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110 lines
3.5 KiB
Bash
110 lines
3.5 KiB
Bash
# Copyright 2024-2025 Gentoo Authors
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# Distributed under the terms of the GNU General Public License v2
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EAPI=8
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inherit edo multiprocessing rust-toolchain toolchain-funcs
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# The makefile needs to know the version of rust to build
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RUST_VERSION=1.74.1
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# We need to pretend to be this version of Rust for mrustc build and outputs
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MRUSTC_RUST_VER=1.74.0
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DESCRIPTION="Mutabah's Rust Compiler"
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HOMEPAGE="https://github.com/thepowersgang/mrustc"
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if [[ ${PV} == *"9999"* ]]; then
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inherit git-r3
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EGIT_REPO_URI="https://github.com/thepowersgang/mrustc.git"
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else
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SRC_URI="https://github.com/thepowersgang/mrustc/archive/refs/tags/v${PV}.tar.gz -> ${P}.tar.gz
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https://static.rust-lang.org/dist/rustc-${RUST_VERSION}-src.tar.xz
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"
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KEYWORDS="amd64"
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fi
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LICENSE="MIT"
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SLOT="0"
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DEPEND="sys-libs/zlib"
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# mrustc transpiles Rust to C, and currently the C code it generates doesn't currently work with clang
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RDEPEND="
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${DEPEND}
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sys-devel/gcc:*
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"
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BDEPEND="sys-devel/gcc:*"
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PATCHES=(
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"${FILESDIR}/${PN}-0.11.2-gcc15.patch"
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"${FILESDIR}/${PN}-0.11.2-dont-strip-bins.patch"
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"${FILESDIR}/${PN}-0.11.0-default-to-rust-1_74.patch"
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"${FILESDIR}/${PN}-0.11.0-RUSTC_SRC_PROVIDED.patch"
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"${FILESDIR}/${PN}-0.10.1-git-be-gone.patch"
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"${FILESDIR}/${PN}-0.11.2-no-glibcxx-assertions-workaround.patch"
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"${FILESDIR}/${PN}-0.11.2-no-glibcxx-assertions-workaround-more.patch"
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)
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QA_FLAGS_IGNORED="
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usr/lib/rust/${P}/bin/mrustc
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usr/lib/rust/${P}/bin/minicargo
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usr/lib/rust/${P}/lib/rustlib/$(rust_abi)/lib/*.rlib
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"
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pkg_setup() {
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if [[ ${MERGE_TYPE} != binary ]] && ! tc-is-gcc; then
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die "mrustc needs to be built using GCC."
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fi
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}
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src_configure() {
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:
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}
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src_compile() {
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export PARLEVEL=$(makeopts_jobs)
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export RUSTC_VERSION=${MRUSTC_RUST_VER} # Pretend that we're using upstream-supported Rust
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export MRUSTC_TARGET_VER=${RUSTC_VERSION%.*}
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export RUSTCSRC="${WORKDIR}/rustc-${RUST_VERSION}-src"
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export RUSTC_SRC_PROVIDED=1
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export V='' # echo build commands in makefiles (minicargo still writes commands to file)
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# build mrustc & minicargo then use them to build the standard library
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# emake -f minicargo.mk will do everything including a full bootstrap
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emake all
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emake -C tools/minicargo/
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# It's not much, but it's enough to do a 'hello world' at least... and build dev-lang/rust!
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emake -e -f minicargo.mk LIBS
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}
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src_test() {
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# The main makefile test targets just do this, cut out the middleman
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emake -e -f minicargo.mk local_tests
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# build and run 'hello world' (this is called using 'test' in the makefile, but we can do it manually)
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edo "${S}"/bin/mrustc -L "${S}"/output-${MRUSTC_RUST_VER}/ \
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-g "${S}/../rustc-${RUST_VERSION}-src/tests/ui/hello_world/main.rs" -o "${T}"/hello
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"${T}"/hello || die "Failed to run hello_world built with mrustc"
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}
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src_install() {
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# If we're installing into /usr/lib/rust we may as well be consistent
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into /usr/lib/rust/${P}
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dobin bin/mrustc
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dobin bin/minicargo
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local lib patch
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local libs=( "${S}"/output-*/*.rlib* )
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insinto "/usr/lib/rust/${P}/lib/rustlib/$(rust_abi)/lib"
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# If we ever want to support mrustc stdlib for multiple rusts we'll need to
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# do something more clever here.
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for lib in "${libs[@]}"; do
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# We only want .rlib{,.hir,o}
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if [[ ${lib} != *.c && ${lib} != *.d && ${lib} != *.txt ]]; then
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doins "${lib}"
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fi
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done
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# For convenience, install files required to build various rusts
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insinto /usr/share/${P}
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doins -r "${S}/script-overrides/"
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insinto /usr/share/${P}/patches
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for patch in "${S}"/rustc-*.patch "${S}"/rustc-*-overrides.toml; do
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doins "${patch}"
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done
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}
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