mirror of
https://anongit.gentoo.org/git/repo/gentoo.git
synced 2025-07-23 15:37:58 +02:00
205ae33ea8
As noted in 850d5e6b5c, this is fine to do
these days. Combined with the LLVM_TARGET fixes from earlier today, this
should lead to a nice build-time improvement too.
Closes: https://bugs.gentoo.org/735154
Signed-off-by: Sam James <sam@gentoo.org>
1049 lines
38 KiB
Bash
1049 lines
38 KiB
Bash
# Copyright 1999-2025 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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LLVM_COMPAT=( 17 )
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PYTHON_COMPAT=( python3_{11..12} )
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RUST_PATCH_VER=${PVR}
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RUST_MAX_VER=${PV}
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RUST_MIN_VER="$(ver_cut 1).$(($(ver_cut 2) - 1)).0"
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RUST_OPTIONAL=1
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MRUSTC_VERSION="0.11.2"
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MRUSTC_RUST_VERSION="1.74.0"
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inherit check-reqs cmake edo estack flag-o-matic llvm-r1 multiprocessing multilib multilib-build \
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optfeature python-any-r1 rust rust-toolchain toolchain-funcs verify-sig
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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/rust-lang/rust.git"
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EGIT_SUBMODULES=(
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"*"
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"-src/gcc"
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)
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elif [[ ${PV} == *beta* ]]; then
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# Identify the snapshot date of the beta release:
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# curl -Ls static.rust-lang.org/dist/channel-rust-beta.toml | grep beta-src.tar.xz
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betaver=${PV//*beta}
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BETA_SNAPSHOT="${betaver:0:4}-${betaver:4:2}-${betaver:6:2}"
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MY_P="rustc-beta"
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SRC_URI="https://static.rust-lang.org/dist/${BETA_SNAPSHOT}/rustc-beta-src.tar.xz -> rustc-${PV}-src.tar.xz
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https://gitweb.gentoo.org/proj/rust-patches.git/snapshot/rust-patches-${RUST_PATCH_VER}.tar.bz2
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verify-sig? ( https://static.rust-lang.org/dist/${BETA_SNAPSHOT}/rustc-beta-src.tar.xz.asc
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-> rustc-${PV}-src.tar.xz.asc )
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"
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S="${WORKDIR}/${MY_P}-src"
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else
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MY_P="rustc-${PV}"
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SRC_URI="https://static.rust-lang.org/dist/${MY_P}-src.tar.xz
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https://gitweb.gentoo.org/proj/rust-patches.git/snapshot/rust-patches-${RUST_PATCH_VER}.tar.bz2
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verify-sig? ( https://static.rust-lang.org/dist/${MY_P}-src.tar.xz.asc )
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"
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S="${WORKDIR}/${MY_P}-src"
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KEYWORDS="amd64 arm arm64 ~loong ppc ppc64 ~riscv sparc x86"
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fi
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DESCRIPTION="Language empowering everyone to build reliable and efficient software"
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HOMEPAGE="https://www.rust-lang.org/"
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# keep in sync with llvm ebuild of the same version as bundled one.
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ALL_LLVM_TARGETS=( AArch64 AMDGPU ARC ARM AVR BPF CSKY DirectX Hexagon Lanai
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LoongArch M68k Mips MSP430 NVPTX PowerPC RISCV Sparc SPIRV SystemZ VE
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WebAssembly X86 XCore Xtensa )
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ALL_LLVM_TARGETS=( "${ALL_LLVM_TARGETS[@]/#/llvm_targets_}" )
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LLVM_TARGET_USEDEPS=${ALL_LLVM_TARGETS[@]/%/(-)?}
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# https://github.com/rust-lang/llvm-project/blob/rustc-1.74.1/llvm/CMakeLists.txt
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_ALL_RUST_EXPERIMENTAL_TARGETS=( ARC CSKY DirectX M68k SPIRV Xtensa )
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declare -A ALL_RUST_EXPERIMENTAL_TARGETS
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for _x in "${_ALL_RUST_EXPERIMENTAL_TARGETS[@]}"; do
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ALL_RUST_EXPERIMENTAL_TARGETS["llvm_targets_${_x}"]=0
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done
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LICENSE="|| ( MIT Apache-2.0 ) BSD BSD-1 BSD-2 BSD-4"
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SLOT="${PV}"
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IUSE="big-endian clippy cpu_flags_x86_sse2 debug dist doc llvm-libunwind lto miri mrustc-bootstrap nightly parallel-compiler rustfmt rust-analyzer rust-src +system-llvm test wasm ${ALL_LLVM_TARGETS[*]}"
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LLVM_DEPEND=()
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# splitting usedeps needed to avoid CI/pkgcheck's UncheckableDep limitation
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for _x in "${ALL_LLVM_TARGETS[@]}"; do
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LLVM_DEPEND+=( " ${_x}? ( $(llvm_gen_dep "llvm-core/llvm:\${LLVM_SLOT}[${_x}=]") )" )
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if [[ -v ALL_RUST_EXPERIMENTAL_TARGETS["${_x}"] ]] ; then
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ALL_RUST_EXPERIMENTAL_TARGETS["${_x}"]=1
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fi
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done
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LLVM_DEPEND+=( " wasm? ( $(llvm_gen_dep 'llvm-core/lld:${LLVM_SLOT}') )" )
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LLVM_DEPEND+=( " $(llvm_gen_dep 'llvm-core/llvm:${LLVM_SLOT}')" )
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BDEPEND="${PYTHON_DEPS}
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app-eselect/eselect-rust
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|| (
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>=sys-devel/gcc-4.7[cxx]
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>=llvm-core/clang-3.5
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)
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!system-llvm? (
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>=dev-build/cmake-3.13.4
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app-alternatives/ninja
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)
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test? ( dev-debug/gdb )
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verify-sig? ( sec-keys/openpgp-keys-rust )
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mrustc-bootstrap? (
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~dev-lang/mrustc-${MRUSTC_VERSION}
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dev-build/cmake
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sys-devel/gcc:*
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)
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!mrustc-bootstrap? ( ${RUST_DEPEND} )
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"
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DEPEND="
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>=app-arch/xz-utils-5.2
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net-misc/curl:=[http2,ssl]
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sys-libs/zlib:=
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dev-libs/openssl:0=
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system-llvm? (
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${LLVM_DEPEND[*]}
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llvm-libunwind? ( llvm-runtimes/libunwind:= )
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)
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!system-llvm? (
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!llvm-libunwind? (
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elibc_musl? ( sys-libs/libunwind:= )
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)
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)
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"
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RDEPEND="${DEPEND}
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app-eselect/eselect-rust
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dev-lang/rust-common
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sys-apps/lsb-release
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!dev-lang/rust:stable
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!dev-lang/rust-bin:stable
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"
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REQUIRED_USE="|| ( ${ALL_LLVM_TARGETS[*]} )
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miri? ( nightly )
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parallel-compiler? ( nightly )
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rust-analyzer? ( rust-src )
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test? ( ${ALL_LLVM_TARGETS[*]} )
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wasm? ( llvm_targets_WebAssembly )
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x86? ( cpu_flags_x86_sse2 )
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"
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# we don't use cmake.eclass, but can get a warning
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CMAKE_WARN_UNUSED_CLI=no
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QA_FLAGS_IGNORED="
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usr/lib/${PN}/${PV}/bin/.*
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usr/lib/${PN}/${PV}/libexec/.*
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usr/lib/${PN}/${PV}/lib/lib.*.so
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usr/lib/${PN}/${PV}/lib/rustlib/.*/bin/.*
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usr/lib/${PN}/${PV}/lib/rustlib/.*/lib/lib.*.so
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"
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QA_SONAME="
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usr/lib/${PN}/${PV}/lib/lib.*.so.*
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usr/lib/${PN}/${PV}/lib/rustlib/.*/lib/lib.*.so
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"
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QA_PRESTRIPPED="
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usr/lib/${PN}/${PV}/lib/rustlib/.*/bin/rust-llvm-dwp
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usr/lib/${PN}/${PV}/lib/rustlib/.*/lib/self-contained/crtn.o
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"
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# An rmeta file is custom binary format that contains the metadata for the crate.
