Don't build assimp from source in CI

.github/workflows/build-test.yml

@@ -13,61 +13,16 @@ jobs:
         os: [ubuntu-latest, windows-latest, macos-latest]
         include:
           - os: ubuntu-latest
-            cmake: -DCMAKE_PREFIX_PATH="/home/runner/work/qtk/Qt/6.3.1/gcc_64/;../assimp"
+            cmake: -DCMAKE_PREFIX_PATH="/home/runner/work/qtk/Qt/6.3.1/gcc_64/"
           - os: windows-latest
-            cmake: -DCMAKE_PREFIX_PATH="D:/a/qtk/qtk/Qt/6.3.1/mingw81_64/;../assimp" -DASSIMP_NEW_INTERFACE=on
+            cmake: -DCMAKE_PREFIX_PATH="D:/a/qtk/qtk/Qt/6.3.1/mingw81_64/" -DASSIMP_NEW_INTERFACE=on
           - os: macos-latest
-            cmake: -DCMAKE_PREFIX_PATH="/home/runner/work/qtk/Qt/6.3.1/gcc_64/;../assimp" -DASSIMP_NEW_INTERFACE=on
+            cmake: -DCMAKE_PREFIX_PATH="/home/runner/work/qtk/Qt/6.3.1/gcc_64/" -DASSIMP_NEW_INTERFACE=on
 
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v3
 
-      - name: Clone Assimp
-        uses: actions/checkout@v3
-        with:
-          repository: 'assimp/assimp'
-          path: 'assimp'
-
-      - name: Build Assimp
-        shell: bash
-        run: |
-          pwd
-          ls
-          cmake -S assimp/ -B assimp/build/ -DCMAKE_INSTALL_PREFIX=../assimp && cmake --build assimp/build
-      - name: Install Qt
-        uses: jurplel/install-qt-action@v2
-        with:
-          version: '6.3.1'
-
-      #      - name: Install Assimp Linux
-      #        if: matrix.os == 'ubuntu-latest'
-      #        shell: bash
-      #        run: |
-      #          sudo apt install libassimp-dev -y
-      #
-      #      - name: Install Assimp MacOS
-      #        if: matrix.os == 'macos-latest'
-      #        shell: bash
-      #        run: |
-      #          brew install assimp
-      #
-      #      - name: Install Assimp Windows
-      #        if: matrix.os == 'windows-latest'
-      #        shell: bash
-      #        run: |
-      #          git clone https://github.com/Microsoft/vcpkg.git
-      #          cd vcpkg
-      #          ./bootstrap-vcpkg.sh
-      #          ./vcpkg integrate install
-      #          vcpkg install assimp
-
-      - name: Install Assimp MacOS
-        if: matrix.os == 'macos-latest'
-        shell: bash
-        run: |
-          brew install assimp
-
       - name: Build Qtk
         shell: bash
         run: |

CMakeLists.txt

@@ -22,12 +22,13 @@ set(CMAKE_CXX_STANDARD_REQUIRED ON)
 # Qtk build options
 option(QTK_DEBUG "Enable debugger" ON)
 option(BUILD_SHARED_LIBS "Build shared library" ON)
-option(UPDATE_SUBMODULES "Update external project (assimp) git submodule" ON)
 
 # Qt options
 set(QT_DIR "$ENV{HOME}/Code/Clones/Qt/6.3.1/gcc_64/" CACHE PATH "Path to Qt6")
 
 # Options for bringing your own assimp installation; Otherwise not needed
+# + If assimp is available system-wide we can just set UPDATE_SUBMODULES OFF
+option(UPDATE_SUBMODULES "Update external project (assimp) git submodule" ON)
 set(ASSIMP_DIR "" CACHE PATH "Path to local installation of assimp")
 option(ASSIMP_NEW_INTERFACE "Use the assimp::assimp interface (WIN / OSX)" OFF)