findx11.cmake

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     SET(X11_Xinerama_FOUND TRUE)
     SET(X11_INCLUDE_DIR ${X11_INCLUDE_DIR} ${X11_Xinerama_INCLUDE_PATH})
  ENDIF (X11_Xinerama_INCLUDE_PATH  AND X11_Xinerama_LIB)

  IF (X11_Xfixes_INCLUDE_PATH AND X11_Xfixes_LIB)
     SET(X11_Xfixes_FOUND TRUE)
     SET(X11_INCLUDE_DIR ${X11_INCLUDE_DIR} ${X11_Xfixes_INCLUDE_PATH})
  ENDIF (X11_Xfixes_INCLUDE_PATH AND X11_Xfixes_LIB)

  IF (X11_Xrender_INCLUDE_PATH AND X11_Xrender_LIB)
     SET(X11_Xrender_FOUND TRUE)
     SET(X11_INCLUDE_DIR ${X11_INCLUDE_DIR} ${X11_Xrender_INCLUDE_PATH})
  ENDIF (X11_Xrender_INCLUDE_PATH AND X11_Xrender_LIB)

  IF (X11_Xrandr_INCLUDE_PATH AND X11_Xrandr_LIB)
     SET(X11_Xrandr_FOUND TRUE)
     SET(X11_INCLUDE_DIR ${X11_INCLUDE_DIR} ${X11_Xrandr_INCLUDE_PATH})
  ENDIF (X11_Xrandr_INCLUDE_PATH AND X11_Xrandr_LIB)

  IF (X11_xf86misc_INCLUDE_PATH AND X11_Xxf86misc_LIB)
     SET(X11_xf86misc_FOUND TRUE)
     SET(X11_INCLUDE_DIR ${X11_INCLUDE_DIR} ${X11_xf86misc_INCLUDE_PATH})
  ENDIF (X11_xf86misc_INCLUDE_PATH  AND X11_Xxf86misc_LIB)

  IF (X11_xf86vmode_INCLUDE_PATH)
     SET(X11_xf86vmode_FOUND TRUE)
     SET(X11_INCLUDE_DIR ${X11_INCLUDE_DIR} ${X11_xf86vmode_INCLUDE_PATH})
  ENDIF (X11_xf86vmode_INCLUDE_PATH)

  IF (X11_Xcursor_INCLUDE_PATH AND X11_Xcursor_LIB)
     SET(X11_Xcursor_FOUND TRUE)
     SET(X11_INCLUDE_DIR ${X11_INCLUDE_DIR} ${X11_Xcursor_INCLUDE_PATH})
  ENDIF (X11_Xcursor_INCLUDE_PATH AND X11_Xcursor_LIB)

  IF (X11_Xscreensaver_INCLUDE_PATH AND X11_Xscreensaver_LIB)
     SET(X11_Xscreensaver_FOUND TRUE)
     SET(X11_INCLUDE_DIR ${X11_INCLUDE_DIR} ${X11_Xscreensaver_INCLUDE_PATH})
  ENDIF (X11_Xscreensaver_INCLUDE_PATH AND X11_Xscreensaver_LIB)

  IF (X11_dpms_INCLUDE_PATH)
     SET(X11_dpms_FOUND TRUE)
     SET(X11_INCLUDE_DIR ${X11_INCLUDE_DIR} ${X11_dpms_INCLUDE_PATH})
  ENDIF (X11_dpms_INCLUDE_PATH)

  IF (X11_Xkb_INCLUDE_PATH AND X11_Xkblib_INCLUDE_PATH AND X11_Xlib_INCLUDE_PATH)
     SET(X11_Xkb_FOUND TRUE)
     SET(X11_INCLUDE_DIR ${X11_INCLUDE_DIR} ${X11_Xkb_INCLUDE_PATH} )
  ENDIF (X11_Xkb_INCLUDE_PATH AND X11_Xkblib_INCLUDE_PATH AND X11_Xlib_INCLUDE_PATH)

  IF (X11_Xinput_INCLUDE_PATH AND X11_Xinput_LIB)
     SET(X11_Xinput_FOUND TRUE)
     SET(X11_INCLUDE_DIR ${X11_INCLUDE_DIR} ${X11_Xinput_INCLUDE_PATH})
  ENDIF (X11_Xinput_INCLUDE_PATH AND X11_Xinput_LIB)

  IF(X11_ICE_LIB AND X11_ICE_INCLUDE_PATH)
     SET(X11_ICE_FOUND TRUE)
  ENDIF(X11_ICE_LIB AND X11_ICE_INCLUDE_PATH)

