diff --git a/.ci/README.md b/.ci/README.md
new file mode 100644
index 0000000..9932697
--- /dev/null
+++ b/.ci/README.md
@@ -0,0 +1,5 @@
+# libcubescript CI scripts
+
+These CI scripts are meant to provide a helper environment for continuous
+integration. They are written to be used only in the CI environment, not
+general purpose environments.
diff --git a/.ci/build-cs b/.ci/build-cs
new file mode 100755
index 0000000..00aa20b
--- /dev/null
+++ b/.ci/build-cs
@@ -0,0 +1,161 @@
+#!/bin/sh
+
+expected_triplet=$TARGET
+
+if [ -z "$expected_triplet" ]; then
+    echo "ERROR: target triplet not provided!"
+    exit 1
+fi
+
+current_triplet=`$CC -dumpmachine`
+
+if [ "$CC" = "clang" ]; then
+    export CXX="clang++"
+else
+    export CXX="g++"
+fi
+
+if [ "$TARGET" != "darwin" -a "$CC" != "clang" -a "$expected_triplet" != "$current_triplet" ]; then
+    cross=yes
+    export CC="${expected_triplet}-${CC}"
+    export CXX="${expected_triplet}-${CXX}"
+    export STRIP="${expected_triplet}-strip"
+    export AR="${expected_triplet}-ar"
+    export AS="${expected_triplet}-as"
+else
+    export STRIP="strip"
+    export AR="ar"
+fi
+
+meson_system="linux"
+
+case "${expected_triplet}" in
+    darwin)
+        # special case here
+        meson_system="darwin"
+        ;;
+    x86_64*)
+        meson_cpu_family="x86_64"
+        meson_cpu="x86_64"
+        meson_endian="little"
+        case "${expected_triplet}" in
+            *w64*)
+                meson_system="windows"
+                ;;
+            *)
+                qemu_cpu="x86_64"
+                ;;
+        esac
+        ;;
+    i686*)
+        meson_cpu_family="x86"
+        meson_cpu="i686"
+        meson_endian="little"
+        qemu_cpu="i386"
+        ;;
+    powerpc64le*)
+        meson_cpu_family="ppc64"
+        meson_cpu="ppc64le"
+        meson_endian="little"
+        qemu_cpu="ppc64le"
+        ;;
+    powerpc64*)
+        meson_cpu_family="ppc64"
+        meson_cpu="ppc64"
+        meson_endian="big"
+        qemu_cpu="ppc64"
+        ;;
+    powerpcle*)
+        echo "ERROR: ppcle not supported in qemu"
+        exit 1
+        ;;
+    powerpc*)
+        meson_cpu_family="ppc"
+        meson_cpu="ppc"
+        meson_endian="big"
+        qemu_cpu="ppc"
+        ;;
+    aarch64-*)
+        meson_cpu_family="aarch64"
+        meson_cpu="aarch64"
+        meson_endian="little"
+        qemu_cpu="aarch64"
+        ;;
+    arm-*)
+        meson_cpu_family="arm"
+        meson_cpu="armv6l"
+        meson_endian="little"
+        qemu_cpu="arm"
+        ;;
+    riscv64-*)
+        meson_cpu_family="riscv64"
+        meson_cpu="riscv64"
+        meson_endian="little"
+        qemu_cpu="riscv64"
+        ;;
+    s390x*)
+        meson_cpu_family="s390x"
+        meson_cpu="s390x"
+        meson_endian="big"
+        qemu_cpu="s390x"
+        ;;
+    mips-*)
+        meson_cpu_family="mips"
+        meson_cpu="mips"
+        meson_endian="big"
+        qemu_cpu="mips"
+        ;;
+    m68k*)
+        meson_cpu_family="m68k"
+        meson_cpu="m68k"
+        meson_endian="big"
+        qemu_cpu="m68k"
+        ;;
+    *)
+        echo "ERROR: Cross CPU unspecified"
+        exit 1
+        ;;
+esac
+
+export PATH="$(pwd)/host_tools:$PATH"
+
+if [ -n "$qemu_cpu" -a -n "$cross" ]; then
+    echo ">> Preparing qemu..."
+    # work around glibc being dumb
+    # the cache format is not endian agnostic, so unless a dummy file exists
+    # here, qemu will try to use host's and it will crash guest glibc on BE
+    sudo mkdir -p /usr/${expected_triplet}/etc
+    sudo touch /usr/${expected_triplet}/etc/ld.so.cache
+fi
+
+echo ">> Building and testing cubescript..."
