Re: [fluid-dev] ?==?utf-8?q? ALSA Problem with libfluidsynth.so

[Ralf Mattes]

Am Samstag, 09. September 2017 09:18 CEST, mike <address@hidden> schrieb:

>
> Hi Tom, Thank you. [again]. All working the way it should. The more I
> learn about Linux, the less I know - Mike

Custom-installed libraries should be installed under /usr/local (so either 
/usr/local/lib
of /usr/local/lib64). After installation you need to update the linker cache by 
running
ldconfig (or 'ldconfig -v' to see what's going on). This needs to be done as 
root.
To check which library your application actually does link to run:

 ldd /usr/local/bin/mycoolapp | grep fluidsynth


HTH Ralf Mattes

>
> On 08/09/2017 22:46, Tom M. wrote:
> > I guess that you have libfluidsynth.so installed somewhere in
> > /usr/lib/ and this one was compiled without alsa support. If this is
> > the case, when starting ./fluidsynth_simple it doesnt find
> > libfluidsynth.so in the current working directory and uses the one in
> > /usr/lib/. Either remove that installation or set LD_LIBRARY_PATH like:
> >
> > export LD_LIBRARY_PATH=/path/to/custom/libfluidsynth.so:$LD_LIBRARY_PATH
> >
> > Or build fluidsynth_simple with a statically linked libfluidsynth.a of
> > which you know it was compiled with alsa support.
> >
> > Tom
> >
> > 2017-09-08 15:25 GMT+02:00 mike <address@hidden
> > <mailto:address@hidden>>:
> >
> >
> >     Hi All, I successfully used 'cmake' and 'make' to produce the
> >     fluidsynth executable. Running
> >
> >     ./fluidsynth -a alsa FluidR3_GM.sf2 LUTE.mid
> >
> >     played the MIDI file perfectly.
> >
> >     I then compiled the example fluidsynth_simple.c, and linked it
> >     against libfluidsynth.so
> >     The only change I made to fluidsynth_simple.c was to add the line
> >     selecting ALSA before selecting the audio driver.
> >
> >             fluid_settings_setstr(settings, "audio.driver", "alsa");
> >             adriver = new_fluid_audio_driver(settings, synth);
> >
> >     Ran it:- ./fluidsynth_simple FluidR3_GM.sf2
> >
> >     This is the result:
> >
> >     fluidsynth: warning: Failed to pin the sample data to RAM;
> >     swapping is possible.
> >     fluidsynth: error: Couldn't find the requested audio driver alsa.
> >     Valid drivers are: file, oss.
> >     Failed to create the audio driver.
> >
> >     Any help in using ALSA with the library would be appreciated.
> >
> >     Regards, Mike
> >
> >     Platform: Ubuntu 16.04.3 LTS, x86_64
> >     fluidsynth: 1.1.7
> >
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> >
> >
> >
> >
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