CMakeLua/Modules/FindX11.cmake

   1 # - Find X11 installation
   2 # Try to find X11 on UNIX systems. The following values are defined
   3 #  X11_FOUND        - True if X11 is available
   4 #  X11_INCLUDE_DIR  - include directories to use X11
   5 #  X11_LIBRARIES    - link against these to use X11
   6 #
   7 # and also the following more fine grained variables:
   8 # Include paths: X11_ICE_INCLUDE_PATH,          X11_ICE_LIB,        X11_ICE_FOUND
   9 #                X11_Xaccessrules_INCLUDE_PATH,                     X11_Xaccess_FOUND
  10 #                X11_Xaccessstr_INCLUDE_PATH,                       X11_Xaccess_FOUND
  11 #                X11_Xau_INCLUDE_PATH,          X11_Xau_LIB,        X11_Xau_FOUND
  12 #                X11_Xcomposite_INCLUDE_PATH,   X11_Xcomposite_LIB, X11_Xcomposite_FOUND
  13 #                X11_Xcursor_INCLUDE_PATH,      X11_Xcursor_LIB,    X11_Xcursor_FOUND
  14 #                X11_Xdamage_INCLUDE_PATH,      X11_Xdamage_LIB,    X11_Xdamage_FOUND
  15 #                X11_Xdmcp_INCLUDE_PATH,        X11_Xdmcp_LIB,      X11_Xdmcp_FOUND
  16 #                                               X11_Xext_LIB,       X11_Xext_FOUND
  17 #                X11_dpms_INCLUDE_PATH,         (in X11_Xext_LIB),  X11_dpms_FOUND
  18 #                X11_XShm_INCLUDE_PATH,         (in X11_Xext_LIB),  X11_XShm_FOUND
  19 #                X11_Xshape_INCLUDE_PATH,       (in X11_Xext_LIB),  X11_Xshape_FOUND
  20 #                X11_xf86misc_INCLUDE_PATH,     X11_Xxf86misc_LIB,  X11_xf86misc_FOUND
  21 #                X11_xf86vmode_INCLUDE_PATH,                        X11_xf86vmode_FOUND
  22 #                X11_Xfixes_INCLUDE_PATH,       X11_Xfixes_LIB,     X11_Xfixes_FOUND
  23 #                X11_Xft_INCLUDE_PATH,          X11_Xft_LIB,        X11_Xft_FOUND
  24 #                X11_Xinerama_INCLUDE_PATH,     X11_Xinerama_LIB,   X11_Xinerama_FOUND
  25 #                X11_Xinput_INCLUDE_PATH,       X11_Xinput_LIB,     X11_Xinput_FOUND
  26 #                X11_Xkb_INCLUDE_PATH,                              X11_Xkb_FOUND
  27 #                X11_Xkblib_INCLUDE_PATH,                           X11_Xkb_FOUND
  28 #                X11_Xpm_INCLUDE_PATH,          X11_Xpm_LIB,        X11_Xpm_FOUND
  29 #                X11_XTest_INCLUDE_PATH,        X11_XTest_LIB,      X11_XTest_FOUND
  30 #                X11_Xrandr_INCLUDE_PATH,       X11_Xrandr_LIB,     X11_Xrandr_FOUND
  31 #                X11_Xrender_INCLUDE_PATH,      X11_Xrender_LIB,    X11_Xrender_FOUND
  32 #                X11_Xscreensaver_INCLUDE_PATH, X11_Xscreensaver_LIB, X11_Xscreensaver_FOUND
  33 #                X11_Xt_INCLUDE_PATH,           X11_Xt_LIB,         X11_Xt_FOUND
  34 #                X11_Xutil_INCLUDE_PATH,                            X11_Xutil_FOUND
  35 #                X11_Xv_INCLUDE_PATH,           X11_Xv_LIB,         X11_Xv_FOUND
  36
  37 # Copyright (c) 2002 Kitware, Inc., Insight Consortium.  All rights reserved.
  38 # See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details.
