# 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
pkgname=rust
version=1.44.1
revision=1
_rust_dist_version=1.43.1
_cargo_dist_version=0.44.0
# Always make sure custom distfiles used for bootstrap are
# uploaded to https://alpha.de.repo.voidlinux.org/distfiles/
wrksrc="rustc-${version}-src"
hostmakedepends="cmake curl pkg-config python3 tar"
makedepends="libffi-devel ncurses-devel libxml2-devel zlib-devel llvm10"
depends="rust-std"
short_desc="Safe, concurrent, practical systems language"
maintainer="Enno Boland <gottox@voidlinux.org>"
license="MIT, Apache-2.0"
homepage="https://www.rust-lang.org/"
distfiles="https://static.rust-lang.org/dist/rustc-${version}-src.tar.gz"
checksum="7e2e64cb298dd5d5aea52eafe943ba0458fa82f2987fdcda1ff6f537b6f88473"
lib32disabled=yes
patch_args="-Np1"

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

_bootstrap_dir="stage0-bootstrap"

if [ "$CROSS_BUILD" ]; then
	hostmakedepends+=" cargo llvm10"
	# 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+="
			 b415a406443cafa85e426d56d02fb52231b8d78ad1fec33b79b757d8ef4ed64c
			 9913d3e21efc13445e3b71f6e1103c63b130544e1f28a99a0bb642276ebca985
			 c7b4045b2001be2e97b0b08dfaee02097aea0e8a9983b42585d733cfa1e69683"
			;;
		x86_64)
			checksum+="
			 a18b89572ff2e55eb9e0428efcdb60eacd82fe28c4d825d169b0ffc9e3c55ceb
			 dabc62db53c2e7ffeba2824d4c52a938486b04c01a93ecba00c5d529868f6cfc
			 84ba23058542691dae8157beec6a7679a420643eb6a708134bb1dfb01cbdebea"
			;;
		x86_64-musl)
			checksum+="
			 be982dc01b5c86a3f2b0b99a2ca0e13b3cea698ee6f1db9fa024de5c8b35a75d
			 f3b55147ff6e01448699eaf0875d7956ea38eeef42a19cda9d555e814470e823
			 653cb60214d6f1000c9a7775111dccd093c0118e7f7bf5f2f1f53a7e5e2420b3"
			;;
		ppc64le)
			checksum+="
			 8fd21a9eac7e27a5f7af9d9357455d1ff5aef01d84b4025a773caaae6e0a6db7
			 235bdaf836a0bd139257d6cc0566e0c3d4d1e07c04304ed9a8d200299aaa4a48
			 4f90cd6cbcf9e9d6ba11830e093092e4e6c3d156ffde2e729933869b7a039ff9"
			;;
		ppc64le-musl)
			checksum+="
			 2c32096c0f1b3a756cc29d6ecaf89296148a7a99d43baa0141bee490b353b502
			 fa87695bdede026b031010716fafbe2890cbff00acc3042fd372dd7cc5eb46a7
			 a85e8c9714a8bb7c17cd23993c677f51d9e0d6f5e85ab10f53ec1639b19bbbd4"
			;;
		ppc64)
			checksum+="
			 4aa250cd14553ae3a438cd7a7290a79b899d1fbec9fc60985bbce070b500883e
			 2cd6e88be42db44338c18fa6e3170ffea679ee73825826112cdbf6dd9ed0619a
			 983e2fbec9c4bfe66bab37ad64cdd5b47918378e421d9bf639e938f120650199"
			;;
		ppc64-musl)
			checksum+="
			 f3c4fb775e63248914fece31199312dd2f69660f10b696ebbc56d41d4bc4ac2c
			 c3d580c71e5a716056347513588d4445bdb8225e2ee5d9f2cf87c5bb4357bcb1
			 f974893d1cac6c799345bece08c7f796eb50e1a77c4b9bc2a6451d161a57c660"
			;;
		ppc)
			checksum+="
			 109d6af5d05cfbde5a476d07cf8b3093a974b0c76922bf8cd1046c5e11f5caaa
			 a90152808c82f863f3c14647ebfbb6ae66d065ea4577be1036f6dc229c1e7e89
			 48f4419300fe758ebe024e6449a5ca1dff07803047a815b3d3909170baa7adcc"
			;;
		ppc-musl)
			checksum+="
			 3d5211d6c5cf241b3d3dba343c027d05ff04765e2dd4175168095a86e7c9de22
			 04a5cdb4f18ccae3eb9059c84adf7a7778484e89c8404ba67cde814019ec5b57
			 bbb93a757e75d09cb5f6d6dd837e32212acd8888426406352eccf52f329386f1"
			;;
	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_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 backtrace-sys
	_clear_vendor_checksums lzma-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
	if [ "$build_option_bindist" ]; then
		_use_rpath="true"
	else
		_use_rpath="false"
	fi

	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 [ ! "$build_option_bindist" ]; then
		export LLVM_LINK_SHARED=1
	fi
	export RUST_BACKTRACE=1
	export CARGO_HOME="$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

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

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