i tried to build the samples project , but it give me this error message: 22>LINK : fatal error LNK1181: cannot open input file 'Iphlpapi.lib' i tried to add the .lib but i don't know how to do this using the makefile please help? BR -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20140605/89d702b6/attachment.html>