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# rmeta files do not support linking, since they do not contain compiled object files.
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# so we can safely silence the warning for this QA check.
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QA_EXECSTACK="usr/lib/${PN}/${PV}/lib/rustlib/*/lib*.rlib:lib.rmeta"
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# causes double bootstrap
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RESTRICT="test"
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VERIFY_SIG_OPENPGP_KEY_PATH=/usr/share/openpgp-keys/rust.asc
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clear_vendor_checksums() {
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sed -i 's/\("files":{\)[^}]*/\1/' "vendor/${1}/.cargo-checksum.json" || die
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}
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toml_usex() {
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usex "${1}" true false
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}
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pre_build_checks() {
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local M=9216
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# multiply requirements by 1.3 if we are doing x86-multilib
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if use amd64; then
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M=$(( $(usex abi_x86_32 13 10) * ${M} / 10 ))
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fi
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M=$(( $(usex clippy 128 0) + ${M} ))
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M=$(( $(usex miri 128 0) + ${M} ))
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M=$(( $(usex rustfmt 256 0) + ${M} ))
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# add 2G if we compile llvm and 256M per llvm_target
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if ! use system-llvm; then
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M=$(( 2048 + ${M} ))
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local ltarget
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for ltarget in ${ALL_LLVM_TARGETS[@]}; do
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M=$(( $(usex ${ltarget} 256 0) + ${M} ))
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done
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fi
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M=$(( $(usex wasm 256 0) + ${M} ))
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M=$(( $(usex debug 2 1) * ${M} ))
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eshopts_push -s extglob
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if is-flagq '-g?(gdb)?([1-9])'; then
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M=$(( 15 * ${M} / 10 ))
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fi
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eshopts_pop
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M=$(( $(usex doc 256 0) + ${M} ))
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if use mrustc-bootstrap; then
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M=$(( 2 * ${M} ))
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fi
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CHECKREQS_DISK_BUILD=${M}M check-reqs_pkg_${EBUILD_PHASE}
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}
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llvm_check_deps() {
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has_version -r "llvm-core/llvm:${LLVM_SLOT}[${LLVM_TARGET_USEDEPS// /,}]"
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}
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# Is LLVM being linked against libc++?
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is_libcxx_linked() {
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local code='#include <ciso646>
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#if defined(_LIBCPP_VERSION)
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HAVE_LIBCXX
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#endif
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'
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local out=$($(tc-getCXX) ${CXXFLAGS} ${CPPFLAGS} -x c++ -E -P - <<<"${code}") || return 1
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[[ ${out} == *HAVE_LIBCXX* ]]
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}
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pkg_pretend() {
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pre_build_checks
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}
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pkg_setup() {
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if [[ ${MERGE_TYPE} != binary ]]; then
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pre_build_checks
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python-any-r1_pkg_setup
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export LIBGIT2_NO_PKG_CONFIG=1 #749381
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if tc-is-cross-compiler; then
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use system-llvm && die "USE=system-llvm not allowed when cross-compiling"
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local cross_llvm_target="$(llvm_tuple_to_target "${CBUILD}")"
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use "llvm_targets_${cross_llvm_target}" || \
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die "Must enable LLVM_TARGETS=${cross_llvm_target} matching CBUILD=${CBUILD} when cross-compiling"
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fi
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if use mrustc-bootstrap; then
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if ! tc-is-gcc; then
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die "USE=mrustc-bootstrap reqires that the build environment use GCC"
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fi
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else
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rust_pkg_setup
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fi
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if use system-llvm; then
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llvm-r1_pkg_setup
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local llvm_config="$(get_llvm_prefix)/bin/llvm-config"
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export LLVM_LINK_SHARED=1
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export RUSTFLAGS="${RUSTFLAGS} -Lnative=$("${llvm_config}" --libdir)"
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fi
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fi
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}
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src_unpack() {
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if use verify-sig ; then
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# Patch tarballs are not signed (but we trust Gentoo infra)
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verify-sig_verify_detached "${DISTDIR}"/rustc-${PV}-src.tar.xz{,.asc}
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default
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else
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default
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fi
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}
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src_prepare() {
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PATCHES=(
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"${WORKDIR}/rust-patches-${RUST_PATCH_VER}/"
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)
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default
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# We'll need to revert this after the bootstrap.
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if use mrustc-bootstrap; then
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pushd "${S}" 2>/dev/null || die
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patch -p0 < "${BROOT}"/usr/share/mrustc-${MRUSTC_VERSION}/patches/rustc-${MRUSTC_RUST_VERSION}-src.patch ||
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die "Failed to patch sources to enable bootstrap with mrustc"
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popd 2>/dev/null || die
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fi
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}
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src_configure() {
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if tc-is-cross-compiler; then
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export PKG_CONFIG_ALLOW_CROSS=1
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export PKG_CONFIG_PATH="${ESYSROOT}/usr/$(get_libdir)/pkgconfig"
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export OPENSSL_INCLUDE_DIR="${ESYSROOT}/usr/include"
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export OPENSSL_LIB_DIR="${ESYSROOT}/usr/$(get_libdir)"
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fi
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filter-lto # https://bugs.gentoo.org/862109 https://bugs.gentoo.org/866231
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local rust_target="" rust_targets="" arch_cflags
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# Collect rust target names to compile standard libs for all ABIs.
