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Add CentOS7-compatible target for aarch64.
Co-authored-by: oooohhoo <oooohhoo@users.noreply.github.com>
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‎.changes/1006.json

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{
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"type": "added",
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"description": "add CentOS7-compatible target for aarch64",
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"issues": [528]
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}

‎.github/workflows/ci.yml

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- { target: thumbv7m-none-eabi, os: ubuntu-latest, std: 1 }
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- { target: cross, os: ubuntu-latest }
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- { target: zig, os: ubuntu-latest }
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- { target: aarch64-unknown-linux-gnu, sub: centos, os: ubuntu-latest, cpp: 1, dylib: 1, std: 1, run: 1, runners: qemu-user qemu-system }
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build:
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name: target (${{ matrix.pretty }},${{ matrix.os }})

‎README.md

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|--------------------------------------|-------:|--------:|:---:|------:|:------:|
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| `aarch64-linux-android` [1] | 9.0.8 | 9.0.8 | ✓ | 6.1.0 | ✓ |
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| `aarch64-unknown-linux-gnu` | 2.31 | 9.4.0 | ✓ | 6.1.0 | ✓ |
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| `aarch64-unknown-linux-gnu:centos` [7] | 2.17 | 4.8.5 | | 4.2.1 | ✓ |
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| `aarch64-unknown-linux-musl` | 1.1.24 | 9.2.0 | ✓ | 6.1.0 | ✓ |
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| `arm-linux-androideabi` [1] | 9.0.8 | 9.0.8 | ✓ | 6.1.0 | ✓ |
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| `arm-unknown-linux-gnueabi` | 2.31 | 9.4.0 | ✓ | 6.1.0 | ✓ |
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[6] libc = emscripten and GCC = clang
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[7] Must change `image = "aarch64-unknown-linux-gnu:main-centos"` in `Cross.toml` for `[target.aarch64-unknown-linux-gnu]` to use the CentOS7-compatible target.
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<!--[7] libc = emscripten and GCC = clang. The Docker images for these targets are currently not built automatically
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due to a [compiler bug](https://github.com/rust-lang/rust/issues/98216), you will have to build them yourself for now.-->
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‎docker/Dockerfile.aarch64-unknown-linux-gnu.centos

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FROM ubuntu:20.04
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ARG DEBIAN_FRONTEND=noninteractive
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COPY lib.sh /
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COPY linux-image.sh /
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RUN /linux-image.sh aarch64
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FROM centos:7
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COPY common.sh lib.sh /
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RUN /common.sh
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COPY cmake.sh /
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RUN /cmake.sh
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COPY xargo.sh /
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RUN /xargo.sh
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COPY qemu.sh /
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RUN /qemu.sh aarch64 softmmu
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COPY dropbear.sh /
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RUN /dropbear.sh
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COPY --from=0 /qemu /qemu
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COPY linux-runner base-runner.sh /
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COPY aarch64-linux-gnu-glibc.sh /
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RUN /aarch64-linux-gnu-glibc.sh
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ENV CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_LINKER=aarch64-linux-gnu-gcc \
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CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_RUNNER="/linux-runner aarch64" \
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CC_aarch64_unknown_linux_gnu=aarch64-linux-gnu-gcc \
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CXX_aarch64_unknown_linux_gnu=aarch64-linux-gnu-g++ \
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BINDGEN_EXTRA_CLANG_ARGS_aarch64_unknown_linux_gnu="--sysroot=/usr/aarch64-linux-gnu" \
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QEMU_LD_PREFIX=/usr/aarch64-linux-gnu \
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RUST_TEST_THREADS=1

