[FFmpeg-devel] [PATCH 2/3] build: rely on pkg-config for libx264 probing

Clément Bœsch u at pkh.me
Thu Aug 28 15:30:06 CEST 2014

On Thu, Aug 28, 2014 at 01:18:55PM +0000, Carl Eugen Hoyos wrote:
> Clément Bœsch <u <at> pkh.me> writes:
> > > Did you try the patch with pkg-config only detection?
> > > 
> > > And try to add --pkg-config=true to trick the detect function.
> > 
> > So, I did try myself
> Sorry, I was away and still didn't test all new 
> tickets.
> > [~/src/ffmpeg]☭ dash ./configure --disable-everything 
> > --enable-gpl --enable-libx264 --pkg-config=/bin/true
> > --extra-ldflags=-lx264
> The extra-ldflags should not be necessary.

Well, it's incomplete depending on the situation so we don't want it in
the configure (Cf my mail about testing such things) and you're probably
setting --extra-ldflags already for your custom paths.

Also, you need to add --pkg-config=true anyway, so you can do the effort
to add -lx264 as well.

> I still wonder why --pkg-config=/bin/true is 
> necessary: If another version (than the one intended 
> by the user) is found then he has a bad system 
> installation (and has to use above work-around). 
> But if no installation can be found, the work-around 
> should be tested by configure.

Unless I misunderstood the question, it will; --pkg-config=true will just
make the fake pkg-config raise no flags, and then compilation will be
tried with those empty flags (and the --extra-{c,ld}flags).

Clément B.
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