Modules/FindITK.cmake

   1 # - Find an ITK installation or build tree.
   2
   3 # When ITK is found, the ITKConfig.cmake file is sourced to setup the
   4 # location and configuration of ITK.  Please read this file, or
   5 # ITKConfig.cmake.in from the ITK source tree for the full list of
   6 # definitions.  Of particular interest is ITK_USE_FILE, a CMake source file
   7 # that can be included to set the include directories, library directories,
   8 # and preprocessor macros.  In addition to the variables read from
   9 # ITKConfig.cmake, this find module also defines
  10 #  ITK_DIR  - The directory containing ITKConfig.cmake.
  11 #             This is either the root of the build tree,
  12 #             or the lib/InsightToolkit directory.
  13 #             This is the only cache entry.
  14 #
  15 #  ITK_FOUND - Whether ITK was found.  If this is true,
  16 #              ITK_DIR is okay.
  17 #
  18 #  USE_ITK_FILE - The full path to the UseITK.cmake file.
  19 #                 This is provided for backward
  20 #                 compatability.  Use ITK_USE_FILE
  21 #                 instead.
  22
  23
  24 SET(ITK_DIR_STRING "directory containing ITKConfig.cmake.  This is either the root of the build tree, or PREFIX/lib/InsightToolkit for an installation.")
  25
  26 # Search only if the location is not already known.
  27 IF(NOT ITK_DIR)
  28   # Get the system search path as a list.
  29   IF(UNIX)
  30     STRING(REGEX MATCHALL "[^:]+" ITK_DIR_SEARCH1 "$ENV{PATH}")
  31   ELSE(UNIX)
  32     STRING(REGEX REPLACE "\\\\" "/" ITK_DIR_SEARCH1 "$ENV{PATH}")
  33   ENDIF(UNIX)
  34   STRING(REGEX REPLACE "/;" ";" ITK_DIR_SEARCH2 ${ITK_DIR_SEARCH1})
  35
  36   # Construct a set of paths relative to the system search path.
  37   SET(ITK_DIR_SEARCH "")
  38   FOREACH(dir ${ITK_DIR_SEARCH2})
  39     SET(ITK_DIR_SEARCH ${ITK_DIR_SEARCH} "${dir}/../lib/InsightToolkit")
  40   ENDFOREACH(dir)
  41
  42   #
  43   # Look for an installation or build tree.
  44   #
  45   FIND_PATH(ITK_DIR ITKConfig.cmake
  46     # Look for an environment variable ITK_DIR.
  47     $ENV{ITK_DIR}
  48
  49     # Look in places relative to the system executable search path.
  50     ${ITK_DIR_SEARCH}
  51
  52     # Look in standard UNIX install locations.
  53     /usr/local/lib/InsightToolkit
  54     /usr/lib/InsightToolkit
  55
  56     # Read from the CMakeSetup registry entries.  It is likely that
  57     # ITK will have been recently built.
  58     [HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild1]
  59     [HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild2]
  60     [HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild3]
  61     [HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild4]
  62     [HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild5]
  63     [HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild6]
  64     [HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild7]
  65     [HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild8]
  66     [HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild9]
  67     [HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild10]
  68
  69     # Help the user find it if we cannot.
  70     DOC "The ${ITK_DIR_STRING}"
  71   )
  72 ENDIF(NOT ITK_DIR)
  73
  74 # If ITK was found, load the configuration file to get the rest of the
  75 # settings.
  76 IF(ITK_DIR)
  77   SET(ITK_FOUND 1)
  78   INCLUDE(${ITK_DIR}/ITKConfig.cmake)
  79
  80   # Set USE_ITK_FILE for backward-compatability.
  81   SET(USE_ITK_FILE ${ITK_USE_FILE})
  82 ELSE(ITK_DIR)
  83   SET(ITK_FOUND 0)
  84   IF(ITK_FIND_REQUIRED)
  85     MESSAGE(FATAL_ERROR "Please set ITK_DIR to the ${ITK_DIR_STRING}")
  86   ENDIF(ITK_FIND_REQUIRED)
  87 ENDIF(ITK_DIR)