+
+mkdir -p build
+cd build
+
+args=""
+if [ -n "${cross}" ]; then
+    cat << EOF > crossfile
+[binaries]
+c = '${CC}'
+cpp = '${CXX}'
+strip = '${STRIP}'
+
+[host_machine]
+system = '${meson_system}'
+cpu_family = '${meson_cpu_family}'
+cpu = '${meson_cpu}'
+endian = '${meson_endian}'
+EOF
+    args="${args} --cross-file=crossfile"
+fi
+if [ -n "$BUILDTYPE" ]; then
+    args="${args} --buildtype=$BUILDTYPE"
+fi
+
+meson .. ${args} || exit 1
+ninja all || exit 1
+ninja test || exit 1
+cd ..
+
+exit 0
diff --git a/.ci/build-cs-windows b/.ci/build-cs-windows
new file mode 100755
index 0000000..1db7d49
--- /dev/null
+++ b/.ci/build-cs-windows
@@ -0,0 +1,23 @@
+#!/bin/bash
+
+unset CC CXX CC_FOR_BUILD CXX_FOR_BUILD
+
+export PATH="$(pwd)/host_tools:$PATH"
+
+echo ">> Building and testing cubescript..."
+
+args=""
+if [ -n "$BUILDTYPE" ]; then
+    args="${args} --buildtype=$BUILDTYPE"
+fi
+
+mkdir -p build
+cd build-
+
+cmd.exe //C 'C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Auxiliary\Build\vcvars64.bat' amd64 '&&' \
+meson .. ${args} '&&' \
+ninja all '&&' ninja test || exit 1
+
+cd ..
+
+exit 0
diff --git a/.ci/install-env b/.ci/install-env
new file mode 100755
index 0000000..df3547a
--- /dev/null
+++ b/.ci/install-env
@@ -0,0 +1,88 @@
+#!/bin/sh
+
+expected_triplet=$TARGET
+
+if [ -z "$expected_triplet" ]; then
+    echo "ERROR: target triplet not provided!"
+    exit 1
+fi
+
+ensure_tool() {
+    command -v "$1" > /dev/null
+    if [ $? -ne 0 ]; then
+        echo "ERROR: Missing tool: $1"
+        exit 1
+    fi
+}
+
+if [ "$(uname -s)" = "Linux" ]; then
+    is_linux=yes
+fi
+
+echo ">> Checking tools..."
+
+ensure_tool gcc
+ensure_tool g++
+ensure_tool clang
+ensure_tool clang++
+
+mkdir -p host_tools
+
+echo ">> Updating package database..."
+
+[ -n "$is_linux" ] && sudo apt-get update
+
+echo ">> Installing meson..."
+
+if [ -n "$is_linux" ]; then
+    sudo apt-get install ninja-build
+else
+    ninja_version=1.10.2
+    cd host_tools
+    wget "https://github.com/ninja-build/ninja/releases/download/v${ninja_version}/ninja-mac.zip" || exit 1
+    tar xf ninja-mac.zip || exit 1
+    rm ninja-mac.zip
+    cd ..
+    export PATH="$(pwd)/host_tools:$PATH"
+fi
+
+if [ -n "$(command -v pip3)" ]; then
+    sudo pip3 install meson || exit 1
+elif [ -n "$(command -v pip)" ]; then
+    sudo pip install meson || exit 1
+else
+    echo "ERROR: pip not found"
+    exit 1
+fi
+
+ensure_tool meson
+ensure_tool ninja
+
+if [ "$(uname -s)" != "Linux" ]; then
+    exit 0
+fi
+
+current_triplet=`gcc -dumpmachine`
+
+if [ -z "$current_triplet" ]; then
+    echo "ERROR: Native compiler not present!"
+    exit 1
+fi
+
+if [ "$expected_triplet" = "$current_triplet" ]; then
+    exit 0
+fi
+
+echo ">> Installing toolchain..."
