[LDC] CI: Migrate Linux AArch64 job from Cirrus CI to GitHub Actions

Author: kinke

.cirrus.yml

@@ -13,10 +13,19 @@ runs:
       shell: bash
       run: |
         set -eux
+        cd ..
         export DEBIAN_FRONTEND=noninteractive
         sudo apt-get -q update
-        sudo apt-get -yq install \
-          git-core cmake g++ binutils-dev libzstd-dev python p7zip-full unzip
+        sudo -E apt-get -yq install \
+          git-core curl xz-utils ninja-build g++ python3 pkgconf binutils-dev libxml2-dev libzstd-dev zlib1g-dev p7zip-full unzip
+
+        # install a recent CMake version (Ubuntu 20's too old)
+        curl -fL --retry 3 --max-time 300 -o cmake.tar.gz \
+          https://github.com/Kitware/CMake/releases/download/v3.31.4/cmake-3.31.4-linux-${{ inputs.arch }}.tar.gz
+        mkdir cmake
+        tar -xf cmake.tar.gz --strip 1 -C cmake
+        rm cmake.tar.gz
+        sudo ln -sf $PWD/cmake/bin/cmake /usr/bin/cmake
 
     - name: 'Linux: Download & extract clang' # into ../clang
       if: runner.os == 'Linux'
@@ -25,8 +34,13 @@ runs:
         set -eux
         cd ..
         version='${{ inputs.clang_version }}'
+        arch='${{ inputs.arch }}'
+        extraSuffix=''
+        if [[ $arch == x86_64 ]]; then
+          extraSuffix='-ubuntu-18.04'
+        fi
         curl -fL --retry 3 --max-time 300 -o clang.tar.xz \
-          https://github.com/llvm/llvm-project/releases/download/llvmorg-$version/clang+llvm-$version-x86_64-linux-gnu-ubuntu-18.04.tar.xz
+          https://github.com/llvm/llvm-project/releases/download/llvmorg-$version/clang+llvm-$version-$arch-linux-gnu$extraSuffix.tar.xz
         mkdir clang
         tar -xf clang.tar.xz --strip 1 -C clang
         rm clang.tar.xz
@@ -64,7 +78,8 @@ runs:
           echo "ASMFLAGS=-m32" >> $GITHUB_ENV
         fi
 
-    - name: Install ninja
+    - name: 'Non-Linux: Install ninja'
+      if: runner.os != 'Linux'
       uses: seanmiddleditch/gha-setup-ninja@v4
 
     - name: 'Windows: Set LDC_VSDIR env variable'

.github/actions/1-setup/action.yml

@@ -68,8 +68,8 @@ runs:
         echo "ARTIFACT_ID=$artifactID" >> $GITHUB_ENV
         echo "ARTIFACT_NAME=$os-${{ inputs.arch }}$assertsSuffix" >> $GITHUB_ENV
 
-    - name: 'Linux: Pack source dir'
-      if: runner.os == 'Linux' && inputs.os == '' && inputs.with_asserts == 'false'
+    - name: 'Linux x86_64: Pack source dir'
+      if: runner.os == 'Linux' && inputs.os == '' && inputs.arch == 'x86_64' && inputs.with_asserts == 'false'
       shell: bash
       run: |
         set -euxo pipefail

.github/actions/3-package/action.yml

@@ -33,18 +33,22 @@ jobs:
             os: windows-2022
             arch: x64
             with_asserts: false
+            clang_version: 19.1.3 # the MSVC headers require clang 16+
           - job_name: Windows x64 withAsserts
             os: windows-2022
             arch: x64
             with_asserts: true
+            clang_version: 19.1.3 # the MSVC headers require clang 16+
           - job_name: Windows x86
             os: windows-2022
             arch: x86
             with_asserts: false
+            clang_version: 19.1.3 # the MSVC headers require clang 16+
           - job_name: Windows x86 withAsserts
             os: windows-2022
             arch: x86
             with_asserts: true
+            clang_version: 19.1.3 # the MSVC headers require clang 16+
           - job_name: Linux x86_64
             os: ubuntu-20.04
             arch: x86_64
@@ -53,6 +57,18 @@ jobs:
             os: ubuntu-20.04
             arch: x86_64
             with_asserts: true
+          - job_name: Linux aarch64
+            os: ubuntu-22.04-arm # Ubuntu 20 not natively supported
+            container_image: ubuntu:20.04
+            arch: aarch64
+            with_asserts: false
+            clang_version: 15.0.3 # 15.0.6 requires a more recent libstdc++.so.6 than shipped with Ubuntu 20
+          - job_name: Linux aarch64 withAsserts
+            os: ubuntu-22.04-arm # Ubuntu 20 not natively supported
+            container_image: ubuntu:20.04
+            arch: aarch64
+            with_asserts: true
+            clang_version: 15.0.3 # 15.0.6 requires a more recent libstdc++.so.6 than shipped with Ubuntu 20
           - job_name: macOS arm64
             os: macos-15
             arch: arm64
@@ -71,16 +87,23 @@ jobs:
             with_asserts: true
     name: ${{ matrix.job_name }}
     runs-on: ${{ matrix.os }}
+    container: ${{ matrix.container_image }}
     timeout-minutes: 240
     env:
       MACOSX_DEPLOYMENT_TARGET: ${{ matrix.arch == 'arm64' && '11.0' || '10.12' }}
     steps:
+      - name: 'Container: Install git and sudo'
+        if: matrix.container_image
+        shell: bash
+        run: |
+          set -eux
+          apt-get -q update
+          DEBIAN_FRONTEND=noninteractive apt-get -yq install git-core sudo
       - uses: actions/checkout@v4
       - name: Install prerequisites
         uses: ./.github/actions/1-setup
         with:
-          # on Windows, the MSVC headers require clang 16+
-          clang_version: ${{ runner.os == 'Windows' && '19.1.3' || env.CLANG_VERSION }}
+          clang_version: ${{ matrix.clang_version || env.CLANG_VERSION }}
           arch: ${{ matrix.arch }}
       # BOLT supports ELF binaries only, so include it for Linux packages only
       - name: Build & install LLVM incl. LLD, compiler-rt${{ runner.os == 'Linux' && ', BOLT' || '' }}
@@ -134,7 +157,7 @@ jobs:
         uses: ./.github/actions/1-setup
         with:
           clang_version: ${{ env.CLANG_VERSION }}
-          arch: ${{ matrix.arch }}
+          arch: x86_64
       - name: Build native llvm-tblgen
         shell: bash
         run: |