# 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=1.46.0
revision=1
_rust_dist_version=1.45.2
_cargo_dist_version=0.46.1
# 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="2d6a3b7196db474ba3f37b8f5d50a1ecedff00738d7846840605b42bfc922728"
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+="
			 72676b7bb6a6ad056af2ad5459b1ac3992b7a65b823ed7f00d4af72266e0f1ad
			 05474dbec0385c8dcfd940e6f8954d4f8284745a4fbcf57932022b1593829463
			 8931dba1c23405fe630aa4ca2aceaba7de74c21cc03947c757b349d004d6a4d6"
			;;
		x86_64)
			checksum+="
			 0be5c8506fd9317c7d0dc8044b5fef8501caa74f88a9a22be795d68362dc57f6
			 02309322467af8e37256ccf1f064f5233c7fca4423dffde0bd5eb32cde46942a
			 a27eb5d47b520ef2c554605bf789f80652af63531b4f6a1195d61b3dfd0f6e9c"
			;;
		x86_64-musl)
			checksum+="
			 9a971ff29e01243b08f6f3c220ab5d608489637a6b5d81ba2e8a78007901ced0
			 e8081032d53baa129c41c4c2bfb025648ac321c9c809f377110f8a26f7ce1cdb
			 895a3b6928a5bf7b1ac28c339a85ddd078dd719f54245b8d845370baf8255368"
			;;
		ppc64le)
			checksum+="
			 68af3485558636be870a067d0e1196ee34664de1b6e5e6f68aed926c0906574d
			 0a000c2e047c675bee27c2287b2e03fe21148ead95c35b884846a8dc7c3c162d
			 93354ae5cedaa75d44928d5e232cd9a57a9164cadf47d4a30493c05e60b59b7f"
			;;
		ppc64le-musl)
			checksum+="
			 158338268de72108b35ea7b018d99f08be8e7340996a12dc2f4682e06f148fc5
			 5c1225e6fb029008584f4d1813ddcd1bccce2c329b398a02b3bd6ea4e6d9e128
			 12da677338f860362e00089fe5b67ecd619c0ae4a4ca2bd14e500df32f598f49"
			;;
		ppc64)
			checksum+="
			 d474ecedc0783081fa025742b92c459a12f97d2ffc87a83c143df0fa9f4d7212
			 60e32e91c9da0263f69c2b41ba5aa0953b2026fb11118bd1595db062a8c5fa62
			 eab0c2d96f863e3c87afc46d43c54df6614af333b98ee881278acf56d9bf3fe8"
			;;
		ppc64-musl)
			checksum+="
			 1eecbc8f719a41c905b85dd3723f09e2999cc468deaf4f127614310f0634931f
			 8abdd395a4448c96e64b881921fc0bba0fdb5da133b1973962018316e8fb5cfa
			 48770d0f7941005c87c0ddf303a7eca2fcff4c56cfdaaf60b5d862dfeee2a59d"
			;;
		ppc)
			checksum+="
			 772db024e310835f3a967f6e5a147564f3633c8173e88516f2484d9f1d914f6b
			 e2c0e48421b0e6da709686e8d2a94852821ad483f1f74f27c48c08d012c917ad
			 034af894e980f642e31d35978d8cbb8839fe9c8f1119083a720a58f7ad7fb881"
			;;
		ppc-musl)
			checksum+="
			 11d34ff8cca6e76e2b307898bc11858f70e5bdadd2746506aa92923d19e03358
			 5c5c3e917339084230ee56b47a9a51fd4e89c5d7227b32f0636b92edd9031980
			 aac08878b9ce3bf7dff4247e988fdaddeaa410cccc8559f8e7e0fd45d8f2ece5"
			;;
	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
	}
}