(Re)add ARM support on Windows and Linux

.github/workflows/LLVMClang.yml

@@ -1,6 +1,8 @@
 name: LLVM+Clang
 
 on:
+  pull_request:
+    branches: [ main ]
   workflow_dispatch:
 
 jobs:

.github/workflows/buildThirdPartyLibrary.yml

@@ -19,33 +19,46 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - name: 'Windows release'
+          - name: 'Windows release (Intel)'
             os: windows-latest
+            target_architecture: Intel
             build_type: Release
-          - name: 'Windows debug'
+          - name: 'Windows debug (Intel)'
             os: windows-latest
+            target_architecture: Intel
             build_type: Debug
-          - name: 'Linux'
-            os: ubuntu-20.04
-            # Note: we must use ubuntu-20.04 rather than ubuntu-latest (i.e. ubuntu-22.04 at this stage). Indeed,
-            #       Ubuntu 22.04's copy of glibc doesn't include libpthread anymore (see
-            #       https://developers.redhat.com/articles/2021/12/17/why-glibc-234-removed-libpthread). Yet, to build
-            #       our Python wheels on Linux, we have no choice but to use manylinux_2_28, which relies on a version
-            #       of glibc with libpthread, hence getting various messages about __libc_single_threaded being
-            #       undefined when trying to build our Python wheels using third-party libraries built on ubuntu-22.04.
+          - name: 'Windows release (ARM)'
+            os: windows-latest
+            target_architecture: ARM
+            build_type: Release
+          - name: 'Windows debug (ARM)'
+            os: windows-latest
+            target_architecture: ARM
+            build_type: Debug
+          - name: 'Linux (Intel)'
+            os: ubuntu-latest
+            target_architecture: Intel
+            build_type: Release
+          - name: 'Linux (ARM)'
+            os: ubuntu-latest
+            target_architecture: ARM
             build_type: Release
           - name: 'macOS (Intel)'
-            os: macos-13
+            os: macos-latest
+            target_architecture: Intel
             build_type: Release
           - name: 'macOS (ARM)'
             os: macos-latest
+            target_architecture: ARM
             build_type: Release
     env:
       BUILDCACHE_ACCURACY: STRICT
       BUILDCACHE_COMPRESS_FORMAT: ZSTD
       BUILDCACHE_DEBUG: -1
       BUILDCACHE_LOG_FILE: ""
     steps:
+      - name: Check the version of Clang
+        run: clang --version
       - name: Check out libOpenCOR
         uses: actions/checkout@v4
       - name: Install CMake and Ninja
@@ -54,14 +67,22 @@ jobs:
         uses: cscouto/buildcache-action@v1
         with:
           cache_key: libraries-${{ matrix.os }}-${{ matrix.shared_libs }}
-      - name: Configure MSVC
-        if: ${{ runner.os == 'Windows' }}
-        uses: ilammy/msvc-dev-cmd@v1
+      - name: Install LLVM+Clang
+        uses: KyleMayes/install-llvm-action@v2
+        with:
+          version: 18
+      - name: Install libncurses5 (Linux only)
+        if: ${{ matrix.os == 'ubuntu-latest' }}
+        run: |
+          sudo apt update
+          sudo apt install libncurses5
+      - name: Check the version of Clang
+        run: clang --version
       - name: Configure libOpenCOR
         run: |
           mkdir build
           cd build
-          ${{ matrix.cmake_prereqs }} cmake -G Ninja -DBUILD_TYPE=${{ matrix.build_type }} -DONLY_BUILD_THIRD_PARTY_LIBRARIES=ON -DPREBUILT_${{ inputs.third_party_library_name }}=OFF ..
+          cmake -G Ninja -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ -DTARGET_ARCHITECTURE=${{ matrix.target_architecture }} -DBUILD_TYPE=${{ matrix.build_type }} -DONLY_BUILD_THIRD_PARTY_LIBRARIES=ON -DPREBUILT_${{ inputs.third_party_library_name }}=OFF ${{ env.DLLVMCLANG_LLVM_TABLEGEN }} ${{ env.DLLVMCLANG_CLANG_TABLEGEN }} ..
       - name: Upload library artifact
         if: ${{ !startsWith(github.ref, 'refs/tags/v') }}
         uses: actions/upload-artifact@v4

