diff --git a/.github/workflows/cmake.yml b/.github/workflows/cmake.yml
new file mode 100644
index 0000000..2d0b88f
--- /dev/null
+++ b/.github/workflows/cmake.yml
@@ -0,0 +1,66 @@
+name: CMake
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macOS-latest]
+        type: [Debug, RelWithDebInfo, MinSizeRel, Release]
+        compiler: [default, clang, gcc]
+        exclude:
+          - {os: "windows-latest", compiler: "clang"}
+          - {os: "macOS-latest", compiler: "clang"}
+          - {os: "windows-latest", compiler: "gcc"}
+          - {os: "macOS-latest", compiler: "gcc"}
+          - {os: "ubuntu-latest", compiler: "default"}
+          - {os: "ubuntu-latest", compiler: "default"}
+    runs-on: ${{ matrix.os }}
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Create Build Environment
+      run: cmake -E make_directory ${{github.workspace}}/build
+
+    - name: Setup dependencies
+      if: startsWith(matrix.os, 'ubuntu')
+      run: sudo apt-get install -y gcc-10 g++-10 clang-10
+
+    - name: Configure CMake
+      shell: bash
+      if: matrix.compiler == 'default'
+      working-directory: ${{github.workspace}}/build
+      run: cmake $GITHUB_WORKSPACE/test -DCMAKE_BUILD_TYPE=${{ matrix.type }}
+
+    - name: Configure CMake with GCC
+      shell: bash
+      if: matrix.compiler == 'gcc'
+      working-directory: ${{github.workspace}}/build
+      run: cmake $GITHUB_WORKSPACE/test -DCMAKE_BUILD_TYPE=${{ matrix.type }} -DCMAKE_C_COMPILER=gcc-10 -DCMAKE_CXX_COMPILER=g++-10
+
+    - name: Configure CMake with Clang
+      shell: bash
+      if: matrix.compiler == 'clang'
+      working-directory: ${{github.workspace}}/build
+      run: cmake $GITHUB_WORKSPACE/test -DCMAKE_BUILD_TYPE=${{ matrix.type }} -DCMAKE_C_COMPILER=clang-10 -DCMAKE_CXX_COMPILER=clang++-10
+
+    - name: Build
+      working-directory: ${{github.workspace}}/build
+      shell: bash
+      run: cmake --build . --config ${{ matrix.type }}
+
+    - name: Test
+      working-directory: ${{github.workspace}}/build
+      shell: bash
+      run: if [ "${{ matrix.os }}" == "windows-latest" ]; then cd ${{ matrix.type }}; fi; ./utest_test 
+
+    - name: Test Whole Program Optimization
+      working-directory: ${{github.workspace}}/build
+      shell: bash
+      run: if [ "${{ matrix.os }}" == "windows-latest" ]; then cd ${{ matrix.type }}; fi; ./utest_test_wpo 

diff --git a/.github/workflows/cmake.yml b/.github/workflows/cmake.yml
new file mode 100644
index 0000000..2d0b88f
--- /dev/null
+++ b/.github/workflows/cmake.yml
@@ -0,0 +1,66 @@
+name: CMake
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macOS-latest]
+        type: [Debug, RelWithDebInfo, MinSizeRel, Release]
+        compiler: [default, clang, gcc]
+        exclude:
+          - {os: "windows-latest", compiler: "clang"}
+          - {os: "macOS-latest", compiler: "clang"}
+          - {os: "windows-latest", compiler: "gcc"}
+          - {os: "macOS-latest", compiler: "gcc"}
+          - {os: "ubuntu-latest", compiler: "default"}
+          - {os: "ubuntu-latest", compiler: "default"}
+    runs-on: ${{ matrix.os }}
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Create Build Environment
+      run: cmake -E make_directory ${{github.workspace}}/build
+
+    - name: Setup dependencies
+      if: startsWith(matrix.os, 'ubuntu')
+      run: sudo apt-get install -y gcc-10 g++-10 clang-10
+
+    - name: Configure CMake
+      shell: bash
+      if: matrix.compiler == 'default'
+      working-directory: ${{github.workspace}}/build
+      run: cmake $GITHUB_WORKSPACE/test -DCMAKE_BUILD_TYPE=${{ matrix.type }}
+
+    - name: Configure CMake with GCC
+      shell: bash
+      if: matrix.compiler == 'gcc'
+      working-directory: ${{github.workspace}}/build
+      run: cmake $GITHUB_WORKSPACE/test -DCMAKE_BUILD_TYPE=${{ matrix.type }} -DCMAKE_C_COMPILER=gcc-10 -DCMAKE_CXX_COMPILER=g++-10
+
+    - name: Configure CMake with Clang
+      shell: bash
+      if: matrix.compiler == 'clang'
+      working-directory: ${{github.workspace}}/build
+      run: cmake $GITHUB_WORKSPACE/test -DCMAKE_BUILD_TYPE=${{ matrix.type }} -DCMAKE_C_COMPILER=clang-10 -DCMAKE_CXX_COMPILER=clang++-10
+
+    - name: Build
+      working-directory: ${{github.workspace}}/build
+      shell: bash
+      run: cmake --build . --config ${{ matrix.type }}
+
+    - name: Test
+      working-directory: ${{github.workspace}}/build
+      shell: bash
+      run: if [ "${{ matrix.os }}" == "windows-latest" ]; then cd ${{ matrix.type }}; fi; ./utest_test 
+
+    - name: Test Whole Program Optimization
+      working-directory: ${{github.workspace}}/build
+      shell: bash
+      run: if [ "${{ matrix.os }}" == "windows-latest" ]; then cd ${{ matrix.type }}; fi; ./utest_test_wpo 
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..3fb8499
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+*.DS_Store
+build

