# Template file for 'rust'
# partially adapted from Alpine/Adélie's Rust APKBUILD
#
# Permission to use rust and cargo trademark is granted.
# See: https://github.com/rust-lang/core-team/issues/4
#
# Always make sure custom distfiles used for bootstrap are
# uploaded to https://alpha.de.repo.voidlinux.org/distfiles/
#
pkgname=rust
version=1.48.0
revision=1
_rust_dist_version=1.48.0
wrksrc="rustc-${version}-src"
hostmakedepends="cmake curl pkg-config python3 tar"
makedepends="libffi-devel ncurses-devel libxml2-devel zlib-devel llvm11"
depends="rust-std"
short_desc="Safe, concurrent, practical systems language"
maintainer="Enno Boland <gottox@voidlinux.org>"
license="MIT, Apache-2.0"
homepage="https://www.rust-lang.org/"
distfiles="https://static.rust-lang.org/dist/rustc-${version}-src.tar.gz"
checksum="0e763e6db47d5d6f91583284d2f989eacc49b84794d1443355b85c58d67ae43b"
lib32disabled=yes
patch_args="-Np1"

build_options="bindist"
desc_option_bindist="Generate tarballs for bootstrap"

# rust upstream no longer ships cargo-versioned tarballs
# need to use the corresponding rust version instead
_bootstrap_url="https://static.rust-lang.org/dist"
_cargo_dist_version="${_rust_dist_version}"

# 32-bit gnu ppc needs custom bootstrap because of patches
case "$XBPS_MACHINE" in
	x86_64*|i686|ppc64le) ;;
	ppc*)
		# custom bootstrap tarballs still use cargo versioning, so override
		_bootstrap_url="https://alpha.de.repo.voidlinux.org/distfiles"
		_cargo_dist_version="0.49.0"
		;;
esac

# always use external binary cargo; this allows us to break
# the cargo<->rust cycle that appears when cross-compiling
distfiles+=" ${_bootstrap_url}/cargo-${_cargo_dist_version}-${RUST_BUILD}.tar.xz"

case "$XBPS_MACHINE" in
	i686)
		checksum+="
		 1eab76df91e87198632605752d0dd66f3d84b502cbd1f982f6db3d0d8d943cdb"
		;;
	x86_64)
		checksum+="
		 b11d595581e2580c069b5039214e1031a0e4f87ff6490ac39f92f77857e37055"
		;;
	x86_64-musl)
		checksum+="
		 8728cb7515e593f6fcf3c7afba826a92cd227a35b8e936bae892b95482d4fb90"
		;;
	ppc64le)
		checksum+="
		 675321cf812a132ce707261d03aab2f5ff64788ae66b45d03bc281514f5d53ec"
		;;
	ppc64le-musl)
		checksum+="
		 cf02e057f04e40458b63326e443c48924c78fc33dcb6b892643d47feb1496b09"
		;;
	ppc64)
		checksum+="
		 1e7612ea1900b76924429fa04fa2c194f4213167933b481001290dd4fef27939"
		;;
	ppc64-musl)
		checksum+="
		 88ffadd53e79055ba266f1303d502bcf1ef863783b121aa017930cadcd0e398d"
		;;
	ppc)
		checksum+="
		 cacacdec7bfd24345804efdd1bd1682084880c3c6a086bcab85cd1186b6cd230"
		;;
	ppc-musl)
		checksum+="
		 bad4a5d22da3c7548fd440d0d5a0b98e4de9894dedb35bfb58aaa5f141c23adb"
		;;
	*) broken="cargo bootstrap binary unavailable for ${XBPS_MACHINE}";;
esac

_bootstrap_dir="stage0-bootstrap"

# as for the rust compiler, just depend on self when crosscompiling...
# this is because if we do that, we can skip stage0 build and considerably
# cut down the build time (the local-rebuild property is enabled for cross)

if [ "$CROSS_BUILD" ]; then
	hostmakedepends+=" rust llvm11"
	# These are required for building the buildhost's stage0/1
	hostmakedepends+=" libffi-devel libxml2-devel ncurses-devel zlib-devel"
else
	distfiles+="
	 ${_bootstrap_url}/rustc-${_rust_dist_version}-${RUST_BUILD}.tar.xz
	 ${_bootstrap_url}/rust-std-${_rust_dist_version}-${RUST_BUILD}.tar.xz"