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for v in $(multilib_get_enabled_abi_pairs); do
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rust_targets+=",\"$(rust_abi $(get_abi_CHOST ${v##*.}))\""
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done
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if use wasm; then
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rust_targets+=",\"wasm32-unknown-unknown\""
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if use system-llvm; then
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# un-hardcode rust-lld linker for this target
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# https://bugs.gentoo.org/715348
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sed -i '/linker:/ s/rust-lld/wasm-ld/' compiler/rustc_target/src/spec/wasm_base.rs || die
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fi
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fi
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rust_targets="${rust_targets#,}"
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# cargo and rustdoc are mandatory and should always be included
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local tools='"cargo","rustdoc", "rust-demangler"'
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use clippy && tools+=',"clippy"'
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use miri && tools+=',"miri"'
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use rustfmt && tools+=',"rustfmt"'
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use rust-analyzer && tools+=',"rust-analyzer"'
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use rust-src && tools+=',"src"'
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if use mrustc-bootstrap; then
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local rust_stage0_root="${WORKDIR}/bootstrap/rust-${PV}"
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else
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local rust_stage0_root="$(${RUSTC} --print sysroot || die "Can't determine rust's sysroot")"
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# in case of prefix it will be already prefixed, as --print sysroot returns full path
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[[ -d ${rust_stage0_root} ]] || die "${rust_stage0_root} is not a directory"
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fi
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rust_target="$(rust_abi)"
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rust_build="$(rust_abi "${CBUILD}")"
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rust_host="$(rust_abi "${CHOST}")"
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RUST_EXPERIMENTAL_TARGETS=()
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for _x in "${!ALL_RUST_EXPERIMENTAL_TARGETS[@]}"; do
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if [[ ${ALL_RUST_EXPERIMENTAL_TARGETS[${_x}]} == 1 ]] && use ${_x} ; then
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RUST_EXPERIMENTAL_TARGETS+=( ${_x#llvm_targets_} )
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fi
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done
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RUST_EXPERIMENTAL_TARGETS=${RUST_EXPERIMENTAL_TARGETS[@]}
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local cm_btype="$(usex debug DEBUG RELEASE)"
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cat <<- _EOF_ > "${S}"/config.toml
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changelog-seen = 2
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[llvm]
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download-ci-llvm = false
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optimize = $(toml_usex !debug)
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release-debuginfo = $(toml_usex debug)
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assertions = $(toml_usex debug)
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ninja = true
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targets = "${LLVM_TARGETS// /;}"
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experimental-targets = "${RUST_EXPERIMENTAL_TARGETS// /;}"
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link-shared = $(toml_usex system-llvm)
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$(if is_libcxx_linked; then
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# https://bugs.gentoo.org/732632
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echo "use-libcxx = true"
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echo "static-libstdcpp = false"
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fi)
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$(case "${rust_target}" in
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i586-*-linux-*)
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# https://github.com/rust-lang/rust/issues/93059
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echo 'cflags = "-fcf-protection=none"'
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echo 'cxxflags = "-fcf-protection=none"'
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echo 'ldflags = "-fcf-protection=none"'
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;;
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*)
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;;
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esac)
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enable-warnings = false
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[llvm.build-config]
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CMAKE_VERBOSE_MAKEFILE = "ON"
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$(if ! tc-is-cross-compiler; then
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# When cross-compiling, LLVM is compiled twice, once for host and
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# once for target. Unfortunately, this build configuration applies
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# to both, which means any flags applicable to one target but not
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# the other will break. Conditionally disable respecting user
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# flags when cross-compiling.
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echo "CMAKE_C_FLAGS_${cm_btype} = \"${CFLAGS}\""
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echo "CMAKE_CXX_FLAGS_${cm_btype} = \"${CXXFLAGS}\""
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echo "CMAKE_EXE_LINKER_FLAGS_${cm_btype} = \"${LDFLAGS}\""
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echo "CMAKE_MODULE_LINKER_FLAGS_${cm_btype} = \"${LDFLAGS}\""
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echo "CMAKE_SHARED_LINKER_FLAGS_${cm_btype} = \"${LDFLAGS}\""
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echo "CMAKE_STATIC_LINKER_FLAGS_${cm_btype} = \"${ARFLAGS}\""
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fi)
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[build]
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|
build-stage = 2
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test-stage = 2
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build = "${rust_build}"
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host = ["${rust_host}"]
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target = [${rust_targets}]
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cargo = "${rust_stage0_root}/bin/cargo"
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rustc = "${rust_stage0_root}/bin/rustc"
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|
rustfmt = "${rust_stage0_root}/bin/rustfmt"
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docs = $(toml_usex doc)
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|
compiler-docs = false
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|
submodules = false
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|
python = "${EPYTHON}"
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|
locked-deps = true
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|
vendor = true
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|
extended = true
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|
tools = [${tools}]
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verbose = 2
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|
sanitizers = false
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profiler = true
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cargo-native-static = false
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[install]
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prefix = "${EPREFIX}/usr/lib/${PN}/${PV}"
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sysconfdir = "etc"
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docdir = "share/doc/rust"
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bindir = "bin"
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libdir = "lib"
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|
mandir = "share/man"
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|
[rust]
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|
# https://github.com/rust-lang/rust/issues/54872
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|
codegen-units-std = 1
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|
optimize = true
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|
debug = $(toml_usex debug)
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|
debug-assertions = $(toml_usex debug)
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|
debug-assertions-std = $(toml_usex debug)
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|
debuginfo-level = $(usex debug 2 0)
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|
debuginfo-level-rustc = $(usex debug 2 0)
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|
debuginfo-level-std = $(usex debug 2 0)
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|
debuginfo-level-tools = $(usex debug 2 0)
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|
debuginfo-level-tests = 0
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|
backtrace = true
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|
incremental = false
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|
$(if ! tc-is-cross-compiler; then
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echo "default-linker = \"${CHOST}-cc\""
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|
fi)
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|
parallel-compiler = $(toml_usex parallel-compiler)
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|
channel = "$(usex nightly nightly stable)"
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|
description = "gentoo"
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|
rpath = true
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|
verbose-tests = true
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|
optimize-tests = $(toml_usex !debug)
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|
codegen-tests = true
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|
dist-src = false
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|
remap-debuginfo = true
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|
lld = $(usex system-llvm false $(toml_usex wasm))
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|
# only deny warnings if doc+wasm are NOT requested, documenting stage0 wasm std fails without it
|
|
# https://github.com/rust-lang/rust/issues/74976
|
|
# https://github.com/rust-lang/rust/issues/76526
|
|
deny-warnings = $(usex wasm $(usex doc false true) true)
|
|
backtrace-on-ice = true
|
|
jemalloc = false
|
|
lto = "$(usex lto fat off)"
|
|
[dist]
|
|
src-tarball = false
|
|
compression-formats = ["xz"]
|
|
compression-profile = "balanced"
|
|
_EOF_
|
|
|
|
for v in $(multilib_get_enabled_abi_pairs); do
|
|
rust_target=$(rust_abi $(get_abi_CHOST ${v##*.}))
|
|
arch_cflags="$(get_abi_CFLAGS ${v##*.})"
|
|
|
|
export CFLAGS_${rust_target//-/_}="${arch_cflags}"
|
|
|
|
cat <<- _EOF_ >> "${S}"/config.toml
|
|
[target.${rust_target}]
|
|
ar = "$(tc-getAR)"
|
|
cc = "$(tc-getCC)"
|
|
cxx = "$(tc-getCXX)"
|
|
linker = "$(tc-getCC)"
|
|
ranlib = "$(tc-getRANLIB)"
|
|
llvm-libunwind = "$(usex llvm-libunwind $(usex system-llvm system in-tree) no)"
|
|
_EOF_
|
|
if use system-llvm; then
|
|
cat <<- _EOF_ >> "${S}"/config.toml
|
|
llvm-config = "$(get_llvm_prefix)/bin/llvm-config"
|
|
_EOF_
|
|
fi
|
|
# by default librustc_target/spec/linux_musl_base.rs sets base.crt_static_default = true;
|
|
# but we patch it and set to false here as well
|
|
if use elibc_musl; then
|
|
cat <<- _EOF_ >> "${S}"/config.toml
|
|
crt-static = false
|
|
_EOF_
|
|
fi
|
|
done
|
|
if use wasm; then
|
|
cat <<- _EOF_ >> "${S}"/config.toml
|
|
[target.wasm32-unknown-unknown]
|
|
linker = "$(usex system-llvm lld rust-lld)"
|
|
# wasm target does not have profiler_builtins https://bugs.gentoo.org/848483
|
|
profiler = false
|
|
_EOF_
|
|
fi
|
|
|
|
if [[ -n ${I_KNOW_WHAT_I_AM_DOING_CROSS} ]]; then # whitespace intentionally shifted below
