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https://github.com/IfcOpenShell/IfcOpenShell.git
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Bruno Postle
ceeca752ea
OpenCASCADE may be built with VTK support. Try to find VTK first to avoid CMake errors when OpenCASCADE's config references VTK targets.
143 lines
5.2 KiB
CMake
143 lines
5.2 KiB
CMake
#
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# Input variables:
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# - `OCC_INCLUDE_DIR`
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# - `OCC_LIBRARY_DIR`
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# If input variables are not specified, try to find OpenCASCADE config.
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# Input variables could also be provided as environment variables.
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#
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# Output variables
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# - `OpenCASCADE_LIBRARIES`
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#
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UNIFY_ENVVARS_AND_CACHE(OCC_INCLUDE_DIR)
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UNIFY_ENVVARS_AND_CACHE(OCC_LIBRARY_DIR)
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# OpenCASCADE may be built with VTK support. Try to find VTK first to avoid
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# CMake errors when OpenCASCADE's config references VTK targets.
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find_package(VTK QUIET)
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if(OCC_INCLUDE_DIR)
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set(OCC_INCLUDE_DIR ${OCC_INCLUDE_DIR} CACHE FILEPATH "Open CASCADE header files")
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message(STATUS "Looking for Open CASCADE include files in: ${OCC_INCLUDE_DIR}")
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endif()
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if(OCC_LIBRARY_DIR)
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set(OCC_LIBRARY_DIR ${OCC_LIBRARY_DIR} CACHE FILEPATH "Open CASCADE library files")
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message(STATUS "Looking for Open CASCADE library files in: ${OCC_LIBRARY_DIR}")
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endif()
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if(NOT OCC_INCLUDE_DIR AND NOT OCC_LIBRARY_DIR)
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# OCE is not supported for find_package, because it's using a different name (`oce`)
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# and also has an odd directory structure (install/lib/oce-0.18/*.cmake).
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# find_package creates variables:
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# - `OpenCASCADE_INCLUDE_DIR`
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# - `OpenCASCADE_LIBRARIES`
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find_package(OpenCASCADE CONFIG REQUIRED)
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return()
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endif()
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# No specific paths specified, try to find package.
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if(OCC_INCLUDE_DIR AND OCC_LIBRARY_DIR)
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message(
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STATUS
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"Using provided OCC_INCLUDE_DIR ('${OCC_INCLUDE_DIR}') "
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"and OCC_LIBRARY_DIR ('${OCC_LIBRARY_DIR}')."
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)
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# Parse OCC_VERSION_STRING.
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file(STRINGS ${OCC_INCLUDE_DIR}/Standard_Version.hxx OCC_MAJOR
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REGEX "#define OCC_VERSION_MAJOR.*"
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)
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string(REGEX MATCH "[0-9]+" OCC_MAJOR ${OCC_MAJOR})
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file(STRINGS ${OCC_INCLUDE_DIR}/Standard_Version.hxx OCC_MINOR
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REGEX "#define OCC_VERSION_MINOR.*"
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)
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string(REGEX MATCH "[0-9]+" OCC_MINOR ${OCC_MINOR})
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file(STRINGS ${OCC_INCLUDE_DIR}/Standard_Version.hxx OCC_MAINT
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REGEX "#define OCC_VERSION_MAINTENANCE.*"
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)
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string(REGEX MATCH "[0-9]+" OCC_MAINT ${OCC_MAINT})
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set(OCC_VERSION_STRING "${OCC_MAJOR}.${OCC_MINOR}.${OCC_MAINT}")
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else()
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message(
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FATAL_ERROR
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"Couldn't find Open CASCADE installation. "
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"Either both OCC_INCLUDE_DIR ('${OCC_INCLUDE_DIR}') and OCC_LIBRARY_DIR ('${OCC_LIBRARY_DIR}') "
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"must be specified or OpenCASCADE package should be discoverable. "
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"If you're using OCE, then providing a package is not available "
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"and you need to provide OCE_INCLUDE_DIR and OCE_LIBRARY_DIR directly."
