diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
new file mode 100644
index 00000000..309dcb75
--- /dev/null
+++ b/.github/workflows/build.yml
@@ -0,0 +1,105 @@
+name: build
+
+on: push
+
+jobs:
+  build:
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      matrix:
+        os: [ubuntu-18.04, macos-10.15]
+        compiler: [gcc, clang]
+        buildtool: [autotools, cmake]
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Linux setup
+      if: runner.os == 'Linux'
+      run: |
+        sudo apt-get install \
+          g++-8 \
+          clang-10 \
+          autoconf \
+          automake \
+          autotools-dev \
+          libtool \
+          pkg-config \
+          zlib1g-dev \
+          libcunit1-dev \
+          libssl-dev \
+          libxml2-dev \
+          libev-dev \
+          libevent-dev \
+          libjansson-dev \
+          libjemalloc-dev \
+          libc-ares-dev \
+          cmake \
+          cmake-data
+        echo 'CPPFLAGS=-fsanitize=address' >> $GITHUB_ENV
+        echo 'LDFLAGS=-fsanitize=address' >> $GITHUB_ENV
+    - name: MacOS setup
+      if: runner.os == 'macOS'
+      run: |
+        brew install \
+          libev \
+          libevent \
+          c-ares \
+          cunit \
+          libressl \
+          autoconf \
+          automake \
+          pkg-config \
+          libtool
+        echo 'PKG_CONFIG_PATH=/usr/local/opt/libressl/lib/pkgconfig:/usr/local/opt/libxml2/lib/pkgconfig' >> $GITHUB_ENV
+        # This fixes infamous 'stdio.h not found' error.
+        echo 'SDKROOT='"$(xcrun --sdk macosx --show-sdk-path)" >> $GITHUB_ENV
+    - name: Setup clang (Linux)
+      if: runner.os == 'Linux' && matrix.compiler == 'clang'
+      run: |
+        echo 'CC=clang-10' >> $GITHUB_ENV
+        echo 'CXX=clang++-10' >> $GITHUB_ENV
+    - name: Setup clang (MacOS)
+      if: runner.os == 'macOS' && matrix.compiler == 'clang'
+      run: |
+        echo 'CC=clang' >> $GITHUB_ENV
+        echo 'CXX=clang++' >> $GITHUB_ENV
+    - name: Setup gcc (Linux)
+      if: runner.os == 'Linux' && matrix.compiler == 'gcc'
+      run: |
+        echo 'CC=gcc-8' >> $GITHUB_ENV
+        echo 'CXX=g++-8' >> $GITHUB_ENV
+    - name: Setup gcc (MacOS)
+      if: runner.os == 'macOS' && matrix.compiler == 'gcc'
+      run: |
+        echo 'CC=gcc' >> $GITHUB_ENV
+        echo 'CXX=g++' >> $GITHUB_ENV
+    - name: Setup git submodules
+      run: |
+        git submodule update --init
+    - name: Configure autotools
+      if: matrix.buildtool == 'autotools'
+      run: |
+        autoreconf -i
+        ./configure --enable-werror --with-mruby
+    - name: Configure cmake
+      if: matrix.buildtool == 'cmake'
+      run: |
+        cmake -DENABLE_WERROR=1 -DWITH_MRUBY=1 -DWITH_NEVERBLEED=1 -DCPPFLAGS="$CPPFLAGS" -DLDFLAGS="$LDFLAGS" .
+    - name: Build nghttp2 with autotools
+      if: matrix.buildtool == 'autotools'
+      run: |
+        make distcheck \
+          DISTCHECK_CONFIGURE_FLAGS="--with-mruby --with-neverbleed --enable-werror CPPFLAGS=\"$CPPFLAGS\" LDFLAGS=\"$LDFLAGS\" PKG_CONFIG_PATH=$PKG_CONFIG_PATH"
+    - name: Build nghttp2 with cmake
+      if: matrix.buildtool == 'cmake'
+      run: |
+        make
+        make check
+    - name: Integration test
+      # Integration tests for nghttpx; autotools erases build
+      # artifacts.
+      if: matrix.buildtool == 'cmake'
+      run: |
+        cd integration-tests
+        make itprep it
diff --git a/integration-tests/setenv.in b/integration-tests/setenv.in
index c0f6b481..7177200e 100644
--- a/integration-tests/setenv.in
+++ b/integration-tests/setenv.in
@@ -5,8 +5,9 @@ if [ -d "$libdir/.libs" ]; then
     libdir="$libdir/.libs"
 fi
 
-export CGO_CFLAGS="-I@abs_top_srcdir@/lib/includes -I@abs_top_builddir@/lib/includes"
-export CGO_LDFLAGS="-L$libdir"
+export CGO_CFLAGS="-I@abs_top_srcdir@/lib/includes -I@abs_top_builddir@/lib/includes @CFLAGS@"
+export CGO_CPPFLAGS="@CPPFLAGS@"
+export CGO_LDFLAGS="-L$libdir @LDFLAGS@"
 export LD_LIBRARY_PATH="$libdir"
 export GODEBUG=cgocheck=0
 "$@"