Hi Jeon,
There's a "B" at the end of your "include_directories", but I guess
that's just a copy&paste problem here – otherwise, compilation would've
failed.
I think you need to use "${LIBBLUETOOTH_LIBRARIES}" in the
target_link_libraries directive in your lib/CMakeLists.txt, not in
link_directories in your main CMakeLists.txt.
Best regards,
Marcus
On 21.12.2016 16:48, Jeon wrote:
> In my OOT module, I am using `libbluetooth-dev` library by BlueZ. I am
> using a couple of APIs of it such as `hci_read_clock`. I am using
> FindBluetooth cmake module
> (https://github.com/greatscottgadgets/ubertooth/blob/master/host/cmake/modules/FindBLUETOOTH.cmake
> <https://github.com/greatscottgadgets/ubertooth/blob/master/host/cmake/modules/FindBLUETOOTH.cmake>)
> and I thought that I correctly linked the library.
>
> find_package(Bluetooth REQUIRED)
> if(NOT LIBBLUETOOTH_FOUND)
> message(FATAL_ERROR "bluez (libbluetooth-dev) required")
> endif()
>
> include_directories(
> ${CMAKE_SOURCE_DIR}/lib
> ${CMAKE_SOURCE_DIR}/include
> ${CMAKE_BINARY_DIR}/lib
> ${CMAKE_BINARY_DIR}/include
> ${Boost_INCLUDE_DIRS}
> ${CPPUNIT_INCLUDE_DIRS}
> ${GNURADIO_ALL_INCLUDE_DIRS}
> ${LIBBLUETOOTH_INCLUDE_DIR}B
> )
>
> link_directories(
> ${Boost_LIBRARY_DIRS}
> ${CPPUNIT_LIBRARY_DIRS}
> ${GNURADIO_RUNTIME_LIBRARY_DIRS}
> ${LIBBLUETOOTH_LIBRARIES}
> )
>
> And I successfully built and installed my OOT module. To test it, I
> made a simple flow graph but it fails to run. After some debugging, It
> seems that I reached at the dead end.
>
> Debug log:
>
> $ /usr/local/lib/python2.7/dist-packages/my_oot_module
> $ python my_oot_module_swig.py
> Traceback (most recent call last):
> File "my_oot_module_swig.py", line 28, in <module>
> _my_oot_module_swig = swig_import_helper()
> File "my_oot_module_swig.py", line 24, in swig_import_helper
> _mod = imp.load_module('_my_oot_module_swig', fp, pathname,
> description)
> ImportError: /usr/local/lib/libgnuradio-my_oot_module.so: undefined
> symbol: hci_read_clock
>
> I wonder that the above error is C++ level error or Python level
> error. And how can I fix it?
>
> If infromation given in this post is not sufficient, please let me
> know it.
>
> Regards,
> Jeon.
>
>
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