install clang default

Author: StephanKa

.github/workflows/build_cmake.yml

@@ -324,7 +324,7 @@ jobs:
              sudo apt remove clang* llvm*
              sudo bash -c "$(wget -O - https://apt.llvm.org/llvm.sh)"
              sudo apt update
-             sudo apt install ninja-build build-essential ccache ${{ matrix.compiler.pkgs }} libx11-xcb-dev libfontenc-dev libice-dev \
+             sudo apt install clang ninja-build build-essential ccache ${{ matrix.compiler.pkgs }} libx11-xcb-dev libfontenc-dev libice-dev \
              libsm-dev libxaw7-dev libxcomposite-dev libxcursor-dev libxdamage-dev libxext-dev libxfixes-dev libxi-dev \
              libxinerama-dev libxkbfile-dev libxmu-dev libxmuu-dev libxpm-dev libxrandr-dev libxrender-dev libxres-dev \
              libxss-dev libxt-dev libxtst-dev libxv-dev libxxf86vm-dev libxcb-render0-dev libxcb-render-util0-dev \