# Taken and adapted from the heekscad project: https://github.com/Heeks
# HeeksCAD is covered by the new BSD license
# Copyright (c) 2008, Daniel Heeks
# All rights reserved.
# Once done, this will define
# OpenCASCADE_FOUND - true if OCC has been found
# OpenCASCADE_INCLUDE_DIR - the OCC include dir
# OpenCASCADE_LIBRARIES - names of OCC libraries
# OpenCASCADE_LINK_DIRECTORY - location of OCC libraries
# ${OpenCASCADE_FOUND} is cached, so once OCC is found this block shouldn't have to run again
IF( NOT OpenCASCADE_FOUND )
set(CASROOT $ENV{CASROOT} CACHE PATH "Additional include path for package search")
# 32 bit or 64 bit?
IF( CMAKE_SIZEOF_VOID_P EQUAL 4 )
IF( _firsttime STREQUAL TRUE )
MESSAGE( STATUS "This is a 32-bit system." )
ENDIF( _firsttime STREQUAL TRUE )
set(BITS 32)
ELSE( CMAKE_SIZEOF_VOID_P EQUAL 4 )
IF( _firsttime STREQUAL TRUE )
MESSAGE( STATUS "This is a 64-bit system. Adding appropriate compiler flags for OCC." )
ENDIF( _firsttime STREQUAL TRUE )
ADD_DEFINITIONS( -D_OCC64 )
IF (UNIX)
ADD_DEFINITIONS( -m64 )
ENDIF (UNIX)
set(BITS 64)
ENDIF( CMAKE_SIZEOF_VOID_P EQUAL 4 )
IF(UNIX)
set( _incsearchpath /usr/include/opencascade;/usr/include/;/opt/occ/inc;${CASROOT}/inc;${CASROOT}/include/ )
set( _libsearchpath /usr/lib64;/usr/lib;/opt/occ/lib;${CASROOT}/lib64;${CASROOT}/lib )
ELSE(UNIX)
IF (WIN32)
set( _incsearchpath ${CASROOT}\\inc;${CASROOT}\\include)
set( _testdllname TKernel.dll )
set( _libsearchpath ${CASROOT}\\win32\\lib;${CASROOT}\\win${BITS}\\lib;${CASROOT}\\win${BITS}\\vc9\\lib;${CASROOT}\\win${BITS}\\vc10\\lib;${CASROOT}\\win${BITS}\\vc14\\lib)
set( _dllsearchpath ${CASROOT}\\win32\\bin;${CASROOT}\\win${BITS}\\bin;${CASROOT}\\win${BITS}\\vc9\\bin;${CASROOT}\\win${BITS}\\vc10\\bin;${CASROOT}\\win${BITS}\\vc14\\bin)
ELSE(WIN32)
message( FATAL_ERROR "Unknown system! Exiting." )
ENDIF (WIN32)
ENDIF (UNIX)
#find the include dir by looking for Standard_Real.hxx
FIND_PATH( OpenCASCADE_INCLUDE_DIR Standard_Real.hxx PATH_SUFFIXES oce PATHS ${_incsearchpath} DOC "Path to OCC includes" )
IF( OpenCASCADE_INCLUDE_DIR MATCHES "NOTFOUND" )
SET( OpenCASCADE_FOUND FALSE CACHE BOOL FORCE )
MESSAGE( FATAL_ERROR "Cannot find OCC include dir. Install opencascade or add the include directory to INCLUDE or set CASROOT or create a symlink /opt/occ/inc pointing to the correct directory." )
ENDIF( OpenCASCADE_INCLUDE_DIR MATCHES "NOTFOUND" )
