# Template file for 'rust'
pkgname=rust
version=1.31.0
revision=1
_rust_dist_version=1.31.0
_cargo_dist_version=0.32.0
# 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=9ad54dc0baf1db5fc6a79d54e71c439c82aff85cd96778978456f2958211ef06

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.tar.xz"
		checksum+="
		 7ca7360b9243b7117bbb5281b563fdf2bfae61d223ad858199aabc438c828926
		 b5cadf379e82905459dea5359c7111b30cfbba33a17b6960e3beb72ce79b7db9
		 4dfb1cca7730b38920c04731be0e9d47ec520b3365059b4ccd9c0948346787ea"
		;;
	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-${_cargo_dist_version}-x86_64-unknown-linux-gnu.tar.xz"
		checksum+="
		 5c4581f0fc05f0f5076db6231b0c1a4d27eb61c0b36bfb42d97243ad8f4e43a0
		 fe67a62c7a63acbf2458a36d7689ef41903187a472f0c28850f1fca7ea478da8
		 c5e0db9d19ed3490b94893883115c5f4e5fa1c958422d234a7c6c9e78f6d216f"
		;;
	i686)
		# extract from src/stage0.txt
		distfiles+="
		 https://static.rust-lang.org/dist/rustc-${_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+="
		 549116e23dce8687f69327f5ea2c717c93175d24d82d456fab37160f800f8ce8
		 14de38321f6f2c64496e77bac793ad5511d37696b9c33283bb6f395dc590c4d9
		 7c903dd340f84e7e02428a7042f22f1830114cef0403f2c20027d087a2ba09f6"
		;;
	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
	}
}