diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 0000000..3a966b1
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,37 @@
+
+cmake_minimum_required(VERSION 3.1)
+project(moonlight-common-c LANGUAGES C)
+
+SET(CMAKE_C_STANDARD 11)
+
+find_package(OpenSSL 1.0.2 REQUIRED)
+
+aux_source_directory(src SRC_LIST)
+aux_source_directory(enet SRC_LIST)
+aux_source_directory(reedsolomon SRC_LIST)
+
+if(MSVC)
+  add_compile_options(/W4 /wd4100 /wd4232)
+  add_definitions(-D_CRT_SECURE_NO_WARNINGS=1 -D_CRT_NONSTDC_NO_DEPRECATE=1)
+  link_libraries(ws2_32.lib qwave.lib winmm.lib)
+else()
+  add_compile_options(-Wall -Wextra -Wno-unused-parameter)
+endif()
+
+string(TOUPPER "x${CMAKE_BUILD_TYPE}" BUILD_TYPE)
+if("${BUILD_TYPE}" STREQUAL "XDEBUG")
+	add_definitions(-DLC_DEBUG)
+else()
+	add_definitions(-DNDEBUG)
+endif()
+
+add_definitions(-DHAS_SOCKLEN_T)
+
+include_directories(
+  ${CMAKE_CURRENT_SOURCE_DIR}/enet/include
+  ${CMAKE_CURRENT_SOURCE_DIR}/reedsolomon
+  ${OPENSSL_INCLUDE_DIR})
+
+link_libraries(${OPENSSL_CRYPTO_LIBRARY})
+
+add_library(moonlight-common-c SHARED ${SRC_LIST})
diff --git a/appveyor.yml b/appveyor.yml
new file mode 100644
index 0000000..18f5ea6
--- /dev/null
+++ b/appveyor.yml
@@ -0,0 +1,37 @@
+clone_depth: 1
+
+environment:
+  matrix:
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+      CMAKE_ARGS: -DCMAKE_SYSTEM_VERSION=10.0.18362.0 -A Win32
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+      CMAKE_ARGS: -DCMAKE_SYSTEM_VERSION=10.0.18362.0 -A x64
+    - APPVEYOR_BUILD_WORKER_IMAGE: macOS
+      BUILD_TARGET: macos
+      CMAKE_ARGS: -DOPENSSL_ROOT_DIR=/usr/local/opt/openssl
+    - APPVEYOR_BUILD_WORKER_IMAGE: Ubuntu
+      CC: clang
+      CXX: clang++
+    - APPVEYOR_BUILD_WORKER_IMAGE: Ubuntu
+      CC: gcc
+      CXX: g++
+
+before_build:
+  - 'git submodule update --init --recursive'
+
+build_script:
+  - 'mkdir build_debug'
+  - 'cd build_debug'
+  - sh: 'cmake $CMAKE_ARGS -DCMAKE_BUILD_TYPE=Debug ..'
+  - cmd: 'cmake %CMAKE_ARGS% -DCMAKE_BUILD_TYPE=Debug ..'
+  - sh: 'cmake --build .'
+  - cmd: 'cmake --build . --config Debug'
+  - 'cd ..'
+  - 'mkdir build_release'
+  - 'cd build_release'
+  - sh: 'cmake $CMAKE_ARGS -DCMAKE_BUILD_TYPE=Release ..'
+  - cmd: 'cmake %CMAKE_ARGS% -DCMAKE_BUILD_TYPE=Release ..'
+  - sh: 'cmake --build .'
+  - cmd: 'cmake --build . --config Release'
+
+deploy: off