Update Github actions: Use cmake to build, add macOS and Windows

.github/actions/build-windows/action.yml

@@ -0,0 +1,20 @@
+name: Windows Build
+
+runs:
+    using: composite
+
+    steps:
+      - name: Create build directory
+        run: mkdir build
+        shell: bash
+
+      - name: Configure
+        run: cmake -LA .. -DCMAKE_TOOLCHAIN_FILE=C:/vcpkg/scripts/buildsystems/vcpkg.cmake
+        shell: bash
+        working-directory: build
+
+      - name: Build
+        run: cmake --build .
+        shell: bash
+        working-directory: build
+

.github/actions/build/action.yml

@@ -0,0 +1,24 @@
+name: Build
+
+runs:
+    using: composite
+
+    steps:
+      - name: Create build directory
+        run: mkdir build
+        shell: bash
+
+      - name: Configure
+        run: cmake -LA .. -DCMAKE_BUILD_TYPE=${BUILD_TYPE}
+        shell: bash
+        working-directory: build
+
+      - name: Build
+        run: make VERBOSE=1
+        shell: bash
+        working-directory: build
+
+      - name: Run outline
+        run: build/tools/osmpbf-outline resources/sample.pbf
+        shell: bash
+

.github/actions/install-macos/action.yml

@@ -0,0 +1,10 @@
+name: Install Prerequisites on macOS
+
+runs:
+  using: composite
+
+  steps:
+    - name: Install packages
+      run: brew install protobuf
+      shell: bash
+

.github/actions/install-ubuntu/action.yml

@@ -0,0 +1,10 @@
+name: Install Prerequisites on Ubuntu
+
+runs:
+  using: composite
+
+  steps:
+    - name: Install packages
+      run: sudo apt-get install -yq protobuf-compiler libprotobuf-dev
+      shell: bash
+

.github/actions/install-windows/action.yml

@@ -0,0 +1,10 @@
+name: Install Prerequisites on Windows
+
+runs:
+  using: composite
+
+  steps:
+    - name: Install packages
+      run: vcpkg install protobuf:x64-windows zlib:x64-windows
+      shell: powershell
+

.github/workflows/c.yml

@@ -3,10 +3,94 @@ name: C CI
 on: [push]
 
 jobs:
-  build:
+  ubuntu16:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-16.04
-
+    env:
+      CC: gcc
+      CXX: g++
+      CXXFLAGS: -Werror -Wall -pedantic
+      BUILD_TYPE: Debug
     steps:
       - uses: actions/checkout@v2
-      - run: sudo apt-get install protobuf-compiler libprotobuf-dev
+      - uses: ./.github/actions/install-ubuntu
+      - uses: ./.github/actions/build
+
+  ubuntu18:
+    runs-on: ubuntu-18.04
+    env:
+      CC: gcc
+      CXX: g++
+      CXXFLAGS: -Werror -Wall -pedantic
+      BUILD_TYPE: Debug
+    steps:
+      - uses: actions/checkout@v2
+      - uses: ./.github/actions/install-ubuntu
+      - uses: ./.github/actions/build
+
+  ubuntu20:
+    runs-on: ubuntu-20.04
+    env:
+      CC: gcc
+      CXX: g++
+      CXXFLAGS: -Werror -Wall -pedantic
+      BUILD_TYPE: Debug
+    steps:
+      - uses: actions/checkout@v2
+      - uses: ./.github/actions/install-ubuntu
+      - uses: ./.github/actions/build
+
+  ubuntu20-clang:
+    runs-on: ubuntu-20.04
+    env:
+      CC: clang-10
+      CXX: clang++-10
+      CXXFLAGS: -Werror -Wall -pedantic
+      BUILD_TYPE: Debug
+    steps:
+      - uses: actions/checkout@v2
+      - uses: ./.github/actions/install-ubuntu
+      - uses: ./.github/actions/build
+
+  ubuntu20-release:
+    runs-on: ubuntu-20.04
+    env:
+      CC: gcc
+      CXX: g++
+      # disabled array-bounds warning because it is triggered by code generated by the protoc compiler
+      CXXFLAGS: -Werror -Wall -pedantic -Wno-array-bounds
+      BUILD_TYPE: Release
+    steps:
+      - uses: actions/checkout@v2
+      - uses: ./.github/actions/install-ubuntu
+      - uses: ./.github/actions/build
+
+  ubuntu20-make:
+    runs-on: ubuntu-20.04
+    env:
+      CC: gcc
+      CXX: g++
+      CXXFLAGS: -Werror -Wall -pedantic
+    steps:
+      - uses: actions/checkout@v2
+      - uses: ./.github/actions/install-ubuntu
       - run: make -C src
+
+  macos:
+    runs-on: macos-latest
+    env:
+      CC: clang
+      CXX: clang++
+      CXXFLAGS: -Werror -Wall -pedantic
+      BUILD_TYPE: Debug
+    steps:
+      - uses: actions/checkout@v2
+      - uses: ./.github/actions/install-macos
+      - uses: ./.github/actions/build
+
+  windows:
+    runs-on: windows-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: ./.github/actions/install-windows
+      - uses: ./.github/actions/build-windows
+

README.md

@@ -7,6 +7,8 @@ data that uses Google Protocol Buffers as low-level storage.
 
 For more information see https://wiki.openstreetmap.org/wiki/PBF_Format .
 
+[![Github Actions C Build Status](https://github.com/openstreetmap/OSM-binary/workflows/C%20CI/badge.svg?branch=master)](https://github.com/openstreetmap/OSM-binary/actions)
+[![Github Actions Java Build Status](https://github.com/openstreetmap/OSM-binary/workflows/Java%20CI/badge.svg?branch=master)](https://github.com/openstreetmap/OSM-binary/actions)
 
 ## Java Version