if (ENABLE_SHARP)
  SET(SHARP_SOURCE ${CMAKE_SOURCE_DIR}/external/sharp)
  SET(DEP_BUILD ${CMAKE_SOURCE_DIR}/external/sharp/auto)
  ExternalProject_Add(sharp
    SOURCE_DIR ${SHARP_SOURCE}
    BUILD_IN_SOURCE 1 
    CONFIGURE_COMMAND ${SHARP_SOURCE}/configure "CC=${CMAKE_C_COMPILER}" "CXX=${CMAKE_CXX_COMPILER}" --prefix=${DEP_BUILD}
    BUILD_COMMAND ${CMAKE_MAKE_PROGRAM}
    INSTALL_COMMAND echo "No install"
  )
  SET(CUTILS_LIBRARY ${DEP_BUILD}/lib/libc_utils.a)
  SET(FFTPACK_LIBRARY ${DEP_BUILD}/lib/libfftpack.a)
  SET(SHARP_LIBRARY ${DEP_BUILD}/lib/libsharp.a)
  SET(SHARP_LIBRARIES ${SHARP_LIBRARY} ${FFTPACK_LIBRARY} ${CUTILS_LIBRARY})
  SET(SHARP_INCLUDE_PATH ${DEP_BUILD}/include)
endif (ENABLE_SHARP)



SET(OMPTL_BUILD_DIR ${CMAKE_BINARY_DIR}/omptl-prefix/src/omptl)
ExternalProject_Add(omptl
  URL ${CMAKE_SOURCE_DIR}/external/omptl-20120422.tar.bz2
  CONFIGURE_COMMAND echo "No configure"
  BUILD_COMMAND echo "No build"
  INSTALL_COMMAND ${CMAKE_COMMAND} -E copy_directory ${OMPTL_BUILD_DIR} ${CMAKE_BINARY_DIR}/external/stage/include/omptl
)
include_directories(${OMPTL_BUILD_DIR}/..)