Auto merge of #126298 - heiher:loongarch64-musl-ci, r=<try>

ci: Add support for dist-loongarch64-musl

MCP: rust-lang/compiler-team#753
Tracking issue: #122592

try-job: dist-loongarch64-musl

Author: bors

src/ci/docker/README.md

@@ -271,6 +271,22 @@ For targets: `loongarch64-unknown-linux-gnu`
 - C compiler > gcc version = 13.2.0
 - C compiler > C++ = ENABLE -- to cross compile LLVM
 
+### `loongarch64-linux-musl.defconfig`
+
+For targets: `loongarch64-unknown-linux-musl`
+
+- Path and misc options > Prefix directory = /x-tools/${CT\_TARGET}
+- Path and misc options > Use a mirror = ENABLE
+- Path and misc options > Base URL = https://ci-mirrors.rust-lang.org/rustc
+- Target options > Target Architecture = loongarch
+- Target options > Bitness = 64-bit
+- Operating System > Target OS = linux
+- Operating System > Linux kernel version = 5.19.16
+- Binary utilities > Version of binutils = 2.41
+- C-library > musl version = 1.2.5
+- C compiler > gcc version = 13.2.0
+- C compiler > C++ = ENABLE -- to cross compile LLVM
+
 ### `mips-linux-gnu.defconfig`
 
 For targets: `mips-unknown-linux-gnu`

src/ci/docker/host-x86_64/dist-loongarch64-musl/Dockerfile

@@ -0,0 +1,35 @@
+FROM ubuntu:22.04
+
+COPY scripts/cross-apt-packages.sh /scripts/
+RUN sh /scripts/cross-apt-packages.sh
+
+COPY scripts/crosstool-ng-git.sh /scripts/
+RUN sh /scripts/crosstool-ng-git.sh
+
+COPY scripts/rustbuild-setup.sh /scripts/
+RUN sh /scripts/rustbuild-setup.sh
+WORKDIR /tmp
+
+COPY scripts/crosstool-ng-build.sh /scripts/
+COPY host-x86_64/dist-loongarch64-musl/loongarch64-unknown-linux-musl.defconfig /tmp/crosstool.defconfig
+RUN /scripts/crosstool-ng-build.sh
+
+COPY scripts/sccache.sh /scripts/
+RUN sh /scripts/sccache.sh
+
+ENV PATH=$PATH:/x-tools/loongarch64-unknown-linux-musl/bin
+
+ENV CC_loongarch64_unknown_linux_musl=loongarch64-unknown-linux-musl-gcc \
+    AR_loongarch64_unknown_linux_musl=loongarch64-unknown-linux-musl-ar \
+    CXX_loongarch64_unknown_linux_musl=loongarch64-unknown-linux-musl-g++
+
+ENV HOSTS=loongarch64-unknown-linux-musl
+
+ENV RUST_CONFIGURE_ARGS \
+      --enable-extended \
+      --enable-lld \
+      --disable-docs \
+      --set target.loongarch64-unknown-linux-musl.crt-static=false \
+      --musl-root-loongarch64=/x-tools/loongarch64-unknown-linux-musl/loongarch64-unknown-linux-musl/sysroot/usr
+
+ENV SCRIPT python3 ../x.py dist --host $HOSTS --target $HOSTS

src/ci/docker/host-x86_64/dist-loongarch64-musl/loongarch64-unknown-linux-musl.defconfig

@@ -0,0 +1,15 @@
+CT_CONFIG_VERSION="4"
+CT_EXPERIMENTAL=y
+CT_PREFIX_DIR="/x-tools/${CT_TARGET}"
+CT_USE_MIRROR=y
+CT_MIRROR_BASE_URL="https://ci-mirrors.rust-lang.org/rustc"
+CT_ARCH_LOONGARCH=y
+# CT_DEMULTILIB is not set
+CT_ARCH_USE_MMU=y
+CT_ARCH_ARCH="loongarch64"
+CT_KERNEL_LINUX=y
+CT_LINUX_V_5_19=y
+CT_LIBC_MUSL=y
+CT_CC_GCC_ENABLE_DEFAULT_PIE=y
+CT_CC_LANG_CXX=y
+CT_GETTEXT_NEEDED=y

src/ci/docker/scripts/crosstool-ng-git.sh

@@ -0,0 +1,17 @@
+#!/bin/sh
+set -ex
+
+URL=https://github.com/crosstool-ng/crosstool-ng
+REV=c64500d94be92ed1bcdfdef911048a14e216a5e1
+
+mkdir crosstool-ng
+cd crosstool-ng
+git init
+git fetch --depth=1 ${URL} ${REV}
+git reset --hard FETCH_HEAD
+./bootstrap
+./configure --prefix=/usr/local
+make -j$(nproc)
+make install
+cd ..
+rm -rf crosstool-ng

src/ci/github-actions/jobs.yml

@@ -144,6 +144,9 @@ auto:
   - image: dist-loongarch64-linux
     <<: *job-linux-4c
 
+  - image: dist-loongarch64-musl
+    <<: *job-linux-4c
+
   - image: dist-ohos
     <<: *job-linux-4c