  39
  40 IF (UNIX)
  41   SET(X11_FOUND 0)
  42   # X11 is never a framework and some header files may be
  43   # found in tcl on the mac
  44   SET(CMAKE_FIND_FRAMEWORK_SAVE ${CMAKE_FIND_FRAMEWORK})
  45   SET(CMAKE_FIND_FRAMEWORK NEVER)
  46   SET(X11_INC_SEARCH_PATH
  47     /usr/pkg/xorg/include
  48     /usr/X11R6/include
  49     /usr/local/include
  50     /usr/include/X11
  51     /usr/openwin/include
  52     /usr/openwin/share/include
  53     /opt/graphics/OpenGL/include
  54     /usr/include
  55   )
  56
  57   SET(X11_LIB_SEARCH_PATH
  58     /usr/pkg/xorg/lib
  59     /usr/X11R6/lib
  60     /usr/local/lib
  61     /usr/openwin/lib
  62     /usr/lib
  63   )
  64
  65   FIND_PATH(X11_X11_INCLUDE_PATH X11/X.h                             ${X11_INC_SEARCH_PATH})
  66   FIND_PATH(X11_Xlib_INCLUDE_PATH X11/Xlib.h                         ${X11_INC_SEARCH_PATH})
  67
  68   # Look for includes; keep the list sorted by name of the cmake *_INCLUDE_PATH
  69   # variable (which doesn't need to match the include file name).
  70
  71   # Solaris lacks XKBrules.h, so we should skip kxkbd there.
  72   FIND_PATH(X11_ICE_INCLUDE_PATH X11/ICE/ICE.h                       ${X11_INC_SEARCH_PATH})
  73   FIND_PATH(X11_Xaccessrules_INCLUDE_PATH X11/extensions/XKBrules.h  ${X11_INC_SEARCH_PATH})
  74   FIND_PATH(X11_Xaccessstr_INCLUDE_PATH X11/extensions/XKBstr.h      ${X11_INC_SEARCH_PATH})
  75   FIND_PATH(X11_Xau_INCLUDE_PATH X11/Xauth.h                         ${X11_INC_SEARCH_PATH})
  76   FIND_PATH(X11_Xcomposite_INCLUDE_PATH X11/extensions/Xcomposite.h  ${X11_INC_SEARCH_PATH})
  77   FIND_PATH(X11_Xcursor_INCLUDE_PATH X11/Xcursor/Xcursor.h           ${X11_INC_SEARCH_PATH})
  78   FIND_PATH(X11_Xdamage_INCLUDE_PATH X11/extensions/Xdamage.h        ${X11_INC_SEARCH_PATH})
  79   FIND_PATH(X11_Xdmcp_INCLUDE_PATH X11/Xdmcp.h                       ${X11_INC_SEARCH_PATH})
  80   FIND_PATH(X11_dpms_INCLUDE_PATH X11/extensions/dpms.h              ${X11_INC_SEARCH_PATH})
  81   FIND_PATH(X11_xf86misc_INCLUDE_PATH X11/extensions/xf86misc.h      ${X11_INC_SEARCH_PATH})
  82   FIND_PATH(X11_xf86vmode_INCLUDE_PATH X11/extensions/xf86vmode.h    ${X11_INC_SEARCH_PATH})
  83   FIND_PATH(X11_Xfixes_INCLUDE_PATH X11/extensions/Xfixes.h          ${X11_INC_SEARCH_PATH})
  84   FIND_PATH(X11_Xft_INCLUDE_PATH X11/Xft/Xft.h                       ${X11_INC_SEARCH_PATH})
  85   FIND_PATH(X11_Xinerama_INCLUDE_PATH X11/extensions/Xinerama.h      ${X11_INC_SEARCH_PATH})
