berrux-dev
d327c66c46
Migrate BuildingViewer (16 files: DDS members, m_logger inits, QOpenGLWidget); gui:3:bld.info + gui:3:bdv now load
118 lines
4.4 KiB
CMake
118 lines
4.4 KiB
CMake
# FindOpenSceneGraph.cmake
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#
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# Locate an installed OpenSceneGraph and expose the module variables that the
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# Legatus BuildingViewer stack links against:
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# OSG_INCLUDE_DIR, OPENSCENEGRAPH_INCLUDE_DIRS
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# OPENSCENEGRAPH_LIBRARIES (the OSG component libs that were found)
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# OPENTHREADS_LIBRARIES
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# OPENSCENEGRAPH_FOUND, OPENSCENEGRAPH_VERSION
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#
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# NOTE (Qt6-migration port): OSG 3.4.1 ships no FindOpenSceneGraph.cmake and
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# installs no OpenSceneGraphConfig.cmake, so this module is supplied to close
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# the bld/OSG floor. It finds the 3.4.1 build installed under CMAKE_PREFIX_PATH
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# (the component libs live under <prefix>/lib64) and honours the requested
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# components -- including the ported Qt6 osgQt (see the .osg-port notes).
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#
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# Mirrors the classic OSG Find-module variable names that BuildingViewer/Common
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# links: ${OSG_INCLUDE_DIR}, ${OPENSCENEGRAPH_LIBRARIES}, ${OPENTHREADS_LIBRARIES}.
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SET(OSG_SEARCH_PREFIXES ${CMAKE_PREFIX_PATH} /usr/local /usr)
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# Include dir: locate the osg/Version header.
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FIND_PATH(OSG_INCLUDE_DIR
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NAMES osg/Version
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PATHS ${OSG_SEARCH_PREFIXES}
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PATH_SUFFIXES include)
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# OpenThreads support library (distinct SONAME: libOpenThreads.so.20 for 3.4.1).
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FIND_LIBRARY(OPENTHREADS_LIBRARY
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NAMES OpenThreads
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PATHS ${OSG_SEARCH_PREFIXES}
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PATH_SUFFIXES lib lib64)
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# OSG component libraries. Find each that exists and collect them so
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# OPENSCENEGRAPH_LIBRARIES covers the transitive dependency set the BgViewer
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# SDK and BuildingViewerCommon link (the SDK's NEEDED entries require
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# osg/DB/GA/Qt/Shadow/Sim/Text/Util/Viewer/Particle/Manipulator/Animation).
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SET(OSG_COMPONENT_LIBS
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osg
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osgDB
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osgUtil
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osgGA
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osgText
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osgViewer
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osgAnimation
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osgManipulator
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osgParticle
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osgShadow
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osgSim
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osgWidget
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osgQt)
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SET(OPENSCENEGRAPH_LIBRARIES "")
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FOREACH(_osg_lib ${OSG_COMPONENT_LIBS})
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FIND_LIBRARY(OSG_LIBRARY_${_osg_lib}
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NAMES ${_osg_lib}
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PATHS ${OSG_SEARCH_PREFIXES}
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PATH_SUFFIXES lib lib64)
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IF(OSG_LIBRARY_${_osg_lib})
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LIST(APPEND OPENSCENEGRAPH_LIBRARIES ${OSG_LIBRARY_${_osg_lib}})
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SET(OPENSCENEGRAPH_${_osg_lib}_FOUND TRUE)
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ELSE()
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SET(OPENSCENEGRAPH_${_osg_lib}_FOUND FALSE)
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ENDIF()
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ENDFOREACH()
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# Core libs are mandatory for the package to count as found.
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SET(_osg_core_ok TRUE)
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IF(NOT OSG_LIBRARY_osg OR NOT OSG_LIBRARY_osgDB OR NOT OSG_LIBRARY_osgUtil
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OR NOT OSG_LIBRARY_osgGA OR NOT OSG_LIBRARY_osgViewer OR NOT OPENTHREADS_LIBRARY)
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SET(_osg_core_ok FALSE)
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ENDIF()
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# Any requested component that is missing makes the package not found.
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FOREACH(_osg_req ${OpenSceneGraph_FIND_COMPONENTS})
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IF(NOT OSG_LIBRARY_${_osg_req})
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SET(_osg_core_ok FALSE)
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MESSAGE(STATUS "OpenSceneGraph: required component '${_osg_req}' not found")
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ENDIF()
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ENDFOREACH()
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# Version string from the installed header's OPENSCENEGRAPH_*_VERSION macros.
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IF(OSG_INCLUDE_DIR)
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FILE(READ "${OSG_INCLUDE_DIR}/osg/Version" _osg_version_header)
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STRING(REGEX MATCH "#define[ \t]+OPENSCENEGRAPH_MAJOR_VERSION[ \t]+[0-9]+"
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_osg_m "${_osg_version_header}")
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STRING(REGEX MATCH "#define[ \t]+OPENSCENEGRAPH_MINOR_VERSION[ \t]+[0-9]+"
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_osg_n "${_osg_version_header}")
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STRING(REGEX MATCH "#define[ \t]+OPENSCENEGRAPH_PATCH_VERSION[ \t]+[0-9]+"
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_osg_p "${_osg_version_header}")
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STRING(REGEX REPLACE "[^0-9]" "" _osg_major "${_osg_m}")
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STRING(REGEX REPLACE "[^0-9]" "" _osg_minor "${_osg_n}")
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STRING(REGEX REPLACE "[^0-9]" "" _osg_patch "${_osg_p}")
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IF(_osg_major AND _osg_minor AND _osg_patch)
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SET(OPENSCENEGRAPH_VERSION "${_osg_major}.${_osg_minor}.${_osg_patch}")
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ENDIF()
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ENDIF()
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IF(OSG_INCLUDE_DIR AND _osg_core_ok)
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SET(OPENSCENEGRAPH_FOUND TRUE)
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SET(OPENSCENEGRAPH_INCLUDE_DIRS ${OSG_INCLUDE_DIR})
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SET(OPENTHREADS_LIBRARIES ${OPENTHREADS_LIBRARY})
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ELSE()
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SET(OPENSCENEGRAPH_FOUND FALSE)
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ENDIF()
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INCLUDE(FindPackageHandleStandardArgs)
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FIND_PACKAGE_HANDLE_STANDARD_ARGS(OpenSceneGraph
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FOUND_VAR OPENSCENEGRAPH_FOUND
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VERSION_VAR OPENSCENEGRAPH_VERSION
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REQUIRED_VARS OPENSCENEGRAPH_INCLUDE_DIRS OPENSCENEGRAPH_LIBRARIES OPENTHREADS_LIBRARIES)
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MARK_AS_ADVANCED(
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OSG_INCLUDE_DIR OPENTHREADS_LIBRARY
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OSG_LIBRARY_osg OSG_LIBRARY_osgDB OSG_LIBRARY_osgUtil OSG_LIBRARY_osgGA
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OSG_LIBRARY_osgText OSG_LIBRARY_osgViewer OSG_LIBRARY_osgAnimation
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OSG_LIBRARY_osgManipulator OSG_LIBRARY_osgParticle OSG_LIBRARY_osgShadow
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OSG_LIBRARY_osgSim OSG_LIBRARY_osgWidget OSG_LIBRARY_osgQt)
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