Hi,
By adding ${UHD_LIBRARIES}, the problem is solved :)
Thanks,
Zhihong
On Fri, Feb 5, 2016 at 11:40 AM, Zhihong Luo <zh...@umich.edu> wrote:
> Hi Marcus,
>
> Sorry about the pictures, I will use text later on :)
>
> After adding the gnuradio-runtime, the top-block line works with no
> errors. But the gr::uhd::usrp_source::sptr usrp_source =
> gr::uhd::usrp_source::make(device_addr, uhd::stream_args_t("fc32")); stills
> has error:
>
> /usr/bin/ld: CMakeFiles/tags.dir/tags.cc.o: undefined reference to symbol
> '_ZN3uhd13device_addr_tC1ERKSs'
> //usr/local/lib/libuhd.so.003: error adding symbols: DSO missing from
> command line
>
> Thanks,
> Zhihong
>
>
> On Fri, Feb 5, 2016 at 4:39 AM, Marcus Müller <marcus.muel...@ettus.com>
> wrote:
>
>> Hi Zhihong,
>>
>> please stop posting screenshots of text. It's text, you can mark it, copy
>> it, and paste it to an email as text. It's way easier for everyone to deal
>> with that.
>>
>> Now, you've used
>>
>> target_link_libraries(tags gnuradio-uhd boost_system)
>>
>>
>> which links the target "tags" against the libraries "gnuradio-uhd" and
>> "boost_system".
>> Now, the error you're getting is that the linker can't find things
>> related to top_block.
>> Point is that top_block belongs to the GNU Radio run-time. Hence, the
>> error should be pointing you in the right direction: what you actually need
>> to do is
>>
>> target_link_libraries(tags *gnuradio-runtime* gnuradio-uhd boost_system)
>>
>>
>> Best regards,
>> Marcus
>>
>> On 05.02.2016 06:39, Zhihong Luo wrote:
>>
>> Hi,
>>
>> I created an OOT module, added the UHD into the required components and
>> added the following lines in the top-level CMakelist.txt and the
>> CMakelist.txt under the apps folder.
>>
>>
>>
>> The tesr.cc just makes a top_block: gr::top_block_sptr tb =
>> gr::make_top_block("tags"),
>> which leads to undefined reference.
>>
>> If I add another line "gr::uhd::usrp_source::sptr usrp_source =
>> gr::uhd::usrp_source::make(device_addr, uhd::stream_args_t("fc32")); ", the
>> error is:
>>
>>
>> I think it is a linker problem, but I can not find what I am missing. Is
>> there anyone who could help me fix this?
>>
>> Thanks,
>> Zhihong
>>
>> On Thu, Feb 4, 2016 at 9:34 AM, Zhihong Luo <zh...@umich.edu> wrote:
>>
>>> Hi Tom,
>>>
>>> Thank you for the advice. The website seems to be really useful.
>>>
>>> Zhihong
>>>
>>>
>>> 2016年2月4日星期四，Tom Rondeau < <t...@trondeau.com>t...@trondeau.com> 写道：
>>>
>>>> On Wed, Feb 3, 2016 at 8:28 PM, Zhihong Luo <zh...@umich.edu> wrote:
>>>>
>>>>> Hi Marcus,
>>>>>
>>>>> Can you be more specific about what I need to add to the
>>>>> CMakeLists.txt? Because in the <modulename>/apps/CMakeLists.tx, there is
>>>>> no
>>>>> "sources", but only:
>>>>>
>>>>> include(GrPython)
>>>>>
>>>>> GR_PYTHON_INSTALL(
>>>>> PROGRAMS
>>>>> DESTINATION bin
>>>>> )
>>>>>
>>>>> And in the <modulename>/CMakeLists.txt, what do you mean by "Add "uhd"
>>>>> to the list"? Is it "find_package(UHD)"? Or things like including
>>>>> ${UHD_INCLUDE_DIRS} ${GR_UHD_INCLUDE_DIRS}
>>>>> to the directory? I try to learn from the built-in gr-uhd, but there
>>>>> is no apps folder and its CMakeList.txt looks very different. So I was
>>>>> lost.
>>>>>
>>>>> I am really unfamiliar with these, so more detailed explanation will
>>>>> be much appreciated. Thanks.
>>>>>
>>>>> Zhihong Luo
>>>>>
>>>>
>>>>
>>>> We appreciate your enthusiasm for use GNU Radio and building stuff with
>>>> it. However, the questions you are asking are more related to C++,
>>>> makefiles, and CMake. I think you'd be better off studying those and
>>>> learning the basics before asking questions like that here.
>>>>
>>>> Another tactic you can take is to look at all of the projects available
>>>> on cgran.org as well as look at the GNU Radio source code itself. We
>>>> have lots of examples out there that you can learn from to do what you want
>>>> here.
>>>>
>>>> Tom
>>>>
>>>>
>>>>
>>>>
>>>>> On Wed, Feb 3, 2016 at 3:56 AM, Zhihong Luo <zh...@umich.edu> wrote:
>>>>>
>>>>>> Hi Marcus,
>>>>>>
>>>>>> Thank you for the detailed instructions! I'll test it tomorrow and
>>>>>> hopefully it can work :) Have a good night.
