Ah,ok, you was right, Benny :) i've added to the user.mak includes for uclinux runtime files and it built (i found the socket stuff there) with some warnings only. another one - i can't build a pj_lib with ssl support - but i think it needs to build an openssl for Blackfin first. Thanks for help and good luck :) > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20091021/51f94049/attachment.html>