[FFmpeg-devel] [PATCH]Allow libspeex detection also without pkg-config

[Reimar Döffinger]

On Wed, Dec 31, 2014 at 02:23:06PM +0100, Clément Bœsch wrote:
> On Wed, Dec 31, 2014 at 02:02:20PM +0100, Reimar Döffinger wrote:
> [...]
> > There is also a (minority) of projects with pkg-config files that
> > cause undesirable side-effects which can hide errors.
> > From my system:
> > 1) SDL and apr add  -D_GNU_SOURCE=1
> > 2) fuse adds -D_FILE_OFFSET_BITS=64
> > 3) xorg-server adds -fvisibility=hidden
> > 
> 
> Note that if the flags are somehow wrong, you can either:
>  1) edit the .pc file to raise different flags
>  2) use --pkg-config=/bin/true --extra-ldflags=... --extra-cflags=...

1) certainly has a whole lot of problems when it's a
distribution-provided file that you are editing.
and 2) means you suddenly have to provide -lsomething for each and
every library, not just those that you are missing a .pc file for
(usually because you only have a local compiled version of the library).