commit:     e2701fa0f4b3b3a3d971c2274c36b4ea4bce7181
Author:     Georgy Yakovlev <gyakovlev <AT> gentoo <DOT> org>
AuthorDate: Fri Sep 25 07:26:47 2020 +0000
Commit:     Georgy Yakovlev <gyakovlev <AT> gentoo <DOT> org>
CommitDate: Fri Sep 25 07:37:58 2020 +0000
URL:        https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=e2701fa0

sys-devel/rust-std: new package, for crossdev #679878

EXPERIMENTAL!

Bug: https://bugs.gentoo.org/680652
Bug: https://bugs.gentoo.org/679878
Bug: https://bugs.gentoo.org/689336
Package-Manager: Portage-3.0.8, Repoman-3.0.1
Signed-off-by: Georgy Yakovlev <gyakovlev <AT> gentoo.org>

 sys-devel/rust-std/Manifest               |   1 +
 sys-devel/rust-std/metadata.xml           |  21 +++++
 sys-devel/rust-std/rust-std-1.46.0.ebuild | 146 ++++++++++++++++++++++++++++++
 3 files changed, 168 insertions(+)

diff --git a/sys-devel/rust-std/Manifest b/sys-devel/rust-std/Manifest
new file mode 100644
index 00000000000..4a83cef970c
--- /dev/null
+++ b/sys-devel/rust-std/Manifest
@@ -0,0 +1 @@
+DIST rustc-1.46.0-src.tar.xz 101868452 BLAKE2B 
da9798596b124a10d79c236a871228f05e5f571d22c2259328e7026c91e088c85f5de9c0536a16531e0cb10477bfcd16d3ac11467979f5561cb6199442b877ef
 SHA512 
099857f1d295043587a4e2a65ef3e6a90e12c8b6958e98535a1656c113c553f9a9b621aba8a19cf21bd8d2c79d27cbfa4b8e6fabbcb3cbfee23b545be7b450b4

diff --git a/sys-devel/rust-std/metadata.xml b/sys-devel/rust-std/metadata.xml
new file mode 100644
index 00000000000..c736f846eb1
--- /dev/null
+++ b/sys-devel/rust-std/metadata.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd";>
+<pkgmetadata>
+       <maintainer type="person">
+               <email>[email protected]</email>
+               <name>Georgy Yakovlev</name>
+       </maintainer>
+       <maintainer type="project">
+               <email>[email protected]</email>
+               <name>Rust Project</name>
+       </maintainer>
+       <longdescription>
+               The Rust Standard Library is the foundation of portable Rust 
software,
+               a set of minimal and battle-tested shared abstractions for the 
broader Rust ecosystem.
+               It offers core types, like Vec&lt;T&gt; and Option&lt;T&gt;, 
library-defined operations on language primitives,
+               standard macros, I/O and multithreading, among many other 
things.
+       </longdescription>
+       <upstream>
+               <remote-id type="github">rust-lang/rust</remote-id>
+       </upstream>
+</pkgmetadata>

diff --git a/sys-devel/rust-std/rust-std-1.46.0.ebuild 
b/sys-devel/rust-std/rust-std-1.46.0.ebuild
new file mode 100644
index 00000000000..a90e4641c1f
--- /dev/null
+++ b/sys-devel/rust-std/rust-std-1.46.0.ebuild
@@ -0,0 +1,146 @@
+# Copyright 2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+PYTHON_COMPAT=( python3_{6,7,8} )
+
+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 yet
+#KEYWORDS="" #nowarn
+IUSE="debug"
+
+BDEPEND="
+       ${PYTHON_DEPS}
+       ~dev-lang/rust-${PV}:=
+"
+
+DEPEND="||
+       (
+               >="${CATEGORY}"/gcc-4.7:*
+               >="${CATEGORY}"/clang-3.5:*
+       )
+"
+
+RDEPEND="${DEPEND}"
+
+# need full compiler to run tests
+RESTRICT="test"
+
+QA_FLAGS_IGNORED="usr/lib.*/rust-.*/rustlib/.*/lib/lib.*.so"
+
+S="${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 = "${EPREFIX}/usr"
+               libdir = "$(get_libdir)/${P/-std/}"
+               [rust]
+               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.${rtarget}]
+               cc = "$(tc-getCC ${CTARGET})"
+               cxx = "$(tc-getCXX ${CTARGET})"
+               linker = "$(tc-getCC ${CTARGET})"
+               ar = "$(tc-getAR ${CTARGET})"
+               $(usex elibc_musl 'crt-static = false' '')
+       EOF
+
+       einfo "${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) \
+               src/libstd --stage 0 || die
+}
+
+src_test() {
+       ewarn "${PN} can't run tests"
+}
+
+src_install() {
+       local rustlib="$(get_libdir)/${P/-std/}/rustlib"
+       dodir "/usr/${rustlib}"
+       pushd "build/${rhost}/stage0-sysroot/${rustlib}" > /dev/null || die
+       cp -pPRv "${rtarget}" "${ED}/usr/${rustlib}" || die
+       popd > /dev/null || die
+}

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