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Modernize FindITK module (#11494)

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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.
This commit is contained in:
Brad King 2010-11-22 13:52:58 -05:00
parent a0739ac5ab
commit 38b0a84eea
1 changed files with 17 additions and 61 deletions
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78
Modules/FindITK.cmake
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@ -21,7 +21,7 @@
# instead.
#=============================================================================
# Copyright 2001-2009 Kitware, Inc.
# Copyright 2001-2010 Kitware, Inc.
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
@ -33,67 +33,23 @@
# (To distribute this file outside of CMake, substitute the full
# License text for the above reference.)
SET(ITK_DIR_STRING "directory containing ITKConfig.cmake. This is either the root of the build tree, or PREFIX/lib/InsightToolkit for an installation.")
# Use the Config mode of the find_package() command to find ITKConfig.
# If this succeeds (possibly because ITK_DIR is already set), the
# command will have already loaded ITKConfig.cmake and set ITK_FOUND.
IF(NOT ITK_FOUND)
FIND_PACKAGE(ITK QUIET NO_MODULE
NAMES ITK InsightToolkit
CONFIGS ITKConfig.cmake
)
ENDIF()
# Search only if the location is not already known.
IF(NOT ITK_DIR)
# Get the system search path as a list.
IF(UNIX)
STRING(REGEX MATCHALL "[^:]+" ITK_DIR_SEARCH1 "$ENV{PATH}")
ELSE(UNIX)
STRING(REGEX REPLACE "\\\\" "/" ITK_DIR_SEARCH1 "$ENV{PATH}")
ENDIF(UNIX)
STRING(REGEX REPLACE "/;" ";" ITK_DIR_SEARCH2 ${ITK_DIR_SEARCH1})
# Construct a set of paths relative to the system search path.
SET(ITK_DIR_SEARCH "")
FOREACH(dir ${ITK_DIR_SEARCH2})
SET(ITK_DIR_SEARCH ${ITK_DIR_SEARCH} "${dir}/../lib/InsightToolkit")
ENDFOREACH(dir)
#
# Look for an installation or build tree.
#
FIND_PATH(ITK_DIR ITKConfig.cmake
# Look for an environment variable ITK_DIR.
$ENV{ITK_DIR}
# Look in places relative to the system executable search path.
${ITK_DIR_SEARCH}
# Look in standard UNIX install locations.
/usr/local/lib/InsightToolkit
/usr/lib/InsightToolkit
# Read from the CMakeSetup registry entries. It is likely that
# ITK will have been recently built.
[HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild1]
[HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild2]
[HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild3]
[HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild4]
[HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild5]
[HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild6]
[HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild7]
[HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild8]
[HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild9]
[HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild10]
# Help the user find it if we cannot.
DOC "The ${ITK_DIR_STRING}"
)
ENDIF(NOT ITK_DIR)
# If ITK was found, load the configuration file to get the rest of the
# settings.
IF(ITK_DIR)
SET(ITK_FOUND 1)
INCLUDE(${ITK_DIR}/ITKConfig.cmake)
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.")
IF(ITK_FOUND)
# Set USE_ITK_FILE for backward-compatability.
SET(USE_ITK_FILE ${ITK_USE_FILE})
ELSE(ITK_DIR)
SET(ITK_FOUND 0)
IF(ITK_FIND_REQUIRED)
MESSAGE(FATAL_ERROR "Please set ITK_DIR to the ${ITK_DIR_STRING}")
ENDIF(ITK_FIND_REQUIRED)
ENDIF(ITK_DIR)
ELSEIF(ITK_FIND_REQUIRED)
MESSAGE(FATAL_ERROR ${ITK_DIR_MESSAGE})
ELSEIF(NOT ITK_FIND_QUIETLY)
MESSAGE(STATUS ${ITK_DIR_MESSAGE})
ENDIF()