Bug report and inspiration: http://code.opencv.org/issues/3328
OCV_OPTION(WITH_WIN32UI "Build with Win32 UI Backend support" ON IF WIN32 )
OCV_OPTION(WITH_QUICKTIME "Use QuickTime for Video I/O insted of QTKit" OFF IF APPLE )
OCV_OPTION(WITH_TBB "Include Intel TBB support" OFF IF (NOT IOS) )
+OCV_OPTION(WITH_OPENMP "Include OpenMP support" OFF)
OCV_OPTION(WITH_CSTRIPES "Include C= support" OFF IF WIN32 )
OCV_OPTION(WITH_TIFF "Include TIFF support" ON IF (NOT IOS) )
OCV_OPTION(WITH_UNICAP "Include Unicap support (GPL)" OFF IF (UNIX AND NOT APPLE AND NOT ANDROID) )
endif()
# --- OpenMP ---
-if(NOT HAVE_TBB AND NOT HAVE_CSTRIPES)
- set(_fname "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/omptest.cpp")
- file(WRITE "${_fname}" "#ifndef _OPENMP\n#error\n#endif\nint main() { return 0; }\n")
- try_compile(HAVE_OPENMP "${CMAKE_BINARY_DIR}" "${_fname}")
- file(REMOVE "${_fname}")
-else()
- set(HAVE_OPENMP 0)
+if(WITH_OPENMP AND NOT HAVE_TBB AND NOT HAVE_CSTRIPES)
+ find_package(OpenMP)
+ if(OPENMP_FOUND)
+ set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${OpenMP_C_FLAGS}")
+ set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OpenMP_CXX_FLAGS}")
+ endif()
+ set(HAVE_OPENMP "${OPENMP_FOUND}")
endif()
# --- GCD ---