title: CMake not linking specifiied libraries
body: <p>I'm working on a project hosted here: <a href="https://github.com/gtorrent" rel="nofollow">https://github.com/gtorrent</a></p>
  
  <p>Right now, we're trying to implement better Windows support. The library itself (gtorrent-core) builds fine. However, whenever we link against it, there are many undefined references to various libtorrent functions (the library we're building off of). I am currently using MSYS2 and MinGW-w64-x86_64 to build the project itself as well as all required libraries.</p>
  
  <p>For the ncurses gui, our CMakeLists.txt files are as follows</p>
  
  <p>gtorrent-ncurses/CMakelists.txt:</p>
  
  <pre><code>###############
  CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
  
  PROJECT(gtorrent-ncurses)
  
  SET(gtorrent-ncurses_VERSION_MAJOR 0)
  SET(gtorrent-ncurses_VERSION_MINOR 0)
  SET(gtorrent-ncurses_VERSION_PATCH 1)
  ###############
  
  # Configure version into Version.hpp
  SET (VERSION ${gtorrent-ncurses_VERSION_MAJOR}.${gtorrent-ncurses_VERSION_MINOR}.${gtorrent-ncurses_VERSION_PATCH})
  CONFIGURE_FILE (src/utils/Version.hpp.in Version.hpp @ONLY)
  
  # Set compiler options
  SET (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -g -Wall")
  
  # Set Cmake to build runtime in cwd
  SET (CMAKE_RUNTIME_OUTPUT_DIRECTORY ${PROJECT_BINARY_DIR})
  
  # Find Boost
  SET (Boost_USE_STATIC_LIBS ON)
  SET (Boost_USE_MULTITHREADED ON)
  SET (Boost_USE_STATIC_RUNTIME OFF)
  FIND_PACKAGE(Boost COMPONENTS system REQUIRED)
  
  # Find libtorrent
  INCLUDE (FindPkgConfig)
  PKG_SEARCH_MODULE (LIBTORRENT REQUIRED libtorrent-rasterbar)
  
  # Find ncurses
  INCLUDE(CheckLibraryExists)
  PKG_SEARCH_MODULE (NCURSESPP REQUIRED ncurses++w)
  PKG_SEARCH_MODULE (NCURSES REQUIRED ncursesw)
  PKG_SEARCH_MODULE (NCURSESPANEL REQUIRED panelw)
  
  # To find version
  INCLUDE_DIRECTORIES(${PROJECT_BINARY_DIR})
  
  ADD_DEFINITIONS (
      ${LIBTORRENT_CFLAGS}
      )
  
  ADD_SUBDIRECTORY(gtorrent-core)
  ADD_SUBDIRECTORY(src)
  </code></pre>
  
  <p>gtorrent-ncurses/src/CMakeLists.txt</p>
  
  <pre><code>INCLUDE_DIRECTORIES (
    ${Boost_INCLUDE_DIRS}
    ${LIBTORRENT_INCLUDE_DIRS}
    ${NCURSESPP_INCLUDE_DIRS}
    ${NCURSES_INCLUDE_DIRS}
    ${CMAKE_SOURCE_DIR}/gtorrent-core/include
    )
  
  ADD_DEFINITIONS (
    ${LIBTORRENT_CFLAGS}
    )
  
  ADD_EXECUTABLE ( gtorrent-ncurses
    main.cpp
    Application.cpp
    MainWindow.cpp
    TorrentView.cpp
    StatusView.cpp
    AddTorrent.cpp
    )
  
  ADD_DEPENDENCIES (gtorrent-ncurses
    gtorrent
    )
  
  LINK_DIRECTORIES (
    ${Boost_LIBRARY_DIRS}
    ${LIBTORRENT_LIBRARY_DIRS}
    )
  
  TARGET_LINK_LIBRARIES ( gtorrent-ncurses
    ${CMAKE_BINARY_DIR}/gtorrent-core/src/libgtorrent.a
    ${Boost_LIBRARIES}
    ${LIBTORRENT_LIBRARIES}
    ${NCURSESPP_LIBRARIES}
    ${NCURSES_LIBRARIES}
    ${NCURSESPANEL_LIBRARIES}
    )
  
  INSTALL (TARGETS gtorrent-ncurses RUNTIME DESTINATION ${PREFIX}/bin/ PERMISSIONS OWNER_EXECUTE OWNER_WRITE OWNER_READ GROUP_READ GROUP_EXECUTE WORLD_READ WORLD_EXECUTE)
  </code></pre>
  
  <p>And here are the compiler errors (too big to post): <a href="http://pastebin.com/v3fPXXAE" rel="nofollow">http://pastebin.com/v3fPXXAE</a></p>
  
  <p>Any ideas what is wrong?</p>