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# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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# file Copyright.txt or https://cmake.org/licensing for details.
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#[=======================================================================[.rst:
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FindOpenSceneGraph
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------------------
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Find OpenSceneGraph (3D graphics application programming interface)
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This module searches for the OpenSceneGraph core "osg" library as well
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as :module:`FindOpenThreads`, and whatever additional ``COMPONENTS``
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(nodekits) that you specify.
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::
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See http://www.openscenegraph.org
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NOTE: To use this module effectively you must either require ``CMake >=
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2.6.3`` with :command:`cmake_minimum_required(VERSION 2.6.3)` or download
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and place :module:`FindOpenThreads`, :module:`Findosg` functions,
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:module:`Findosg` and ``Find<etc>.cmake`` files into your
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:variable:`CMAKE_MODULE_PATH`.
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==================================
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This module accepts the following variables (note mixed case)
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::
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OpenSceneGraph_DEBUG - Enable debugging output
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::
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OpenSceneGraph_MARK_AS_ADVANCED - Mark cache variables as advanced
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automatically
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The following environment variables are also respected for finding the
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OSG and it's various components. :variable:`CMAKE_PREFIX_PATH` can also be
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used for this (see :command:`find_library` CMake documentation).
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``<MODULE>_DIR``
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(where ``MODULE`` is of the form "OSGVOLUME" and there is
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a :module:`FindosgVolume`.cmake` file)
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``OSG_DIR``
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..
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``OSGDIR``
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..
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``OSG_ROOT``
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..
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[CMake 2.8.10]: The CMake variable ``OSG_DIR`` can now be used as well to
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influence detection, instead of needing to specify an environment
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variable.
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This module defines the following output variables:
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::
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OPENSCENEGRAPH_FOUND - Was the OSG and all of the specified components found?
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::
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OPENSCENEGRAPH_VERSION - The version of the OSG which was found
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::
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OPENSCENEGRAPH_INCLUDE_DIRS - Where to find the headers
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::
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OPENSCENEGRAPH_LIBRARIES - The OSG libraries
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================================== Example Usage:
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::
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find_package(OpenSceneGraph 2.0.0 REQUIRED osgDB osgUtil)
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# libOpenThreads & libosg automatically searched
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include_directories(${OPENSCENEGRAPH_INCLUDE_DIRS})
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::
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add_executable(foo foo.cc)
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target_link_libraries(foo ${OPENSCENEGRAPH_LIBRARIES})
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#]=======================================================================]
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#
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# Naming convention:
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# Local variables of the form _osg_foo
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# Input variables of the form OpenSceneGraph_FOO
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# Output variables of the form OPENSCENEGRAPH_FOO
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#
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include(${CMAKE_CURRENT_LIST_DIR}/Findosg_functions.cmake)
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set(_osg_modules_to_process)
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foreach(_osg_component ${OpenSceneGraph_FIND_COMPONENTS})
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list(APPEND _osg_modules_to_process ${_osg_component})
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endforeach()
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list(APPEND _osg_modules_to_process "osg" "OpenThreads")
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list(REMOVE_DUPLICATES _osg_modules_to_process)
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if(OpenSceneGraph_DEBUG)
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message(STATUS "[ FindOpenSceneGraph.cmake:${CMAKE_CURRENT_LIST_LINE} ] "
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"Components = ${_osg_modules_to_process}")
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endif()
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#
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# First we need to find and parse osg/Version
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#
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OSG_FIND_PATH(OSG osg/Version)
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if(OpenSceneGraph_MARK_AS_ADVANCED)
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OSG_MARK_AS_ADVANCED(OSG)
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endif()
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# Try to ascertain the version...