.github/workflows/cd.yml

@@ -15,18 +15,38 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - name: 'Windows static library'
+          - name: 'Windows static library (Intel)'
             os: windows-latest
+            msvc_arch: amd64
             shared_libs: OFF
-          - name: 'Windows shared library'
+          - name: 'Windows shared library (Intel)'
             os: windows-latest
+            msvc_arch: amd64
             shared_libs: ON
-          - name: 'Linux static library'
+          - name: 'Windows static library (ARM)'
+            os: windows-latest
+            msvc_arch: amd64_arm64
+            shared_libs: OFF
+          - name: 'Windows shared library (ARM)'
+            os: windows-latest
+            msvc_arch: amd64_arm64
+            shared_libs: ON
+          - name: 'Linux static library (Intel)'
+            os: ubuntu-latest
+            shared_libs: OFF
+          - name: 'Linux shared library (Intel)'
+            os: ubuntu-latest
+            shared_libs: ON
+          - name: 'Linux static library (ARM)'
             os: ubuntu-latest
+            arch: arm
             shared_libs: OFF
-          - name: 'Linux shared library'
+            cmake_prereqs: CC=aarch64-linux-gnu-gcc CXX=aarch64-linux-gnu-g++
+          - name: 'Linux shared library (ARM)'
             os: ubuntu-latest
+            arch: arm
             shared_libs: ON
+            cmake_prereqs: CC=aarch64-linux-gnu-gcc CXX=aarch64-linux-gnu-g++
           - name: 'macOS static library (Intel)'
             os: macos-13
             shared_libs: OFF
@@ -47,6 +67,11 @@ jobs:
     steps:
       - name: Check out libOpenCOR
         uses: actions/checkout@v4
+      - name: Install ARM compiler
+        if: ${{ matrix.arch == 'arm' }}
+        run: |
+          sudo apt update
+          sudo apt install gcc-aarch64-linux-gnu g++-aarch64-linux-gnu
       - name: Install CMake and Ninja
         uses: lukka/get-cmake@latest
       - name: Install buildcache
@@ -56,11 +81,13 @@ jobs:
       - name: Configure MSVC
         if: ${{ runner.os == 'Windows' }}
         uses: ilammy/msvc-dev-cmd@v1
+        with:
+          arch: ${{ matrix.msvc_arch }}
       - name: Configure libOpenCOR
         run: |
           mkdir build
           cd build
-          cmake -G Ninja -DBUILD_TYPE=Release -DCODE_ANALYSIS=OFF -DCODE_COVERAGE=OFF -DDOCUMENTATION=OFF -DJAVASCRIPT_BINDINGS=OFF -DMEMORY_CHECKS=OFF -DPYTHON_BINDINGS=OFF -DPYTHON_UNIT_TESTING=OFF -DSHARED_LIBS=${{ matrix.shared_libs }} -DUNIT_TESTING=OFF ..
+          ${{ matrix.cmake_prereqs }} cmake -G Ninja -DBUILD_TYPE=Release -DCODE_ANALYSIS=OFF -DCODE_COVERAGE=OFF -DDOCUMENTATION=OFF -DJAVASCRIPT_BINDINGS=OFF -DMEMORY_CHECKS=OFF -DPYTHON_BINDINGS=OFF -DPYTHON_UNIT_TESTING=OFF -DSHARED_LIBS=${{ matrix.shared_libs }} -DUNIT_TESTING=OFF ..
       - name: Build libOpenCOR
         run: |
           cd build