diff --git a/.github/workflows/cmake.yml b/.github/workflows/cmake.yml
new file mode 100644
index 0000000..2d0b88f
--- /dev/null
+++ b/.github/workflows/cmake.yml
@@ -0,0 +1,66 @@
+name: CMake
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macOS-latest]
+        type: [Debug, RelWithDebInfo, MinSizeRel, Release]
+        compiler: [default, clang, gcc]
+        exclude:
+          - {os: "windows-latest", compiler: "clang"}
+          - {os: "macOS-latest", compiler: "clang"}
+          - {os: "windows-latest", compiler: "gcc"}
+          - {os: "macOS-latest", compiler: "gcc"}
+          - {os: "ubuntu-latest", compiler: "default"}
+          - {os: "ubuntu-latest", compiler: "default"}
+    runs-on: ${{ matrix.os }}
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Create Build Environment
+      run: cmake -E make_directory ${{github.workspace}}/build
+
+    - name: Setup dependencies
+      if: startsWith(matrix.os, 'ubuntu')
+      run: sudo apt-get install -y gcc-10 g++-10 clang-10
+
+    - name: Configure CMake
+      shell: bash
+      if: matrix.compiler == 'default'
+      working-directory: ${{github.workspace}}/build
+      run: cmake $GITHUB_WORKSPACE/test -DCMAKE_BUILD_TYPE=${{ matrix.type }}
+
+    - name: Configure CMake with GCC
+      shell: bash
+      if: matrix.compiler == 'gcc'
+      working-directory: ${{github.workspace}}/build
+      run: cmake $GITHUB_WORKSPACE/test -DCMAKE_BUILD_TYPE=${{ matrix.type }} -DCMAKE_C_COMPILER=gcc-10 -DCMAKE_CXX_COMPILER=g++-10
+
+    - name: Configure CMake with Clang
+      shell: bash
+      if: matrix.compiler == 'clang'
+      working-directory: ${{github.workspace}}/build
+      run: cmake $GITHUB_WORKSPACE/test -DCMAKE_BUILD_TYPE=${{ matrix.type }} -DCMAKE_C_COMPILER=clang-10 -DCMAKE_CXX_COMPILER=clang++-10
+
+    - name: Build
+      working-directory: ${{github.workspace}}/build
+      shell: bash
+      run: cmake --build . --config ${{ matrix.type }}
+
+    - name: Test
+      working-directory: ${{github.workspace}}/build
+      shell: bash
+      run: if [ "${{ matrix.os }}" == "windows-latest" ]; then cd ${{ matrix.type }}; fi; ./utest_test 
+
+    - name: Test Whole Program Optimization
+      working-directory: ${{github.workspace}}/build
+      shell: bash
+      run: if [ "${{ matrix.os }}" == "windows-latest" ]; then cd ${{ matrix.type }}; fi; ./utest_test_wpo 
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..3fb8499
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+*.DS_Store
+build
diff --git a/README.md b/README.md
index b67fffa..6186b5b 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,6 @@
 # 🧪 utest.h
 
