Modernize FindITK module (#11494)
Use the Config mode of find_package to search for ITKConfig. This makes
FindITK a thin-wrapper around a standard find_package, bringing benefits
like searching lib64 paths when appropriate. This does for FindITK what
commit 2c1a01dc
(Modernize FindVTK module, 2009-10-07) did for FindVTK.
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@ -21,7 +21,7 @@
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# instead.
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#=============================================================================
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# Copyright 2001-2009 Kitware, Inc.
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# Copyright 2001-2010 Kitware, Inc.
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#
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# Distributed under the OSI-approved BSD License (the "License");
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# see accompanying file Copyright.txt for details.
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@ -33,67 +33,23 @@
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# (To distribute this file outside of CMake, substitute the full
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# License text for the above reference.)
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SET(ITK_DIR_STRING "directory containing ITKConfig.cmake. This is either the root of the build tree, or PREFIX/lib/InsightToolkit for an installation.")
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# Use the Config mode of the find_package() command to find ITKConfig.
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# If this succeeds (possibly because ITK_DIR is already set), the
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# command will have already loaded ITKConfig.cmake and set ITK_FOUND.
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IF(NOT ITK_FOUND)
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FIND_PACKAGE(ITK QUIET NO_MODULE
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NAMES ITK InsightToolkit
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CONFIGS ITKConfig.cmake
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)
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ENDIF()
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# Search only if the location is not already known.
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IF(NOT ITK_DIR)
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# Get the system search path as a list.
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IF(UNIX)
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STRING(REGEX MATCHALL "[^:]+" ITK_DIR_SEARCH1 "$ENV{PATH}")
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ELSE(UNIX)
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STRING(REGEX REPLACE "\\\\" "/" ITK_DIR_SEARCH1 "$ENV{PATH}")
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ENDIF(UNIX)
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STRING(REGEX REPLACE "/;" ";" ITK_DIR_SEARCH2 ${ITK_DIR_SEARCH1})
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# Construct a set of paths relative to the system search path.
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SET(ITK_DIR_SEARCH "")
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FOREACH(dir ${ITK_DIR_SEARCH2})
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SET(ITK_DIR_SEARCH ${ITK_DIR_SEARCH} "${dir}/../lib/InsightToolkit")
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ENDFOREACH(dir)
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#
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# Look for an installation or build tree.
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#
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FIND_PATH(ITK_DIR ITKConfig.cmake
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# Look for an environment variable ITK_DIR.
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$ENV{ITK_DIR}
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# Look in places relative to the system executable search path.
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${ITK_DIR_SEARCH}
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# Look in standard UNIX install locations.
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/usr/local/lib/InsightToolkit
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/usr/lib/InsightToolkit
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# Read from the CMakeSetup registry entries. It is likely that
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# ITK will have been recently built.
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[HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild1]
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[HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild2]
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[HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild3]
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[HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild4]
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[HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild5]
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[HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild6]
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[HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild7]
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[HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild8]
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[HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild9]
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[HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild10]
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# Help the user find it if we cannot.
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DOC "The ${ITK_DIR_STRING}"
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)
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ENDIF(NOT ITK_DIR)
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# If ITK was found, load the configuration file to get the rest of the
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# settings.
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IF(ITK_DIR)
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SET(ITK_FOUND 1)
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INCLUDE(${ITK_DIR}/ITKConfig.cmake)
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SET(ITK_DIR_MESSAGE "Please set ITK_DIR to the directory containing ITKConfig.cmake. This is either the root of the build tree, or PREFIX/lib/InsightToolkit for an installation.")
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IF(ITK_FOUND)
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# Set USE_ITK_FILE for backward-compatability.
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SET(USE_ITK_FILE ${ITK_USE_FILE})
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ELSE(ITK_DIR)
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SET(ITK_FOUND 0)
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IF(ITK_FIND_REQUIRED)
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MESSAGE(FATAL_ERROR "Please set ITK_DIR to the ${ITK_DIR_STRING}")
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ENDIF(ITK_FIND_REQUIRED)
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ENDIF(ITK_DIR)
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ELSEIF(ITK_FIND_REQUIRED)
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MESSAGE(FATAL_ERROR ${ITK_DIR_MESSAGE})
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ELSEIF(NOT ITK_FIND_QUIETLY)
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MESSAGE(STATUS ${ITK_DIR_MESSAGE})
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ENDIF()
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