[FFmpeg-devel] [PATCH] Revert "Autodetect libxcb."
u at pkh.me
Thu Feb 5 22:37:07 CET 2015
On Thu, Feb 05, 2015 at 10:33:38PM +0100, wm4 wrote:
> On Thu, 5 Feb 2015 22:11:22 +0100
> Clément Bœsch <u at pkh.me> wrote:
> > On Thu, Feb 05, 2015 at 04:55:37PM +0100, Nicolas George wrote:
> > > Le sextidi 16 pluviôse, an CCXXIII, Clement Boesch a écrit :
> > > > Linux is not only used by desktop. Debian (for example) might want to
> > > > provide a ffmpeg-nox11 (just like vim-nox11),
> > >
> > > Well, that means they have to put --disable-libxcb when building ffmpeg-nox
> > > instead of having to out --enable-libxcb when building ffmpeg-x. Same
> > > difference.
> > >
> > > (IMHO, they should be specifying both anyways: never rely on defaults and
> > > you never have to worry that defaults may change.)
> > >
> > > As long as both the enable and disable explicit option work, the default
> > > value does not matter much. And in this particular case, considering xcb
> > > like a system library seems more consistent.
> > >
> > So after each release, packagers need to check the configure and make sure
> > there aren't new libraries that will randomly be linked to, and add new
> > flag to make sure it's disabled? They will miss some... Or are you
> > suggesting them to use --disable-everything and add every internal
> > codec/format/filter/protocol/...? (There is no --disable-every-external
> > AFAIK).
> > Packagers don't want to pull new random (huge) dependencies. That means
> > they enable just what they need, and they add the necessary dependencies
> > according to the demand.
> > That is the original reason we don't auto-enable external libraries.
> > libxcb is not more a "system" lib than libx264 is.
> > > Personally, I would like that all libraries support auto-detection, with a
> > > "--auto-all" option to configure to enable it for everything.
> > That's fine with me as well, but we should stick with the non auto-detect
> > behaviour by default. Or in the worst case, allow a
> > --disable-every-external or something like this.
> And why is vaapi considered a system lib?
I'm for disabling it by default as well.
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