CMake/Modules/FindVTK.cmake

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#
# 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.
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#
# VTK_FOUND - Set to true when VTK is found.
# VTK_USE_FILE - CMake source file to setup a project to use VTK.
# VTK_MAJOR_VERSION - The VTK major version number.
# VTK_MINOR_VERSION - The VTK minor version number (odd for non-release).
# VTK_BUILD_VERSION - The VTK patch level (meaningless for odd minor).
# VTK_INCLUDE_DIRS - Include directories for VTK headers.
# VTK_LIBRARY_DIRS - Link directories for VTK libraries.
# VTK_KITS - List of VTK kits, in all CAPS (COMMON, IO, ...).
# VTK_LANGUAGES - List of wrapped languages, in all CAPS (TCL, ...).
#
# 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.
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#
# The following variables are set for backward compatability and
# should not be used in new code:
#
# 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 the VTK_DIR cmake cache entry 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 for an environment variable VTK_DIR.
$ENV{VTK_DIR}
# 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 ${VTK_DIR}/UseVTK.cmake)
# We found VTK 4.0 (UseVTK.cmake exists, but not VTKConfig.cmake).
SET(VTK_FOUND 1)
# Load settings for VTK 4.0.
INCLUDE(${CMAKE_ROOT}/Modules/UseVTKConfig40.cmake)
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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(FATAL_ERROR ${VTK_DIR_MESSAGE})
ELSE(NOT VTK_FIND_QUIETLY)
IF(VTK_FIND_REQUIRED)
MESSAGE(FATAL_ERROR ${VTK_DIR_MESSAGE})
ENDIF(VTK_FIND_REQUIRED)
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ENDIF(NOT VTK_FIND_QUIETLY)
ENDIF(VTK_FOUND)