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if(OSG_INCLUDE_DIR)
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if(OpenSceneGraph_DEBUG)
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message(STATUS "[ FindOpenSceneGraph.cmake:${CMAKE_CURRENT_LIST_LINE} ] "
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"Detected OSG_INCLUDE_DIR = ${OSG_INCLUDE_DIR}")
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endif()
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set(_osg_Version_file "${OSG_INCLUDE_DIR}/osg/Version")
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if("${OSG_INCLUDE_DIR}" MATCHES "\\.framework$" AND NOT EXISTS "${_osg_Version_file}")
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set(_osg_Version_file "${OSG_INCLUDE_DIR}/Headers/Version")
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endif()
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if(EXISTS "${_osg_Version_file}")
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file(STRINGS "${_osg_Version_file}" _osg_Version_contents
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REGEX "#define (OSG_VERSION_[A-Z]+|OPENSCENEGRAPH_[A-Z]+_VERSION)[ \t]+[0-9]+")
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else()
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set(_osg_Version_contents "unknown")
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endif()
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string(REGEX MATCH ".*#define OSG_VERSION_MAJOR[ \t]+[0-9]+.*"
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_osg_old_defines "${_osg_Version_contents}")
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string(REGEX MATCH ".*#define OPENSCENEGRAPH_MAJOR_VERSION[ \t]+[0-9]+.*"
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_osg_new_defines "${_osg_Version_contents}")
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if(_osg_old_defines)
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string(REGEX REPLACE ".*#define OSG_VERSION_MAJOR[ \t]+([0-9]+).*"
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"\\1" _osg_VERSION_MAJOR ${_osg_Version_contents})
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string(REGEX REPLACE ".*#define OSG_VERSION_MINOR[ \t]+([0-9]+).*"
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"\\1" _osg_VERSION_MINOR ${_osg_Version_contents})
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string(REGEX REPLACE ".*#define OSG_VERSION_PATCH[ \t]+([0-9]+).*"
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"\\1" _osg_VERSION_PATCH ${_osg_Version_contents})
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elseif(_osg_new_defines)
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string(REGEX REPLACE ".*#define OPENSCENEGRAPH_MAJOR_VERSION[ \t]+([0-9]+).*"
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"\\1" _osg_VERSION_MAJOR ${_osg_Version_contents})
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string(REGEX REPLACE ".*#define OPENSCENEGRAPH_MINOR_VERSION[ \t]+([0-9]+).*"
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"\\1" _osg_VERSION_MINOR ${_osg_Version_contents})
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string(REGEX REPLACE ".*#define OPENSCENEGRAPH_PATCH_VERSION[ \t]+([0-9]+).*"
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"\\1" _osg_VERSION_PATCH ${_osg_Version_contents})
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else()
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message(WARNING "[ FindOpenSceneGraph.cmake:${CMAKE_CURRENT_LIST_LINE} ] "
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"Failed to parse version number, please report this as a bug")
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endif()
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unset(_osg_Version_contents)
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set(OPENSCENEGRAPH_VERSION "${_osg_VERSION_MAJOR}.${_osg_VERSION_MINOR}.${_osg_VERSION_PATCH}"
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CACHE INTERNAL "The version of OSG which was detected")
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if(OpenSceneGraph_DEBUG)
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message(STATUS "[ FindOpenSceneGraph.cmake:${CMAKE_CURRENT_LIST_LINE} ] "
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"Detected version ${OPENSCENEGRAPH_VERSION}")
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endif()
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endif()
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set(_osg_quiet)
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if(OpenSceneGraph_FIND_QUIETLY)
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set(_osg_quiet "QUIET")
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endif()
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#
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# Here we call find_package() on all of the components
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#
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foreach(_osg_module ${_osg_modules_to_process})
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if(OpenSceneGraph_DEBUG)
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message(STATUS "[ FindOpenSceneGraph.cmake:${CMAKE_CURRENT_LIST_LINE} ] "
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"Calling find_package(${_osg_module} ${_osg_required} ${_osg_quiet})")
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endif()
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find_package(${_osg_module} ${_osg_quiet})
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string(TOUPPER ${_osg_module} _osg_module_UC)
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# append to list if module was found OR is required
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if( ${_osg_module_UC}_FOUND OR OpenSceneGraph_FIND_REQUIRED )
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list(APPEND OPENSCENEGRAPH_INCLUDE_DIR ${${_osg_module_UC}_INCLUDE_DIR})
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list(APPEND OPENSCENEGRAPH_LIBRARIES ${${_osg_module_UC}_LIBRARIES})
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endif()
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if(OpenSceneGraph_MARK_AS_ADVANCED)
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OSG_MARK_AS_ADVANCED(${_osg_module})
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endif()
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endforeach()
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if(OPENSCENEGRAPH_INCLUDE_DIR)
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list(REMOVE_DUPLICATES OPENSCENEGRAPH_INCLUDE_DIR)
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endif()
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#
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# Check each module to see if it's found
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#
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set(_osg_component_founds)
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if(OpenSceneGraph_FIND_REQUIRED)
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foreach(_osg_module ${_osg_modules_to_process})
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string(TOUPPER ${_osg_module} _osg_module_UC)
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list(APPEND _osg_component_founds ${_osg_module_UC}_FOUND)
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endforeach()
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endif()
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include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
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FIND_PACKAGE_HANDLE_STANDARD_ARGS(OpenSceneGraph
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REQUIRED_VARS OPENSCENEGRAPH_LIBRARIES OPENSCENEGRAPH_INCLUDE_DIR ${_osg_component_founds}
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VERSION_VAR OPENSCENEGRAPH_VERSION)
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unset(_osg_component_founds)
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set(OPENSCENEGRAPH_INCLUDE_DIRS ${OPENSCENEGRAPH_INCLUDE_DIR})
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