Try ln

.github/workflows/test_build.yml

@@ -38,18 +38,19 @@ jobs:
       - name: Check g++-11 for ubuntu
         if: matrix.os == 'ubuntu-20.04'
         run: |
-          g++ --version
-          gcc --version
           ls /usr/bin/gcc*
           ls /usr/bin/g++*
+          ln -sf /usr/bin/gcc-11 /usr/bin/gcc
+          ln -sf /usr/bin/g++-11 /usr/bin/g++
+          g++ --version
+          gcc --version
       - name: Build wheels
         run: |
           python -m pip install --upgrade pip
           python -m cibuildwheel --output-dir wheelhouse
         env:
           CIBW_ENVIRONMENT_MACOS: >
             PATH="/usr/local/opt/llvm/bin:$PATH" LDFLAGS="-L/usr/local/opt/llvm/lib" CPPFLAGS="-I/usr/local/opt/llvm/include" CXX="/usr/local/bin/g++-11"
-          CIBW_ENVIRONMENT_LINUX: CXX=${{ steps.install_cc.outputs.cxx }}
           CIBW_BUILD: cp39-*
           CIBW_SKIP: "*musllinux* *manylinux_x86_64"
           CIBW_BEFORE_BUILD_LINUX: 'if [ $(python -c "import sys; print(sys.version_info[1])") -ge 9 ]; then python -m pip install "numpy<2.0.0" --config-settings=setup-args="-Dallow-noblas=true"; fi'