|
|
# experimental cross support
|
|
# discussion: https://bugs.gentoo.org/679878
|
|
# TODO: c*flags, clang, system-llvm, cargo.eclass target support
|
|
# it would be much better if we could split out stdlib
|
|
# complilation to separate ebuild and abuse CATEGORY to
|
|
# just install to /usr/lib/rustlib/<target>
|
|
|
|
# extra targets defined as a bash array
|
|
# spec format: <LLVM target>:<rust-target>:<CTARGET>
|
|
# best place would be /etc/portage/env/dev-lang/rust
|
|
# Example:
|
|
# RUST_CROSS_TARGETS=(
|
|
# "AArch64:aarch64-unknown-linux-gnu:aarch64-unknown-linux-gnu"
|
|
# )
|
|
# no extra hand holding is done, no target transformations, all
|
|
# values are passed as-is with just basic checks, so it's up to user to supply correct values
|
|
# valid rust targets can be obtained with
|
|
# rustc --print target-list
|
|
# matching cross toolchain has to be installed
|
|
# matching LLVM_TARGET has to be enabled for both rust and llvm (if using system one)
|
|
# only gcc toolchains installed with crossdev are checked for now.
|
|
|
|
# BUG: we can't pass host flags to cross compiler, so just filter for now
|
|
# BUG: this should be more fine-grained.
|
|
filter-flags '-mcpu=*' '-march=*' '-mtune=*'
|
|
|
|
local cross_target_spec
|
|
for cross_target_spec in "${RUST_CROSS_TARGETS[@]}";do
|
|
# extracts first element form <LLVM target>:<rust-target>:<CTARGET>
|
|
local cross_llvm_target="${cross_target_spec%%:*}"
|
|
# extracts toolchain triples, <rust-target>:<CTARGET>
|
|
local cross_triples="${cross_target_spec#*:}"
|
|
# extracts first element after before : separator
|
|
local cross_rust_target="${cross_triples%%:*}"
|
|
# extracts last element after : separator
|
|
local cross_toolchain="${cross_triples##*:}"
|
|
use llvm_targets_${cross_llvm_target} || die "need llvm_targets_${cross_llvm_target} target enabled"
|
|
command -v ${cross_toolchain}-gcc > /dev/null 2>&1 || die "need ${cross_toolchain} cross toolchain"
|
|
|
|
cat <<- _EOF_ >> "${S}"/config.toml
|
|
[target.${cross_rust_target}]
|
|
ar = "${cross_toolchain}-ar"
|
|
cc = "${cross_toolchain}-gcc"
|
|
cxx = "${cross_toolchain}-g++"
|
|
linker = "${cross_toolchain}-gcc"
|
|
ranlib = "${cross_toolchain}-ranlib"
|
|
_EOF_
|
|
if use system-llvm; then
|
|
cat <<- _EOF_ >> "${S}"/config.toml
|
|
llvm-config = "$(get_llvm_prefix)/bin/llvm-config"
|
|
_EOF_
|
|
fi
|
|
if [[ "${cross_toolchain}" == *-musl* ]]; then
|
|
cat <<- _EOF_ >> "${S}"/config.toml
|
|
musl-root = "$(${cross_toolchain}-gcc -print-sysroot)/usr"
|
|
_EOF_
|
|
fi
|
|
|
|
# append cross target to "normal" target list
|
|
# example 'target = ["powerpc64le-unknown-linux-gnu"]'
|
|
# becomes 'target = ["powerpc64le-unknown-linux-gnu","aarch64-unknown-linux-gnu"]'
|
|
|
|
rust_targets="${rust_targets},\"${cross_rust_target}\""
|
|
sed -i "/^target = \[/ s#\[.*\]#\[${rust_targets}\]#" config.toml || die
|
|
|
|
ewarn
|
|
ewarn "Enabled ${cross_rust_target} rust target"
|
|
ewarn "Using ${cross_toolchain} cross toolchain"
|
|
ewarn
|
|
if ! has_version -b 'sys-devel/binutils[multitarget]' ; then
|
|
ewarn "'sys-devel/binutils[multitarget]' is not installed"
|
|
ewarn "'strip' will be unable to strip cross libraries"
|
|
ewarn "cross targets will be installed with full debug information"
|
|
ewarn "enable 'multitarget' USE flag for binutils to be able to strip object files"
|
|
ewarn
|
|
ewarn "Alternatively llvm-strip can be used, it supports stripping any target"
|
|
ewarn "define STRIP=\"llvm-strip\" to use it (experimental)"
|
|
ewarn
|
|
fi
|
|
done
|
|
fi # I_KNOW_WHAT_I_AM_DOING_CROSS
|
|
|
|
einfo "Rust configured with the following flags:"
|
|
echo
|
|
echo RUSTFLAGS="\"${RUSTFLAGS}\""
|
|
echo RUSTFLAGS_BOOTSTRAP="\"${RUSTFLAGS_BOOTSTRAP}\""
|
|
echo RUSTFLAGS_NOT_BOOTSTRAP="\"${RUSTFLAGS_NOT_BOOTSTRAP}\""
|
|
echo MAGIC_EXTRA_RUSTFLAGS="\"${MAGIC_EXTRA_RUSTFLAGS}\""
|
|
env | grep "CARGO_TARGET_.*_RUSTFLAGS="
|
|
env | grep "CFLAGS_.*"
|
|
echo
|
|
einfo "config.toml contents:"
|
|
cat "${S}"/config.toml || die
|
|
echo
|
|
}
|
|
|
|
# Build a very minimal llvm that we can use for bootstrap rustc codegen
|
|
llvm_bootstrap() {
|
|
# Reference ${P}/src/bootstrap/native.rs for these values
|
|
local llvm_cmake_opts=(
|
|
"-G Ninja"
|
|
"-DLLVM_TARGET_ARCH=${CFG_COMPILER_HOST_TRIPLE%%-*}"
|
|
"-DLLVM_DEFAULT_TARGET_TRIPLE=${CFG_COMPILER_HOST_TRIPLE}"
|
|
#;Mips;PowerPC;SystemZ;JSBackend;MSP430;Sparc;NVPTX
|
|
"-DLLVM_TARGETS_TO_BUILD=${BOOTSTRAP_LLVM_TARGETS:=X86;ARM;AArch64}"
|
|
"-DLLVM_ENABLE_ASSERTIONS=OFF"
|
|
"-DLLVM_INCLUDE_EXAMPLES=OFF"
|
|
"-DLLVM_INCLUDE_TESTS=OFF"
|
|
"-DLLVM_INCLUDE_DOCS=OFF"
|
|
"-DLLVM_INCLUDE_BENCHMARKS=OFF"
|
|
"-DLLVM_ENABLE_ZLIB=OFF"
|
|
"-DLLVM_ENABLE_TERMINFO=OFF"
|
|
"-DLLVM_ENABLE_LIBEDIT=OFF"
|
|
"-DCMAKE_CXX_COMPILER=$(tc-getCXX)"
|
|
"-DCMAKE_C_COMPILER=$(tc-getCC)"
|
|
"-DCMAKE_BUILD_TYPE=Release"
|
|
)
|
|
|
|
if [[ -z "${LLVM_CMAKE_OPTS_EXTRA}" ]]; then
|
|
llvm_cmake_opts+=( "${LLVM_CMAKE_OPTS_EXTRA}")
|
|
fi
|
|
|
|
elog "Building bootstrap llvm ..."