# Find one lib and save its directory to OpenCASCADE_LINK_DIRECTORY. Because
# OCC has so many libs, there is increased risk of a name collision.
# Requiring that all libs be in the same directory reduces the risk.
SET( OpenCASCADE_LINK_DIRECTORY "OpenCASCADE_LINK_DIRECTORY-NOTFOUND" CACHE PATH "Path to OCC libs" )
FIND_LIBRARY(TKernel_OCCLIB NAMES TKernel PATHS ${_libsearchpath} ${OpenCASCADE_LINK_DIRECTORY})
MARK_AS_ADVANCED( TKernel_OCCLIB )
IF(TKernel_OCCLIB MATCHES "NOTFOUND")
SET( OpenCASCADE_FOUND FALSE CACHE BOOL FORCE )
MESSAGE( FATAL_ERROR "Cannot find OCC lib dir. Install opencascade or add the lib directory to LIB or set CASROOT or create a symlink /opt/occ/lib pointing to the dir where the OCC libs are." )
ELSE(TKernel_OCCLIB MATCHES "NOTFOUND")
GET_FILENAME_COMPONENT(TMPDIR ${TKernel_OCCLIB} PATH)
SET( OpenCASCADE_LINK_DIRECTORY ${TMPDIR} CACHE PATH "Path to OCC libs" FORCE)
ENDIF(TKernel_OCCLIB MATCHES "NOTFOUND")
# check dll path
if(WIN32)
FIND_PATH( OpenCASCADE_DLL_DIRECTORY ${_testdllname} PATH ${_dllsearchpath} DOC "Path to OCC dlls" NO_SYSTEM_ENVIRONMENT_PATH)
IF( OpenCASCADE_DLL_DIRECTORY MATCHES "NOTFOUND" )
SET( OpenCASCADE_FOUND FALSE CACHE BOOL FORCE )
MESSAGE( FATAL_ERROR "Cannot find OCC DLL dir. Install opencascade or set CASROOT to the correct directory." )
ENDIF( OpenCASCADE_DLL_DIRECTORY MATCHES "NOTFOUND" )
endif(WIN32)
# everything was found
SET( OpenCASCADE_FOUND TRUE CACHE BOOL "Has OCC been found?" FORCE )
SET( _firsttime TRUE ) #so that messages are only printed once
MESSAGE( STATUS "Found OCC include dir: ${OpenCASCADE_INCLUDE_DIR}" )
MESSAGE( STATUS "Found OCC lib dir: ${OpenCASCADE_LINK_DIRECTORY}" )
if(WIN32)
MESSAGE( STATUS "Found OCC dll dir: ${OpenCASCADE_DLL_DIRECTORY}" )
endif(WIN32)
ELSE( NOT OpenCASCADE_FOUND )
SET( _firsttime FALSE ) #so that messages are only printed once
ENDIF( NOT OpenCASCADE_FOUND )
IF( OpenCASCADE_FOUND )
# get version
IF(OpenCASCADE_INCLUDE_DIR)
FOREACH(_occ_version_header Standard_Version.hxx)
IF(EXISTS "${OpenCASCADE_INCLUDE_DIR}/${_occ_version_header}")
FILE(STRINGS "${OpenCASCADE_INCLUDE_DIR}/${_occ_version_header}" occ_version_str REGEX "^#define[\t ]+OCC_VERSION_COMPLETE[\t ]+\".*\"")
STRING(REGEX REPLACE "^#define[\t ]+OCC_VERSION_COMPLETE[\t ]+\"([^\"]*)\".*" "\\1" OCC_VERSION_STRING "${occ_version_str}")
UNSET(occ_version_str)
BREAK()
ENDIF()
ENDFOREACH(_occ_version_header)
IF(NOT ${OpenCASCADE_FIND_VERSION} STREQUAL "")
IF(${OCC_VERSION_STRING} VERSION_LESS ${OpenCASCADE_FIND_VERSION})
MESSAGE(FATAL_ERROR "The found opencascade version is too old (version ${OCC_VERSION_STRING}). Required is at least version ${OpenCASCADE_FIND_VERSION}.")
ENDIF()
ENDIF()
ENDIF()
IF( _firsttime STREQUAL TRUE )
MESSAGE(STATUS "OCC Version: ${OCC_VERSION_STRING}")
ENDIF( _firsttime STREQUAL TRUE )
IF( DEFINED OpenCASCADE_FIND_COMPONENTS )
FOREACH( _libname ${OpenCASCADE_FIND_COMPONENTS} )
#look for libs in OpenCASCADE_LINK_DIRECTORY
FIND_LIBRARY( ${_libname}_OCCLIB ${_libname} ${OpenCASCADE_LINK_DIRECTORY} NO_DEFAULT_PATH)
MARK_AS_ADVANCED( ${_libname}_OCCLIB )
SET( _foundlib ${${_libname}_OCCLIB} )
IF( _foundlib STREQUAL ${_libname}_OCCLIB-NOTFOUND )
MESSAGE( FATAL_ERROR "Cannot find ${_libname}. Is it spelled correctly? Correct capitalization? Do you have another package with similarly-named libraries, installed at ${OpenCASCADE_LINK_DIRECTORY}? (That is where this script thinks the OCC libs are.)" )
ENDIF( _foundlib STREQUAL ${_libname}_OCCLIB-NOTFOUND )
SET( OpenCASCADE_LIBRARIES ${OpenCASCADE_LIBRARIES} ${_foundlib} )
ENDFOREACH( _libname ${OpenCASCADE_FIND_COMPONENTS} )
IF (UNIX)
ADD_DEFINITIONS( -DLIN -DLININTEL -DHAVE_CONFIG_H)
ENDIF (UNIX)
if (WIN32)
ADD_DEFINITIONS( -DWNT )
endif(WIN32)
ADD_DEFINITIONS( -DHAVE_IOSTREAM -DHAVE_FSTREAM -DHAVE_LIMITS_H -DHAVE_IOMANIP )
ELSE( DEFINED OpenCASCADE_FIND_COMPONENTS )
MESSAGE( AUTHOR_WARNING "Developer must specify required libraries to link against in the cmake file, i.e. find_package( OpenCASCADE REQUIRED COMPONENTS TKernel TKBRep) . Otherwise no libs will be added - linking against ALL OCC libraries is slow!")
ENDIF( DEFINED OpenCASCADE_FIND_COMPONENTS )
ENDIF( OpenCASCADE_FOUND )
