Issue reported here : http://forum.winehq.org/viewtopic.php?t=7389 Despite having the latest emul-linux-x86-soundlibs package installed (I use it for WINE), I still get this message when I compile WINE from source : libmpg123 32-bit development files not found (or too old), mp3 codec won't be supported. I have been told on the WINE forums that the libmpg123 development files are not included in the package and that WINE needs them in order to have mp3 support. Can someone confirm this and update the package? Thanks!
Headers are not being included in emul packages at all (simply run equery files emul-linux-x86-soundlibs |less to see that they try to only provide libraries) These files are provided by the package itself, I mean, you simply need to have media-sound/mpg123 (anyway you will then hit bug 299490) Regards
And closing per previous comment