|
|
|
|
mkdir -p "${WORKDIR}/bootstrap/llvm" || die
|
|
pushd "${WORKDIR}/bootstrap/llvm" 2>/dev/null || die
|
|
edo cmake ${llvm_cmake_opts[*]} "${S}/src/llvm-project/llvm"
|
|
eninja || die "Failed to build bootstrap llvm"
|
|
popd 2>/dev/null || die
|
|
}
|
|
|
|
# High level steps:
|
|
# Our system mrustc package has built stdlib for our current platform.
|
|
# - Step 1: Use system-installed mrustc, (m)rust(c) stdlib, and minicargo to
|
|
# bootstrap a `cargo` and `rustc` (mrustc-stage0)
|
|
# - Step 2: Use minicargo and the built `rustc` to build a working `sysroot`
|
|
# (includes `std`, `panic_unwind``, `test`, etc.) (mrustc-stage0)
|
|
# - Step 3: Build build libs again (this time using `cargo` and `rustc`) (mrustc-stage1)
|
|
# - Step 4: Build a `rustc` using those libs (mrustc-stage1)
|
|
# - Done so there's an optimised rustc arollvm_cmake_optsund (mrustc is bad at codegen)
|
|
# - Step 5: Build `libstd` with this `rustc` (mrustc-stage2)
|
|
# - Needed to match ABIs
|
|
# Stages:
|
|
# - mrustc-stage0: mrustc-built cargo and rustc
|
|
# - mrustc-stage1: rustc and sysroot built with mrustc-stage0
|
|
# - mrustc-stage2: rustc from stage1 with sysroot built with stage0
|
|
# See:
|
|
# - https://github.com/thepowersgang/mrustc/blob/master/run_rustc/Makefile
|
|
# - https://github.com/thepowersgang/mrustc/blob/master/TestRustcBootstrap.sh
|
|
# - Upstream Windows .cmd files are also a good reference for early bootstrap
|
|
mrustc_bootstrap() {
|
|
export RUSTC_BOOTSTRAP=1 # Possibly the only intended use of this variable in ::gentoo
|
|
# export these variables now and unset them at the end of the function so they don't leak
|
|
# into the rest of the build.
|
|
export CFG_COMPILER_HOST_TRIPLE="$(rust_abi)"
|
|
export CFG_RELEASE="${MRUSTC_RUST_VERSION}" # Let's pretend we're 1.74.0
|
|
export CFG_RELEASE_CHANNEL="stable"
|
|
export CFG_VERSION="${MRUSTC_RUST_VERSION}-stable-mrustc"
|
|
export CFG_PREFIX="mrustc"
|
|
export CFG_LIBDIR_RELATIVE="lib"
|
|
export RUSTC_INSTALL_BINDIR="bin"
|
|
export REAL_LIBRARY_PATH_VAR="LD_LIBRARY_PATH"
|
|
|
|
# These flags are used in every invocation of our bootstrap `cargo`.
|
|
local cargo_flags="--target ${CFG_COMPILER_HOST_TRIPLE} -j $(makeopts_jobs) --release --verbose"
|
|
|
|
if use system-llvm; then
|
|
export LLVM_CONFIG="$(get_llvm_prefix)/bin/llvm-config"
|
|
else
|
|
llvm_bootstrap
|
|
export LLVM_CONFIG="${WORKDIR}/bootstrap/llvm/bin/llvm-config"
|
|
fi
|
|
|
|
# define the mrustc sysroot and common minicargo arguments.
|
|
local mrustc_sysroot="${BROOT}/usr/lib/rust/mrustc-${MRUSTC_VERSION}/lib/rustlib/${CFG_COMPILER_HOST_TRIPLE}/lib"
|
|
local minicargo_common_args=(
|
|
"-L" "${mrustc_sysroot}"
|
|
"-j" "$(makeopts_jobs)"
|
|
"--vendor-dir" "${S}/vendor"
|
|
"--manifest-overrides"
|
|
"${BROOT}/usr/share/mrustc-${MRUSTC_VERSION}/patches/rustc-${MRUSTC_RUST_VERSION}-overrides.toml"
|
|
)
|
|
# There's a very good chance that minicargo and mrustc are not in the PATH.
|
|
if ! command -v minicargo &> /dev/null; then
|
|
export PATH="${BROOT}/usr/lib/rust/mrustc-${MRUSTC_VERSION}/bin:${PATH}"
|
|
fi
|
|
# Sanity check our bootstrap compiler & stdlib.
|
|
elog "Sanity checking mrustc and stdlib ..."
|
|
edo mrustc "${S}/tests/ui/hello_world/main.rs" -L "${mrustc_sysroot}" -o "${T}"/hello -g
|
|
"${T}"/hello || die "Failed to run hello_world"
|
|
# Seems fine, let's build some tools!
|
|
|
|
# Step 1: Build a `cargo` and `rustc` using system-installed mrustc
|
|
# Anything we produce is going to be terribly unoptimised; mrustc does not do fantastic codegen.
|
|
# It's good enough to bootstrap the "real" rustc though.
|
|
elog "Building bootstrap cargo and rustc using mrustc and minicargo (mrustc-stage0) ..."
|
|
local stage0="${WORKDIR}/bootstrap/mrustc-stage0"
|
|
mkdir -p "${stage0}" || die
|
|
edo minicargo "${S}"/src/tools/cargo --output-dir "${stage0}"/cargo-build ${minicargo_common_args[*]}
|
|
"${stage0}"/cargo-build/cargo --version || die "Bootstrap cargo failed basic sanity check"
|
|
edo minicargo "${S}"/compiler/rustc --output-dir "${stage0}"/rustc-build ${minicargo_common_args[*]} \
|
|
--features llvm
|
|
"${stage0}"/rustc-build/rustc_main --version || die "Bootstrap rustc failed basic sanity check"
|
|
# minicargo has special-casing for `rustc` so we need to rename it.
|
|
mv "${stage0}"/rustc-build/rustc_main "${stage0}"/rustc-build/rustc || die "Failed to rename rustc_main to rustc"
|
|
# rustc wants these here
|
|
mkdir -p "${stage0}"/codegen-backends || die
|
|
mv "${stage0}"/rustc-build/librustc_codegen_llvm.* "${stage0}"/codegen-backends || die
|
|
|
|
# Step 2: use the bootstrapped rustc to build sysroot; we need to use `minicargo` for this -
|
|
# mrustc does not accept all of the arguments that rustc does, even with the rustc_proxy wrapper.
|
|
# `--script-overrides`: If the overrides are available, build scripts (and build-deps) are not built
|
|
# which is good since we don't have a working compiler yet, and can't build them.
|
|
|
|
local stage0_sysroot_lib="${stage0}/lib/rustlib/${CFG_COMPILER_HOST_TRIPLE}/lib"
|
|
# minicargo <= 0.11.2 doesn't create this directory and silently fails, besides it's better to be explicit, right?
|
|
mkdir -p "${stage0_sysroot_lib}" || die "Failed to create stage0 directory"
|
|
|
|
elog "Building 'sysroot' using bootstrap rustc (mrustc-stage0) ..."
