Sets C++ compiler

Author: StephenNneji

.github/workflows/build_wheel.yml

@@ -36,6 +36,7 @@ jobs:
         run: |
           brew install llvm libomp
           echo "export CC=/usr/local/opt/llvm/bin/clang" >> ~/.bashrc
+          echo "export CXX=/usr/local/opt/llvm/bin/clang++" >> ~/.bashrc
           echo "export CFLAGS=\"$CFLAGS -I/usr/local/opt/libomp/include\"" >> ~/.bashrc
           echo "export CXXFLAGS=\"$CXXFLAGS -I/usr/local/opt/libomp/include\"" >> ~/.bashrc
           echo "export LDFLAGS=\"$LDFLAGS -Wl,-rpath,/usr/local/opt/libomp/lib -L/usr/local/opt/libomp/lib -lomp\"" >> ~/.bashrc
@@ -45,6 +46,7 @@ jobs:
         run: |
           brew install llvm libomp
           echo "export CC=/opt/homebrew/opt/llvm/bin/clang" >> ~/.bashrc
+          echo "export CXX=/opt/homebrew/opt/llvm/bin/clang++" >> ~/.bashrc
           echo "export CFLAGS=\"$CFLAGS -I/opt/homebrew/opt/libomp/include\"" >> ~/.bashrc
           echo "export CXXFLAGS=\"$CXXFLAGS -I/opt/homebrew/opt/libomp/include\"" >> ~/.bashrc
           echo "export LDFLAGS=\"$LDFLAGS -Wl,-rpath,/opt/homebrew/opt/libomp/lib -L/opt/homebrew/opt/libomp/lib -lomp\"" >> ~/.bashrc

.github/workflows/run_tests.yml

@@ -40,6 +40,7 @@ jobs:
         run: |
           brew install llvm libomp
           echo "export CC=/usr/local/opt/llvm/bin/clang" >> ~/.bashrc
+          echo "export CXX=/usr/local/opt/llvm/bin/clang++" >> ~/.bashrc
           echo "export CFLAGS=\"$CFLAGS -I/usr/local/opt/libomp/include\"" >> ~/.bashrc
           echo "export CXXFLAGS=\"$CXXFLAGS -I/usr/local/opt/libomp/include\"" >> ~/.bashrc
           echo "export LDFLAGS=\"$LDFLAGS -Wl,-rpath,/usr/local/opt/libomp/lib -L/usr/local/opt/libomp/lib -lomp\"" >> ~/.bashrc