Hello! In my solution, where I use PJlib I have project configuration: Configuration Properties->C/C++->General->Additional Include Directories add D:\PJSIP\SDL-1.3.0-6091\include\ also don't forget add library and folder with pjlibs to Linker properties D:\PJSIP\SDL-1.3.0-6091\VisualC\SDL\Debug\ -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20120618/1bc302f3/attachment.html>