  86   FIND_PATH(X11_Xinput_INCLUDE_PATH X11/extensions/XInput.h          ${X11_INC_SEARCH_PATH})
  87   FIND_PATH(X11_Xkb_INCLUDE_PATH X11/extensions/XKB.h                ${X11_INC_SEARCH_PATH})
  88   FIND_PATH(X11_Xkblib_INCLUDE_PATH X11/XKBlib.h                     ${X11_INC_SEARCH_PATH})
  89   FIND_PATH(X11_Xpm_INCLUDE_PATH X11/xpm.h                           ${X11_INC_SEARCH_PATH})
  90   FIND_PATH(X11_XTest_INCLUDE_PATH X11/extensions/XTest.h            ${X11_INC_SEARCH_PATH})
  91   FIND_PATH(X11_XShm_INCLUDE_PATH X11/extensions/XShm.h              ${X11_INC_SEARCH_PATH})
  92   FIND_PATH(X11_Xrandr_INCLUDE_PATH X11/extensions/Xrandr.h          ${X11_INC_SEARCH_PATH})
  93   FIND_PATH(X11_Xrender_INCLUDE_PATH X11/extensions/Xrender.h        ${X11_INC_SEARCH_PATH})
  94   FIND_PATH(X11_Xscreensaver_INCLUDE_PATH X11/extensions/scrnsaver.h ${X11_INC_SEARCH_PATH})
  95   FIND_PATH(X11_Xshape_INCLUDE_PATH X11/extensions/shape.h           ${X11_INC_SEARCH_PATH})
  96   FIND_PATH(X11_Xutil_INCLUDE_PATH X11/Xutil.h                       ${X11_INC_SEARCH_PATH})
  97   FIND_PATH(X11_Xt_INCLUDE_PATH X11/Intrinsic.h                      ${X11_INC_SEARCH_PATH})
  98   FIND_PATH(X11_Xv_INCLUDE_PATH X11/extensions/Xvlib.h               ${X11_INC_SEARCH_PATH})
  99
 100
 101   FIND_LIBRARY(X11_X11_LIB X11               ${X11_LIB_SEARCH_PATH})
 102
 103   # Find additional X libraries. Keep list sorted by library name.
 104   FIND_LIBRARY(X11_ICE_LIB ICE               ${X11_LIB_SEARCH_PATH})
 105   FIND_LIBRARY(X11_SM_LIB SM                 ${X11_LIB_SEARCH_PATH})
 106   FIND_LIBRARY(X11_Xau_LIB Xau               ${X11_LIB_SEARCH_PATH})
 107   FIND_LIBRARY(X11_Xcomposite_LIB Xcomposite ${X11_LIB_SEARCH_PATH})
 108   FIND_LIBRARY(X11_Xcursor_LIB Xcursor       ${X11_LIB_SEARCH_PATH})
 109   FIND_LIBRARY(X11_Xdamage_LIB Xdamage       ${X11_LIB_SEARCH_PATH})
 110   FIND_LIBRARY(X11_Xdmcp_LIB Xdmcp           ${X11_LIB_SEARCH_PATH})
 111   FIND_LIBRARY(X11_Xext_LIB Xext             ${X11_LIB_SEARCH_PATH})
 112   FIND_LIBRARY(X11_Xfixes_LIB Xfixes         ${X11_LIB_SEARCH_PATH})
 113   FIND_LIBRARY(X11_Xft_LIB Xft               ${X11_LIB_SEARCH_PATH})
 114   FIND_LIBRARY(X11_Xinerama_LIB Xinerama     ${X11_LIB_SEARCH_PATH})
 115   FIND_LIBRARY(X11_Xinput_LIB Xi             ${X11_LIB_SEARCH_PATH})
 116   FIND_LIBRARY(X11_Xpm_LIB Xpm               ${X11_LIB_SEARCH_PATH})
 117   FIND_LIBRARY(X11_Xrandr_LIB Xrandr         ${X11_LIB_SEARCH_PATH})
 118   FIND_LIBRARY(X11_Xrender_LIB Xrender       ${X11_LIB_SEARCH_PATH})
