[Buildroot] [PATCH] package/shairport-sync: fix static builds

[Baruch Siach <baruch@tkos.co.il>]

Hi Yann,

On Sat, Nov 29, 2014 at 02:34:57PM +0100, Yann E. MORIN wrote:
> Because shairport-sync uses AC_CHECK_LIB to find some of the needed
> libraries (opensl, alsa, popt...), it fails to bring in the dependencies
> of those libraries; for example, -lssl requires -lz.
> 
> When doing a dynamically-linked build, those dependent libraries are
> pulled in thansk to the DT_NEEDED ELF tags, but those are not available
> in static libraries.
> 
> Use PKG_CHECK_MODULES instead of AC_CHECK_LIB, and emulate the results
> of AC_CJECK_LIB (i.e. set the HAVE_LIBxxx and the LIBS variable
> appropriately) to minimise the amount of code touched.
> 
> This should fix:
>     http://autobuild.buildroot.net/results/1a5/1a56dbff3583bed0d693508dfc16859086846ecd/
>     http://autobuild.buildroot.net/results/6d5/6d5a8157592f7a2c9469bf71b0453796ef982ab1/
> 
> Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
> Cc: J?rg Krause <jkrause@posteo.de>

SHAIRPORT_SYNC_DEPENDENCIES should now include host-pkgconf, I believe.

baruch

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