>>>>>>
>>>>>> Zhihong
>>>>>>
>>>>>>
>>>>>> 2016年2月3日星期三，Marcus Müller <marcus.muel...@ettus.com> 写道：
>>>>>>
>>>>>>> Hi Zhihong Luo,
>>>>>>>
>>>>>>> you're not linking your program against any GNU Radio component,
>>>>>>> which is why the linker step in your compiler call complains about all
>>>>>>> the
>>>>>>> symbols from these libraries missing.
>>>>>>> Normally, it's the job of a build system to set up your compiler
>>>>>>> call correctly, but in this case, somethin like
>>>>>>>
>>>>>>> g++ tags.cpp -o tags $(pkg-config --libs --cflags gnuradio-runtime
>>>>>>> gnuradio-uhd)
>>>>>>>
>>>>>>> should work.
>>>>>>>
>>>>>>> I'd still recommend not doing that, but using gr_modtool to create a
>>>>>>> new out-of-tree module
>>>>>>>
>>>>>>> gr_modtool newmod
>>>>>>>
>>>>>>> and add your file in the <modulename>/apps/ folder, adding the
>>>>>>> filename to <modulename>/apps/CMakeLists.txt under "sources". Add "uhd"
>>>>>>> to
>>>>>>> the list of necessary GNU Radio components in
>>>>>>> <modulename>/CMakeLists.txt
>>>>>>>
>>>>>>> Then, it's the normal CMake build procedure:
>>>>>>>
>>>>>>> cd <modulename>
>>>>>>> mkdir build
>>>>>>> cd build
>>>>>>> cmake ..
>>>>>>> make
>>>>>>> make install
>>>>>>>
>>>>>>> On 03.02.2016 09:39, Zhihong Luo wrote:
>>>>>>>
>>>>>>> Hi Marcus,
>>>>>>>
>>>>>>> Sorry, I was typing and accidentally sent it out the previous one...
>>>>>>> The code is
>>>>>>>
>>>>>>> #include<gnuradio/top_block.h>
>>>>>>> #include<gnuradio/uhd/usrp_source.h>
>>>>>>> #include<uhd/utils/safe_main.hpp>
>>>>>>> #include <boost/make_shared.hpp>
>>>>>>> #include <boost/thread/thread.hpp>
>>>>>>> #include <boost/program_options.hpp>
>>>>>>> #include <csignal>
>>>>>>> #include <iostream>
>>>>>>>
>>>>>>> namespace po = boost::program_options;
>>>>>>> int UHD_SAFE_MAIN(int argc, char *argv[]){ std::string device_addr
>>>>>>> =" ";
>>>>>>>
>>>>>>> gr::top_block_sptr tb = gr::make_top_block("tags_demo");
>>>>>>>
>>>>>>> gr::uhd::usrp_source::sptr usrp_source =
>>>>>>> gr::uhd::usrp_source::make(device_addr,
>>>>>>> uhd::stream_args_t("fc32")); }
>>>>>>>
>>>>>>> Then I ran the command:
>>>>>>> g++ tags.cpp -o tags -l boost_system
>>>>>>>
>>>>>>> which ends up having errors:
>>>>>>>
>>>>>>> undefined reference to gr::make_top_block, uhd::device_addr_t,
>>>>>>> gr::uhd::usrp_source and etc.
>>>>>>>
>>>>>>> Thanks,
>>>>>>> Zhihong Luo
>>>>>>>
>>>>>>> On Wed, Feb 3, 2016 at 4:29 PM, Zhihong Luo <zh...@umich.edu> wrote:
>>>>>>>
>>>>>>>> Hi Marcus,
>>>>>>>>
>>>>>>>> Of course. Here are the codes:
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> On Wed, Feb 3, 2016 at 4:13 PM, Marcus Müller <
>>>>>>>> marcus.muel...@ettus.com> wrote:
>>>>>>>>
>>>>>>>>> Hi Zhihong Luo,
>>>>>>>>>
>>>>>>>>> could you please rather share text than pictures of text, too
>>>>>>>>> small for reading?
>>>>>>>>>
>>>>>>>>> Best regards,
>>>>>>>>> Marcus
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> On 03.02.2016 07:31, Zhihong Luo wrote:
>>>>>>>>>
>>>>>>>>> Hi all,
>>>>>>>>>
>>>>>>>>> I just started to learn to use c++ for gnuradio, and I copied some
>>>>>>>>> codes from the "tags_demo.cc". But compilation error occurred as
>>>>>>>>> shown in
>>>>>>>>> the following screen shots. Can you tell me where I made a mistake?
>>>>>>>>>
>>>>>>>>> Thanks,
>>>>>>>>> Zhihong Luo
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> _______________________________________________
>>>>>>>>> Discuss-gnuradio mailing
>>>>>>>>> listDiscuss-gnuradio@gnu.orghttps://lists.gnu.org/mailman/listinfo/discuss-gnuradio
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> _______________________________________________
>>>>>>>>> Discuss-gnuradio mailing list
>>>>>>>>> Discuss-gnuradio@gnu.org
>>>>>>>>> <https://lists.gnu.org/mailman/listinfo/discuss-gnuradio>
>>>>>>>>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
>>>>>>>>>
>>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> Discuss-gnuradio mailing list
>>>>> Discuss-gnuradio@gnu.org
>>>>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
>>>>>
>>>>>
>>>>
>>
>>
>
_______________________________________________
Discuss-gnuradio mailing list
Discuss-gnuradio@gnu.org
https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
