# 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=1.53.0
revision=1
_rust_dist_version=1.53.0
wrksrc="rustc-${version}-src"
hostmakedepends="cmake curl pkg-config python3 tar"
makedepends="libffi-devel ncurses-devel libxml2-devel zlib-devel llvm12"
depends="rust-std"
short_desc="Safe, concurrent, practical systems language"
maintainer="Enno Boland <gottox@voidlinux.org>"
license="MIT, Apache-2.0"
homepage="https://www.rust-lang.org/"
distfiles="https://static.rust-lang.org/dist/rustc-${version}-src.tar.gz"
checksum=5cf7ca39a10f6bf4e0b0bd15e3b9a61ce721f301e12d148262e5ba968ab825b9
lib32disabled=yes

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

if [ "$XBPS_LIBC" = "musl" ]; then
	hostmakedepends+=" libexecinfo-devel"
fi
if [ "$XBPS_TARGET_LIBC" = "musl" ]; then
	makedepends+=" libexecinfo-devel"
fi

# 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="0.54.0"
		;;
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+="
		 deebb4a4de22a60f0dec5d5b84e8dfe6ce039835935dae96477a79468aefd927"
		;;
	x86_64)
		checksum+="
		 e4437f6c83574fc60e183f4df439190f7610e4a669476802795645da66fbb83b"
		;;
	x86_64-musl)
		checksum+="
		 ca236408cb2c35b8c3f7c2b4e9f1e69422ed24153f445192eafb6462351e5c2b"
		;;
	ppc64le)
		checksum+="
		 ca1d94161c3a4021bca170ba4ca059b5606fcd70934aca89d8cea43746880ba7"
		;;
	ppc64le-musl)
		checksum+="
		 1181b721addeb2aa471bf71549a7fb09f27167c382b480cefba272f770b9f039"
		;;
	ppc64)
		checksum+="
		 7d9b0428d4cd8cdd76582b3113476228013ec0b674802f18b4b5e8bbefcd3ab2"
		;;
	ppc64-musl)
		checksum+="
		 695d687c19a729504ac8b57a42e395258a8b801753baf1b0b17755d7f38f7eaa"
		;;
	ppc)
		checksum+="
		 176f178b9e55f399311edb4888d931e5f696766f655cc9648ae4b6ef1bdc8369"
		;;
	ppc-musl)
		checksum+="
		 234cf0792407065f4c5c4276886846cee2ecfb37eea1171c2c6e4a0fba7d324c"
		;;
	*) 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 llvm12"
	# 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+="
			 93b05456ea8500864e020cfbb1dfbe0a93651406432b6950013f87b91ea6ff47
			 d63690da8adb531bb92e76e211b37d3cf941fa841eaaaa210cce4cd6301ca64a"
			;;
		x86_64)
			checksum+="
			 9c2f0443a546dd18f1f020c7711a7b9864432545ceb812e79315c1e76508b193
			 66d5257bbd194db08e67ca63a74cc80cdc4a36eaa30bf7dfe65861d9deaff7f7"
			;;
		x86_64-musl)
			checksum+="
			 50de8b4bcb0819ec0ca363e0aa53fc1c55bc85f53bc82da8dce20a132da7e7d9
			 413449866616b1cd048da1356a41d977bf4e037cce114f07c3afbb0497b3e4c6"
			;;
		ppc64le)
			checksum+="
			 7624a5bf09bcaddc90851928d604e78ad9896b041ad1124b064a716b7250b42b
			 d29a9c16a52f3a5767733597efdb9cc1e3cb390961b11cf1d1792b48939de5ed"
			;;
		ppc64le-musl)
			checksum+="
			 09cd44fed6bf2d7ac0d180fc1374022deeb08be1d245ee26d1cfccc62658d22f
			 c283d604807f1c00e95a5122352941a64a26c3031ff41b80d395ac01ab55aa80"
			;;
		ppc64)
			checksum+="
			 3136af38b2413524f02bbf1377c32c82f5f3791c5f78b926d7d74ef667349a69
			 a01e07e15e151f5c6fdd7f3f167fa96326ea8fffdce402a3dbb9687f33ae5ccc"
			;;
		ppc64-musl)
			checksum+="
			 5dbcb8ca33874d7a82543b4f9d9f1c51e5680a998b0b572119e8be6b8ae4f566
			 5f03e215507313d14fc5275ba6951d3d7590634909def352504f52ad57c24dc3"
			;;
		ppc)
			checksum+="
			 be6ca5e02c04329b082eaf717ba2ea370d676a93e520cd5988883ea2ed8cb750
			 6006f7f78e30810e8b929ab5ab97cf5e4488a25f7fe6a49a1a548dd4745281e0"
			;;
		ppc-musl)
			checksum+="
			 6ecf74e3718bfc03a09ece82a246c9fe268bbb9a7d96cb7d65b579a824e5e1d9
			 17d14e51263e253ba082fc0b05f887dad7d16c705304514aa3268904ac472d29"
			;;
		*) 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
	_clear_vendor_checksums cc-1.0.60
	_clear_vendor_checksums gcc
	_clear_vendor_checksums cc
	_clear_vendor_checksums jemallocator
	_clear_vendor_checksums rustc-ap-rustc_target
	_clear_vendor_checksums target-lexicon
	_clear_vendor_checksums tikv-jemallocator
}

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 = ${_use_rpath}
		verbose-tests = true
		dist-src = false
		jemalloc = false
		llvm-libunwind = "no"
		codegen-tests = false
		[dist]
		src-tarball = false
		[target.${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/incremental \
		src/test/mir-opt \
		src/test/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 .

	# executable used for split dwarf, currently unstable on linux.
	# it's copied directly from the local llvm package, but
	# FIXME: cross builds are installing the version from the build machine,
	# it shouldn't be necessary to remove it
	rm rustlib/${RUST_TARGET}/bin/rust-llvm-dwp
}

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

rust-std_package() {
	short_desc+=" - standard library"
	if [ "$XBPS_TARGET_LIBC" = "musl" ]; then
		depends="libexecinfo-devel"
	fi
	pkg_install() {
		vmove usr/lib/rustlib
	}
}