Re: [Discuss-gnuradio] I can't get my gsl to link

[Alan Corey]

It might help if I had more idea what's supposed to happen.  Was I
supposed to define SEARCH_DIR?  Or replace it?  Is that 1 line or 2?

Just running
 ld --verbose | grep SEARCH_DIR | tr -s ' ;' \\012
ld: fatal error: no input files

Trying as 1 line:
ld --verbose | grep SEARCH_DIR | tr -s ' ;' \\012 make VERBOSE=1
tr: extra operand ‘make’
Try 'tr --help' for more information.
ld: fatal error: no input files

>From the stackoverflow example, if I put "-Wl,--verbose" in my
CMakeCache.txt as part of the string that gets passed to the C
compiler would that do it?  If I could use a more normal -L and -l I'd
be more comfortable but I'm working through the full cmake process.  I
don't know how to extract what I need to try to link this manually.

Yup, aarch64 on an Odroid N2:
Linux odroid 4.9.177+ #1 SMP PREEMPT Sat May 18 09:49:10 CEST 2019
aarch64 GNU/Linux

Debian from meveric's image, still Stretch so far.  Some dependencies
I built from source, some are from the debs if they were new enough.

I disabled GR-WAVELET, FEC and GR-DTV, got it to build.  Ran
volk_profile, it picked up the neon correctly.  I don't have an RF
source driver so far.  Using an RTL2832 dongle, trying to build
Osmocom.  There's a ton of obsolete documentation out there.

Probably doesn't matter but my LD_LIBRARY_PATH is
/usr/local/lib:/lib:/lib/aarch64-linux-gnu:/usr/lib:/usr/lib/aarch64-linux-gnu





On 9/6/19, Vasil Velichkov <address@hidden> wrote:
> Hi Alen,
>
> On 06/09/2019 00.45, Alan Corey wrote:
>> I think this is a low level problem, it gets through cmake and all
>> that, but when it gets down to make and ld I get:
>>
>> [ 49%] Built target fft_qa_fft_shift
>> [ 49%] Linking CXX shared library libgnuradio-filter.so
>> /usr/bin/ld: error: cannot find -lgsl
>> /usr/bin/ld: error: cannot find -lgslcblas
>> collect2: error: ld returned 1 exit status
>> gr-fec/lib/CMakeFiles/gnuradio-fec.dir/build.make:824: recipe for target
>> 'gr-fec
>> /lib/libgnuradio-fec.so.3.9.0.0-git' failed
>> make[2]: *** [gr-fec/lib/libgnuradio-fec.so.3.9.0.0-git] Error 1
>> CMakeFiles/Makefile2:4691: recipe for target
>> 'gr-fec/lib/CMakeFiles/gnuradio-fec
>> .dir/all' failed
>> make[1]: *** [gr-fec/lib/CMakeFiles/gnuradio-fec.dir/all] Error 2
>> make[1]: *** Waiting for unfinished jobs....
>> [ 52%] Built target gnuradio-filter
>> Makefile:140: recipe for target 'all' failed
>> make: *** [all] Error 2
>
> Post the output of
>
>     ld --verbose | grep SEARCH_DIR | tr -s ' ;' \\012
>     make VERBOSE=1
>
>> Yet ldconfig -p | grep gsl says
>>      libgslcblas.so.0 (libc6,AArch64) => /usr/local/lib/libgslcblas.so.0
>>      libgslcblas.so (libc6,AArch64) => /usr/local/lib/libgslcblas.so
>>      libgsl.so.25 (libc6,AArch64) => /usr/local/lib/libgsl.so.25
>>      libgsl.so (libc6,AArch64) => /usr/local/lib/libgsl.so
>
> The ldconfig cache is used only by the runtime linker and is not used when
> you build a program or library, e.g. not used by /usr/bin/ld.
> https://stackoverflow.com/a/21610523/2315085
>
>> What's maybe odd is that ls -al | grep gsl in /usr/local/lib looks like
>> this:
>> -rw-r--r--  1 root staff 22783350 Sep  3 21:19 libgsl.a
>> -rw-r--r--  1 root staff  1885346 Sep  3 21:19 libgslcblas.a
>> -rwxr-xr-x  1 root staff      949 Sep  3 21:19 libgslcblas.la
>> lrwxrwxrwx  1 root staff       20 Sep  3 21:19 libgslcblas.so ->
>> libgslcblas.so.0.0.0
>> lrwxrwxrwx  1 root staff       20 Sep  3 21:19 libgslcblas.so.0 ->
>> libgslcblas.so.0.0.0
>> -rwxr-xr-x  1 root staff  1121320 Sep  3 21:19 libgslcblas.so.0.0.0
>> -rwxr-xr-x  1 root staff      918 Sep  3 21:19 libgsl.la
>> lrwxrwxrwx  1 root staff       16 Sep  3 21:19 libgsl.so ->
>> libgsl.so.25.0.0
>> lrwxrwxrwx  1 root staff       16 Sep  3 21:19 libgsl.so.25 ->
>> libgsl.so.25.0.0
>> -rwxr-xr-x  1 root staff 12949992 Sep  3 21:19 libgsl.so.25.0.0
>>
>> Only the symlinks to the real files end up in the ld.so cache,
>> ldfonfig doesn't pick up the actual files (libgsl.so.25.0.0 and
>> libgslcblas.so.0.0.0) at all.  That may not be important.
>
> That is normal.
>
>> Are the permissions wrong?  They installed this way.
>>
>> I installed gsl 2.6 from a tarball from http://ftp.gnu.org/gnu/gsl/, I
>> fetched Gnuradio by doing git clone --recursive
>> https://github.com/gnuradio/gnuradio.git
>
> From the ldconfig output it looks like you are building it on an 64bit ARM
> platform (AArch64). What device do you use and which Linux distribution?
>
> Regards,
> Vasil
>


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