  # Deprecated variable for backwards compatibility with CMake 1.4
  IF (X11_X11_INCLUDE_PATH AND X11_LIBRARIES)
    SET(X11_FOUND 1)
  ENDIF (X11_X11_INCLUDE_PATH AND X11_LIBRARIES)

  IF(X11_FOUND)
    INCLUDE(CheckFunctionExists)
    INCLUDE(CheckLibraryExists)

    # Translated from an autoconf-generated configure script.
    # See libs.m4 in autoconf's m4 directory.
    IF($ENV{ISC} MATCHES "^yes$")
      SET(X11_X_EXTRA_LIBS -lnsl_s -linet)
    ELSE($ENV{ISC} MATCHES "^yes$")
      SET(X11_X_EXTRA_LIBS "")

      # See if XOpenDisplay in X11 works by itself.
      CHECK_LIBRARY_EXISTS("${X11_LIBRARIES}" "XOpenDisplay" "${X11_LIBRARY_DIR}" X11_LIB_X11_SOLO)
      IF(NOT X11_LIB_X11_SOLO)
        # Find library needed for dnet_ntoa.
        CHECK_LIBRARY_EXISTS("dnet" "dnet_ntoa" "" X11_LIB_DNET_HAS_DNET_NTOA) 
        IF (X11_LIB_DNET_HAS_DNET_NTOA)
          SET (X11_X_EXTRA_LIBS ${X11_X_EXTRA_LIBS} -ldnet)
        ELSE (X11_LIB_DNET_HAS_DNET_NTOA)
          CHECK_LIBRARY_EXISTS("dnet_stub" "dnet_ntoa" "" X11_LIB_DNET_STUB_HAS_DNET_NTOA) 
          IF (X11_LIB_DNET_STUB_HAS_DNET_NTOA)
            SET (X11_X_EXTRA_LIBS ${X11_X_EXTRA_LIBS} -ldnet_stub)
          ENDIF (X11_LIB_DNET_STUB_HAS_DNET_NTOA)
        ENDIF (X11_LIB_DNET_HAS_DNET_NTOA)
      ENDIF(NOT X11_LIB_X11_SOLO)

      # Find library needed for gethostbyname.
      CHECK_FUNCTION_EXISTS("gethostbyname" CMAKE_HAVE_GETHOSTBYNAME)
      IF(NOT CMAKE_HAVE_GETHOSTBYNAME)
        CHECK_LIBRARY_EXISTS("nsl" "gethostbyname" "" CMAKE_LIB_NSL_HAS_GETHOSTBYNAME) 
        IF (CMAKE_LIB_NSL_HAS_GETHOSTBYNAME)
          SET (X11_X_EXTRA_LIBS ${X11_X_EXTRA_LIBS} -lnsl)
        ELSE (CMAKE_LIB_NSL_HAS_GETHOSTBYNAME)
          CHECK_LIBRARY_EXISTS("bsd" "gethostbyname" "" CMAKE_LIB_BSD_HAS_GETHOSTBYNAME) 
          IF (CMAKE_LIB_BSD_HAS_GETHOSTBYNAME)
            SET (X11_X_EXTRA_LIBS ${X11_X_EXTRA_LIBS} -lbsd)
          ENDIF (CMAKE_LIB_BSD_HAS_GETHOSTBYNAME)
        ENDIF (CMAKE_LIB_NSL_HAS_GETHOSTBYNAME)
      ENDIF(NOT CMAKE_HAVE_GETHOSTBYNAME)

      # Find library needed for connect.
      CHECK_FUNCTION_EXISTS("connect" CMAKE_HAVE_CONNECT)
      IF(NOT CMAKE_HAVE_CONNECT)
        CHECK_LIBRARY_EXISTS("socket" "connect" "" CMAKE_LIB_SOCKET_HAS_CONNECT) 
        IF (CMAKE_LIB_SOCKET_HAS_CONNECT)
          SET (X11_X_EXTRA_LIBS -lsocket ${X11_X_EXTRA_LIBS})
        ENDIF (CMAKE_LIB_SOCKET_HAS_CONNECT)
      ENDIF(NOT CMAKE_HAVE_CONNECT)

      # Find library needed for remove.
      CHECK_FUNCTION_EXISTS("remove" CMAKE_HAVE_REMOVE)
      IF(NOT CMAKE_HAVE_REMOVE)
        CHECK_LIBRARY_EXISTS("posix" "remove" "" CMAKE_LIB_POSIX_HAS_REMOVE) 
        IF (CMAKE_LIB_POSIX_HAS_REMOVE)
          SET (X11_X_EXTRA_LIBS ${X11_X_EXTRA_LIBS} -lposix)
        ENDIF (CMAKE_LIB_POSIX_HAS_REMOVE)
      ENDIF(NOT CMAKE_HAVE_REMOVE)

