changed workflow, introduced fix for github action

Author: StephanKa

.github/workflows/build_cmake.yml

@@ -269,13 +269,13 @@ jobs:
       run:   |
              sudo bash -c "$(wget -O - https://apt.llvm.org/llvm.sh)"
              sudo apt update
-             sudo apt install ninja-build ${{ 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
-             libxcb-xkb-dev libxcb-icccm4-dev libxcb-image0-dev libxcb-keysyms1-dev libxcb-randr0-dev libxcb-shape0-dev
-             libxcb-sync-dev libxcb-xfixes0-dev libxcb-xinerama0-dev libxcb-dri3-dev uuid-dev libxcb-cursor-dev
-             libxcb-util-dev libxcb-util0-dev libx11-xcb1 libx11-xcb libx11-dev libgl-dev libgl1-mesa-dev
+             sudo apt install ninja-build ${{ 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 |
+             libxcb-xkb-dev libxcb-icccm4-dev libxcb-image0-dev libxcb-keysyms1-dev libxcb-randr0-dev libxcb-shape0-dev |
+             libxcb-sync-dev libxcb-xfixes0-dev libxcb-xinerama0-dev libxcb-dri3-dev uuid-dev libxcb-cursor-dev |
+             libxcb-util-dev libxcb-util0-dev libx11-xcb1 libx11-xcb libx11-dev libgl-dev libgl1-mesa-dev |
       shell: bash
 
     - name: Configure via CMake

CMakeLists.txt

@@ -7,6 +7,11 @@ INCLUDE(cmake/Conan.cmake)
 # when compiling with PCH enabled
 SET(CMAKE_CXX_EXTENSIONS OFF)
 
+# temporarily Workaround due to problems in github actions
+IF(CMAKE_CXX_COMPILER_ID MATCHES ".*Clang")
+    SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++")
+ENDIF()
+
 INCLUDE(cmake/Options.cmake)
 
 # Set the project name to your project name, my project isn't very descriptive