# Template file for 'rust'
# partially adapted from Alpine/Adélie's Rust APKBUILD
pkgname=rust
version=1.38.0
revision=1
_rust_dist_version=1.38.0
_cargo_dist_version=0.39.0
# Always make sure custom distfiles used for bootstrap are
# uploaded to https://alpha.de.repo.voidlinux.org/distfiles/
wrksrc="rustc-${version}-src"
hostmakedepends="cmake curl pkg-config python3"
# using llvm9 results in broken executables for some targets
makedepends="libffi-devel ncurses-devel libxml2-devel zlib-devel llvm8"
depends="rust-std"
short_desc="Safe, concurrent, practical systems language"
maintainer="Enno Boland <gottox@voidlinux.org>"
license="MIT, Apache-2.0"
homepage="https://www.rust-lang.org/"
distfiles="https://static.rust-lang.org/dist/rustc-${version}-src.tar.gz"
checksum=644263ca7c7106f8ee8fcde6bb16910d246b30668a74be20b8c7e0e9f4a52d80
lib32disabled=yes
patch_args="-Np1"

build_options="static_llvm"

_bootstrap_dir="stage0-bootstrap"

if [ "$CROSS_BUILD" ]; then
	hostmakedepends+=" cargo llvm8"
	# These are required for building the buildhost's stage0/1
	hostmakedepends+=" libffi-devel libxml2-devel ncurses-devel zlib-devel"
else
	_bootstrap_url="https://static.rust-lang.org/dist"

	# 32-bit ppc needs custom bootstrap for now because of patches
	case "$XBPS_MACHINE" in
		x86_64*|i686|ppc64le) ;;
		ppc*) _bootstrap_url="https://alpha.de.repo.voidlinux.org/distfiles" ;;
		*) broken="unsupported host: ${XBPS_MACHINE}" ;;
	esac

	distfiles+="
	 ${_bootstrap_url}/rustc-${_rust_dist_version}-${RUST_BUILD}.tar.xz
	 ${_bootstrap_url}/rust-std-${_rust_dist_version}-${RUST_BUILD}.tar.xz
	 ${_bootstrap_url}/cargo-${_cargo_dist_version}-${RUST_BUILD}.tar.xz"

	# checksums must be specified per arch
	case "$XBPS_MACHINE" in
		i686)
			checksum+="
			 183dca6a4d746b833804e658267c1a60cdb446a36d4e4f8d29b04cfd29d886d5
			 a3248cf8cf7e33afb0a2508c7c204ffe5db2e515c3d3d31ffd9a2146ffa3bad3
			 2996b0fb41506e87d9b07851f40b41fed94725cf53c3d251e4e1c78eea08df4c"
			;;
		x86_64)
			checksum+="
			 0fedde3406cf3367ceb00f493698e6bfc3264bd7f7253c85de7a042b45f873fa
			 51b334337804baeff7524e5496d396f254894d7529860d236975e9ed8fcca371
			 80bcb1368ce98d13cb371df89cbbed9007fb98843f34d07f2abd2c03b8f2747a"
			;;
		x86_64-musl)
			checksum+="
			 9bc0b51bdfca3ed7b298021e2ec768bd28ea3af138d9dc1854a70e3866f06c0d
			 efcc1779f9815c1d99010ef9eb66a2439f3993bc4d5accd7566e669d1b182373
			 1d7d881a5af73fb7c3f632278d47a7d174f8347673e2263c4cd6a2f7d0278733"
			;;
		ppc64le)
			checksum+="
			 d7c011dae42ba4498493488385d3ab00d793124866baa8310cc6414b66c9d2d2
			 937d2ece46539ba149cdce307718dadbc4b038a3c751bd75749430bd421a6249
			 456d019511cfe015152a7a4c1c2f518fdeb10e0c610c9bc3ef44d73861ca967e"
			;;
		ppc64le-musl)
			checksum+="
			 37420069fc877a430c32b8b5a533483fdb7cc1a28d0d9e0c1f0579a111aec888
			 f4b6f37b1f914a2ca086a7e806d7552275a20982b139670ecb2bc1be2d33df2f
			 5725c42c8356443db15f378d88f2ccb67e363ebf4beacc96ae1eac9ba36f8fe7"
			;;
		ppc64)
			checksum+="
			 7821de7c49e6c26606f2248f8cd126bef92661e149f0a67cc87f08e359685d4e
			 b4d2a800fef9ca53208d16c5d5e215b01849d2f34eb476fa9d05457adf1b67ae
			 73a4f13b8edda6b4c9c1818341c5d936f7b11a04f892358039d072b80ccd41dc"
			;;
		ppc64-musl)
			checksum+="
			 a607da72ea9ae81149d563e5e07c03bfc9fcf819ad079f5193f86fcab376315c
			 4f3b8f8d3e07b27096224131816668c7f34a2d80b5f2c0353905dcd878c50f12
			 ac18707b8df5d1f64b7e15dabd73eb7a3b0f9ef5976ef7c6ceb462b5d3feb9cd"
			;;
		ppc)
			checksum+="
			 e4f088461db79b75c55210a1c70fd3127675287138196322a8416d078045468d
			 94a2a2fc17adec46daf913e0c71280f03c12048f5224e39c7a77c533a4582f08
			 02c07b741062e75556f5993a05eefe6dace70fee4a45542f1c6997fa69624d7e"
			;;
		ppc-musl)
			checksum+="
			 80428db030216eea9117d131acdb1293404e78b71d26746dceeed3bb30629d32
			 ca6253605d6eafafa9c2fbf27504b3c5d3f8efcaab69852a22ae080c265f03a9
			 b06306fc164bffa73afd2d21d96381a28d38446e58cf01a0d1585e92b4656a23"
			;;
	esac
fi

