[PATCH] kselftest: alsa: Use private alsa-lib configuration in mixer test

[Jaroslav Kysela]

On 08. 12. 21 15:14, Mark Brown wrote:
> On Wed, Dec 08, 2021 at 10:55:41PM +0900, Takashi Sakamoto wrote:
> 
>> I'm not positively for the patch since it can take developers puzzled due to
>> the symbol dependency newly introduced in unreleased version of alsa-lib.
> 
> Shouldn't the version check and local definition avoid that issue - if
> the version of alsa-lib doesn't have snd_config_load_string() then we'll
> use a locally defined version of snd_config_load_string() and not depend
> on the alsa-lib symbol?

The 1.2.6 library is released. The goal was to allow to run code with the 
older libraries until the new version is more spread. It's just one #if in the 
source code and a 1:1 code copy. The kselftest packagers should define the 
proper package dependencies for the downgrade possibility - it's distribution 
specific thing.

Anyway, the dynamic linker will print the correct error when the user tries to 
run the test program compiled using the new library on the system with the 
older library.

						Jaroslav

-- 
Jaroslav Kysela <perex at perex.cz>
Linux Sound Maintainer; ALSA Project; Red Hat, Inc.