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#.rst:
# FindVTK
# -------
#
# Find a VTK installation or build tree.
#
# The following variables are set if VTK is found. If VTK is not found,
# VTK_FOUND is set to false.
#
# ::
#
# VTK_FOUND - Set to true when VTK is found.
# VTK_USE_FILE - CMake file to use VTK.
# VTK_MAJOR_VERSION - The VTK major version number.
# VTK_MINOR_VERSION - The VTK minor version number
# (odd non-release).
# VTK_BUILD_VERSION - The VTK patch level
# (meaningless for odd minor).
# VTK_INCLUDE_DIRS - Include directories for VTK
# VTK_LIBRARY_DIRS - Link directories for VTK libraries
# VTK_KITS - List of VTK kits, in CAPS
# (COMMON,IO,) etc.
# VTK_LANGUAGES - List of wrapped languages, in CAPS
# (TCL, PYHTON,) etc.
#
# The following cache entries must be set by the user to locate VTK:
#
# ::
#
# VTK_DIR - The directory containing VTKConfig.cmake.
# This is either the root of the build tree,
# or the lib/vtk directory. This is the
# only cache entry.
#
# The following variables are set for backward compatibility and should
# not be used in new code:
#
# ::
#
# USE_VTK_FILE - The full path to the UseVTK.cmake file.
# This is provided for backward
# compatibility. Use VTK_USE_FILE
# instead.
#=============================================================================
# Copyright 2001-2009 Kitware, Inc.
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
#
# This software is distributed WITHOUT ANY WARRANTY; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the License for more information.
#=============================================================================
# (To distribute this file outside of CMake, substitute the full
# License text for the above reference.)
# Assume not found.
set(VTK_FOUND 0)
# VTK 4.0 did not provide VTKConfig.cmake.
if("${VTK_FIND_VERSION}" VERSION_LESS 4.1)
set(_VTK_40_ALLOW 1)
if(VTK_FIND_VERSION)
set(_VTK_40_ONLY 1)
endif()
endif()
# Construct consistent error messages for use below.
set(VTK_DIR_DESCRIPTION "directory containing VTKConfig.cmake. This is either the root of the build tree, or PREFIX/lib/vtk for an installation.")
if(_VTK_40_ALLOW)
set(VTK_DIR_DESCRIPTION "${VTK_DIR_DESCRIPTION} 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.")
endif()
set(VTK_DIR_MESSAGE "VTK not found. Set the VTK_DIR cmake cache entry to the ${VTK_DIR_DESCRIPTION}")
# Check whether VTK 4.0 has already been found.
if(_VTK_40_ALLOW AND VTK_DIR)
if(EXISTS ${VTK_DIR}/UseVTK.cmake AND NOT EXISTS ${VTK_DIR}/VTKConfig.cmake)
set(VTK_FOUND 1)
include(${CMAKE_CURRENT_LIST_DIR}/UseVTKConfig40.cmake) # No VTKConfig; load VTK 4.0 settings.
endif()
endif()
# Use the Config mode of the find_package() command to find VTKConfig.
# If this succeeds (possibly because VTK_DIR is already set), the
# command will have already loaded VTKConfig.cmake and set VTK_FOUND.
if(NOT _VTK_40_ONLY AND NOT VTK_FOUND)
find_package(VTK QUIET NO_MODULE)
endif()
# Special search for VTK 4.0.
if(_VTK_40_ALLOW AND NOT VTK_DIR)
# Old scripts may set these directories in the CMakeCache.txt file.
# They can tell us where to find VTKConfig.cmake.
set(VTK_DIR_SEARCH_LEGACY "")
if(VTK_BINARY_PATH AND USE_BUILT_VTK)
set(VTK_DIR_SEARCH_LEGACY ${VTK_DIR_SEARCH_LEGACY} ${VTK_BINARY_PATH})
endif()
if(VTK_INSTALL_PATH AND USE_INSTALLED_VTK)
set(VTK_DIR_SEARCH_LEGACY ${VTK_DIR_SEARCH_LEGACY}
${VTK_INSTALL_PATH}/lib/vtk)
endif()
# Look for UseVTK.cmake in build trees or under <prefix>/include/vtk.
find_path(VTK_DIR
NAMES UseVTK.cmake
PATH_SUFFIXES vtk-4.0 vtk
HINTS ENV VTK_DIR
PATHS
# Support legacy cache files.
${VTK_DIR_SEARCH_LEGACY}
# Read from the CMakeSetup registry entries. It is likely that
# VTK 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 ${VTK_DIR_DESCRIPTION}"
)
if(VTK_DIR)
if(EXISTS ${VTK_DIR}/UseVTK.cmake AND NOT EXISTS ${VTK_DIR}/VTKConfig.cmake)
set(VTK_FOUND 1)
include(${CMAKE_CURRENT_LIST_DIR}/UseVTKConfig40.cmake) # No VTKConfig; load VTK 4.0 settings.
else()
# We found the wrong version. Pretend we did not find it.
set(VTK_DIR "VTK_DIR-NOTFOUND" CACHE PATH "The ${VTK_DIR_DESCRIPTION}" FORCE)
endif()
endif()
endif()
#-----------------------------------------------------------------------------
if(VTK_FOUND)
# Set USE_VTK_FILE for backward-compatibility.
set(USE_VTK_FILE ${VTK_USE_FILE})
else()
# VTK not found, explain to the user how to specify its location.
if(VTK_FIND_REQUIRED)
message(FATAL_ERROR ${VTK_DIR_MESSAGE})
else()
if(NOT VTK_FIND_QUIETLY)
message(STATUS ${VTK_DIR_MESSAGE})
endif()
endif()
endif()
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