      # Find library needed for shmat.
      CHECK_FUNCTION_EXISTS("shmat" CMAKE_HAVE_SHMAT)
      IF(NOT CMAKE_HAVE_SHMAT)
        CHECK_LIBRARY_EXISTS("ipc" "shmat" "" CMAKE_LIB_IPS_HAS_SHMAT) 
        IF (CMAKE_LIB_IPS_HAS_SHMAT)
          SET (X11_X_EXTRA_LIBS ${X11_X_EXTRA_LIBS} -lipc)
        ENDIF (CMAKE_LIB_IPS_HAS_SHMAT)
      ENDIF(NOT CMAKE_HAVE_SHMAT)
    ENDIF($ENV{ISC} MATCHES "^yes$")

    IF (X11_ICE_FOUND)
      CHECK_LIBRARY_EXISTS("ICE" "IceConnectionNumber" "${X11_LIBRARY_DIR}"
                            CMAKE_LIB_ICE_HAS_ICECONNECTIONNUMBER)
      IF(CMAKE_LIB_ICE_HAS_ICECONNECTIONNUMBER)
        SET (X11_X_PRE_LIBS ${X11_ICE_LIB})
        IF(X11_SM_LIB)
          SET (X11_X_PRE_LIBS ${X11_SM_LIB} ${X11_X_PRE_LIBS})
        ENDIF(X11_SM_LIB)
      ENDIF(CMAKE_LIB_ICE_HAS_ICECONNECTIONNUMBER)
    ENDIF (X11_ICE_FOUND)

    # Build the final list of libraries.
    SET(X11_LIBRARIES ${X11_X_PRE_LIBS} ${X11_LIBRARIES} ${X11_X_EXTRA_LIBS})

    INCLUDE(FindPackageMessage)
    FIND_PACKAGE_MESSAGE(X11 "Found X11: ${X11_X11_LIB}"
      "[${X11_X11_LIB}][${X11_INCLUDE_DIR}]")
  ELSE (X11_FOUND)
    IF (X11_FIND_REQUIRED)
      MESSAGE(FATAL_ERROR "Could not find X11")
    ENDIF (X11_FIND_REQUIRED)
  ENDIF (X11_FOUND)

  MARK_AS_ADVANCED(
    X11_X11_INCLUDE_PATH
    X11_X11_LIB
    X11_Xext_LIB
    X11_Xau_LIB
    X11_Xau_INCLUDE_PATH
    X11_Xlib_INCLUDE_PATH
    X11_Xutil_INCLUDE_PATH
    X11_Xcomposite_INCLUDE_PATH
    X11_Xcomposite_LIB
    X11_Xaccess_INCLUDE_PATH
    X11_Xfixes_LIB
    X11_Xfixes_INCLUDE_PATH
    X11_Xrandr_LIB
    X11_Xrandr_INCLUDE_PATH
    X11_Xdamage_LIB
    X11_Xdamage_INCLUDE_PATH
    X11_Xrender_LIB
    X11_Xrender_INCLUDE_PATH
    X11_Xxf86misc_LIB
    X11_xf86misc_INCLUDE_PATH
    X11_xf86vmode_INCLUDE_PATH
    X11_Xinerama_LIB
    X11_Xinerama_INCLUDE_PATH
    X11_XTest_LIB
    X11_XTest_INCLUDE_PATH
    X11_Xcursor_LIB
    X11_Xcursor_INCLUDE_PATH
    X11_dpms_INCLUDE_PATH
    X11_Xt_LIB
    X11_Xt_INCLUDE_PATH
    X11_Xdmcp_LIB
    X11_LIBRARIES
    X11_Xaccessrules_INCLUDE_PATH
    X11_Xaccessstr_INCLUDE_PATH
    X11_Xdmcp_INCLUDE_PATH
    X11_Xkb_INCLUDE_PATH
    X11_Xkblib_INCLUDE_PATH
    X11_Xscreensaver_INCLUDE_PATH
    X11_Xscreensaver_LIB
    X11_Xpm_INCLUDE_PATH
    X11_Xpm_LIB
    X11_Xinput_LIB
    X11_Xinput_INCLUDE_PATH
    X11_Xft_LIB
    X11_Xft_INCLUDE_PATH
    X11_Xshape_INCLUDE_PATH
    X11_Xv_LIB
    X11_Xv_INCLUDE_PATH
    X11_XShm_INCLUDE_PATH
    X11_ICE_LIB
    X11_ICE_INCLUDE_PATH
    X11_SM_LIB
  )
  SET(CMAKE_FIND_FRAMEWORK ${CMAKE_FIND_FRAMEWORK_SAVE})
ENDIF (UNIX)

# X11_FIND_REQUIRED_<component> could be checked too