	case "$XBPS_MACHINE" in
		i686)
			checksum+="
			 c241405350bf6f88224db7040012ce25351b332d6deffec07a9b5a958ab19a28
			 d4ea5ca6f9c8f9092b50c879f1d9a2620486f08020fa4cac227743a19f6e8cdf"
			;;
		x86_64)
			checksum+="
			 fc4d292a52cbb6b84fb9f065d0d7596064a9b957381d639d5a750d6e2bf02483
			 1c00a6a0dabbf6290728b09f9307d9fa6cc985487f727075c68acd4a600ef3f8"
			;;
		x86_64-musl)
			checksum+="
			 50c2904db7794400987487ea364392714830f287f3e596a9f8ea9df748dfa8a3
			 4f485d8800f90898705686b873765a4c0fe909d1127d5b091a01979bc32f01c0"
			;;
		ppc64le)
			checksum+="
			 bf06c20e09c66391c19de4319de64621c82787e5e44a40ec25fb565a4c6caf28
			 e42b64c5710d3982f22ed744ea21ef2f0196df908c6a673b6df550904583b1c3"
			;;
		ppc64le-musl)
			checksum+="
			 f6967f8afe25f6beff65f2e139babc253de2c40edf556f615e380f50b4a31da8
			 96311452bb46a855b7afe5883f619d4b768f14c7a5d5de01e15e146fb05d6d59"
			;;
		ppc64)
			checksum+="
			 13764a670b15480d1d850cc8ae3576536265e1fcac869c1a8fa72a8ebd059193
			 5ce4b14e8895d995c24d3f8706ea9bb6a3ee153bd8d8cec8d808ad66e62162bc"
			;;
		ppc64-musl)
			checksum+="
			 6b2485c27be4a3d390e8dd4153381304ec3883eb0d9543835b29e0a471e9d4f0
			 e5e513fe1e660856b4a7b133c99c23468bf781b93c69e7a098f600bcb91ce9bb"
			;;
		ppc)
			checksum+="
			 4ea76c15c7225ab113c391fb7640786decf706e256fb9338e5b0c2763286777c
			 5682d27ffc6f6c1655987e154f5425f9114516e22b7797c9e81bf038ffffad21"
			;;
		ppc-musl)
			checksum+="
			 4147cae868df4e936409331ee9e2d81d47529d05a7a2e045d7f566e09eb4f302
			 20132e5c67a67399e7945ba17d698a6aa1833f87b89bfc8a5a1678d75cfc637d"
			;;
		*) broken="rust bootstrap binaries unavailable for ${XBPS_MACHINE}";;
	esac
fi

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

# 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_bindist" ]; 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
}

do_configure() {
	local _cargo_root _rust_root _local_rebuild _use_debug _use_debug_rustc _use_rpath _use_docs

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

	_cargo_root="${wrksrc}/${_bootstrap_dir}"

	# 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
	if [ "$build_option_bindist" ]; then
		_use_rpath="true"
		_use_docs="false"
	else
		_use_rpath="false"
		_use_docs="true"
	fi

	cat > config.toml <<- EOF
		[build]
		build = "${RUST_BUILD}"
		host = [ "${RUST_TARGET}" ]
		target = [ "${RUST_TARGET}" ]
		cargo = "${_cargo_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 = ${_use_docs}
		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 [ ! "$build_option_bindist" ]; then
		export LLVM_LINK_SHARED=1
	fi
	export RUST_BACKTRACE=1
	export CARGO_HOME="$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/ui \
		src/test/ui-fulldeps
}

do_install() {
	if [ "$build_option_bindist" ]; then
		mkdir -p ${XBPS_SRCDISTDIR}/distfiles
		install -m 0644 \
			build/dist/rustc-${version}-${RUST_TARGET}.tar.xz \
			build/dist/rust-std-${version}-${RUST_TARGET}.tar.xz \
			${XBPS_SRCDISTDIR}/distfiles
		exit 1
	fi

	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
	tar xf build/dist/rustc-dev-${version}-${RUST_TARGET}.tar.gz \
	 -C "$DESTDIR/usr/lib" --strip-components=3 --exclude=manifest.in
	tar xf build/dist/rust-docs-${version}-${RUST_TARGET}.tar.gz \
	 -C "$DESTDIR/usr" --strip-components=2 --exclude=manifest.in

	vlicense COPYRIGHT
	vlicense LICENSE-APACHE
	vlicense LICENSE-MIT

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

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

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