GitHub script to build FLUID docs

.github/workflows/build_fluid_docs.yml

@@ -0,0 +1,57 @@
+#
+# This script builds the FLUID User Handbook as html directory and pdf
+# document on a Linux machine.
+#
+
+name: 'Build FLUID User Handbook'
+
+# This job must be called explicitly form the 'Actions' tab in GitHub
+on:
+  workflow_dispatch:
+    inputs:
+      build-pdf:
+        type: boolean
+        description: Build pdf file as well
+        default: 'true'
+
+permissions:
+  contents: read
+
+jobs:
+  build-html:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Install prerequisites
+      run: sudo apt-get update -y && sudo apt-get install -y libwayland-dev wayland-protocols libdbus-1-dev libxkbcommon-dev libpango1.0-dev libgtk-3-dev
+
+    - name: Create Build Environment
+      run: cmake -E make_directory ${{github.workspace}}/build
+
+    - name: Configure CMake
+      shell: bash
+      working-directory: ${{github.workspace}}/build
+      run: |
+        cmake $GITHUB_WORKSPACE \
+          -D CMAKE_BUILD_TYPE=Debug \
+          -D CMAKE_CXX_STANDARD=11 \
+          -D CMAKE_CXX_EXTENSIONS=OFF \
+          -D CMAKE_C_FLAGS_INIT="-Wall -Wunused" \
+          -D CMAKE_CXX_FLAGS_INIT="-Wall -Wunused -Wsuggest-override" \
+          -D FLTK_BUILD_FLTK_OPTIONS=OFF \
+          -D FLTK_BUILD_FLUID=ON \
+          -D FLTK_BUILD_GL=OFF \
+          -D FLTK_BUILD_TEST=OFF \
+          -D FLTK_BUILD_FLUID_DOCS=ON
+
+    - name: Build
+      working-directory: ${{github.workspace}}/build
+      shell: bash
+      run: |
+        cmake --build . --config Debug --target fluid_docs
+        cmake --build . --config Debug --target fluid_pdf
+        ls $GITHUB_WORKSPACE/fluid/documentation
+        ls $GITHUB_WORKSPACE/fluid/documentation/html
+