 119   FIND_LIBRARY(X11_Xscreensaver_LIB Xss      ${X11_LIB_SEARCH_PATH})
 120   FIND_LIBRARY(X11_Xt_LIB Xt                 ${X11_LIB_SEARCH_PATH})
 121   FIND_LIBRARY(X11_XTest_LIB Xtst            ${X11_LIB_SEARCH_PATH})
 122   FIND_LIBRARY(X11_Xv_LIB Xv                 ${X11_LIB_SEARCH_PATH})
 123   FIND_LIBRARY(X11_Xxf86misc_LIB Xxf86misc   ${X11_LIB_SEARCH_PATH})
 124
 125   SET(X11_LIBRARY_DIR "")
 126   IF(X11_X11_LIB)
 127     GET_FILENAME_COMPONENT(X11_LIBRARY_DIR ${X11_X11_LIB} PATH)
 128   ENDIF(X11_X11_LIB)
 129
 130   SET(X11_INCLUDE_DIR) # start with empty list
 131   IF(X11_X11_INCLUDE_PATH)
 132     SET(X11_INCLUDE_DIR ${X11_INCLUDE_DIR} ${X11_X11_INCLUDE_PATH})
 133   ENDIF(X11_X11_INCLUDE_PATH)
 134
 135   IF(X11_Xlib_INCLUDE_PATH)
 136     SET(X11_INCLUDE_DIR ${X11_INCLUDE_DIR} ${X11_Xlib_INCLUDE_PATH})
 137   ENDIF(X11_Xlib_INCLUDE_PATH)
 138
 139   IF(X11_Xutil_INCLUDE_PATH)
 140     SET(X11_Xutil_FOUND TRUE)
 141     SET(X11_INCLUDE_DIR ${X11_INCLUDE_DIR} ${X11_Xutil_INCLUDE_PATH})
 142   ENDIF(X11_Xutil_INCLUDE_PATH)
 143
 144   IF(X11_Xshape_INCLUDE_PATH)
 145     SET(X11_Xshape_FOUND TRUE)
 146     SET(X11_INCLUDE_DIR ${X11_INCLUDE_DIR} ${X11_Xshape_INCLUDE_PATH})
 147   ENDIF(X11_Xshape_INCLUDE_PATH)
 148
 149   SET(X11_LIBRARIES) # start with empty list
 150   IF(X11_X11_LIB)
 151     SET(X11_LIBRARIES ${X11_LIBRARIES} ${X11_X11_LIB})
 152   ENDIF(X11_X11_LIB)
 153
 154   IF(X11_Xext_LIB)
 155     SET(X11_Xext_FOUND TRUE)
 156     SET(X11_LIBRARIES ${X11_LIBRARIES} ${X11_Xext_LIB})
 157   ENDIF(X11_Xext_LIB)
 158
 159   IF(X11_Xt_LIB AND X11_Xt_INCLUDE_PATH)
 160     SET(X11_Xt_FOUND TRUE)
 161   ENDIF(X11_Xt_LIB AND X11_Xt_INCLUDE_PATH)
 162
 163   IF(X11_Xft_LIB AND X11_Xft_INCLUDE_PATH)
 164     SET(X11_Xft_FOUND TRUE)
 165     SET(X11_INCLUDE_DIR ${X11_INCLUDE_DIR} ${X11_Xft_INCLUDE_PATH})
 166   ENDIF(X11_Xft_LIB AND X11_Xft_INCLUDE_PATH)
 167
 168   IF(X11_Xv_LIB AND X11_Xv_INCLUDE_PATH)
 169     SET(X11_Xv_FOUND TRUE)
 170     SET(X11_INCLUDE_DIR ${X11_INCLUDE_DIR} ${X11_Xv_INCLUDE_PATH})
 171   ENDIF(X11_Xv_LIB AND X11_Xv_INCLUDE_PATH)
 172
 173   IF (X11_Xau_LIB AND X11_Xau_INCLUDE_PATH)
 174     SET(X11_Xau_FOUND TRUE)
 175   ENDIF (X11_Xau_LIB AND X11_Xau_INCLUDE_PATH)
 176
 177   IF (X11_Xdmcp_INCLUDE_PATH AND X11_Xdmcp_LIB)
 178       SET(X11_Xdmcp_FOUND TRUE)
 179       SET(X11_INCLUDE_DIR ${X11_INCLUDE_DIR} ${X11_Xdmcp_INCLUDE_PATH})
 180   ENDIF (X11_Xdmcp_INCLUDE_PATH AND X11_Xdmcp_LIB)
 181
