Did not work, trying something else

Author: yambati03

.github/scripts/python_wheels/cibw_before_all.sh

@@ -24,8 +24,10 @@ if [ "$(uname)" == "Linux" ]; then
     ./b2 install --prefix=/opt/boost --with=all 
     cd ..
 elif [ "$(uname)" == "Darwin" ]; then
-    brew install wget cmake ninja boost
-    sudo xcode-select -switch /Applications/Xcode.app
+    brew install wget cmake boost
+
+    export CC=clang
+    export CXX=clang++
 fi
 
 $(which $PYTHON) -m pip install -r $PROJECT_DIR/python/dev_requirements.txt
@@ -52,6 +54,7 @@ cmake $PROJECT_DIR \
     -DCMAKE_INSTALL_PREFIX=$PROJECT_DIR/gtsam_install
 
 cd $PROJECT_DIR/build/python
+echo | gcc -E -dM - | grep __GNUC__
 
 # Install the Python wrapper module and generate Python stubs
 if [ "$(uname)" == "Linux" ]; then

.github/workflows/build-cibw.yml

@@ -109,12 +109,6 @@ jobs:
           echo "DEVELOP=1" >> $GITHUB_ENV
           echo "TIMESTAMP=${{ needs.get_system_time.outputs.timestamp }}" >> $GITHUB_ENV
 
-      - name: Set compiler to clang if on MacOS
-        if: startsWith(matrix.os, 'macos')
-        run: |
-          echo "CC=clang" >> $GITHUB_ENV
-          echo "CXX=clang++" >> $GITHUB_ENV
-
       - name: Install Dependencies
         run: |
           python3 -m pip install -r python/dev_requirements.txt