|
|
edo env MRUSTC_PATH="${stage0}/rustc-build/rustc" minicargo -j $(makeopts_jobs) --vendor-dir "${S}"/vendor \
|
|
--script-overrides "${BROOT}/usr/share/mrustc-0.11.2/script-overrides/stable-${MRUSTC_RUST_VERSION}-linux/" \
|
|
--output-dir "${stage0_sysroot_lib}" "${S}"/library/sysroot ||
|
|
die "Failed to build sysroot with bootstrap rust (mrustc-stage0)"
|
|
|
|
elog "Sanity checking sysroot and rustc ..."
|
|
mkdir -p "${T}"/stage0-hello || die
|
|
edo "${stage0}"/rustc-build/rustc -L "${stage0_sysroot_lib}" -g "${S}/tests/ui/hello_world/main.rs" \
|
|
-o "${T}"/stage0-hello/hello
|
|
"${T}"/stage0-hello/hello || die "Failed to run hello_world built with bootstrap rust stage0"
|
|
|
|
elog "mrustc bootstrap stage0 complete!"
|
|
|
|
# Step 3: Build a "proper" libstd, including dynamic libs using our bootstrap cargo and rustc.
|
|
elog "Building 'sysroot' with the stage0 rustc (mrustc-stage1) ..."
|
|
local stage1="${WORKDIR}/bootstrap/mrustc-stage1"
|
|
local stage1_sysroot_lib="${stage1}/lib/rustlib/${CFG_COMPILER_HOST_TRIPLE}/lib"
|
|
mkdir -p "${stage1_sysroot_lib}" || die "Failed to create stage1 directory"
|
|
mkdir -p "${stage1}/bin" || die
|
|
|
|
# Simplified to avoid calling rustc_proxy; We don't need stage1 rustc until after this is built...
|
|
edo env RUSTFLAGS="-Z force-unstable-if-unmarked" CARGO_TARGET_DIR="${stage1}/sysroot-build" \
|
|
RUSTC="${stage0}/rustc-build/rustc" "${stage0}"/cargo-build/cargo build ${cargo_flags} \
|
|
--manifest-path "${S}/library/sysroot/Cargo.toml" --features panic-unwind
|
|
|
|
# Move the built libs into the sysroot libdir.
|
|
mv "${stage1}/sysroot-build/${CFG_COMPILER_HOST_TRIPLE}/release/deps"/*.{rlib,rmeta,so} \
|
|
"${stage1_sysroot_lib}" || die "Failed to move stage1 libs to stage1 sysroot"
|
|
|
|
# We need to copy the stage0 rustc to the stage1 sysroot; this "updates" the sysroot location and enables
|
|
# resolution of stage1 libs. (run `rustc --print sysroot` on stage0 and stage1 rustc to verify)
|
|
cp "${stage0}/rustc-build/rustc" "${stage1}/bin/rustc" || die "Failed to copy rustc to stage1 sysroot"
|
|
|
|
# Step 4: Build `rustc` with itself, so we have a rustc with the right ABI.
|
|
# This will be our final `rustc` for the bootstrap process.
|
|
elog "Building rustc with stage1 libs (mrustc-stage1) ..."
|
|
mkdir -p "${stage1}/rustc-build" || die
|
|
edo env RUSTFLAGS="-Z force-unstable-if-unmarked -C link_args=-Wl,-rpath,\$ORIGIN/../lib" \
|
|
LD_LIBRARY_PATH="${stage2_sysroot_lib}" CARGO_TARGET_DIR="${stage1}/rustc-build" \
|
|
RUSTC="${stage1}/bin/rustc" TMPDIR="${T}" "${stage0}"/cargo-build/cargo build ${cargo_flags} \
|
|
--manifest-path "${S}/compiler/rustc/Cargo.toml" --features llvm
|
|
|
|
# Step 5: Build `sysroot` with this `rustc` - Needed to match ABI
|
|
# We need to use the previous sysroot; we could reuse that dir but it's easier to just copy it.
|
|
elog "Building final 'sysroot' with the final rustc (mrustc-stage2) ..."
|
|
local stage2="${WORKDIR}/bootstrap/mrustc-stage2"
|
|
local stage2_sysroot_lib="${stage2}/lib/rustlib/${CFG_COMPILER_HOST_TRIPLE}/lib"
|
|
mkdir -p "${stage2_sysroot_lib}" || die "Failed to create stage2 directory"
|
|
mkdir -p "${stage2}/bin" || die
|
|
|
|
# Copy required files from stage1 to stage2 sysroot
|
|
cp "${stage1}/rustc-build/${CFG_COMPILER_HOST_TRIPLE}"/release/rustc-main "${stage2}/bin/rustc_binary" ||
|
|
die "Failed to copy final rustc to stage2 sysroot"
|
|
cp "${stage1}/rustc-build/${CFG_COMPILER_HOST_TRIPLE}"/release/librustc_driver.so "${stage2}/lib" ||
|
|
die "Failed to copy librustc_driver to sysroot"
|
|
cp "${stage1}/rustc-build/${CFG_COMPILER_HOST_TRIPLE}"/release/deps/*.{rlib,so} "${stage2_sysroot_lib}" ||
|
|
die "Failed to copy final rustc libs to stage2 sysroot"
|
|
cp "${stage1_sysroot_lib}"/* "${stage2_sysroot_lib}" || die "Failed to copy stage1 so files to stage2 sysroot"
|
|
|
|
# There's a magic script used in place of rustc so that libs can be found
|
|
cat <<- EOF > "${stage2}/bin/rustc" || die "Failed to create rustc wrapper"
|
|
#!/bin/sh
|
|
LD_LIBRARY_PATH="${stage2}/lib:${stage2_sysroot_lib}" ${stage2}/bin/rustc_binary "\$@"
|
|
EOF
|
|
chmod +x "${stage2}/bin/rustc" || die "Failed to make rustc wrapper executable"
