Modules/FindVTK.cmake

   1 # - Find a VTK installation or build tree.
   2 # The following variables are set if VTK is found.  If VTK is not
   3 # found, VTK_FOUND is set to false.
   4 #  VTK_FOUND         - Set to true when VTK is found.
   5 #  VTK_USE_FILE      - CMake file to use VTK.
   6 #  VTK_MAJOR_VERSION - The VTK major version number.
   7 #  VTK_MINOR_VERSION - The VTK minor version number
   8 #                       (odd non-release).
   9 #  VTK_BUILD_VERSION - The VTK patch level
  10 #                       (meaningless for odd minor).
  11 #  VTK_INCLUDE_DIRS  - Include directories for VTK
  12 #  VTK_LIBRARY_DIRS  - Link directories for VTK libraries
  13 #  VTK_KITS          - List of VTK kits, in CAPS
  14 #                      (COMMON,IO,) etc.
  15 #  VTK_LANGUAGES     - List of wrapped languages, in CAPS
  16 #                      (TCL, PYHTON,) etc.
  17 # The following cache entries must be set by the user to locate VTK:
  18 #  VTK_DIR  - The directory containing VTKConfig.cmake.
  19 #             This is either the root of the build tree,
  20 #             or the lib/vtk directory.  This is the
  21 #             only cache entry.
  22 # The following variables are set for backward compatibility and
  23 # should not be used in new code:
  24 #  USE_VTK_FILE - The full path to the UseVTK.cmake file.
  25 #                 This is provided for backward
  26 #                 compatibility.  Use VTK_USE_FILE
  27 #                 instead.
  28 #
  29
  30 # Construct consitent error messages for use below.
  31 SET(VTK_DIR_DESCRIPTION "directory containing VTKConfig.cmake.  This is either the root of the build tree, or PREFIX/lib/vtk for an installation.  For VTK 4.0, this is the location of UseVTK.cmake.  This is either the root of the build tree or PREFIX/include/vtk for an installation.")
  32 SET(VTK_DIR_MESSAGE "VTK not found.  Set the VTK_DIR cmake cache entry to the ${VTK_DIR_DESCRIPTION}")
  33
  34 # Search only if the location is not already known.
  35 IF(NOT VTK_DIR)
  36   # Get the system search path as a list.
  37   IF(UNIX)
  38     STRING(REGEX MATCHALL "[^:]+" VTK_DIR_SEARCH1 "$ENV{PATH}")
  39   ELSE(UNIX)
  40     STRING(REGEX REPLACE "\\\\" "/" VTK_DIR_SEARCH1 "$ENV{PATH}")
  41   ENDIF(UNIX)
  42   STRING(REGEX REPLACE "/;" ";" VTK_DIR_SEARCH2 "${VTK_DIR_SEARCH1}")
  43
  44   # Construct a set of paths relative to the system search path.
  45   SET(VTK_DIR_SEARCH "")
  46   FOREACH(dir ${VTK_DIR_SEARCH2})
  47     SET(VTK_DIR_SEARCH ${VTK_DIR_SEARCH}
  48       ${dir}/../lib/vtk-5.2
  49       ${dir}/../lib/vtk-5.1
  50       ${dir}/../lib/vtk-5.0
  51       ${dir}/../lib/vtk
  52       )
  53   ENDFOREACH(dir)
  54
  55   # Old scripts may set these directories in the CMakeCache.txt file.
  56   # They can tell us where to find VTKConfig.cmake.
  57   SET(VTK_DIR_SEARCH_LEGACY "")
  58   IF(VTK_BINARY_PATH AND USE_BUILT_VTK)
  59     SET(VTK_DIR_SEARCH_LEGACY ${VTK_DIR_SEARCH_LEGACY} ${VTK_BINARY_PATH})
  60   ENDIF(VTK_BINARY_PATH AND USE_BUILT_VTK)
  61   IF(VTK_INSTALL_PATH AND USE_INSTALLED_VTK)
  62     SET(VTK_DIR_SEARCH_LEGACY ${VTK_DIR_SEARCH_LEGACY}
  63         ${VTK_INSTALL_PATH}/lib/vtk)
  64   ENDIF(VTK_INSTALL_PATH AND USE_INSTALLED_VTK)
  65
  66   #
  67   # Look for an installation or build tree.
  68   #
  69   FIND_PATH(VTK_DIR UseVTK.cmake
  70     # Support legacy cache files.
  71     ${VTK_DIR_SEARCH_LEGACY}
  72
  73     # Look for an environment variable VTK_DIR.
  74     $ENV{VTK_DIR}
  75
  76     # Look in places relative to the system executable search path.
  77     ${VTK_DIR_SEARCH}
  78
  79     # Look in standard UNIX install locations.
  80     /usr/local/lib/vtk
  81     /usr/lib/vtk
  82
  83     # Read from the CMakeSetup registry entries.  It is likely that
  84     # VTK will have been recently built.
  85     [HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild1]
  86     [HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild2]
  87     [HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild3]
  88     [HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild4]
  89     [HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild5]
  90     [HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild6]
  91     [HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild7]
  92     [HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild8]
  93     [HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild9]
  94     [HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild10]
  95
  96     # Help the user find it if we cannot.
  97     DOC "The ${VTK_DIR_DESCRIPTION}"
  98   )
  99 ENDIF(NOT VTK_DIR)
 100
 101 # If VTK was found, load the configuration file to get the rest of the
 102 # settings.
 103 IF(VTK_DIR)
 104   # Make sure the VTKConfig.cmake file exists in the directory provided.
 105   IF(EXISTS ${VTK_DIR}/VTKConfig.cmake)
 106
 107     # We found VTK.  Load the settings.
 108     SET(VTK_FOUND 1)
 109     INCLUDE(${VTK_DIR}/VTKConfig.cmake)
 110
 111   ELSE(EXISTS ${VTK_DIR}/VTKConfig.cmake)
 112     IF(EXISTS ${VTK_DIR}/UseVTK.cmake)
 113       # We found VTK 4.0 (UseVTK.cmake exists, but not VTKConfig.cmake).
 114       SET(VTK_FOUND 1)
 115       # Load settings for VTK 4.0.
 116       INCLUDE(UseVTKConfig40)
 117     ELSE(EXISTS ${VTK_DIR}/UseVTK.cmake)
 118       # We did not find VTK.
 119       SET(VTK_FOUND 0)
 120     ENDIF(EXISTS ${VTK_DIR}/UseVTK.cmake)
 121   ENDIF(EXISTS ${VTK_DIR}/VTKConfig.cmake)
 122 ELSE(VTK_DIR)
 123   # We did not find VTK.
 124   SET(VTK_FOUND 0)
 125 ENDIF(VTK_DIR)
 126
 127 #-----------------------------------------------------------------------------
 128 IF(VTK_FOUND)
 129   # Set USE_VTK_FILE for backward-compatability.
 130   SET(USE_VTK_FILE ${VTK_USE_FILE})
 131 ELSE(VTK_FOUND)
 132   # VTK not found, explain to the user how to specify its location.
 133   IF(VTK_FIND_REQUIRED)
 134     MESSAGE(FATAL_ERROR ${VTK_DIR_MESSAGE})
 135   ELSE(VTK_FIND_REQUIRED)
 136     IF(NOT VTK_FIND_QUIETLY)
 137       MESSAGE(STATUS ${VTK_DIR_MESSAGE})
 138     ENDIF(NOT VTK_FIND_QUIETLY)
 139   ENDIF(VTK_FIND_REQUIRED)
 140 ENDIF(VTK_FOUND)