 182   IF (X11_Xaccessrules_INCLUDE_PATH AND X11_Xaccessstr_INCLUDE_PATH)
 183       SET(X11_Xaccess_FOUND TRUE)
 184       SET(X11_Xaccess_INCLUDE_PATH ${X11_Xaccessstr_INCLUDE_PATH})
 185       SET(X11_INCLUDE_DIR ${X11_INCLUDE_DIR} ${X11_Xaccess_INCLUDE_PATH})
 186   ENDIF (X11_Xaccessrules_INCLUDE_PATH AND X11_Xaccessstr_INCLUDE_PATH)
 187
 188   IF (X11_Xpm_INCLUDE_PATH AND X11_Xpm_LIB)
 189       SET(X11_Xpm_FOUND TRUE)
 190       SET(X11_INCLUDE_DIR ${X11_INCLUDE_DIR} ${X11_Xpm_INCLUDE_PATH})
 191   ENDIF (X11_Xpm_INCLUDE_PATH AND X11_Xpm_LIB)
 192
 193   IF (X11_Xcomposite_INCLUDE_PATH AND X11_Xcomposite_LIB)
 194      SET(X11_Xcomposite_FOUND TRUE)
 195      SET(X11_INCLUDE_DIR ${X11_INCLUDE_DIR} ${X11_Xcomposite_INCLUDE_PATH})
 196   ENDIF (X11_Xcomposite_INCLUDE_PATH AND X11_Xcomposite_LIB)
 197
 198   IF (X11_Xdamage_INCLUDE_PATH AND X11_Xdamage_LIB)
 199      SET(X11_Xdamage_FOUND TRUE)
 200      SET(X11_INCLUDE_DIR ${X11_INCLUDE_DIR} ${X11_Xdamage_INCLUDE_PATH})
 201   ENDIF (X11_Xdamage_INCLUDE_PATH AND X11_Xdamage_LIB)
 202
 203   IF (X11_XShm_INCLUDE_PATH)
 204      SET(X11_XShm_FOUND TRUE)
 205      SET(X11_INCLUDE_DIR ${X11_INCLUDE_DIR} ${X11_XShm_INCLUDE_PATH})
 206   ENDIF (X11_XShm_INCLUDE_PATH)
 207
 208   IF (X11_XTest_INCLUDE_PATH AND X11_XTest_LIB)
 209       SET(X11_XTest_FOUND TRUE)
 210       SET(X11_INCLUDE_DIR ${X11_INCLUDE_DIR} ${X11_XTest_INCLUDE_PATH})
 211   ENDIF (X11_XTest_INCLUDE_PATH AND X11_XTest_LIB)
 212
 213   IF (X11_Xinerama_INCLUDE_PATH AND X11_Xinerama_LIB)
 214      SET(X11_Xinerama_FOUND TRUE)
 215      SET(X11_INCLUDE_DIR ${X11_INCLUDE_DIR} ${X11_Xinerama_INCLUDE_PATH})
 216   ENDIF (X11_Xinerama_INCLUDE_PATH  AND X11_Xinerama_LIB)
 217
 218   IF (X11_Xfixes_INCLUDE_PATH AND X11_Xfixes_LIB)
 219      SET(X11_Xfixes_FOUND TRUE)
 220      SET(X11_INCLUDE_DIR ${X11_INCLUDE_DIR} ${X11_Xfixes_INCLUDE_PATH})
 221   ENDIF (X11_Xfixes_INCLUDE_PATH AND X11_Xfixes_LIB)
 222
 223   IF (X11_Xrender_INCLUDE_PATH AND X11_Xrender_LIB)
 224      SET(X11_Xrender_FOUND TRUE)
 225      SET(X11_INCLUDE_DIR ${X11_INCLUDE_DIR} ${X11_Xrender_INCLUDE_PATH})
 226   ENDIF (X11_Xrender_INCLUDE_PATH AND X11_Xrender_LIB)
 227
 228   IF (X11_Xrandr_INCLUDE_PATH AND X11_Xrandr_LIB)
 229      SET(X11_Xrandr_FOUND TRUE)
 230      SET(X11_INCLUDE_DIR ${X11_INCLUDE_DIR} ${X11_Xrandr_INCLUDE_PATH})
 231   ENDIF (X11_Xrandr_INCLUDE_PATH AND X11_Xrandr_LIB)
 232
 233   IF (X11_xf86misc_INCLUDE_PATH AND X11_Xxf86misc_LIB)
 234      SET(X11_xf86misc_FOUND TRUE)
