Re: [LAD] ladspa: dlopen failed for tap ladspa plugins

ubuntu 12.04 with kxstudio upgrade.
hm, it is from kxstudio team repos.
0.7.2

> This. Is. Weird.
>
> Did you compile the tap plugins yourself?
> If yes: what version do you have? how did you compile it?
> If no: what linux distribution do you use?
>
> On 05/18/2014 12:42 PM, Zlobin Nikita wrote:
> > No dependency on libm.
> > $ ldd /usr/lib/ladspa/tap_echo.so
> >
> > linux-vdso.so.1 => (0x00007fff9dffe000)
> > libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f9472f16000)
> > /lib64/ld-linux-x86-64.so.2 (0x00007f9473523000)
> >>
> >> Okay, seems there is a problem with the libm
> >> (math library).
> >>
> >> Type that and send me the result:
> >> ldd /usr/lib/ladspa/tap_echo.so
> >>
> >> If there is a line like:
> >> libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6
> >> (0x00007f9d59562000)
> >>
> >> type:
> >> readelf -a /lib/x86_64-linux-gnu/libm.so.6 | grep powf
> >>
> >> and send me the result too.
> >>
> >> If there is no "libm" line, then there is indeed a problem
> >> and we'll try new things.
> >>
> >> How did you install /usr/lib/ladspa/tap_echo.so?
> >> Did you compile yourself?
> >>
> >> Please, answer all my questions so I can help you correctly.
> >>
> >> On 05/18/2014 12:17 PM, Zlobin Nikita wrote:
> >>> Sorry, i did not know about dlerror().
> >>> Output:
> >>> dlopen failed: /usr/lib/ladspa/tap_echo.so (dlerror:
> >>> /usr/lib/ladspa/tap_echo.so: undefined symbol: __powf_finite)
> >>> dlerror? (null)
> >>>
> >>>> In my code I call dlerror to print the error.
> >>>> What is printed?
> >>>> And can you send me the strace log so I have a look
> >>>> at what's going on?
> >>>>
> >>>> On 05/18/2014 11:15 AM, Zlobin Nikita wrote:
> >>>>> I don't see any changes. In my code following check fails:
> >>>>> if (pvPluginHandle)
> >>>>> Shortly - dlopen returns NULL, so futher struggle is useless.
> >>>>>
> >>>>>> try that:
> >>>>>>
> >>>>>> #include <stdio.h>
> >>>>>> #include <dlfcn.h>
> >>>>>> int main (int argc, char ** argv)
> >>>>>> {
> >>>>>>
> >>>>>> //LADSPAPluginSearch(describePluginLibrary);
> >>>>>> char plugpath [] = "/usr/lib/ladspa/tap_echo.so";
> >>>>>> void * pvPluginHandle = dlopen(plugpath, RTLD_NOW | RTLD_LOCAL);
> >>>>>> if (pvPluginHandle) dlclose (pvPluginHandle);
> >>>>>> else printf ("dlopen failed: %s (dlerror: %s)\n",
> >>>>>>
> >>>>>> plugpath, dlerror());
> >>>>>>
> >>>>>> printf("dlerror? %s\n", dlerror());
> >>>>>>
> >>>>>> return 0;
> >>>>>>
> >>>>>> }
> >>>>>>
> >>>>>> compile with:
> >>>>>> gcc -Wall bug.c -ldl -o bug
> >>>>>>
> >>>>>> then run:
> >>>>>> ./bug
> >>>>>>
> >>>>>> what happens?
> >>>>>> If it fails, can you run:
> >>>>>> strace ./bug 2>&1 > strace.log
> >>>>>> and send me the strace.log file.
> >>>>>>
> >>>>>> and also tell me what "gcc --version" says,
> >>>>>> and what "uname -a" says.
> >>>>>>
> >>>>>> Thanks.
> >>>>>>
> >>>>>> On 05/18/2014 07:07 AM, Zlobin Nikita wrote:
> >>>>>>> Fons: i tried with existing path.
> >>>>>>> Library path is valid - i checked it with ls (doing it for ladspa
> >>>>>>> dir
> >>>>>>> before to get libraries list).
> >>>>>>>
> >>>>>>> Code - includes are omited, line with main() declaration is numbered
> >>>>>>>
> >>>>>>> 30: int main (int argc, char ** argv)
> >>>>>>> {
> >>>>>>>
> >>>>>>> //LADSPAPluginSearch(describePluginLibrary);
> >>>>>>> char plugpath [] = "/usr/lib/ladspa/tap_echo.so";
> >>>>>>> void * pvPluginHandle = dlopen(plugpath, RTLD_NOW | RTLD_LOCAL);
> >>>>>>> if (pvPluginHandle) dlclose (pvPluginHandle);
> >>>>>>> else printf ("dlopen failed: %s\n", plugpath);
> >>>>>>> return 0;
> >>>>>>>
> >>>>>>> }
> >>>>>>>
> >>>>>>> hermann: thanks, will look
> >>>>>>>
> >>>>>>>> On 05/17/2014 10:15 PM, Zlobin Nikita wrote:
> >>>>>>>>> Backtrace of scanning crash (gdb output) is in attachement (too
> >>>>>>>>> long
> >>>>>>>>> lines
> >>>>>>>>> in email message are automatically wrapped - don't know, is it
> >>>>>>>>> good
> >>>>>>>>> to
> >>>>>>>>> violate this).
> >>>>>>>>
> >>>>>>>> You should provide some code, it's hard to help you without seeing
> >>>>>>>> what
> >>>>>>>> your program really does.
> >>>>>>>
> >>>>>>> _______________________________________________
> >>>>>>> Linux-audio-dev mailing list
> >>>>>>> Linux-audio-dev@email-addr-hidden
> >>>>>>> http://lists.linuxaudio.org/listinfo/linux-audio-dev
> >
> > _______________________________________________
> > Linux-audio-dev mailing list
> > Linux-audio-dev@email-addr-hidden
> > http://lists.linuxaudio.org/listinfo/linux-audio-dev

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Received on Sun May 18 16:15:03 2014