‎docker/aarch64-linux-gnu-glibc.sh

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#!/usr/bin/env bash
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set -x
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set -euo pipefail
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unpack_rpm() {
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local package="${1}"
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curl --retry 3 "http://mirror.centos.org/altarch/7/os/aarch64/Packages/${package}" -O
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rpm2cpio "${package}" | cpio -idmv
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}
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symlink_gcc_lib() {
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local prefix="${1}"
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shift
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local srcfile="${1}"
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shift
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local dstdir="/usr/lib/gcc/aarch64-linux-gnu"
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ln -s "${prefix}/lib/${srcfile}" "${dstdir}/4.8.2/${srcfile}"
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ln -s "${prefix}/lib/${srcfile}" "${dstdir}/4.8.5/${srcfile}"
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local dstfile
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for dstfile in "${@}"; do
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ln -s "${prefix}/lib/${srcfile}" "${dstdir}/4.8.2/${dstfile}"
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ln -s "${prefix}/lib/${srcfile}" "${dstdir}/4.8.5/${dstfile}"
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done
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}
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cp_gcc_archive() {
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local name="${1}"
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local srcdir="usr/lib/gcc/aarch64-redhat-linux/"
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local dstdir="/usr/lib/gcc/aarch64-linux-gnu/"
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cp "${srcdir}/4.8.2/${name}" "${dstdir}/4.8.2/${name}"
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cp "${srcdir}/4.8.5/${name}" "${dstdir}/4.8.5/${name}"
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}
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main() {
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yum install -y epel-release
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yum install -y gcc-aarch64-linux-gnu gcc-c++-aarch64-linux-gnu binutils-aarch64-linux-gnu binutils gcc-c++ glibc-devel
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yum clean all
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local td
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td="$(mktemp -d)"
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pushd "${td}"
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local target=aarch64-linux-gnu
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local prefix="/usr/${target}"
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local kernel_v4="4.18.20"
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curl --retry 3 "https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/linux-${kernel_v4}.tar.xz" -O
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tar -xvf "linux-${kernel_v4}.tar.xz"
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pushd "linux-${kernel_v4}"
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make ARCH=arm64 INSTALL_HDR_PATH="${prefix}" headers_install
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popd
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curl --retry 3 http://ftp.gnu.org/gnu/glibc/glibc-2.17.tar.xz -O
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tar -xvf glibc-2.17.tar.xz
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mkdir build
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pushd build
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CC=/usr/bin/aarch64-linux-gnu-gcc \
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CXX=/usr/bin/aarch64-linux-gnu-g++ \
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LD=/usr/bin/aarch64-linux-gnu-ld \
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AR=/usr/bin/aarch64-linux-gnu-ar \
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RANLIB=/usr/bin/aarch64-linux-gnu-ranlib \
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../glibc-2.17/configure \
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--prefix="${prefix}" \
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--build="${MACHTYPE}" \
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--host="${target}" \
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--target="${target}" \
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--with-arch=aarch64 \
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--with-headers="${prefix}/include" \
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--libdir="${prefix}/lib" \
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--libexecdir="${prefix}/lib"
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make -j && make install
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popd
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mkdir -p "${prefix}"/{include,lib}
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mkdir -p "/usr/lib/gcc/aarch64-linux-gnu"/{4.8.2,4.8.5}
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mkdir libgcc
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pushd libgcc
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unpack_rpm "libgcc-4.8.5-44.el7.aarch64.rpm"
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mv lib64/* "${prefix}/lib"
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# C++ support needs `libgcc.so`, even though it warns about `libgcc_s.so`
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symlink_gcc_lib "${prefix}" "libgcc_s.so.1" "libgcc_s.so" "libgcc.so"
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popd
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mkdir libstdcpp
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pushd libstdcpp
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unpack_rpm "libstdc++-4.8.5-44.el7.aarch64.rpm"
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unpack_rpm "libstdc++-devel-4.8.5-44.el7.aarch64.rpm"
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unpack_rpm "libstdc++-static-4.8.5-44.el7.aarch64.rpm"
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mv usr/include/* "${prefix}/include"
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mv usr/lib64/* "${prefix}/lib"
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symlink_gcc_lib "${prefix}" "libstdc++.so.6" "libstdc++.so"
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cp_gcc_archive "libstdc++.a"
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cp_gcc_archive "libsupc++.a"
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popd
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local cpp_include=/usr/aarch64-linux-gnu/include/c++
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local cpp_482="${cpp_include}/4.8.2"
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local cpp_485="${cpp_include}/4.8.5"
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local redhat_482="${cpp_482}/aarch64-redhat-linux"
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local redhat_485="${cpp_485}/aarch64-redhat-linux"
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mv "${redhat_482}/bits"/* "${cpp_482}/bits"
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mv "${redhat_482}/ext"/* "${cpp_482}/ext"
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# these are currently empty, but might contain content later
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mv "${redhat_485}/bits"/* "${cpp_485}/bits" || true
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mv "${redhat_485}/ext"/* "${cpp_485}/ext" || true
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popd
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rm -rf "${td}"
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rm "${0}"
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}
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main "${@}"

‎src/docker/provided_images.rs

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platforms: &[ImagePlatform::DEFAULT],
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sub: None
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},
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ProvidedImage {
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name: "aarch64-unknown-linux-gnu",
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platforms: &[ImagePlatform::DEFAULT],
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sub: Some("centos")
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},
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];

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