+[![Actions Status](https://github.com/sheredom/utest.h/workflows/CMake/badge.svg)](https://github.com/sheredom/utest.h/actions)
 [![Build status](https://ci.appveyor.com/api/projects/status/i2u3a0pw4pxprrcv?svg=true)](https://ci.appveyor.com/project/sheredom/utest-h)
 [![Build Status](https://travis-ci.org/sheredom/utest.h.svg)](https://travis-ci.org/sheredom/utest.h)
 

diff --git a/.github/workflows/cmake.yml b/.github/workflows/cmake.yml
new file mode 100644
index 0000000..2d0b88f
--- /dev/null
+++ b/.github/workflows/cmake.yml
@@ -0,0 +1,66 @@
+name: CMake
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macOS-latest]
+        type: [Debug, RelWithDebInfo, MinSizeRel, Release]
+        compiler: [default, clang, gcc]
+        exclude:
+          - {os: "windows-latest", compiler: "clang"}
+          - {os: "macOS-latest", compiler: "clang"}
+          - {os: "windows-latest", compiler: "gcc"}
+          - {os: "macOS-latest", compiler: "gcc"}
+          - {os: "ubuntu-latest", compiler: "default"}
+          - {os: "ubuntu-latest", compiler: "default"}
+    runs-on: ${{ matrix.os }}
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Create Build Environment
+      run: cmake -E make_directory ${{github.workspace}}/build
+
+    - name: Setup dependencies
+      if: startsWith(matrix.os, 'ubuntu')
+      run: sudo apt-get install -y gcc-10 g++-10 clang-10
+
+    - name: Configure CMake
+      shell: bash
+      if: matrix.compiler == 'default'
+      working-directory: ${{github.workspace}}/build
+      run: cmake $GITHUB_WORKSPACE/test -DCMAKE_BUILD_TYPE=${{ matrix.type }}
+
+    - name: Configure CMake with GCC
+      shell: bash
+      if: matrix.compiler == 'gcc'
+      working-directory: ${{github.workspace}}/build
+      run: cmake $GITHUB_WORKSPACE/test -DCMAKE_BUILD_TYPE=${{ matrix.type }} -DCMAKE_C_COMPILER=gcc-10 -DCMAKE_CXX_COMPILER=g++-10
+
+    - name: Configure CMake with Clang
+      shell: bash
+      if: matrix.compiler == 'clang'
+      working-directory: ${{github.workspace}}/build
+      run: cmake $GITHUB_WORKSPACE/test -DCMAKE_BUILD_TYPE=${{ matrix.type }} -DCMAKE_C_COMPILER=clang-10 -DCMAKE_CXX_COMPILER=clang++-10
+
+    - name: Build
+      working-directory: ${{github.workspace}}/build
+      shell: bash
+      run: cmake --build . --config ${{ matrix.type }}
+
+    - name: Test
+      working-directory: ${{github.workspace}}/build
+      shell: bash
+      run: if [ "${{ matrix.os }}" == "windows-latest" ]; then cd ${{ matrix.type }}; fi; ./utest_test 
+
+    - name: Test Whole Program Optimization
+      working-directory: ${{github.workspace}}/build
+      shell: bash
+      run: if [ "${{ matrix.os }}" == "windows-latest" ]; then cd ${{ matrix.type }}; fi; ./utest_test_wpo 
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..3fb8499
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+*.DS_Store
+build
diff --git a/README.md b/README.md
index b67fffa..6186b5b 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,6 @@
 # 🧪 utest.h
 
+[![Actions Status](https://github.com/sheredom/utest.h/workflows/CMake/badge.svg)](https://github.com/sheredom/utest.h/actions)
 [![Build status](https://ci.appveyor.com/api/projects/status/i2u3a0pw4pxprrcv?svg=true)](https://ci.appveyor.com/project/sheredom/utest-h)
 [![Build Status](https://travis-ci.org/sheredom/utest.h.svg)](https://travis-ci.org/sheredom/utest.h)
 
diff --git a/appveyor.yml b/appveyor.yml
index 269f39e..859bd06 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -13,8 +13,9 @@
     - VSVERSION: Visual Studio 14 2015
     - VSVERSION: Visual Studio 15 2017
       APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
-    - VSVERSION: Visual Studio 16 2019
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
+    # VS 2019 is tested in GitHub Actions instead.
+    # - VSVERSION: Visual Studio 16 2019
+    #  APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
 
 platform:
   - Win32