ci: Move dist-aarch64-linux to an aarch64 runner

src/ci/docker/host-aarch64/dist-aarch64-linux/Dockerfile

@@ -0,0 +1,101 @@
+# We document platform support for minimum glibc 2.17 and kernel 3.2.
+# CentOS 7 has headers for kernel 3.10, but that's fine as long as we don't
+# actually use newer APIs in rustc or std without a fallback. It's more
+# important that we match glibc for ELF symbol versioning.
+FROM centos:7
+
+WORKDIR /build
+
+# CentOS 7 EOL is June 30, 2024, but the repos remain in the vault.
+RUN sed -i /etc/yum.repos.d/*.repo -e 's!^mirrorlist!#mirrorlist!' \
+  -e 's!^#baseurl=http://mirror.centos.org/!baseurl=https://vault.centos.org/!'
+RUN sed -i 's/enabled=1/enabled=0/' /etc/yum/pluginconf.d/fastestmirror.conf
+
+RUN yum upgrade -y && \
+    yum install -y \
+      automake \
+      bzip2 \
+      file \
+      gcc \
+      gcc-c++ \
+      git \
+      glibc-devel \
+      libedit-devel \
+      libstdc++-devel \
+      make \
+      ncurses-devel \
+      openssl-devel \
+      patch \
+      perl \
+      perl-core \
+      pkgconfig \
+      python3 \
+      unzip \
+      wget \
+      xz \
+      zlib-devel \
+      && yum clean all
+
+RUN mkdir -p /rustroot/bin
+
+ENV PATH=/rustroot/bin:$PATH
+ENV LD_LIBRARY_PATH=/rustroot/lib64:/rustroot/lib32:/rustroot/lib
+ENV PKG_CONFIG_PATH=/rustroot/lib/pkgconfig
+WORKDIR /tmp
+RUN mkdir /home/user
+COPY scripts/shared.sh /tmp/
+
+# Need at least GCC 5.1 to compile LLVM
+COPY scripts/build-gcc.sh /tmp/
+ENV GCC_VERSION=9.5.0
+ENV GCC_BUILD_TARGET=aarch64-unknown-linux-gnu
+RUN ./build-gcc.sh && yum remove -y gcc gcc-c++
+
+ENV CC=gcc CXX=g++
+
+# LLVM 17 needs cmake 3.20 or higher.
+COPY scripts/cmake.sh /tmp/
+RUN ./cmake.sh
+
+# Build LLVM+Clang
+COPY scripts/build-clang.sh /tmp/
+ENV LLVM_BUILD_TARGETS=AArch64
+RUN ./build-clang.sh
+ENV CC=clang CXX=clang++
+
+# Build zstd to enable `llvm.libzstd`.
+COPY scripts/build-zstd.sh /tmp/
+RUN ./build-zstd.sh
+
+COPY scripts/sccache.sh /scripts/
+RUN sh /scripts/sccache.sh
+
+ENV PGO_HOST=aarch64-unknown-linux-gnu
+ENV HOSTS=aarch64-unknown-linux-gnu
+
+ENV CPATH=/usr/include/aarch64-linux-gnu/:$CPATH
+
+ENV RUST_CONFIGURE_ARGS \
+      --build=aarch64-unknown-linux-gnu \
+      --enable-full-tools \
+      --enable-profiler \
+      --enable-sanitizers \
+      --enable-compiler-docs \
+      --set target.aarch64-unknown-linux-gnu.linker=clang \
+      --set target.aarch64-unknown-linux-gnu.ar=/rustroot/bin/llvm-ar \
+      --set target.aarch64-unknown-linux-gnu.ranlib=/rustroot/bin/llvm-ranlib \
+      --set llvm.link-shared=true \
+      --set llvm.thin-lto=true \
+      --set llvm.libzstd=true \
+      --set llvm.ninja=false \
+      --set rust.debug-assertions=false \
+      --set rust.jemalloc \
+      --set rust.use-lld=true \
+      --set rust.codegen-units=1
+
+ENV SCRIPT python3 ../x.py dist --host $HOSTS --target $HOSTS
+
+ENV CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_LINKER=clang
+ENV DIST_SRC 1
+ENV LIBCURL_NO_PKG_CONFIG 1
+ENV DIST_REQUIRE_ALL_TOOLS 1

src/ci/docker/host-x86_64/dist-i686-linux/Dockerfile

@@ -19,6 +19,7 @@ RUN yum upgrade -y && \
       gcc \
       gcc-c++ \
       git \
+      binutils.i686 \
       glibc-devel.i686 \
       glibc-devel.x86_64 \
       libedit-devel \
@@ -46,19 +47,21 @@ ENV LD_LIBRARY_PATH=/rustroot/lib64:/rustroot/lib32:/rustroot/lib
 ENV PKG_CONFIG_PATH=/rustroot/lib/pkgconfig
 WORKDIR /tmp
 RUN mkdir /home/user
-COPY host-x86_64/dist-x86_64-linux/shared.sh /tmp/
+COPY scripts/shared.sh /tmp/
 
