安装webkit时出错，但所需的一切都是当前日期？

Question

我试图安装Webkit，以便我可以使用它附带的一些功能，但我一直遇到这个错误。

./build-webkit --debug --gtk

    Not searching for unused variables given on the command line.
    -- Could NOT find Ruby (missing:  RUBY_INCLUDE_DIR RUBY_CONFIG_INCLUDE_DIR) (found suitable version "2.3.0", minimum required is "1.8.7")
    CMake Error at Source/cmake/FindCairo.cmake:65 (message):
      Required version (1.10.2) is higher than found version ()
    Call Stack (most recent call first):
      Source/cmake/OptionsGTK.cmake:29 (find_package)
      CMakeLists.txt:151 (include)


    -- Configuring incomplete, errors occurred!
    See also "/home/naomi/Desktop/Webkit/WebKitBuild/Debug/CMakeFiles/CMakeOutput.log".

任何人都知道我做错了什么？ （我确实确保Cmake，Ruby等都是最新的）