Re: alsa-lib compatibility

[Lee Revell <rlrevell@joe-job.com>]

On Wed, 2006-01-18 at 09:48 +0100, Jaroslav Kysela wrote:
> On Wed, 18 Jan 2006, Lee Revell wrote:
> 
> > On Wed, 2006-01-04 at 10:12 +0100, Jaroslav Kysela wrote:
> > > Hi,
> > > 
> > > 	it seems that it is quite required (based on current LKML 
> > > discussion) to keep the alsa-lib compatibility with old drivers. Please, 
> > > keep in mind that for example renaming of control names will break using 
> > > old 2.6 kernel with new alsa-lib.
> > > 	The alsa-lib C code already checks for older drivers, but
> > > the extended configuration (like 5.1, s/pdif devices) in most cases
> > > changes a lot. We should add some runtime checks which driver version
> > > is running in XXXXX.conf files and apply the old behaviour if required.
> > > 
> > > 				Any comments?
> > > 						Jaroslav
> > > 
> > 
> > How do you propose we solve this problem:
> > 
> > /usr/lib/mozilla-firefox/firefox-bin: relocation
> > error: /usr/lib/libalsatoss.so.0: symbol
> > snd_pcm_hw_params_set_rate_near, version ALSA_0.9.0rc4 not defined in
> > file libasound.so.2 with link time reference
> 
> Hmm. It should work. The libasound.so.2 should have this symbol defined:
> 
> perex@tm8103:~/alsa/alsa-lib/src/.libs> nm libasound.so.2 | grep rate_near | grep rc4
> 00041460 T snd_pcm_hw_params_set_rate_near@@ALSA_0.9.0rc4
> 
> and the libalsatoss.0.0.0:
> 
> perex@tm8103:~/alsa/alsa-oss/alsa> nm .libs/libalsatoss.0.0.0  | grep rate_near
>          U snd_pcm_hw_params_set_rate_near@@ALSA_0.9.0rc4
> 
> Could you check it?
> 

I got different output.  But, I think the problem was I forgot to
install the newer alsa-oss.

$ nm /usr/lib/libasound.so.2.0.0 | grep rate_near
00044f63 t __old_snd_pcm_hw_params_set_rate_near
00040ff5 T __snd_pcm_hw_params_set_rate_near
00040ff5 W snd_pcm_hw_params_set_rate_near

$ nm /usr/lib/libalsatoss.so.0.0.0 | grep rate_near
         U snd_pcm_hw_params_set_rate_near@@ALSA_0.9.0rc4

Lee




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