 # Need at least GCC 5.1 to compile LLVM nowadays
-COPY host-x86_64/dist-x86_64-linux/build-gcc.sh /tmp/
+COPY scripts/build-gcc.sh /tmp/
 ENV GCC_VERSION=9.5.0
+ENV GCC_BUILD_TARGET=i686-pc-linux-gnu
 RUN ./build-gcc.sh && yum remove -y gcc gcc-c++
 
 COPY scripts/cmake.sh /tmp/
 RUN ./cmake.sh
 
 # Now build LLVM+Clang, afterwards configuring further compilations to use the
 # clang/clang++ compilers.
-COPY host-x86_64/dist-x86_64-linux/build-clang.sh /tmp/
+COPY scripts/build-clang.sh /tmp/
+ENV LLVM_BUILD_TARGETS=X86
 RUN ./build-clang.sh
 ENV CC=clang CXX=clang++
 

src/ci/docker/host-x86_64/dist-powerpc64le-linux/Dockerfile

@@ -18,7 +18,7 @@ RUN /scripts/crosstool-ng-build.sh
 WORKDIR /build
 
 RUN apt-get install -y --no-install-recommends rpm2cpio cpio
-COPY host-x86_64/dist-powerpc64le-linux/shared.sh host-x86_64/dist-powerpc64le-linux/build-powerpc64le-toolchain.sh /build/
+COPY scripts/shared.sh host-x86_64/dist-powerpc64le-linux/build-powerpc64le-toolchain.sh /build/
 RUN ./build-powerpc64le-toolchain.sh
 
 COPY scripts/sccache.sh /scripts/

src/ci/docker/host-x86_64/dist-x86_64-linux/Dockerfile

@@ -47,11 +47,12 @@ ENV PKG_CONFIG_PATH=/rustroot/lib/pkgconfig
 # Clang needs to access GCC headers to enable linker plugin LTO
 WORKDIR /tmp
 RUN mkdir /home/user
-COPY host-x86_64/dist-x86_64-linux/shared.sh /tmp/
+COPY scripts/shared.sh /tmp/
 
 # Need at least GCC 5.1 to compile LLVM nowadays
-COPY host-x86_64/dist-x86_64-linux/build-gcc.sh /tmp/
+COPY scripts/build-gcc.sh /tmp/
 ENV GCC_VERSION=9.5.0
+ENV GCC_BUILD_TARGET=x86_64-pc-linux-gnu
 RUN ./build-gcc.sh && yum remove -y gcc gcc-c++
 
 # LLVM 17 needs cmake 3.20 or higher.
@@ -60,12 +61,13 @@ RUN ./cmake.sh
 
 # Now build LLVM+Clang, afterwards configuring further compilations to use the
 # clang/clang++ compilers.
-COPY host-x86_64/dist-x86_64-linux/build-clang.sh /tmp/
+COPY scripts/build-clang.sh /tmp/
+ENV LLVM_BUILD_TARGETS=X86
 RUN ./build-clang.sh
 ENV CC=clang CXX=clang++
 
 # Build zstd to enable `llvm.libzstd`.
-COPY host-x86_64/dist-x86_64-linux/build-zstd.sh /tmp/
+COPY scripts/build-zstd.sh /tmp/
 RUN ./build-zstd.sh
 
 COPY scripts/sccache.sh /scripts/

src/ci/docker/host-x86_64/x86_64-gnu-llvm-18/Dockerfile

@@ -54,8 +54,8 @@ ENV RUST_CONFIGURE_ARGS \
       --set rust.randomize-layout=true \
       --set rust.thin-lto-import-instr-limit=10
 
-COPY host-x86_64/dist-x86_64-linux/shared.sh /scripts/
-COPY host-x86_64/dist-x86_64-linux/build-gccjit.sh /scripts/
+COPY scripts/shared.sh /scripts/
+COPY scripts/build-gccjit.sh /scripts/
 
 RUN /scripts/build-gccjit.sh /scripts
 

src/ci/docker/host-x86_64/x86_64-gnu-llvm-19/Dockerfile

@@ -54,8 +54,8 @@ ENV RUST_CONFIGURE_ARGS \
       --set rust.randomize-layout=true \
       --set rust.thin-lto-import-instr-limit=10
 