|
|
|
|
# Use rustc to build 'sysroot'; this is the final step in the bootstrap process.
|
|
# rpath probably isn't needed here, but it doesn't hurt.
|
|
edo env RUSTFLAGS="-Z force-unstable-if-unmarked -C link_args=-Wl,-rpath,\$ORIGIN/../lib" \
|
|
CARGO_TARGET_DIR="${stage2}/stdlib-build" RUSTC="${stage2}/bin/rustc" \
|
|
"${stage0}"/cargo-build/cargo build ${cargo_flags} --manifest-path "${S}/library/sysroot/Cargo.toml" \
|
|
--features panic-unwind
|
|
|
|
# Build our final output sysroot
|
|
local output="${WORKDIR}/bootstrap/rust-${PV}"
|
|
local output_sysroot_lib="${output}/lib/rustlib/${CFG_COMPILER_HOST_TRIPLE}/lib"
|
|
mkdir -p "${output_sysroot_lib}" || die "Failed to create output directory"
|
|
mkdir -p "${output}/bin" || die "Failed to create output directory"
|
|
|
|
# Copy our various output files into the output sysroot
|
|
# rustc
|
|
cp "${stage1}/rustc-build/${CFG_COMPILER_HOST_TRIPLE}"/release/rustc-main "${output}/bin/rustc_binary" ||
|
|
die "Failed to copy final rustc to output"
|
|
cp "${stage1}/rustc-build/${CFG_COMPILER_HOST_TRIPLE}"/release/librustc_driver.so "${output}/lib" ||
|
|
die "Failed to copy librustc_driver to output"
|
|
cp "${stage1}/rustc-build/${CFG_COMPILER_HOST_TRIPLE}"/release/deps/*.{rlib,so} "${output_sysroot_lib}" ||
|
|
die "Failed to copy final rustc libs to output"
|
|
# cargo; no need to build an optimised cargo if we're using this to build a complelety new Rust.
|
|
cp "${stage0}/cargo-build/cargo" "${output}/bin/cargo" || die "Failed to copy cargo to output"
|
|
# libs
|
|
mv "${stage2}/stdlib-build/${CFG_COMPILER_HOST_TRIPLE}/release/deps"/*.{rlib,rmeta,so} "${output_sysroot_lib}" ||
|
|
die "Failed to copy stage2 libs to output"
|
|
# Our trusty rustc wrapper
|
|
cat <<- EOF > "${output}/bin/rustc" || die "Failed to create rustc wrapper"
|
|
#!/bin/sh
|
|
LD_LIBRARY_PATH="${output}/lib:${output_sysroot_lib}" ${output}/bin/rustc_binary "\$@"
|
|
EOF
|
|
chmod +x "${output}/bin/rustc" || die "Failed to make rustc wrapper executable"
|
|
|
|
# Perform a sanity check on the final Rust.
|
|
mkdir -p "${T}"/output-hello || die
|
|
edo "${output}/bin/rustc" -L "${output_sysroot_lib}" -g "${S}/tests/ui/hello_world/main.rs" \
|
|
-o "${T}"/output-hello/hello
|
|
"${T}"/output-hello/hello || die "Failed to run hello_world built with bootstrapped Rust"
|
|
|
|
elog "Successfully bootstrapped Rust using mrustc!"
|
|
|
|
# Note: The Rust sysroot that we've produced is pretty close to what we'd expect from a normal Rust build.
|
|
# If someone was so inclined they could build an optimised cargo using the stage2 rustc and sysroot,
|
|
# and install the output directly. This is untested, as I'm sure there's more to it than that.
|
|
# I'm satisfied with being able to build Rust normally at this point.
|
|
|
|
# Tidy up the Rust sources; revert mrustc changes so Rust can be built normally.
|
|
pushd "${S}" 2>/dev/null || die
|
|
patch -R -p0 < "${BROOT}"/usr/share/mrustc-${MRUSTC_VERSION}/patches/rustc-${MRUSTC_RUST_VERSION}-src.patch ||
|
|
die "Failed to revert mrustc patches"
|
|
popd 2>/dev/null || die
|
|
|
|
# Tidy up any environment variables we've set in the bootstrap process.
|
|
unset CFG_COMPILER_HOST_TRIPLE CFG_RELEASE CFG_RELEASE_CHANNEL CFG_PREFIX CFG_VERSION
|
|
unset CFG_LIBDIR_RELATIVE LLVM_CONFIG REAL_LIBRARY_PATH_VAR RUSTFLAGS RUSTC_BOOTSTRAP RUSTC_INSTALL_BINDIR
|
|
}
|
|
|
|
src_compile() {
|
|
use mrustc-bootstrap && mrustc_bootstrap
|
|
RUST_BACKTRACE=1 "${EPYTHON}" ./x.py build -v --config="${S}"/config.toml -j$(makeopts_jobs) || die
|
|
}
|
|
|
|
src_test() {
|
|
# https://rustc-dev-guide.rust-lang.org/tests/intro.html
|
|
|
|
# those are basic and codegen tests.
|
|
local tests=(
|
|
codegen
|
|
codegen-units
|
|
compile-fail
|
|
incremental
|
|
mir-opt
|
|
pretty
|
|
run-make
|
|
)
|
|
|
|
# fails if llvm is not built with ALL targets.
|
|
# and known to fail with system llvm sometimes.
|
|
use system-llvm || tests+=( assembly )
|
|
|
|
# fragile/expensive/less important tests
|
|
# or tests that require extra builds
|
|
# TODO: instead of skipping, just make some nonfatal.
|
|
if [[ ${ERUST_RUN_EXTRA_TESTS:-no} != no ]]; then
|
|
tests+=(
|
|
rustdoc
|
|
rustdoc-js
|
|
rustdoc-js-std
|
|
rustdoc-ui
|
|
run-make-fulldeps
|
|
ui
|
|
ui-fulldeps
|
|
)
|
|
fi
|
|
|
|
local i failed=()
|
|
einfo "rust_src_test: enabled tests ${tests[@]/#/src/test/}"
|
|
for i in "${tests[@]}"; do
|
|
local t="src/test/${i}"
|
|
einfo "rust_src_test: running ${t}"
|
|
if ! RUST_BACKTRACE=1 "${EPYTHON}" ./x.py test -vv --config="${S}"/config.toml \
|
|
-j$(makeopts_jobs) --no-doc --no-fail-fast "${t}"
|
|
then
|
|
failed+=( "${t}" )
|
|
eerror "rust_src_test: ${t} failed"
|
|
fi
|
|
done
|
|
|
|
if [[ ${#failed[@]} -ne 0 ]]; then
|
|
eerror "rust_src_test: failure summary: ${failed[@]}"
|
|
die "aborting due to test failures"
|
|
fi
|
|
}
|
|
|
|
src_install() {
|
|
DESTDIR="${D}" "${EPYTHON}" ./x.py install -v --config="${S}"/config.toml -j$(makeopts_jobs) || die
|
|
|
|
# bug #689562, #689160
|
|
rm -v "${ED}/usr/lib/${PN}/${PV}/etc/bash_completion.d/cargo" || die
|
|
rmdir -v "${ED}/usr/lib/${PN}/${PV}"/etc{/bash_completion.d,} || die
|
|
|
|
local symlinks=(
|
|
cargo
|
|
rustc
|
|
rustdoc
|
|
rust-gdb
|
|
rust-gdbgui
|
|
rust-lldb
|
|
rust-demangler
|
|
)
|
|
|
|
use clippy && symlinks+=( clippy-driver cargo-clippy )
|
|
use miri && symlinks+=( miri cargo-miri )
|
|
use rustfmt && symlinks+=( rustfmt cargo-fmt )
|
|
use rust-analyzer && symlinks+=( rust-analyzer )
|
|
|
|
einfo "installing eselect-rust symlinks and paths: ${symlinks[@]}"
|
|
local i
|
|
for i in "${symlinks[@]}"; do
|
|
# we need realpath on /usr/bin/* symlink return version-appended binary path.
|
|
# so /usr/bin/rustc should point to /usr/lib/rust/<ver>/bin/rustc-<ver>
|
|
# need to fix eselect-rust to remove this hack.
|
|
local ver_i="${i}-${PV}"
|
|
if [[ -f "${ED}/usr/lib/${PN}/${PV}/bin/${i}" ]]; then
|
|
einfo "Installing ${i} symlink"
|
|
ln -v "${ED}/usr/lib/${PN}/${PV}/bin/${i}" "${ED}/usr/lib/${PN}/${PV}/bin/${ver_i}" || die
|
|
else
|
|
ewarn "${i} symlink requested, but source file not found"
|
|
ewarn "please report this"
|
|
fi
|
|
dosym "../lib/${PN}/${PV}/bin/${ver_i}" "/usr/bin/${ver_i}"
|
|
done
|
|
|
|
# symlinks to switch components to active rust in eselect
|
|
dosym "${PV}/lib" "/usr/lib/${PN}/lib-${PV}"
|
|
use rust-analyzer && dosym "${PV}/libexec" "/usr/lib/${PN}/libexec-${PV}"
|
|
dosym "${PV}/share/man" "/usr/lib/${PN}/man-${PV}"
|
|
dosym "rust/${PV}/lib/rustlib" "/usr/lib/rustlib-${PV}"
|
|
dosym "../../lib/${PN}/${PV}/share/doc/rust" "/usr/share/doc/${P}"
|
|
|
|
newenvd - "50${P}" <<-_EOF_
|
|
MANPATH="${EPREFIX}/usr/lib/rust/man-${PV}"
|
|
_EOF_
|
|
|
|
rm -rf "${ED}/usr/lib/${PN}/${PV}"/*.old || die
|
|
rm -rf "${ED}/usr/lib/${PN}/${PV}/bin"/*.old || die
|
|
rm -rf "${ED}/usr/lib/${PN}/${PV}/doc"/*.old || die
|
|
|
|
# note: eselect-rust adds EROOT to all paths below
|
|
cat <<-_EOF_ > "${T}/provider-${P}"
|
|
/usr/bin/cargo
|
|
/usr/bin/rustdoc
|
|
/usr/bin/rust-demangler
|
|
/usr/bin/rust-gdb
|
|
/usr/bin/rust-gdbgui
|
|
/usr/bin/rust-lldb
|
|
/usr/lib/rustlib
|
|
/usr/lib/rust/lib
|
|
/usr/lib/rust/man
|
|
/usr/share/doc/rust
|
|
_EOF_
|
|
|
|
if use clippy; then
|
|
echo /usr/bin/clippy-driver >> "${T}/provider-${P}"
|
|
echo /usr/bin/cargo-clippy >> "${T}/provider-${P}"
|
|
fi
|
|
if use miri; then
|
|
echo /usr/bin/miri >> "${T}/provider-${P}"
|
|
echo /usr/bin/cargo-miri >> "${T}/provider-${P}"
|
|
fi
|
|
if use rustfmt; then
|
|
echo /usr/bin/rustfmt >> "${T}/provider-${P}"
|
|
echo /usr/bin/cargo-fmt >> "${T}/provider-${P}"
|
|
fi
|
|
if use rust-analyzer; then
|
|
echo /usr/lib/rust/libexec >> "${T}/provider-${P}"
|
|
echo /usr/bin/rust-analyzer >> "${T}/provider-${P}"
|
|
fi
|
|
insinto /etc/env.d/rust
|
|
doins "${T}/provider-${P}"
|
|
|
|
if use dist; then
|
|
insinto "/usr/lib/${PN}/${PV}/dist"
|
|
doins -r "${S}/build/dist/."
|
|
fi
|
|
}
|
|
|
|
pkg_preinst() {
|
|
# 943308 and friends; basically --keep-going can forget to unmerge old rust
|
|
# but the soft blocker allows us to install conflicting files.
|
|
# This results in duplicated .{rlib,so} files which confuses rustc and results in
|
|
# the need for manual intervention.
|
|
if has_version -b "dev-lang/rust:stable/$(ver_cut 1-2)"; then
|
|
# we need to find all .{rlib,so} files in the old rust lib directory
|
|
# and store them in an array for later use
|
|
readarray -d '' old_rust_libs < <(
|
|
find "${EROOT}/usr/lib/rust/${PV}/lib/rustlib" \
|
|
-type f \( -name '*.rlib' -o -name '*.so' \) -print0)
|
|
export old_rust_libs
|
|
if [[ ${#old_rust_libs[@]} -gt 0 ]]; then
|
|
einfo "Found old .rlib and .so files in the old rust lib directory"
|
|
else
|
|
die "Found no old .rlib and .so files but old rust version is installed. Bailing!"
|
|
fi
|
|
fi
|
|
}
|
|
|
|
pkg_postinst() {
|
|
|
|
local old_rust="dev-lang/rust:stable/$(ver_cut 1-2)"
|
|
if has_version -b ${old_rust}; then
|
|
# Be _extra_ careful here as we're removing files from the live filesystem
|
|
local f
|
|
local only_one_file=()
|
|
einfo "Tidying up libraries files from non-slotted \`${old_rust}\`."
|
|
for f in "${old_rust_libs[@]}"; do
|
|
[[ -f ${f} ]] || die "old_rust_libs array contains non-existent file"
|
|
local base_name="${f%-*}"
|
|
local ext="${f##*.}"
|
|
local matching_files=("${base_name}"-*.${ext})
|
|
case ${#matching_files[@]} in
|
|
2)
|
|
einfo "Removing old .${ext}: ${f}"
|
|
rm "${f}" || die
|
|
;;
|
|
1)
|
|
# Turns out fingerprints are not as unique as we'd thought, _sometimes_ they collide,
|
|
# so we may have already installed over the old file.
|
|
# We'll warn about this just in case, but it's probably fine.
|
|
only_one_file+=( "${matching_files[0]}" )
|
|
;;
|
|
*)
|
|
die "Expected one or two files matching ${base_name}-\*.rlib, but found ${#matching_files[@]}"
|
|
;;
|
|
esac
|
|
done
|
|
if [[ ${#only_one_file} -gt 0 ]]; then
|
|
einfo "While tidying up non-slotted rust libraries for \`${old_rust}\`,"
|
|
einfo "the following file(s) did not have a duplicate where one was expected:"
|
|
for f in "${only_one_file[@]}"; do
|
|
einfo " * ${f}"
|
|
done
|
|
einfo ""
|
|
einfo "This is unlikely to cause problems; the fingerprint for the library ended up being the same."
|
|
einfo "However, if you encounter any issues please report them to the Gentoo Rust Team."
|
|
fi
|
|
fi
|
|
|
|
eselect rust update
|
|
|
|
if has_version dev-debug/gdb || has_version llvm-core/lldb; then
|
|
elog "Rust installs helper scripts for calling GDB and LLDB,"
|
|
elog "for convenience they are installed under /usr/bin/rust-{gdb,lldb}-${PV}."
|
|
fi
|
|
|
|
optfeature "Emacs support" "app-emacs/rust-mode"
|
|
optfeature "Vim support" "app-vim/rust-vim"
|
|
}
|
|
|
|
pkg_postrm() {
|
|
eselect rust cleanup
|
|
}
|