Re: [GIT PULL 00/24] perf/core improvements and fixes

[Jiri Olsa]

On Fri, Mar 13, 2015 at 01:34:51PM +0100, Ingo Molnar wrote:
> 
> * Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> wrote:
> 
> > Infrastructure:
> 
> > . Fix libbabeltrace detection (Jiri Olsa)
> 
> So this still doesn't seem to work for me:
> 
> ...                 libbabeltrace: [ OFF ]
> 
> it should really not be included in the default build until the 
> required library features are more widely available in distros.

the patch that moves babeltrace out of default
check wasn't pulled in yet:

http://marc.info/?l=linux-kernel&m=142606453815125&w=2

also note there's another bug in test-all that prevents
the test-all speed up, fixed by this patch:

http://marc.info/?l=linux-kernel&m=142606452415123&w=2

> 
> I think we should only use library features by default that are 
> available in the latest Fedora, SuSE and Ubuntu distros. We want them 
> to build and package perf and there's little point in adding features 
> that won't work on packaged up perf.

I think we should have the possibility to work and commit new
features even if the support is not yet in the main distros

for such features we could:
  - leave those features out of the default features check
    like we'll do for babeltrace
  - maybe use some sort of EXPERIMENTAL config option dependency
    once we have the .config file support ;-)

jirka
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