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)
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endif()
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set(
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OpenCASCADE_LIBRARIES
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TKernel TKMath TKBRep TKGeomBase TKGeomAlgo TKG3d TKG2d TKShHealing TKTopAlgo TKMesh TKPrim TKBool TKBO
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TKFillet TKXSBase TKOffset TKHLR
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# @todo investigate the exact conditions when this is necessary
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TKBin
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)
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if(OCC_VERSION_STRING VERSION_LESS 7.8.0)
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list(APPEND OpenCASCADE_LIBRARIES TKIGES TKSTEPBase TKSTEPAttr TKSTEP209 TKSTEP)
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else(OCC_VERSION_STRING VERSION_LESS 7.8.0)
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list(APPEND OpenCASCADE_LIBRARIES TKDESTEP TKDEIGES)
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endif(OCC_VERSION_STRING VERSION_LESS 7.8.0)
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find_library(libTKernel NAMES TKernel TKerneld PATHS ${OCC_LIBRARY_DIR} NO_DEFAULT_PATH)
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if(libTKernel)
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message(STATUS "Required Open Cascade Library files found")
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else()
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message(
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FATAL_ERROR
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"Unable to find Open Cascade library files in OCC_LIBRARY_DIR ('${OCC_LIBRARY_DIR}'), aborting"
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)
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endif()
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if(MSVC)
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add_definitions(-DHAVE_NO_DLL)
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add_debug_variants(OpenCASCADE_LIBRARIES "${OpenCASCADE_LIBRARIES}" d)
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endif()
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if(WIN32)
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# OCC might require linking to Winsock depending on the version and build configuration
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list(APPEND OpenCASCADE_LIBRARIES ws2_32.lib)
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endif()
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# Make sure cross-referenced symbols between static OCC libraries get
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# resolved. Also add thread and rt libraries.
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get_filename_component(libTKernelExt ${libTKernel} EXT)
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if("${libTKernelExt}" STREQUAL ".a")
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set(OCCT_STATIC ON)
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endif()
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if(OCCT_STATIC)
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find_package(Threads)
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if(WASM_BUILD)
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set(OpenCASCADE_LIBRARIES ${OpenCASCADE_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT})
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else()
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# OpenCASCADE_LIBRARIES repeated N times below in order to fix cyclic dependencies
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# tfk: --start-group ... --end-group didn't work on the apple linker when last tested
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if(APPLE)
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set(OpenCASCADE_LIBRARIES ${OpenCASCADE_LIBRARIES} ${OpenCASCADE_LIBRARIES} ${OpenCASCADE_LIBRARIES} ${OpenCASCADE_LIBRARIES} ${OpenCASCADE_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT})
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else()
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set(OpenCASCADE_LIBRARIES -Wl,--start-group ${OpenCASCADE_LIBRARIES} -Wl,--end-group ${CMAKE_THREAD_LIBS_INIT})
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endif()
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endif()
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if(NOT APPLE AND NOT WIN32)
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set(OpenCASCADE_LIBRARIES ${OpenCASCADE_LIBRARIES} "rt")
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endif()
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if(NOT WIN32)
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set(OpenCASCADE_LIBRARIES ${OpenCASCADE_LIBRARIES} "dl")
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endif()
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endif()
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add_library(OpenCASCADE_INTERFACE INTERFACE IMPORTED)
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target_include_directories(OpenCASCADE_INTERFACE INTERFACE "${OCC_INCLUDE_DIR}")
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target_link_libraries(OpenCASCADE_INTERFACE INTERFACE ${OpenCASCADE_LIBRARIES})
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target_link_directories(OpenCASCADE_INTERFACE INTERFACE "${OCC_LIBRARY_DIR}")
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set(OpenCASCADE_LIBRARIES OpenCASCADE_INTERFACE)
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