Hi, all. I'm using the PJProject 1.0.1 version and Ubuntu 7.10. Currently I try to use all the library provided by Pj project in my application. However, even thought that I succeed in link all the library to my application, yet the error message keep saying that "Undefined symbol: pj_hmac_sha1_init()" However, i did not call that function in my application. After checking, i found that whenever I call a function in the libpjsua, the same error will occur. example: pjsua_create() I had include the pjsua-lib/pjsua.h in my application, but the same error keep on occur. Can anyone please give me a guide? Any possible suggestions are appreciate. Right or wrong I will test it out myself. Thanks 1st sincerely, ws -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20090307/825365ac/attachment.html>