Hi, I follow the instructions here http://www.pjsip.org/pjlib/docs/html/group__pj__dll__target.htm I do the following step 1. Reset libpjproject to DLL (in Project properties -> Configurations properties -> General) 2. Define macro in config_site.h #define PJ_DLL 1 #define PJ_EXPORTING 1 #define PJ_EXPORT_SPECIFIER __declspec(dllexport) #define PJ_IMPORT_SPECIFIER __declspec(dllimport) But I received many errors. Did I do wrong ? How to build pjsip as DLL ? -- Khoa Pham HCMC University of Science Faculty of Information Technology -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20130221/2c98b956/attachment-0001.html>