-COPY host-x86_64/dist-x86_64-linux/shared.sh /scripts/
-COPY host-x86_64/dist-x86_64-linux/build-gccjit.sh /scripts/
+COPY scripts/shared.sh /scripts/
+COPY scripts/build-gccjit.sh /scripts/
 
 RUN /scripts/build-gccjit.sh /scripts
 

src/ci/docker/host-x86_64/x86_64-gnu-tools/Dockerfile

@@ -89,8 +89,8 @@ ENV HOST_TARGET x86_64-unknown-linux-gnu
 # assertions enabled! Therefore, we cannot force download CI rustc.
 #ENV FORCE_CI_RUSTC 1
 
-COPY host-x86_64/dist-x86_64-linux/shared.sh /scripts/
-COPY host-x86_64/dist-x86_64-linux/build-gccjit.sh /scripts/
+COPY scripts/shared.sh /scripts/
+COPY scripts/build-gccjit.sh /scripts/
 
 RUN /scripts/build-gccjit.sh /scripts
 

src/ci/docker/host-x86_64/dist-x86_64-linux/build-clang.sh → src/ci/docker/scripts/build-clang.sh

@@ -21,6 +21,12 @@ cd clang-build
 # include path, /rustroot/include, to clang's default include path.
 INC="/rustroot/include:/usr/include"
 
+GCC_PLUGIN_TARGET=$GCC_BUILD_TARGET
+# We build gcc for the i686 job on x86_64 so the plugin will end up under an x86_64 path
+if [[ $GCC_PLUGIN_TARGET == "i686-pc-linux-gnu" ]]; then
+  GCC_PLUGIN_TARGET=x86_64-pc-linux-gnu
+fi
+
 # We need compiler-rt for the profile runtime (used later to PGO the LLVM build)
 # but sanitizers aren't currently building. Since we don't need those, just
 # disable them. BOLT is used for optimizing LLVM.
@@ -34,12 +40,12 @@ hide_output \
       -DCOMPILER_RT_BUILD_XRAY=OFF \
       -DCOMPILER_RT_BUILD_MEMPROF=OFF \
       -DCOMPILER_RT_BUILD_CTX_PROFILE=OFF \
-      -DLLVM_TARGETS_TO_BUILD=X86 \
+      -DLLVM_TARGETS_TO_BUILD=$LLVM_BUILD_TARGETS \
       -DLLVM_INCLUDE_BENCHMARKS=OFF \
       -DLLVM_INCLUDE_TESTS=OFF \
       -DLLVM_INCLUDE_EXAMPLES=OFF \
       -DLLVM_ENABLE_PROJECTS="clang;lld;compiler-rt;bolt" \
-      -DLLVM_BINUTILS_INCDIR="/rustroot/lib/gcc/x86_64-pc-linux-gnu/$GCC_VERSION/plugin/include/" \
+      -DLLVM_BINUTILS_INCDIR="/rustroot/lib/gcc/$GCC_PLUGIN_TARGET/$GCC_VERSION/plugin/include/" \
       -DC_INCLUDE_DIRS="$INC"
 
 hide_output make -j$(nproc)

src/ci/docker/host-x86_64/dist-x86_64-linux/build-gcc.sh → src/ci/docker/scripts/build-gcc.sh

@@ -51,7 +51,9 @@ cd ..
 rm -rf gcc-build
 rm -rf gcc-$GCC
 
-# FIXME: clang doesn't find 32-bit libraries in /rustroot/lib,
-# but it does look all the way under /rustroot/lib/[...]/32,
-# so we can link stuff there to help it out.
-ln /rustroot/lib/*.{a,so} -rst /rustroot/lib/gcc/x86_64-pc-linux-gnu/$GCC/32/
+if [[ $GCC_BUILD_TARGET == "i686-pc-linux-gnu" ]]; then
+    # FIXME: clang doesn't find 32-bit libraries in /rustroot/lib,
+    # but it does look all the way under /rustroot/lib/[...]/32,
+    # so we can link stuff there to help it out.
+    ln /rustroot/lib/*.{a,so} -rst /rustroot/lib/gcc/x86_64-pc-linux-gnu/$GCC/32/
+fi

src/ci/github-actions/jobs.yml

@@ -138,7 +138,7 @@ auto:
   - name: dist-aarch64-linux
     env:
       CODEGEN_BACKENDS: llvm,cranelift
-    <<: *job-linux-4c
+    <<: *job-aarch64-linux
 
   - name: dist-android
     <<: *job-linux-4c