Add GitHub Action to build repository.

.editorconfig

@@ -18,3 +18,7 @@ indent_style = space
 [*.md]
 trim_trailing_whitespace = false
 max_line_length = 80
+
+[*.yml]
+indent_style = space
+indent_size  = 2

.github/workflows/ccpp.yml

@@ -0,0 +1,99 @@
+name: C/C++ CI
+
+on: [push]
+
+jobs:
+  build:
+    strategy:
+      matrix:
+        platform: [darwin, linux]
+        include:
+          - platform: darwin
+            arch: x64
+            build: osx64_clang
+            config: osx-release64
+            image: macos-latest
+          - platform: linux
+            arch: x64
+            build: linux64_gcc
+            config: linux-release64
+            image: ubuntu-latest
+          # - platform: windows
+          #   arch: x64
+          #   build: win64_vs2017
+          #   config: vs2017-release64
+          #   image: windows-latest
+    runs-on: ${{ matrix.image }}
+    steps:
+      - name: Checkout bgfx.
+        uses: actions/checkout@v1
+        with:
+          fetch-depth: 1
+          path: ./bgfx
+      - name: Checkout bx.
+        uses: actions/checkout@v1
+        with:
+          fetch-depth: 1
+          path: ./bx
+          ref: refs/heads/master
+          repository: bkaradzic/bx
+      - name: Checkout bImg.
+        uses: actions/checkout@v1
+        with:
+          fetch-depth: 1
+          path: ./bimg
+          ref: refs/heads/master
+          repository: bkaradzic/bimg
+      # TODO: cache this dependency.
+      - name: Install build dependencies (Linux).
+        if: matrix.platform == 'linux'
+        # See: https://bkaradzic.github.io/bgfx/build.html#linux
+        run: sudo apt-get install libgl1-mesa-dev x11proto-core-dev libx11-dev
+      - name: Generate project files.
+        run: make
+      - name: Compile.
+        run: make ${{matrix.config}}
+      - name: Fix rpath in OSX.
+        if: matrix.platform == 'darwin'
+        run: install_name_tool -id "@rpath/libbgfx-shared-libRelease.dylib" ./.build/${{ matrix.build }}/bin/libbgfx-shared-libRelease.dylib
+      - name: Copy relevant binaries to build artifact.
+        run: |
+          mkdir -p ../output/
+          cp -r ./.build/${{ matrix.build }}/bin/libbgfx-shared-libRelease* ../output/
+          cp -r ./.build/${{ matrix.build }}/bin/shadercRelease* ../output/
+          cp -r ./.build/${{ matrix.build }}/bin/texturecRelease* ../output/
+      - name: Upload binaries as artifact.
+        uses: actions/upload-artifact@v1
+        with:
+          name: binaries-${{ matrix.platform }}-${{ matrix.arch }}
+          path: ../output
+      - name: Upload failed build directory.
+        if: failure()
+        uses: actions/upload-artifact@v1
+        with:
+          name: debug-${{ matrix.platform }}-${{ matrix.arch }}
+          path: .
+  release:
+    runs-on: ubuntu-latest
+    needs: build
+    steps:
+      - uses: actions/checkout@v1
+        with:
+          fetch-depth: 1
+          path: ./bgfx
+      - uses: actions/checkout@v1
+        with:
+          fetch-depth: 1
+          path: ./bx
+          ref: refs/heads/master
+          repository: bkaradzic/bx
+      - name: Copy include headers to build output.
+        run: |
+          mkdir -p ./output/include/bgfx ./output/include/bx
+          cp -r ./bgfx/include/bgfx/* ./output/include/bgfx
+          cp -r ./bx/include/bx/platform.h ./output/include/bx
+        working-directory: ${{ github.workspace }}/..
+      - uses: actions/upload-artifact@v1
+        with:
+          name: output
+          path: ../output