.github/workflows/ci.yml

@@ -1,8 +1,8 @@
 name: CI
 
 on:
-  pull_request:
-    branches: [ main ]
+  # pull_request:
+  #   branches: [ main ]
   workflow_dispatch:
 
 jobs:
@@ -13,8 +13,9 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - name: 'Windows static library'
+          - name: 'Windows static library (Intel)'
             os: windows-latest
+            msvc_arch: amd64
             build_type: Release
             code_analysis: OFF
             code_coverage: OFF
@@ -28,8 +29,9 @@ jobs:
             unit_testing: ON
             target: unit_testing
             install_uninstall_and_package: ON
-          - name: 'Windows shared library'
+          - name: 'Windows shared library (Intel)'
             os: windows-latest
+            msvc_arch: amd64
             build_type: Release
             code_analysis: OFF
             code_coverage: OFF
@@ -43,7 +45,39 @@ jobs:
             unit_testing: ON
             target: unit_testing
             install_uninstall_and_package: ON
-          - name: 'Linux static library'
+          - name: 'Windows static library (ARM)'
+            os: windows-latest
+            msvc_arch: amd64_arm64
+            build_type: Release
+            code_analysis: OFF
+            code_coverage: OFF
+            documentation: OFF
+            javascript_bindings: OFF
+            javascript_unit_testing: OFF
+            memory_checks: OFF
+            python_bindings: OFF
+            python_unit_testing: OFF
+            shared_libs: OFF
+            unit_testing: ON
+            target: unit_testing
+            install_uninstall_and_package: ON
+          - name: 'Windows shared library (ARM)'
+            os: windows-latest
+            msvc_arch: amd64_arm64
+            build_type: Release
+            code_analysis: OFF
+            code_coverage: OFF
+            documentation: OFF
+            javascript_bindings: OFF
+            javascript_unit_testing: OFF
+            memory_checks: OFF
+            python_bindings: OFF
+            python_unit_testing: OFF
+            shared_libs: ON
+            unit_testing: ON
+            target: unit_testing
+            install_uninstall_and_package: ON
+          - name: 'Linux static library (Intel)'
             os: ubuntu-latest
             build_type: Release
             code_analysis: OFF
@@ -58,7 +92,7 @@ jobs:
             unit_testing: ON
             target: unit_testing
             install_uninstall_and_package: ON
-          - name: 'Linux shared library'
+          - name: 'Linux shared library (Intel)'
             os: ubuntu-latest
             build_type: Release
             code_analysis: OFF
@@ -73,6 +107,40 @@ jobs:
             unit_testing: ON
             target: unit_testing
             install_uninstall_and_package: ON
+          - name: 'Linux static library (ARM)'
+            os: ubuntu-latest
+            arch: arm
+            build_type: Release
+            code_analysis: OFF
+            code_coverage: OFF
+            documentation: OFF
+            javascript_bindings: OFF
+            javascript_unit_testing: OFF
+            memory_checks: OFF
+            python_bindings: OFF
+            python_unit_testing: OFF
+            shared_libs: OFF
+            unit_testing: ON
+            target: unit_testing
+            install_uninstall_and_package: ON
+            context: CC=aarch64-linux-gnu-gcc CXX=aarch64-linux-gnu-g++
+          - name: 'Linux shared library (ARM)'
+            os: ubuntu-latest
+            arch: arm
+            build_type: Release
+            code_analysis: OFF
+            code_coverage: OFF
+            documentation: OFF
+            javascript_bindings: OFF
+            javascript_unit_testing: OFF
+            memory_checks: OFF
+            python_bindings: OFF
+            python_unit_testing: OFF
+            shared_libs: ON
+            unit_testing: ON
+            target: unit_testing
+            install_uninstall_and_package: ON
+            context: CC=aarch64-linux-gnu-gcc CXX=aarch64-linux-gnu-g++
           - name: 'macOS static library (Intel)'
             os: macos-13
             build_type: Release
@@ -325,6 +393,11 @@ jobs:
         uses: actions/setup-python@v5
         with:
           python-version: '3.13'
+      - name: Install ARM compiler
+        if: ${{ matrix.arch == 'arm' }}
+        run: |
+          sudo apt update
+          sudo apt install gcc-aarch64-linux-gnu g++-aarch64-linux-gnu
       - name: Install CMake and Ninja
         uses: lukka/get-cmake@latest
       - name: Install buildcache
@@ -334,6 +407,8 @@ jobs:
       - name: Configure MSVC
         if: ${{ runner.os == 'Windows' }}
         uses: ilammy/msvc-dev-cmd@v1
+        with:
+          arch: ${{ matrix.msvc_arch }}
       - name: Install LLVM
         if: ${{ matrix.code_coverage == 'ON' }}
         run: |