intel mac apple-clang too outdated; attempting classic llvm build

Author: CodeByDrescher

.github/workflows/cd.yml

@@ -54,6 +54,7 @@ jobs:
         if: matrix.platform == 'macos-13'
         shell: bash
         run: |
+          brew install llvm
           python3 -m pip install conan
           conan --version
           mkdir -p ~/.conan2/profiles/
@@ -100,10 +101,18 @@ jobs:
         run: |
           conan install . --output-folder build --build=missing -o include_messaging=False
 
-      - name: Install Dependencies through Conan on MacOS
-        if: matrix.platform == 'macos-13' || matrix.platform == 'macos-latest'
+      - name: Install Dependencies through Conan on ARM MacOS
+        if: matrix.platform == 'macos-latest'
+        shell: bash
+        run: |
+          conan install . --output-folder build --build=missing
+
+      - name: Install Dependencies through Conan on Intel MacOS
+        if: matrix.platform == 'macos-13'
         shell: bash
         run: |
+          CC=$(brew --prefix llvm)/bin/clang \
+          CXX=$(brew --prefix llvm)/bin/clang++ \
           conan install . --output-folder build --build=missing
 
       - name: Install Dependencies through Conan on Linux <x86_64>
@@ -139,16 +148,31 @@ jobs:
           cmake -B . -S .. -G "Ninja" -DCMAKE_TOOLCHAIN_FILE="conan_toolchain.cmake" -DCMAKE_BUILD_TYPE=Release
           cmake --build . --config Release
 
-      - name: Build Unix
-        if: matrix.platform == 'ubuntu-latest' || matrix.platform == 'ubuntu-24.04-arm' || matrix.platform == 'macos-13' || matrix.platform == 'macos-latest'
+      - name: Build Non-Intel-Mac Unix
+        if: matrix.platform == 'ubuntu-latest' || matrix.platform == 'ubuntu-24.04-arm' || matrix.platform == 'macos-latest'
         run: |
           echo "working dir is $PWD"
-          
           cd build
           source conanbuild.sh
           cmake -B . -S .. -G "Ninja" -DCMAKE_TOOLCHAIN_FILE="conan_toolchain.cmake" -DCMAKE_BUILD_TYPE=Release
           cmake --build . --config Release
 
+      - name: Build Intel Mac
+        if: matrix.platform == 'macos-13'
+        run: |
+          echo "working dir is $PWD"
+          cd build
+          source conanbuild.sh
+          CC=$(brew --prefix llvm)/bin/clang \
+          CXX=$(brew --prefix llvm)/bin/clang++ \
+          cmake -B . -S .. -G "Ninja" -DCMAKE_TOOLCHAIN_FILE="conan_toolchain.cmake" -DCMAKE_BUILD_TYPE=Release \
+            -DCMAKE_C_COMPILER=/usr/local/opt/llvm/bin/clang \
+            -DCMAKE_CXX_COMPILER=/usr/local/opt/llvm/bin/clang++ \
+            -DCMAKE_AR=/usr/local/opt/llvm/bin/llvm-ar \
+            -DCMAKE_RANLIB=/usr/local/opt/llvm/bin/llvm-ranlib \
+            -DCMAKE_LINKER=/usr/local/opt/llvm/bin/ld.lld
+          cmake --build . --config Release
+
       - name: Test Windows
         if: matrix.platform == 'windows-latest' || matrix.platform == 'windows-11-arm'
         run: |

conan-profiles/CI-CD/MacOS-AMD64_profile.txt

@@ -1,8 +1,11 @@
 [settings]
 arch=x86_64
 build_type=Release
-compiler=apple-clang
+compiler=clang
 compiler.cppstd=20
 compiler.libcxx=libc++
-compiler.version=15
-os=Macos
+compiler.version=19
+os=Macos
+
+[conf]
+tools.build:compiler_executables={"c": "/usr/local/opt/llvm/bin/clang", "cpp": "/usr/local/opt/llvm/bin/clang++"}