CI: Test standalone release tarball

Author: Flamefire

.github/workflows/release.yml

@@ -43,10 +43,22 @@ jobs:
           sudo apt-get install doxygen
           doc/gendoc.sh
           tar -czf documentation.tar.gz doc index.html
+
       - name: Create standalone version
         run: |
           bash tools/create_standalone.sh nowide_standalone_${{steps.get_tag.outputs.tag}}
           tar -czf  nowide_standalone.tar.gz nowide_standalone_${{steps.get_tag.outputs.tag}}
+      - name: Test standalone release tarball
+        run: |
+          tmp_dir=$(mktemp -d -p "$RUNNER_TEMP")
+          cd "$tmp_dir"
+          tar -xf "${{github.workspace}}/nowide_standalone.tar.gz"
+          src_dir="$PWD/nowide_standalone_${{steps.get_tag.outputs.tag}}"
+          mkdir build && cd build
+          cmake -DCMAKE_BUILD_TYPE=Debug -DCMAKE_INSTALL_PREFIX=${{runner.workspace}}/../install "$src_dir"
+          cmake --build . --config Debug --target install
+          ctest --output-on-failure -C Debug --verbose
+
       - name: Create Boost version
         run: |
             FOLDER="nowide_${{steps.get_tag.outputs.tag}}"
@@ -65,6 +77,7 @@ jobs:
           cmake -DBoost_DEBUG=ON -DCMAKE_BUILD_TYPE=Debug -DCMAKE_INSTALL_PREFIX=${{runner.workspace}}/../install "$src_dir"
           cmake --build . --config Debug --target install
           ctest --output-on-failure -C Debug --verbose
+
       - name: Create Release
         if: github.event_name == 'push'
         id: create_release