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# Copyright 2020-2023 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
PYTHON_COMPAT=( python3_{9..11} )
inherit flag-o-matic multiprocessing python-any-r1 rust-toolchain toolchain-funcs
DESCRIPTION="Rust standard library, standalone (for crossdev)"
HOMEPAGE="https://www.rust-lang.org"
SRC_URI="https://static.rust-lang.org/dist/rustc-${PV}-src.tar.xz"
LICENSE="|| ( MIT Apache-2.0 ) BSD-1 BSD-2 BSD-4 UoI-NCSA"
SLOT="stable/$(ver_cut 1-2)"
# please do not keyword
#KEYWORDS="" #nowarn
IUSE="debug"
BDEPEND="
${PYTHON_DEPS}
~dev-lang/rust-${PV}:=
"
DEPEND="||
(
>="${CATEGORY}"/gcc-4.7:*
>="${CATEGORY}"/clang-3.5:*
)
"
RDEPEND="${DEPEND}"
# need full compiler to run tests
RESTRICT="test"
QA_FLAGS_IGNORED="usr/lib/rust/${PV}/rustlib/.*/lib/lib.*.so"
S="${WORKDIR}/${P/-std/c}-src"
#
# The cross magic
#
export CTARGET=${CTARGET:-${CHOST}}
if [[ ${CTARGET} == ${CHOST} ]] ; then
if [[ ${CATEGORY} == cross-* ]] ; then
export CTARGET=${CATEGORY#cross-}
fi
fi
is_cross() {
[[ ${CHOST} != ${CTARGET} ]]
}
toml_usex() {
usex "$1" true false
}
pkg_pretend() {
is_cross || die "${PN} should only be used for cross"
}
pkg_setup() {
python-any-r1_pkg_setup
}
src_prepare() {
default
}
src_configure() {
# do the great cleanup
strip-flags
filter-flags '-mcpu=*' '-march=*' '-mtune=*' '-m32' '-m64'
strip-unsupported-flags
local rust_root x
rust_root="$(rustc --print sysroot)"
rtarget="$(rust_abi ${CTARGET})"
rtarget="${ERUST_STD_RTARGET:-${rtarget}}" # some targets need to be custom.
rbuild="$(rust_abi ${CBUILD})"
rhost="$(rust_abi ${CHOST})"
echo
for x in CATEGORY rust_root rbuild rhost rtarget RUSTFLAGS CFLAGS CXXFLAGS LDFLAGS; do
einfo "$(printf '%10s' ${x^^}:) ${!x}"
done
cat <<- EOF > "${S}"/config.toml
[build]
build = "${rbuild}"
host = ["${rhost}"]
target = ["${rtarget}"]
cargo = "${rust_root}/bin/cargo"
rustc = "${rust_root}/bin/rustc"
submodules = false
python = "${EPYTHON}"
locked-deps = true
vendor = true
extended = true
verbose = 2
cargo-native-static = false
[install]
prefix = "${EPREFIX}/usr/lib/${PN}/${PV}"
sysconfdir = "etc"
docdir = "share/doc/rust"
bindir = "bin"
libdir = "lib"
mandir = "share/man"
[rust]
# https://github.com/rust-lang/rust/issues/54872
codegen-units-std = 1
optimize = true
debug = $(toml_usex debug)
debug-assertions = $(toml_usex debug)
debuginfo-level-rustc = 0
backtrace = true
incremental = false
default-linker = "$(tc-getCC)"
rpath = false
dist-src = false
remap-debuginfo = true
jemalloc = false
[dist]
src-tarball = false
[target.${rtarget}]
ar = "$(tc-getAR ${CTARGET})"
cc = "$(tc-getCC ${CTARGET})"
cxx = "$(tc-getCXX ${CTARGET})"
linker = "$(tc-getCC ${CTARGET})"
ranlib = "$(tc-getRANLIB ${CTARGET})"
$(usev elibc_musl 'crt-static = false')
EOF
einfo "${PN^} configured with the following settings:"
cat "${S}"/config.toml || die
}
src_compile() {
env RUST_BACKTRACE=1 \
"${EPYTHON}" ./x.py build -vv --config="${S}"/config.toml -j$(makeopts_jobs) \
library/std --stage 0 || die
}
src_test() {
ewarn "${PN} can't run tests"
}
src_install() {
local rustlib="lib/rust/${PV}/lib/rustlib"
dodir "/usr/${rustlib}"
pushd "build/${rhost}/stage0-sysroot/lib/rustlib" > /dev/null || die
cp -pPRv "${rtarget}" "${ED}/usr/${rustlib}" || die
popd > /dev/null || die
}
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