Modules/FindX11.cmake

   1 #
   2 # try to find X11 on UNIX systems.
   3 #
   4 # The following values are defined
   5 # X11_FOUND           - True if X11 is available
   6 # X11_INCLUDE_DIR  - include directories to use X11
   7 # X11_LIBRARIES          - link against these to use X11
   8
   9 IF (UNIX)
  10   SET(X11_FOUND 0)
  11
  12   SET(X11_INC_SEARCH_PATH
  13     /usr/X11R6/include
  14     /usr/local/include
  15     /usr/include/X11
  16     /usr/openwin/include
  17     /usr/openwin/share/include
  18     /opt/graphics/OpenGL/include
  19     /usr/include
  20   )
  21
  22   SET(X11_LIB_SEARCH_PATH
  23     /usr/X11R6/lib
  24     /usr/local/lib
  25     /usr/openwin/lib
  26     /usr/lib
  27   )
  28
  29   FIND_PATH(X11_X11_INCLUDE_PATH X11/X.h ${X11_INC_SEARCH_PATH})
  30   FIND_PATH(X11_Xlib_INCLUDE_PATH X11/Xlib.h ${X11_INC_SEARCH_PATH})
  31   FIND_PATH(X11_Xutil_INCLUDE_PATH X11/Xutil.h ${X11_INC_SEARCH_PATH})
  32   FIND_LIBRARY(X11_X11_LIB X11 ${X11_LIB_SEARCH_PATH})
  33   FIND_LIBRARY(X11_Xext_LIB Xext ${X11_LIB_SEARCH_PATH})
  34
  35   IF(X11_X11_INCLUDE_PATH)
  36     SET(X11_INCLUDE_DIR ${X11_INCLUDE_DIR} ${X11_X11_INCLUDE_PATH})
  37   ENDIF(X11_X11_INCLUDE_PATH)
  38
  39   IF(X11_Xlib_INCLUDE_PATH)
  40     SET(X11_INCLUDE_DIR ${X11_INCLUDE_DIR} ${X11_Xlib_INCLUDE_PATH})
  41   ENDIF(X11_Xlib_INCLUDE_PATH)
  42
  43   IF(X11_Xutil_INCLUDE_PATH)
  44     SET(X11_INCLUDE_DIR ${X11_INCLUDE_DIR} ${X11_Xutil_INCLUDE_PATH})
  45   ENDIF(X11_Xutil_INCLUDE_PATH)
  46
  47   IF(X11_X11_LIB)
  48     SET(X11_LIBRARIES ${X11_LIBRARIES} ${X11_X11_LIB})
  49   ENDIF(X11_X11_LIB)
  50
  51   IF(X11_Xext_LIB)
  52     SET(X11_LIBRARIES ${X11_LIBRARIES} ${X11_Xext_LIB})
  53   ENDIF(X11_Xext_LIB)
  54
  55   # Deprecated variable for backwards compatibility with CMake 1.4
  56   IF(X11_X11_INCLUDE_PATH)
  57     IF(X11_LIBRARIES)
  58       SET(X11_FOUND 1)
  59     ENDIF(X11_LIBRARIES)
  60   ENDIF(X11_X11_INCLUDE_PATH)
  61
  62   SET(X11_LIBRARY_DIR "")
  63   IF(X11_X11_LIB)
  64     GET_FILENAME_COMPONENT(X11_LIBRARY_DIR ${X11_X11_LIB} PATH)
  65   ENDIF(X11_X11_LIB)
  66
  67   IF(X11_FOUND)
  68     INCLUDE(CheckFunctionExists)
  69     INCLUDE(CheckLibraryExists)
  70
  71     # Translated from an autoconf-generated configure script.
  72     # See libs.m4 in autoconf's m4 directory.
  73     IF($ENV{ISC} MATCHES "^yes$")
  74       SET(X11_X_EXTRA_LIBS -lnsl_s -linet)
  75     ELSE($ENV{ISC} MATCHES "^yes$")
  76       SET(X11_X_EXTRA_LIBS "")
  77
  78       # See if XOpenDisplay in X11 works by itself.
  79       CHECK_LIBRARY_EXISTS("${X11_LIBRARIES}" "XOpenDisplay" "${X11_LIBRARY_DIR}" X11_LIB_X11_SOLO)
  80       IF(NOT X11_LIB_X11_SOLO)
  81         # Find library needed for dnet_ntoa.
  82         CHECK_LIBRARY_EXISTS("dnet" "dnet_ntoa" "" X11_LIB_DNET_HAS_DNET_NTOA)
  83         IF (X11_LIB_DNET_HAS_DNET_NTOA)
  84           SET (X11_X_EXTRA_LIBS ${X11_X_EXTRA_LIBS} -ldnet)
  85         ELSE (X11_LIB_DNET_HAS_DNET_NTOA)
  86           CHECK_LIBRARY_EXISTS("dnet_stub" "dnet_ntoa" "" X11_LIB_DNET_STUB_HAS_DNET_NTOA)
  87           IF (X11_LIB_DNET_STUB_HAS_DNET_NTOA)
  88             SET (X11_X_EXTRA_LIBS ${X11_X_EXTRA_LIBS} -ldnet_stub)
  89           ENDIF (X11_LIB_DNET_STUB_HAS_DNET_NTOA)
  90         ENDIF (X11_LIB_DNET_HAS_DNET_NTOA)
  91       ENDIF(NOT X11_LIB_X11_SOLO)
  92
  93       # Find library needed for gethostbyname.