 235      SET(X11_INCLUDE_DIR ${X11_INCLUDE_DIR} ${X11_xf86misc_INCLUDE_PATH})
 236   ENDIF (X11_xf86misc_INCLUDE_PATH  AND X11_Xxf86misc_LIB)
 237
 238   IF (X11_xf86vmode_INCLUDE_PATH)
 239      SET(X11_xf86vmode_FOUND TRUE)
 240      SET(X11_INCLUDE_DIR ${X11_INCLUDE_DIR} ${X11_xf86vmode_INCLUDE_PATH})
 241   ENDIF (X11_xf86vmode_INCLUDE_PATH)
 242
 243   IF (X11_Xcursor_INCLUDE_PATH AND X11_Xcursor_LIB)
 244      SET(X11_Xcursor_FOUND TRUE)
 245      SET(X11_INCLUDE_DIR ${X11_INCLUDE_DIR} ${X11_Xcursor_INCLUDE_PATH})
 246   ENDIF (X11_Xcursor_INCLUDE_PATH AND X11_Xcursor_LIB)
 247
 248   IF (X11_Xscreensaver_INCLUDE_PATH AND X11_Xscreensaver_LIB)
 249      SET(X11_Xscreensaver_FOUND TRUE)
 250      SET(X11_INCLUDE_DIR ${X11_INCLUDE_DIR} ${X11_Xscreensaver_INCLUDE_PATH})
 251   ENDIF (X11_Xscreensaver_INCLUDE_PATH AND X11_Xscreensaver_LIB)
 252
 253   IF (X11_dpms_INCLUDE_PATH)
 254      SET(X11_dpms_FOUND TRUE)
 255      SET(X11_INCLUDE_DIR ${X11_INCLUDE_DIR} ${X11_dpms_INCLUDE_PATH})
 256   ENDIF (X11_dpms_INCLUDE_PATH)
 257
 258   IF (X11_Xkb_INCLUDE_PATH AND X11_Xkblib_INCLUDE_PATH AND X11_Xlib_INCLUDE_PATH)
 259      SET(X11_Xkb_FOUND TRUE)
 260      SET(X11_INCLUDE_DIR ${X11_INCLUDE_DIR} ${X11_Xkb_INCLUDE_PATH} )
 261   ENDIF (X11_Xkb_INCLUDE_PATH AND X11_Xkblib_INCLUDE_PATH AND X11_Xlib_INCLUDE_PATH)
 262
 263   IF (X11_Xinput_INCLUDE_PATH AND X11_Xinput_LIB)
 264      SET(X11_Xinput_FOUND TRUE)
 265      SET(X11_INCLUDE_DIR ${X11_INCLUDE_DIR} ${X11_Xinput_INCLUDE_PATH})
 266   ENDIF (X11_Xinput_INCLUDE_PATH AND X11_Xinput_LIB)
 267
 268   IF(X11_ICE_LIB AND X11_ICE_INCLUDE_PATH)
 269      SET(X11_ICE_FOUND TRUE)
 270   ENDIF(X11_ICE_LIB AND X11_ICE_INCLUDE_PATH)
 271
 272   # Deprecated variable for backwards compatibility with CMake 1.4
 273   IF (X11_X11_INCLUDE_PATH AND X11_LIBRARIES)
 274     SET(X11_FOUND 1)
 275   ENDIF (X11_X11_INCLUDE_PATH AND X11_LIBRARIES)
 276
 277   IF(X11_FOUND)
 278     INCLUDE(CheckFunctionExists)
 279     INCLUDE(CheckLibraryExists)
 280
 281     # Translated from an autoconf-generated configure script.
 282     # See libs.m4 in autoconf's m4 directory.
 283     IF($ENV{ISC} MATCHES "^yes$")
 284       SET(X11_X_EXTRA_LIBS -lnsl_s -linet)
 285     ELSE($ENV{ISC} MATCHES "^yes$")
 286       SET(X11_X_EXTRA_LIBS "")
 287
 288       # See if XOpenDisplay in X11 works by itself.
 289       CHECK_LIBRARY_EXISTS("${X11_LIBRARIES}" "XOpenDisplay" "${X11_LIBRARY_DIR}" X11_LIB_X11_SOLO)
 290       IF(NOT X11_LIB_X11_SOLO)
 291         # Find library needed for dnet_ntoa.
