[icecast] Can't cnfigure it

[Alaios]

Hi there i must present icecast as an exercise in my
university. I have installed libogg-1.0-5 and
libvorbis-1.0-8 as i found them in my fedora cds. 
I run ./configure and i get the message 
checking for ogg_sync in libog... configure: error:
must have Ogg Vorbis v 1.0 installed
What do u suggest me?

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