Re: [Discuss-gnuradio] cross compiling make error within OpenEmbedded SDK

[Philip Balister]

I replied, if anyone is interested ping me and I'll resend to the list.

On 11/01/2013 08:11 AM, Tom Rondeau wrote:
> On Fri, Nov 1, 2013 at 11:06 AM, Taylor Centers
> <address@hidden> wrote:
>> I'm trying to cross compile gnuradio for arm within an OpenEmbedded SDK
>> using
>> bitbake 1.18
>> meta-openembedded Dylan
>> openembedded-core Dylan
>> &
>> meta-ettus e100-updates
>>
>> After generating and setting up the SDK, I have downloaded the gnuradio
>> source and am trying to build it from there.
>>
>> When I run make I am given the error:
>>
>> make[2]: *** No rule to make target `../gr-atsc/src/lib/atsci_
>> viterbi_gen', needed by `gr-atsc/src/lib/atsci_viterbi_mux.cc'.  Stop.
>> make[1]: *** [gr-atsc/src/lib/CMakeFiles/gnuradio-atsc.dir/all] Error 2
>> make: *** [all] Error 2
>>
>> It wants to build atsci_viterbi_gen, a dependency for atsci_viterbi_mux.cc
>> but it can't find the rules for it.
>>
>> To try and debug this I followed the same steps to build gnuradio within the
>> sdk and in my home directory and compared the differences.
>>
>> Initially after downloading a fresh version of the gnuradio source in each
>> directory I ran a grep for the string "atsci_viterbi_gen" and receive the
>> same output, as expected.
>>
>> gr-atsc/lib/CMakeLists.txt:    add_executable(atsci_viterbi_gen
>> atsci_viterbi_gen.cc)
>> gr-atsc/lib/CMakeLists.txt:    export(TARGETS atsci_viterbi_gen APPEND FILE
>> ${EXPORT_FILE})
>> gr-atsc/lib/CMakeLists.txt:    DEPENDS atsci_viterbi_gen
>> gr-atsc/lib/CMakeLists.txt:    COMMAND atsci_viterbi_gen -o
>> ${atsci_viterbi_mux_cc}
>>
>> However, after running cmake on both gnuradio's and then grepping for the
>> same string I notice a huge difference.
>>
>> The output from the grep in my home directory is very verbose with tons of
>> additional files created that reference atsci_viterbi_gen as well as its own
>> directory
>> build/gr-atsc/lib/CMakeFiles/atsci_viterbi_gen.dir/
>>
>> Contrarily only two additional references were made to "atsci_viterbi_gen"
>> after running cmake within the sdk, both occur when it was referred to as a
>> dependency for atsci_viterbi_mux
>>
>> build/gr-atsc/lib/CMakeFiles/gnuradio-atsc.dir/build.make:gr-atsc/lib/atsci_viterbi_mux.cc:
>> ../gr-atsc/lib/atsci_viterbi_gen
>> build/gr-atsc/lib/CMakeFiles/gnuradio-atsc.dir/build.make:    cd
>> /usr/local/e100.3/gnuradio/build/gr-atsc/lib && atsci_viterbi_gen -o
>> /usr/local/e100.3/gnuradio/build/gr-atsc/lib/atsci_viterbi_mux.cc
>>
>> gnuradio make's flawlessly within my home directory.
>>
>> Why doesn't cmake generate the same files within the SDK that it does
>> natively?
>> How can I get it to?
>> Am I looking in the right place to get to the bottom of this error?
>>
>> Any tips or additional direction would help.  Thanks a ton,
>>
>> Taylor
> 
> I'm sure Philip or some of the other OE people on the list can help
> you more than I can. But unless you are trying to do ATSC stuff, I
> would recommend just disabling it for now. There's work going on to
> update the ATSC code, and it's unlikely that you'll be able to do too
> much with what's in gr-atsc right now on an e100 (unless someone can
> verify they've got it to work there?). So you can pass
> -DENABLE_GR_ATSC=False to the cmake command to remove it from the
> build.
> 
> Tom
> 
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