 292         CHECK_LIBRARY_EXISTS("dnet" "dnet_ntoa" "" X11_LIB_DNET_HAS_DNET_NTOA)
 293         IF (X11_LIB_DNET_HAS_DNET_NTOA)
 294           SET (X11_X_EXTRA_LIBS ${X11_X_EXTRA_LIBS} -ldnet)
 295         ELSE (X11_LIB_DNET_HAS_DNET_NTOA)
 296           CHECK_LIBRARY_EXISTS("dnet_stub" "dnet_ntoa" "" X11_LIB_DNET_STUB_HAS_DNET_NTOA)
 297           IF (X11_LIB_DNET_STUB_HAS_DNET_NTOA)
 298             SET (X11_X_EXTRA_LIBS ${X11_X_EXTRA_LIBS} -ldnet_stub)
 299           ENDIF (X11_LIB_DNET_STUB_HAS_DNET_NTOA)
 300         ENDIF (X11_LIB_DNET_HAS_DNET_NTOA)
 301       ENDIF(NOT X11_LIB_X11_SOLO)
 302
 303       # Find library needed for gethostbyname.
 304       CHECK_FUNCTION_EXISTS("gethostbyname" CMAKE_HAVE_GETHOSTBYNAME)
 305       IF(NOT CMAKE_HAVE_GETHOSTBYNAME)
 306         CHECK_LIBRARY_EXISTS("nsl" "gethostbyname" "" CMAKE_LIB_NSL_HAS_GETHOSTBYNAME)
 307         IF (CMAKE_LIB_NSL_HAS_GETHOSTBYNAME)
 308           SET (X11_X_EXTRA_LIBS ${X11_X_EXTRA_LIBS} -lnsl)
 309         ELSE (CMAKE_LIB_NSL_HAS_GETHOSTBYNAME)
 310           CHECK_LIBRARY_EXISTS("bsd" "gethostbyname" "" CMAKE_LIB_BSD_HAS_GETHOSTBYNAME)
 311           IF (CMAKE_LIB_BSD_HAS_GETHOSTBYNAME)
 312             SET (X11_X_EXTRA_LIBS ${X11_X_EXTRA_LIBS} -lbsd)
 313           ENDIF (CMAKE_LIB_BSD_HAS_GETHOSTBYNAME)
 314         ENDIF (CMAKE_LIB_NSL_HAS_GETHOSTBYNAME)
 315       ENDIF(NOT CMAKE_HAVE_GETHOSTBYNAME)
 316
 317       # Find library needed for connect.
 318       CHECK_FUNCTION_EXISTS("connect" CMAKE_HAVE_CONNECT)
 319       IF(NOT CMAKE_HAVE_CONNECT)
 320         CHECK_LIBRARY_EXISTS("socket" "connect" "" CMAKE_LIB_SOCKET_HAS_CONNECT)
 321         IF (CMAKE_LIB_SOCKET_HAS_CONNECT)
 322           SET (X11_X_EXTRA_LIBS -lsocket ${X11_X_EXTRA_LIBS})
 323         ENDIF (CMAKE_LIB_SOCKET_HAS_CONNECT)
 324       ENDIF(NOT CMAKE_HAVE_CONNECT)
 325
 326       # Find library needed for remove.
 327       CHECK_FUNCTION_EXISTS("remove" CMAKE_HAVE_REMOVE)
 328       IF(NOT CMAKE_HAVE_REMOVE)
 329         CHECK_LIBRARY_EXISTS("posix" "remove" "" CMAKE_LIB_POSIX_HAS_REMOVE)
 330         IF (CMAKE_LIB_POSIX_HAS_REMOVE)
 331           SET (X11_X_EXTRA_LIBS ${X11_X_EXTRA_LIBS} -lposix)
 332         ENDIF (CMAKE_LIB_POSIX_HAS_REMOVE)
 333       ENDIF(NOT CMAKE_HAVE_REMOVE)
 334
 335       # Find library needed for shmat.
 336       CHECK_FUNCTION_EXISTS("shmat" CMAKE_HAVE_SHMAT)
 337       IF(NOT CMAKE_HAVE_SHMAT)
 338         CHECK_LIBRARY_EXISTS("ipc" "shmat" "" CMAKE_LIB_IPS_HAS_SHMAT)
 339         IF (CMAKE_LIB_IPS_HAS_SHMAT)
 340           SET (X11_X_EXTRA_LIBS ${X11_X_EXTRA_LIBS} -lipc)
 341         ENDIF (CMAKE_LIB_IPS_HAS_SHMAT)
 342       ENDIF(NOT CMAKE_HAVE_SHMAT)
 343     ENDIF($ENV{ISC} MATCHES "^yes$")
 344
 345     IF (X11_ICE_FOUND)
 346       CHECK_LIBRARY_EXISTS("ICE" "IceConnectionNumber" "${X11_LIBRARY_DIR}"
 347                             CMAKE_LIB_ICE_HAS_ICECONNECTIONNUMBER)
 348       IF(CMAKE_LIB_ICE_HAS_ICECONNECTIONNUMBER)
 349         SET (X11_X_PRE_LIBS ${X11_ICE_LIB})
 350         IF(X11_SM_LIB)
 351           SET (X11_X_PRE_LIBS ${X11_SM_LIB} ${X11_X_PRE_LIBS})
 352         ENDIF(X11_SM_LIB)
 353       ENDIF(CMAKE_LIB_ICE_HAS_ICECONNECTIONNUMBER)
 354     ENDIF (X11_ICE_FOUND)
 355
 356     # Build the final list of libraries.
