# Manual install (/en/realtime-media/rtm/reference/downloads/linux-cpp)

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To manually install the Signaling SDK for Linux C++:

1. Extract the files in Agora [Signaling SDK](/en/api-reference/sdks?product=signaling\&platform=linux-cpp) to a local folder.

2. Copy the `*.so` file in the SDK folder into your `lib` folder, and copy the `*.h` file in the SDK folder into your `include` folder.

3. Create a file named `CMakeLists.txt` under the `RTM_quickstart` directory to use CMake to build the project. The text file should contain the following content:

   ```text
   cmake_minimum_required(VERSION 2.8)
   project(rtmQuickstart)

   set(TARGET_NAME rtmQuickstart)
   set(SOURCES rtmQuickstart.cpp)
   set(HEADERS)

   set(TARGET_BUILD_TYPE "Debug")
   set(CMAKE_CXX_FLAGS "-fPIC -O2 -g -std=c++11 -msse2")

   include_directories(${CMAKE_SOURCE_DIR}/include)
   link_directories(${CMAKE_SOURCE_DIR}/lib)

   add_executable(${TARGET_NAME} ${SOURCES} ${HEADERS})
   target_link_libraries(${TARGET_NAME} agora_rtm_sdk pthread)
   ```