# Try to find OCE / OCC
# Once done this will define
#
# OCC_FOUND          - system has OCC - OpenCASCADE
# OCC_INCLUDE_DIR    - where the OCC include directory can be found
# OCC_LIBRARY_DIR    - where the OCC library directory can be found
# OCC_LIBRARIES      - Link this to use OCC
# OCC_OCAF_LIBRARIES - Link this to use OCC OCAF framework

# First try to find OpenCASCADE Community Edition
if(NOT DEFINED OCE_DIR)
  if(UNIX)
    set(OCE_DIR "/usr/local/share/cmake/")
  elseif(WIN32)
    set(OCE_DIR "c:/OCE-0.4.0/share/cmake")
  endif()
endif()

find_package(OCE QUIET)
if(0 AND OCE_FOUND)
  message(STATUS "-- OpenCASCADE Community Edition has been found.")
  # Disable this define. For more details see bug #0001872
  #add_definitions (-DHAVE_CONFIG_H)
  set(OCC_INCLUDE_DIR ${OCE_INCLUDE_DIRS})
  #set(OCC_LIBRARY_DIR ${OCE_LIBRARY_DIR})
else(0 AND OCE_FOUND) #look for OpenCASCADE
  if(WIN32)
    if(CYGWIN OR MINGW)
    FIND_PATH(OCC_INCLUDE_DIR Standard_Version.hxx
        /usr/include/oce
        /usr/include/opencascade
        /usr/local/include/opencascade
        /opt/opencascade/include
        /opt/opencascade/inc
      )
      FIND_LIBRARY(OCC_LIBRARY TKernel
        /usr/lib
        /usr/local/lib
        /opt/opencascade/lib
      )
    else(CYGWIN OR MINGW)
    FIND_PATH(OCC_INCLUDE_DIR Standard_Version.hxx
        "[HKEY_LOCAL_MACHINE\\SOFTWARE\\SIM\\OCC\\2;Installation Path]/include"
      )
      FIND_LIBRARY(OCC_LIBRARY TKernel
        "[HKEY_LOCAL_MACHINE\\SOFTWARE\\SIM\\OCC\\2;Installation Path]/lib"
      )
    endif(CYGWIN OR MINGW)
  else(WIN32)
    FIND_PATH(OCC_INCLUDE_DIR Standard_Version.hxx
      /usr/include/oce
      /usr/include/opencascade
      /usr/local/include/opencascade
      /opt/opencascade/include
      /opt/opencascade/inc
    )
    FIND_LIBRARY(OCC_LIBRARY TKernel
      /usr/lib
      /usr/local/lib
      /opt/opencascade/lib
    )
  endif(WIN32)
  if(OCC_LIBRARY)
    GET_FILENAME_COMPONENT(OCC_LIBRARY_DIR ${OCC_LIBRARY} PATH)
  endif(OCC_LIBRARY)
endif(0 AND OCE_FOUND)

if(OCC_INCLUDE_DIR)
  file(STRINGS ${OCC_INCLUDE_DIR}/Standard_Version.hxx OCC_MAJOR
    REGEX "#define OCC_VERSION_MAJOR.*"
  )
  string(REGEX MATCH "[0-9]+" OCC_MAJOR ${OCC_MAJOR})
  file(STRINGS ${OCC_INCLUDE_DIR}/Standard_Version.hxx OCC_MINOR
    REGEX "#define OCC_VERSION_MINOR.*"
  )
  string(REGEX MATCH "[0-9]+" OCC_MINOR ${OCC_MINOR})
  file(STRINGS ${OCC_INCLUDE_DIR}/Standard_Version.hxx OCC_MAINT
    REGEX "#define OCC_VERSION_MAINTENANCE.*"
  )
  string(REGEX MATCH "[0-9]+" OCC_MAINT ${OCC_MAINT})

  set(OCC_VERSION_STRING "${OCC_MAJOR}.${OCC_MINOR}.${OCC_MAINT}")
endif(OCC_INCLUDE_DIR)

# handle the QUIETLY and REQUIRED arguments and set OCC_FOUND to TRUE if
# all listed variables are TRUE
include(FindPackageHandleStandardArgs)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(OCC REQUIRED_VARS OCC_INCLUDE_DIR VERSION_VAR OCC_VERSION_STRING)

if(OCC_FOUND)
  set(OCC_LIBRARIES
    FWOSPlugin
    TKFillet
    TKMesh
    TKernel
    TKG2d
    TKG3d
    TKMath
    TKIGES
    TKSTL
    TKShHealing
    TKXSBase
    TKBool
    TKBO
    TKBRep
    TKTopAlgo
    TKGeomAlgo
    TKGeomBase
    TKOffset
    TKPrim
    TKSTEP
    TKSTEPBase
    TKSTEPAttr
    TKHLR
    TKFeat
    TKCAF
    TKXCAF
    TKLCAF
    TKXDESTEP
    TKXDEIGES
    TKMeshVS
  )
  set(OCC_OCAF_LIBRARIES
    TKCAF
    TKXCAF
    TKLCAF
    TKXDESTEP
    TKXDEIGES
    TKMeshVS
  )
  if(OCC_VERSION_STRING VERSION_LESS 6.7.3)
    list(APPEND OCC_OCAF_LIBRARIES TKAdvTools)
  endif(OCC_VERSION_STRING VERSION_LESS 6.7.3)
  message(STATUS "-- Found OCE/OpenCASCADE version: ${OCC_VERSION_STRING}")
  message(STATUS "-- OCE/OpenCASCADE include directory: ${OCC_INCLUDE_DIR}")
  message(STATUS "-- OCE/OpenCASCADE shared libraries directory: ${OCC_LIBRARY_DIR}")
  message(STATUS "-- OCE/OpenCASCADE shared libraries :\n ${OCC_LIBRARIES}")
else(OCC_FOUND)
  message("Neither OpenCASCADE Community Edition nor OpenCasCade were found: will not build CAD modules!")
endif(OCC_FOUND)