+
+if [ "$expected_triplet" = "x86_64-w64-mingw32" ]; then
+    gcc_suffix="mingw-w64"
+    extra_packages="wine"
+else
+    gcc_suffix="${expected_triplet}"
+    extra_packages="qemu-user"
+fi
+
+sudo apt-get install gcc-${gcc_suffix} g++-${gcc_suffix} ${extra_packages} || exit 1
+
+exit $?
diff --git a/.ci/install-env-windows b/.ci/install-env-windows
new file mode 100755
index 0000000..9a397e6
--- /dev/null
+++ b/.ci/install-env-windows
@@ -0,0 +1,15 @@
+#!/bin/bash
+
+ninja_version=1.10.2
+
+echo ">> Installing meson..."
+
+mkdir -p host_tools
+
+curl -L -o ninja.zip https://github.com/ninja-build/ninja/releases/download/v${ninja_version}/ninja-win.zip || exit 1
+7z x ninja.zip || exit 1
+mv ninja.exe host_tools
+
+pip3 install meson
+
+exit 0
diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
new file mode 100644
index 0000000..fbf952c
--- /dev/null
+++ b/.github/workflows/build.yaml
@@ -0,0 +1,91 @@
+name: CI
+
+on: push
+
+jobs:
+  linux:
+    name: Linux
+    runs-on: ubuntu-20.04
+
+    env:
+      TARGET: '${{ matrix.config.target }}'
+      LUA_VERSIONS: '5.4.2 5.3.6 5.2.4 5.1.5'
+      CC: '${{ matrix.config.cc }}'
+      BUILDTYPE: '${{ matrix.config.buildtype }}'
+
+    strategy:
+      matrix:
+        config:
+          # x86_64: test gcc, clang, + release mode to catch assert bugs
+          - { target: x86_64-linux-gnu, cc: gcc, buildtype: debugoptimized }
+          - { target: x86_64-linux-gnu, cc: gcc, buildtype: release }
+          - { target: x86_64-linux-gnu, cc: clang, buildtype: debugoptimized }
+          # 32-bit x86
+          - { target: i686-linux-gnu, cc: gcc, buildtype: debugoptimized }
+          # all powerpc
+          - { target: powerpc64le-linux-gnu, cc: gcc, buildtype: debugoptimized }
+          - { target: powerpc64-linux-gnu, cc: gcc, buildtype: debugoptimized }
+          - { target: powerpc-linux-gnu, cc: gcc, buildtype: debugoptimized }
+          # aarch64 and arm
+          - { target: aarch64-linux-gnu, cc: gcc, buildtype: debugoptimized }
+          - { target: arm-linux-gnueabi, cc: gcc, buildtype: debugoptimized }
+          # riscv64 and s390x
+          - { target: riscv64-linux-gnu, cc: gcc, buildtype: debugoptimized }
+          - { target: s390x-linux-gnu, cc: gcc, buildtype: debugoptimized }
+          # mips, m68k
+          - { target: mips-linux-gnu, cc: gcc, buildtype: debugoptimized }
+          - { target: m68k-linux-gnu, cc: gcc, buildtype: debug }
+          # x86_64 windows cross, release mode
+          - { target: x86_64-w64-mingw32, cc: gcc, buildtype: release }
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          persist-credentials: false
+
+      - name: Prepare environment
+        run: sh ./.ci/install-env
+
+      - name: Build and test cubescript
+        run: sh ./.ci/build-cs
+
+  windows:
+    name: Windows
+    runs-on: windows-2019
+
+    env:
+      LUA_VERSIONS: '5.4.2 5.3.6 5.2.4 5.1.5'
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          persist-credentials: false
+
+      - name: Prepare environment
+        run: bash ./.ci/install-env-windows
+
+      - name: Build and test cubescript
+        run: bash ./.ci/build-cs-windows
+
+  mac:
+    name: MacOS
+    runs-on: macos-10.15
+
+    env:
+      TARGET: 'darwin'
+      LUA_VERSIONS: '5.4.2 5.3.6 5.2.4 5.1.5'
+      CC: 'clang'
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          persist-credentials: false
+
+      - name: Prepare environment
+        run: sh ./.ci/install-env
+
+      - name: Build and test cubescript
+        run: sh ./.ci/build-cs
diff --git a/README.md b/README.md
index a075d39..7210272 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,7 @@
 # libcubescript
 
+[![Build Status](https://github.com/octaforge/libcubescript/actions/workflows/build.yaml/badge.svg)](https://github.com/octaforge/libcubescript/actions)
+
 ![CubeScript REPL](https://ftp.octaforge.org/q66/random/libcs_repl.gif)
 
 ## Overview