title: Android NDK, CMake with other libraries
body: <p>So I am trying to build and test out a CMake with the Android NDK on Android Studio. I can get my library to compile, but it doesn't seem to want to pull any third-party dependencies over. I've been reading through the toolchain and looking for better documentations, with no luck. Can someone tell me if I am missing?</p>
  
  <pre><code>cmake_minimum_required(VERSION 3.4.1)
  
  set(SFML_PATH ${ANDROID_NDK}/sources/sfml)
  set(SFML_LIB_PATH ${SFML_PATH}/lib/${ANDROID_NDK_ABI_NAME})
  
  set(SFML_LIB_SYSTEM ${SFML_LIB_PATH}/libsfml-system.so)
  set(SFML_LIB_AUDIO ${SFML_LIB_PATH}/libsfml-audio.so)
  set(SFML_LIB_GRAPHICS ${SFML_LIB_PATH}/libsfml-graphics.so)
  set(SFML_LIB_NETWORK ${SFML_LIB_PATH}/libsfml-network.so)
  set(SFML_LIB_WINDOW ${SFML_LIB_PATH}/libsfml-window.so)
  set(SFML_LIB_ACTIVITY ${SFML_LIB_PATH}/libsfml-activity.so)
  set(SFML_LIB_MAIN ${SFML_LIB_PATH}/libsfml-main.a)
  
  
  set(SFML_LIBS ${SFML_LIB_SYSTEM} ${SFML_LIB_GRAPHICS} ${SFML_LIB_AUDIO} ${SFML_LIB_WINDOW} ${SFML_LIB_ACTIVITY})
  
  include_directories(${SFML_PATH}/include)
  link_directories(${SFML_LIB_PATH})
  
  add_library(native-lib SHARED
      src/main/cpp/native-lib.cpp)
  
  target_link_libraries(native-lib log ${SFML_LIBS})
  
  #file(COPY ${SFML_LIBS} DESTINATION ${__android_install_path})
  FOREACH(SFML_LIB ${SFML_LIB})
      execute_process( COMMAND "${CMAKE_COMMAND}" -E copy_if_different "${SFML_LIB}" "${LIBRARY_OUTPUT_PATH}/${SFML_LIB}" RESULT_VARIABLE __fileCopyProcess )
      MESSAGE("Lib: ${SFML_LIB}")
  ENDFOREACH(SFML_LIB)
  </code></pre>
  
  <p>Above is my CMakeLists.txt. I have done a little hacking to get it to compile with SFML with the paths, as I have not found good documentation with CMake and Android yet.</p>