Add Github Actions

Add a Github action file to test builds on macOS, Windows and Ubuntu

.github/workflows/build.yml

@@ -0,0 +1,73 @@
+name: Build tests
+on:
+  - push
+env:
+  COMMON_ARGS:
+jobs:
+  build-windows:
+    strategy:
+      matrix:
+        configuration:
+          - Debug
+          - Release
+    runs-on: windows-2019
+    steps:
+      - uses: actions/checkout@v2
+      - uses: ilammy/msvc-dev-cmd@v1
+        with:
+          vsversion: 2019
+      - name: Configure project
+        run: |
+          mkdir build
+          cmake -B build --warn-uninitialized -Werror=dev -G Ninja -DLIBICAL_DEVMODE_MEMORY_CONSISTENCY=True -DCMAKE_BUILD_TYPE=${{ matrix.configuration }} -DLIBICAL_BUILD_TESTING=True -DENABLE_GTK_DOC=False -DICAL_GLIB=False -DGOBJECT_INTROSPECTION=False -DICAL_GLIB_VAPI=False
+        shell: cmd
+      - name: Build project
+        run: cmake --build build
+        shell: cmd
+      - name: Test project
+        run: cd build && ctest --test-dir .
+        shell: cmd
+
+  build-ubuntu:
+    strategy:
+      matrix:
+        configuration:
+          - Debug
+          - Release
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install dependencies
+        run: sudo apt-get -y install gtk-doc-tools xml-core libdb-dev gobject-introspection libgirepository1.0-dev valac cmake ninja-build
+      - name: Configure project
+        run: |
+          mkdir build
+          cmake -B build --warn-uninitialized -Werror=dev -G Ninja -DLIBICAL_DEVMODE_MEMORY_CONSISTENCY=False -DCMAKE_BUILD_TYPE=${{ matrix.configuration }} -DLIBICAL_BUILD_TESTING=True -DENABLE_GTK_DOC=True -DICAL_GLIB=True -DGOBJECT_INTROSPECTION=True -DICAL_GLIB_VAPI=True
+      - name: Build project
+        run: cmake --build build
+      - name: Test project
+        run: cd build && ctest --test-dir .
+
+  build-macos:
+    strategy:
+      matrix:
+        configuration:
+          - Debug
+          - Release
+    runs-on: macos-12
+    env:
+      XML_CATALOG_FILES: /usr/local/etc/xml/catalog
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install dependencies
+        run: brew install pkg-config ninja gtk-doc glib libxml2 icu4c berkeley-db docbook docbook-xsl
+      - name: Configure project
+        run: |
+          export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig
+          export XML_CATALOG_FILES=/usr/local/etc/xml/catalog
+          mkdir build
+          cmake -B build --warn-uninitialized -Werror=dev -G Ninja -DLIBICAL_DEVMODE_MEMORY_CONSISTENCY=True -DCMAKE_BUILD_TYPE=${{ matrix.configuration }} -DLIBICAL_BUILD_TESTING=True -DENABLE_GTK_DOC=True -DICAL_GLIB=True -DGOBJECT_INTROSPECTION=False -DICAL_GLIB_VAPI=False
+      - name: Build project
+        run: cmake --build build
+      - name: Test project
+        run: cd build && ctest --test-dir .

.reuse/dep5

@@ -9,7 +9,7 @@ Copyright: Copyright Contributors to the libical project
 License: LGPL-2.1-only OR MPL-2.0
 
 #tool configuration files
-Files: .clang-tidy .cmake-format.py .codespellrc .dir-locals.el .gitignore .krazy .mdlrc .mdlrc.rb .pre-commit-config.yaml .pylintrc .pep8 .travis.yml appveyor.yml
+Files: .clang-tidy .cmake-format.py .codespellrc .dir-locals.el .gitignore .krazy .mdlrc .mdlrc.rb .pre-commit-config.yaml .pylintrc .pep8 .travis.yml appveyor.yml .github/workflows/build.yml
 Copyright: Copyright Contributors to the libical project
 License: BSD-3-Clause