822e08de5c6a72d3784fc378b82689f2843f8da874
		642e298e1431a9d65559a3bae9c4e1dab79816577b7b3c1f35e28c5621878165"
		;;
	esac
fi

# In rust terminology 'build' is the build host ($CBUILD) and `target`
# and `host` are the triplets that are supposed to run the built binaries
# ($CTARGET)
case $XBPS_MACHINE in
	*-musl) _build_triplet=${XBPS_MACHINE%-musl}-unknown-linux-musl;;
	*) _build_triplet=${XBPS_MACHINE}-unknown-linux-gnu;;
esac

post_extract() {
	rm -rf src/llvm

	if [ -z "$CROSS_BUILD" ]; then
		mkdir -p stage0
		rm ../rustc-*/rustc/manifest.in
		cp -bflr ../rustc-*/rustc/* stage0
		rm ../rust-std-*/rust-std-*/manifest.in
		cp -bflr ../rust-std-*/rust-std-*/* stage0
		case "$XBPS_MACHINE" in
			*-musl) cp -bflr ../cargo stage0/bin;;
			*)
				rm ../cargo-*/cargo/manifest.in
				cp -flr ../cargo-*/cargo/* stage0
				;;
		esac
	fi

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

do_configure() {
	export LD_LIBRARY_PATH="$wrksrc/stage0/lib"

	configure_args="
		--prefix=/usr
		--host=${RUST_TARGET}
		--target=${RUST_TARGET}
		--build=${_build_triplet}
		--disable-full-bootstrap
		--release-channel=stable
		--disable-rpath
		--disable-docs
		--disable-codegen-tests
		--llvm-root=/usr
		--set=target.${_build_triplet}.llvm-config=/usr/bin/llvm-config
	"

	# Disable jemalloc for now. It increases the size of small programs
	# significantly (hello world without jemalloc 130KB vs with jemalloc
	# 300KB) and provides worse performance in some cases.
	configure_args+=" --disable-jemalloc"

	if [ "$CROSS_BUILD" ]; then
		configure_args+="
			--local-rust-root=/usr
			--enable-local-rebuild
		"

		# Set the appropriate values for the native compilation tools
		configure_args+="
			--set=target.${_build_triplet}.cc=${CC_host}
			--set=target.${_build_triplet}.cxx=${CXX_host}
			--set=target.${_build_triplet}.ar=${AR_host}
			--set=target.${_build_triplet}.linker=${CC_host}
		"

		# Set 'llvm-config' for the cross target (host) so that we don't build
		# LLVM for it again.
		configure_args+="
			--set=target.${RUST_TARGET}.llvm-config="/usr/bin/llvm-config"
		"
	else
		configure_args+=" --local-rust-root=$wrksrc/stage0"
	fi
	case "$XBPS_TARGET_MACHINE" in
	*-musl)
		configure_args+=" --set=target.${RUST_TARGET}.musl-root=/usr"
		;;
	esac

	./configure $configure_args
}

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
	export RUSTFLAGS="-C linker=${CC}"
}

# Set the correct CFLAGS for the build host, we have to compile libbacktrace
# for it during stage1. Otherwise it attemps to use CFLAGS, which are the CFLAGS
# of the cross host.
do_build() {
	env CFLAGS_${_build_triplet}="${CFLAGS_host}" make ${makejobs} ${make_build_args}
}

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

rust-std_package() {
	short_desc+=" - standard library"
	pkg_install() {
		vmove usr/lib/rustlib
	}
}