> Actually I am using the carbide 2.0 and i am sure that i am linkin the > pjmedia codec for the platform. All the header files seems to include > properly. How are you sure you're linking correctly? I only ask because the following error: >> > pjsua_media.c:(.text+0x200): undefined reference to >> > `pjmedia_codec_passthrough_init'?? ?pjproject-1.2?? ??? ?line 0?? ?C/C++ is a textbook example of a link-time error. The compiler found a function prototype for pjmedia_codec_passthrough_init because, as you say, all the header files are indeed included properly. However, the above message arises because the linker cannot find any symbol pjmedia_codec_passthrough_init. It probably cannot find it because either: 1) there's no -lpjmedia-codec-* specified, or 2) -lpjmedia-codec is specified after -lpjmedia, so libpjmedia-codec isn't getting searched for unresolved symbols in libpjmedia. If resolving the above doesn't solve the problem, then posting the complete output of the command-line, including the commands run, would help a lot (no matter what the error is). John G
