add build job for clang 10 on ubuntu

.github/workflows/ci.yaml

@@ -117,6 +117,40 @@ jobs:
     - name: run tests
       run: build/tests
 
+  build-ubuntu-clang10:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: install boost
+      run: |
+        sudo apt install libboost-all-dev
+    - name: vcpkg install dependencies
+      run: |
+        vcpkg install catch2 fmt
+    - name: install alpaka
+      run: |
+        git clone https://github.com/alpaka-group/alpaka.git
+        mkdir alpaka/build
+        cd alpaka/build
+        cmake .. -DCMAKE_TOOLCHAIN_FILE=/usr/local/share/vcpkg/scripts/buildsystems/vcpkg.cmake
+        sudo cmake --build . --target install
+    - name: install Vc
+      run: |
+        git clone https://github.com/VcDevel/Vc.git
+        mkdir Vc/build
+        cd Vc/build
+        cmake .. -DBUILD_TESTING=OFF -DCMAKE_TOOLCHAIN_FILE=/usr/local/share/vcpkg/scripts/buildsystems/vcpkg.cmake
+        sudo cmake --build . --target install
+    - name: cmake
+      run: |
+        mkdir build
+        cd build
+        CXX=clang++-10 cmake .. -DCMAKE_BUILD_TYPE=$CONFIG -DASAN_FOR_TESTS=ON -DALPAKA_ACC_CPU_B_SEQ_T_SEQ_ENABLE=ON -DCMAKE_TOOLCHAIN_FILE=/usr/local/share/vcpkg/scripts/buildsystems/vcpkg.cmake
+    - name: build tests + examples
+      run: cmake --build build -j $THREADS
+    - name: run tests
+      run: build/tests
+
   build-windows:
     runs-on: windows-latest
     env: