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From: | Nicolas Cuervo Benavides |
Subject: | Re: [Discuss-gnuradio] UHD: undefined symbol uhd_time_spec_t |
Date: | Tue, 19 May 2015 11:52:02 +0200 |
Hi Nicolas,
so the good news is that you're doing things right:
the CMake output contains this line:
Checking for GNU Radio Module: UHDwhich indicates that you did a
set(GR_REQUIRED_COMPONENTS RUNTIME UHD PMT)
(or even more), so the libraries that CMake *should* link against are being found.
You should check your gr-dyspan/lib/CMakeLists.txt; look for the lines starting with
target_link_libraries(...
These should also include ${GNURADIO_ALL_LIBRARIES}.
Best regards,
Marcus
On 05/19/2015 10:40 AM, Nicolas Cuervo Benavides wrote:
Hi all,
I'm having right now problems with a implementation of a time tag in a block that I'm writing. I'm basically writing a burst tagger with SOB, EOB and TX_TIME tags. The first two are working, but the third (the one that uses a UHD function), is giving me problems.
I recognized that the part that is not properly working is when I write "uhd::time_spec_t". I even tried to create an arbitrary variable by writing just "uhd::time_spec_t test;" in an arbitrary function and then ctest, and then I notice that there is problems with that, as the output says:
" /$WORKING_DIR$/build/lib/libgnuradio-dyspan.so: undefined symbol: _ZN3uhd11time_spec_tC1Ed"
Make and make install of my block run without any issue.
I have in the headers and body the necessary includes, such as <sys/time.h> and <uhd/types/time_spec.hpp>. I also added the UHD module in the CMakeList.txt file and it is found, as I can see this in the output:
-- Build type not specified: defaulting to release.-- Boost version: 1.54.0-- Found the following Boost libraries:-- filesystem-- system-- date_timeChecking for GNU Radio Module: RUNTIME* INCLUDES=/usr/local/include* LIBS=/usr/local/lib/libgnuradio-runtime.so;/usr/local/lib/libgnuradio-pmt.soGNURADIO_RUNTIME_FOUND = TRUEChecking for GNU Radio Module: UHD* INCLUDES=/usr/local/include* LIBS=/usr/local/lib/libgnuradio-uhd.so;/usr/local/lib/libgnuradio-runtime.so;/usr/local/lib/libgnuradio-pmt.soGNURADIO_UHD_FOUND = TRUEChecking for GNU Radio Module: PMT* INCLUDES=/usr/local/include* LIBS=/usr/local/lib/libgnuradio-runtime.so;/usr/local/lib/libgnuradio-pmt.soGNURADIO_PMT_FOUND = TRUE---- Checking for module SWIG-- Found SWIG version 2.0.11.-- Configuring done-- Generating done-- Build files have been written to: /$WORKING_DIR$/build
I sincerely don't know what am I missing. Maybe I'm skipping some linking steps, but I don't know right now how to trace this. Any type of help will be welcomed.
Thanks in advance for your opinions,
Nicolas
--
Nicolás Cuervo Benavides
Handy: +49 157 70476855Electric and Electronic Engineering department.Electronic EngineeringUniversidad Nacional de Colombia--Student M.Sc. Information and Communication TechnologyKarlsruher Institut für TechnologieKarlsruhe, Baden Würtemberg, Germany
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