post_extract() {
	if [ -z "$CROSS_BUILD" ]; then
		mkdir -p "${wrksrc}/${_bootstrap_dir}"
		../rust-std-${_rust_dist_version}-${RUST_BUILD}/install.sh \
		 --destdir="${wrksrc}/${_bootstrap_dir}" --prefix=/ --disable-ldconfig
		../rustc-${_rust_dist_version}-${RUST_BUILD}/install.sh \
		 --destdir="${wrksrc}/${_bootstrap_dir}" --prefix=/ --disable-ldconfig
		# cargo may not be packaged like the rest
		cp ../cargo-${_cargo_dist_version}-${RUST_BUILD}/cargo/bin/cargo \
		 "${wrksrc}/${_bootstrap_dir}/bin"
	fi
}

# we need this because cargo verifies checksums of all files in vendor
# crates when it builds and gives us no way to override or update the
# file sanely... so just clear out the file list
_clear_vendor_checksums() {
	sed -i 's/\("files":{\)[^}]*/\1/' vendor/$1/.cargo-checksum.json
}

post_patch() {
	rm -rf src/llvm-project
	if [ "$build_option_static_llvm" ]; then
		for x in ${FILESDIR}/patches/static-llvm/*.patch; do
			msg_normal "Applying patch $x\n"
			patch -sNp1 -i ${x}
		done
	fi

	# clear out all the checksum nonsense of patched vendor crates
	_clear_vendor_checksums libc
	_clear_vendor_checksums typenum
	_clear_vendor_checksums backtrace-sys
}

do_configure() {
	local _rust_root _local_rebuild _use_debug _use_debug_rustc _use_rpath

	if [ "$CROSS_BUILD" ]; then
		_rust_root="/usr"
		_local_rebuild="true"
	else
		_rust_root="${wrksrc}/${_bootstrap_dir}"
		_local_rebuild="false"
	fi

	# disable rustc debug info as it bloats up rust-std significantly
	# set to 1 or 2 if you wish to have debug info for rustc, it won't
	# link on 32-bit platforms though (too big)
	_use_debug_rustc="0"

	# use stdlib debug level 2 for all platforms when generating debug
	if [ -n "$XBPS_DEBUG_PKGS" ]; then
		_use_debug="2"
	else
		_use_debug="0"
	fi

	# if true, the binaries will be built with rpath, so the binaries will be
	# usable directly from the build directory, this is not desirable for
	# packaging but is useful when building bootstrap binaries
	_use_rpath="false"

	cat > config.toml <<- EOF
		[build]
		build = "${RUST_BUILD}"
		host = [ "${RUST_TARGET}" ]
		target = [ "${RUST_TARGET}" ]
		cargo = "${_rust_root}/bin/cargo"
		rustc = "${_rust_root}/bin/rustc"
		submodules = false
		python = "python3"
		locked-deps = true
		vendor = true
		full-bootstrap = false
		local-rebuild = ${_local_rebuild}
		extended = false
		docs = false
		tools = []
		[install]
		prefix = "/usr"
		[rust]
		codegen-units = 1
		codegen-units-std = 1
		debug-assertions = false
		debuginfo-level = ${_use_debug}
		debuginfo-level-rustc = ${_use_debug_rustc}
		debuginfo-level-tests = 0
		backtrace = true
		incremental = false
		parallel-compiler = false
		channel = "stable"
		rpath = ${_use_rpath}
		verbose-tests = true
		dist-src = false
		jemalloc = false
		llvm-libunwind = false
		codegen-tests = false
		[dist]
		src-tarball = false
		[target.${RUST_BUILD}]
		llvm-config = "/usr/bin/llvm-config"
		crt-static = false
		cc = "${CC_host:-$CC}"
		cxx = "${CXX_host:-$CXX}"
		ar = "${AR_host:-$AR}"
		linker = "${CC_host:-$CC}"
	EOF

	if [ "$CROSS_BUILD" ]; then
		cat >> config.toml <<- EOF
			[target.${RUST_TARGET}]
			llvm-config = "/usr/bin/llvm-config"
			crt-static = false
			cc = "${CC}"
			cxx = "${CXX}"
			ar = "${AR}"
			linker = "${CC}"
		EOF
	fi
}

# 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() {
	if [ ! "$build_option_static_llvm" ]; then
		export LLVM_LINK_SHARED=1
	fi
	export RUST_BACKTRACE=1
	export CARGO_HOME="$wrksrc/.cargo"
	export SSL_CERT_FILE=/etc/ssl/certs/ca-certificates.crt
	# prevent sysroot from leaking in
	export RUSTFLAGS=""

	env CFLAGS_${RUST_BUILD}="${CFLAGS_host}" \
	 python3 x.py dist --jobs $XBPS_MAKEJOBS
}

do_check() {
	export RUST_BACKTRACE=1

	python3 x.py test ${makejobs} --no-doc --no-fail-fast \
		src/test/codegen \
		src/test/codegen-units \
		src/test/compile-fail \
		src/test/incremental \
		src/test/mir-opt \
		src/test/pretty \
		src/test/run-fail \
		src/test/run-fail/pretty \
		src/test/run-make \
		src/test/run-make-fulldeps \
		src/test/run-pass \
		src/test/run-pass/pretty \
		src/test/run-pass-fulldeps \
		src/test/run-pass-fulldeps/pretty \
		src/test/ui \
		src/test/ui-fulldeps
}

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"
	archs=noarch
	pkg_install() {
		vmove usr/share/doc
	}
}

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