CMake/Modules/FindVTK.cmake

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#
# Find a VTK installation or build tree.
#
# When VTK is found, the VTKConfig.cmake file is sourced to setup the
# location and configuration of VTK. Please read this file, or
# VTKConfig.cmake.in from the VTK source tree for the full list of
# definitions. Of particular interest is
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#
# VTK_USE_FILE - A CMake source file that can be included
# to set the include directories, library
# directories, and preprocessor macros.
#
# In addition to the variables read from VTKConfig.cmake, this find
# module also defines
#
# 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.
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#
# VTK_FOUND - Whether VTK was found. If this is true, VTK_DIR is okay.
#
# USE_VTK_FILE - The full path to the UseVTK.cmake file. This is provided
# for backward compatability. Use VTK_USE_FILE instead.
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#
# Construct consitent error messages for use below.
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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.")
SET(VTK_DIR_MESSAGE "VTK not found. Set VTK_DIR to the ${VTK_DIR_DESCRIPTION}")
# Search only if the location is not already known.
IF(NOT VTK_DIR)
# Get the system search path as a list.
IF(UNIX)
STRING(REGEX MATCHALL "[^:]+" VTK_DIR_SEARCH1 $ENV{PATH})
ELSE(UNIX)
STRING(REGEX REPLACE "\\\\" "/" VTK_DIR_SEARCH1 $ENV{PATH})
ENDIF(UNIX)
STRING(REGEX REPLACE "/;" ";" VTK_DIR_SEARCH2 ${VTK_DIR_SEARCH1})
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# Construct a set of paths relative to the system search path.
SET(VTK_DIR_SEARCH "")
FOREACH(dir ${VTK_DIR_SEARCH2})
SET(VTK_DIR_SEARCH ${VTK_DIR_SEARCH} "${dir}/../lib/vtk")
ENDFOREACH(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(VTK_BINARY_PATH AND USE_BUILT_VTK)
IF(VTK_INSTALL_PATH AND USE_INSTALLED_VTK)
SET(VTK_DIR_SEARCH_LEGACY ${VTK_DIR_SEARCH_LEGACY}
${VTK_INSTALL_PATH}/lib/vtk)
ENDIF(VTK_INSTALL_PATH AND USE_INSTALLED_VTK)
#
# Look for an installation or build tree.
#
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FIND_PATH(VTK_DIR UseVTK.cmake
# Support legacy cache files.
${VTK_DIR_SEARCH_LEGACY}
# Look in places relative to the system executable search path.
${VTK_DIR_SEARCH}
# Look in standard UNIX install locations.
/usr/local/lib/vtk
/usr/lib/vtk
# 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}"
)
ENDIF(NOT VTK_DIR)
# If VTK was found, load the configuration file to get the rest of the
# settings.
IF(VTK_DIR)
# Make sure the VTKConfig.cmake file exists in the directory provided.
IF(EXISTS ${VTK_DIR}/VTKConfig.cmake)
# We found VTK. Load the settings.
SET(VTK_FOUND 1)
INCLUDE(${VTK_DIR}/VTKConfig.cmake)
ELSE(EXISTS ${VTK_DIR}/VTKConfig.cmake)
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IF(EXISTS ${VTK_DIR}/UseVTK.cmake)
# We found VTK 4.0 (UseVTK.cmake exists, but not VTKConfig.cmake).
SET(VTK_FOUND 1)
SET(VTK_USE_FILE ${VTK_DIR}/UseVTK.cmake)
# Hard-code the version number since it isn't provided by VTK 4.0.
SET(VTK_MAJOR_VERSION 4)
SET(VTK_MINOR_VERSION 0)
SET(VTK_BUILD_VERSION 2)
# Make sure old UseVTK.cmake will work.
IF(EXISTS ${VTK_DIR}/Common)
# This is a VTK 4.0 build tree.
SET(USE_BUILT_VTK 1)
SET(VTK_BINARY_PATH ${VTK_DIR})
ELSE(EXISTS ${VTK_DIR}/Common)
# This is a VTK 4.0 install tree.
SET(USE_INSTALLED_VTK 1)
SET(VTK_INSTALL_PATH ${VTK_DIR}/../..)
ENDIF(EXISTS ${VTK_DIR}/Common)
ELSE(EXISTS ${VTK_DIR}/UseVTK.cmake)
# We did not find VTK.
SET(VTK_FOUND 0)
ENDIF(EXISTS ${VTK_DIR}/UseVTK.cmake)
ENDIF(EXISTS ${VTK_DIR}/VTKConfig.cmake)
ELSE(VTK_DIR)
# We did not find VTK.
SET(VTK_FOUND 0)
ENDIF(VTK_DIR)
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IF(VTK_FOUND)
# Set USE_VTK_FILE for backward-compatability.
SET(USE_VTK_FILE ${VTK_USE_FILE})
ELSE(VTK_FOUND)
# VTK not found, explain to the user how to specify its location.
IF(NOT VTK_FIND_QUIETLY)
MESSAGE(${VTK_DIR_MESSAGE})
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ENDIF(NOT VTK_FIND_QUIETLY)
ENDIF(VTK_FOUND)