 357     SET(X11_LIBRARIES ${X11_X_PRE_LIBS} ${X11_LIBRARIES} ${X11_X_EXTRA_LIBS})
 358
 359     INCLUDE(FindPackageMessage)
 360     FIND_PACKAGE_MESSAGE(X11 "Found X11: ${X11_X11_LIB}"
 361       "[${X11_X11_LIB}][${X11_INCLUDE_DIR}]")
 362   ELSE (X11_FOUND)
 363     IF (X11_FIND_REQUIRED)
 364       MESSAGE(FATAL_ERROR "Could not find X11")
 365     ENDIF (X11_FIND_REQUIRED)
 366   ENDIF (X11_FOUND)
 367
 368   MARK_AS_ADVANCED(
 369     X11_X11_INCLUDE_PATH
 370     X11_X11_LIB
 371     X11_Xext_LIB
 372     X11_Xau_LIB
 373     X11_Xau_INCLUDE_PATH
 374     X11_Xlib_INCLUDE_PATH
 375     X11_Xutil_INCLUDE_PATH
 376     X11_Xcomposite_INCLUDE_PATH
 377     X11_Xcomposite_LIB
 378     X11_Xaccess_INCLUDE_PATH
 379     X11_Xfixes_LIB
 380     X11_Xfixes_INCLUDE_PATH
 381     X11_Xrandr_LIB
 382     X11_Xrandr_INCLUDE_PATH
 383     X11_Xdamage_LIB
 384     X11_Xdamage_INCLUDE_PATH
 385     X11_Xrender_LIB
 386     X11_Xrender_INCLUDE_PATH
 387     X11_Xxf86misc_LIB
 388     X11_xf86misc_INCLUDE_PATH
 389     X11_xf86vmode_INCLUDE_PATH
 390     X11_Xinerama_LIB
 391     X11_Xinerama_INCLUDE_PATH
 392     X11_XTest_LIB
 393     X11_XTest_INCLUDE_PATH
 394     X11_Xcursor_LIB
 395     X11_Xcursor_INCLUDE_PATH
 396     X11_dpms_INCLUDE_PATH
 397     X11_Xt_LIB
 398     X11_Xt_INCLUDE_PATH
 399     X11_Xdmcp_LIB
 400     X11_LIBRARIES
 401     X11_Xaccessrules_INCLUDE_PATH
 402     X11_Xaccessstr_INCLUDE_PATH
 403     X11_Xdmcp_INCLUDE_PATH
 404     X11_Xkb_INCLUDE_PATH
 405     X11_Xkblib_INCLUDE_PATH
 406     X11_Xscreensaver_INCLUDE_PATH
 407     X11_Xscreensaver_LIB
 408     X11_Xpm_INCLUDE_PATH
 409     X11_Xpm_LIB
 410     X11_Xinput_LIB
 411     X11_Xinput_INCLUDE_PATH
 412     X11_Xft_LIB
 413     X11_Xft_INCLUDE_PATH
 414     X11_Xshape_INCLUDE_PATH
 415     X11_Xv_LIB
 416     X11_Xv_INCLUDE_PATH
 417     X11_XShm_INCLUDE_PATH
 418     X11_ICE_LIB
 419     X11_ICE_INCLUDE_PATH
 420   )
 421   SET(CMAKE_FIND_FRAMEWORK ${CMAKE_FIND_FRAMEWORK_SAVE})
 422 ENDIF (UNIX)
 423
 424 # X11_FIND_REQUIRED_<component> could be checked too