  94       CHECK_FUNCTION_EXISTS("gethostbyname" CMAKE_HAVE_GETHOSTBYNAME)
  95       IF(NOT CMAKE_HAVE_GETHOSTBYNAME)
  96         CHECK_LIBRARY_EXISTS("nsl" "gethostbyname" "" CMAKE_LIB_NSL_HAS_GETHOSTBYNAME)
  97         IF (CMAKE_LIB_NSL_HAS_GETHOSTBYNAME)
  98           SET (X11_X_EXTRA_LIBS ${X11_X_EXTRA_LIBS} -lnsl)
  99         ELSE (CMAKE_LIB_NSL_HAS_GETHOSTBYNAME)
 100           CHECK_LIBRARY_EXISTS("bsd" "gethostbyname" "" CMAKE_LIB_BSD_HAS_GETHOSTBYNAME)
 101           IF (CMAKE_LIB_BSD_HAS_GETHOSTBYNAME)
 102             SET (X11_X_EXTRA_LIBS ${X11_X_EXTRA_LIBS} -lbsd)
 103           ENDIF (CMAKE_LIB_BSD_HAS_GETHOSTBYNAME)
 104         ENDIF (CMAKE_LIB_NSL_HAS_GETHOSTBYNAME)
 105       ENDIF(NOT CMAKE_HAVE_GETHOSTBYNAME)
 106
 107       # Find library needed for connect.
 108       CHECK_FUNCTION_EXISTS("connect" CMAKE_HAVE_CONNECT)
 109       IF(NOT CMAKE_HAVE_CONNECT)
 110         CHECK_LIBRARY_EXISTS("socket" "connect" "" CMAKE_LIB_SOCKET_HAS_CONNECT)
 111         IF (CMAKE_LIB_SOCKET_HAS_CONNECT)
 112           SET (X11_X_EXTRA_LIBS -lsocket ${X11_X_EXTRA_LIBS})
 113         ENDIF (CMAKE_LIB_SOCKET_HAS_CONNECT)
 114       ENDIF(NOT CMAKE_HAVE_CONNECT)
 115
 116       # Find library needed for remove.
 117       CHECK_FUNCTION_EXISTS("remove" CMAKE_HAVE_REMOVE)
 118       IF(NOT CMAKE_HAVE_REMOVE)
 119         CHECK_LIBRARY_EXISTS("posix" "remove" "" CMAKE_LIB_POSIX_HAS_REMOVE)
 120         IF (CMAKE_LIB_POSIX_HAS_REMOVE)
 121           SET (X11_X_EXTRA_LIBS ${X11_X_EXTRA_LIBS} -lposix)
 122         ENDIF (CMAKE_LIB_POSIX_HAS_REMOVE)
 123       ENDIF(NOT CMAKE_HAVE_REMOVE)
 124
 125       # Find library needed for shmat.
 126       CHECK_FUNCTION_EXISTS("shmat" CMAKE_HAVE_SHMAT)
 127       IF(NOT CMAKE_HAVE_SHMAT)
 128         CHECK_LIBRARY_EXISTS("ipc" "shmat" "" CMAKE_LIB_IPS_HAS_SHMAT)
 129         IF (CMAKE_LIB_IPS_HAS_SHMAT)
 130           SET (X11_X_EXTRA_LIBS ${X11_X_EXTRA_LIBS} -lipc)
 131         ENDIF (CMAKE_LIB_IPS_HAS_SHMAT)
 132       ENDIF(NOT CMAKE_HAVE_SHMAT)
 133     ENDIF($ENV{ISC} MATCHES "^yes$")
 134
 135     CHECK_LIBRARY_EXISTS("ICE" "IceConnectionNumber" "${X11_LIBRARY_DIR}"
 136                          CMAKE_LIB_ICE_HAS_ICECONNECTIONNUMBER)
 137     IF(CMAKE_LIB_ICE_HAS_ICECONNECTIONNUMBER)
 138       SET (X11_X_PRE_LIBS -lSM -lICE)
 139     ENDIF(CMAKE_LIB_ICE_HAS_ICECONNECTIONNUMBER)
 140     # Build the final list of libraries.
 141     SET (X11_LIBRARIES ${X11_X_PRE_LIBS} ${X11_LIBRARIES} ${X11_X_EXTRA_LIBS})
 142   ENDIF(X11_FOUND)
 143
 144   MARK_AS_ADVANCED(
 145     X11_X11_INCLUDE_PATH
 146     X11_X11_LIB
 147     X11_Xext_LIB
 148     X11_Xlib_INCLUDE_PATH
 149     X11_Xutil_INCLUDE_PATH
 150     X11_LIBRARIES
 151     )
 152
 153 ENDIF (UNIX)