add CMake FetchContent support

.github/workflows/darwin.yml

@@ -0,0 +1,34 @@
+name: darwin
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+env:
+  # Customize the CMake build type here (Release, Debug, RelWithDebInfo, etc.)
+  BUILD_TYPE: Release
+  ENET_STATIC: 1
+  ENET_TEST: 1
+  ENET_SHARED: 0
+
+jobs:
+  cmake-x64:
+    # The CMake configure and build commands are platform agnostic and should work equally
+    # well on Windows or Mac.  You can convert this to a matrix build if you need
+    # cross-platform coverage.
+    # See: https://docs.github.com/en/free-pro-team@latest/actions/learn-github-actions/managing-complex-workflows#using-a-build-matrix
+    runs-on: macos-latest
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Configure CMake
+      # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.
+      # See https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html?highlight=cmake_build_type
+      run: cmake -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DENET_STATIC=${{env.ENET_STATIC}} -DENET_SHARED=${{env.ENET_SHARED}} -DENET_TEST=${{env.ENET_TEST}}
+
+    - name: Build
+      # Build your program with the given configuration
+      run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}}

.github/workflows/linux.yml

@@ -0,0 +1,34 @@
+name: Linux
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+env:
+  # Customize the CMake build type here (Release, Debug, RelWithDebInfo, etc.)
+  BUILD_TYPE: Release
+  ENET_STATIC: 1
+  ENET_TEST: 1
+  ENET_SHARED: 0
+
+jobs:
+  cmake-x64:
+    # The CMake configure and build commands are platform agnostic and should work equally
+    # well on Windows or Mac.  You can convert this to a matrix build if you need
+    # cross-platform coverage.
+    # See: https://docs.github.com/en/free-pro-team@latest/actions/learn-github-actions/managing-complex-workflows#using-a-build-matrix
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Configure CMake
+      # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.
+      # See https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html?highlight=cmake_build_type
+      run: cmake -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DENET_STATIC=${{env.ENET_STATIC}} -DENET_SHARED=${{env.ENET_SHARED}} -DENET_TEST=${{env.ENET_TEST}}
+
+    - name: Build
+      # Build your program with the given configuration
+      run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}}

.github/workflows/windows.yml

@@ -0,0 +1,34 @@
+name: windows
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+env:
+  # Customize the CMake build type here (Release, Debug, RelWithDebInfo, etc.)
+  BUILD_TYPE: Release
+  ENET_STATIC: 1
+  ENET_TEST: 1
+  ENET_SHARED: 0
+
+jobs:
+  cmake-x64:
+    # The CMake configure and build commands are platform agnostic and should work equally
+    # well on Windows or Mac.  You can convert this to a matrix build if you need
+    # cross-platform coverage.
+    # See: https://docs.github.com/en/free-pro-team@latest/actions/learn-github-actions/managing-complex-workflows#using-a-build-matrix
+    runs-on: windows-latest
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Configure CMake
+      # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.
+      # See https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html?highlight=cmake_build_type
+      run: cmake -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DENET_STATIC=${{env.ENET_STATIC}} -DENET_SHARED=${{env.ENET_SHARED}} -DENET_TEST=${{env.ENET_TEST}}
+
+    - name: Build
+      # Build your program with the given configuration
+      run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}}

.travis.yml

@@ -7,7 +7,7 @@ compiler:
   - clang
 
 script:
-  - cmake . -DCMAKE_BUILD_TYPE=Release -DENET_TEST=1 -DENET_SHARED=1
+  - cmake . -DCMAKE_BUILD_TYPE=Release -DENET_TEST=1 -DENET_SHARED=1 -DENET_STATIC=0
   - cmake --build .
   - ./enet_test
 

CMakeLists.txt

@@ -2,9 +2,9 @@ cmake_minimum_required(VERSION 3.0)
 project(enet C)
 
 # defaults
-set(ENET_STATIC ON)
-set(ENET_SHARED OFF)
-set(ENET_TEST OFF)
+option(ENET_STATIC ON)
+option(ENET_SHARED OFF)
+option(ENET_TEST OFF)
 
 # configure projects
 if (ENET_STATIC)
@@ -25,19 +25,13 @@ if (ENET_SHARED)
 endif()
 
 if (ENET_TEST)
-    add_executable(enet_test test/build.c)
-    target_include_directories(enet_test PRIVATE ${PROJECT_SOURCE_DIR}/include)
-
-    if (WIN32)
-        target_link_libraries(enet_test PUBLIC winmm ws2_32)
-    endif()
+    add_subdirectory(test)
 endif()
 
-
 if(MSVC)
     target_compile_options(enet PRIVATE -W3)
 else()
     target_compile_options(enet PRIVATE -Wno-error)
 endif()
 
-target_include_directories(enet PUBLIC ${PROJECT_SOURCE_DIR}/include)
+target_include_directories(enet PUBLIC ${PROJECT_SOURCE_DIR}/include)

README.md

@@ -65,6 +65,23 @@ $ npm install enet.c --save
 
 Add include path to the library `node_modules/enet.c/include` to your makefile/
 
+## Installation (via CMake >3.11)
+
+Install library by
+
+```cmake
+include(FetchContent)
+
+FetchContent_Declare(
+    enet
+    GIT_REPOSITORY https://github.com/zpl-c/enet.git
+    GIT_TAG YOUR_BRANCH_OR_TAG_OF_CHOICE
+)
+FetchContent_MakeAvailable(enet)
+```
+
+and link against the `enet` library in projects that necessitate it.
+
 ## Installation (manually)
 
 Download file [include/enet.h](https://raw.githubusercontent.com/zpl-c/enet/master/include/enet.h) and just add to your project.

test/CMakeLists.txt

@@ -0,0 +1,13 @@
+cmake_minimum_required(VERSION 3.0)
+project(enet_test C)
+
+add_executable(enet_test build.c)
+
+target_link_libraries(enet_test PRIVATE enet)
+target_include_directories(enet_test PRIVATE enet)
+
+if(MSVC)
+    target_compile_options(enet_test PRIVATE -W3)
+else()
+    target_compile_options(enet_test PRIVATE -Wno-error)
+endif()