WORKS!! Thanks a lot. In my penguin nothing was wrong, its the build.mak file which need to use for to collect all the -l (small L) liners (there is PJ linker + Third party linker, manually we can make PJ linker only, but third party linker are build by build.mak file which is located in root trunk directory) Hello World - Tutorial 1 Red Hat Penguin ============================== ########################## # My application directory: ########################## [root at example mysip]# tree . ??? Makefile ??? myapp ??? myapp.c ??? myapp.cpp ########################## # @file: myapp.c ########################## #include <pjlib.h> #include <pjlib-util.h> #include <pjmedia.h> #include <pjmedia-codec.h> #include <pjsip.h> #include <pjsip_simple.h> #include <pjsip_ua.h> #include <pjsua-lib/pjsua.h> int main(int argc, char *argv[]) { pj_status_t status; status = pjsua_create(); return 0; } ######################### # @file: Build/Compile - 2 choice ######################### Choice 1. Makefile automatic ------------------------------------------ # # Step - 1 # @build.mak file is very import here # PJBASE=/home/sun/Downloads/pjsip/trunk include $(PJBASE)/build.mak # # Step - 2 # values are used from build.mak file # all: myapp myapp: myapp.c $(CC_NAME) $@.c -o $@ $(APP_LDLIBS) clean: rm -f myapp.o myapp Choice 2. GCC by hand ---------------------------------- gcc myapp.c -o myapp -lpjsua-i686-pc-linux-gnu -lpjsip-ua-i686-pc-linux-gnu -lpjsip-simple-i686-pc-linux-gnu -lpjsip-i686-pc-linux-gnu -lpjmedia-codec-i686-pc-linux-gnu -lpjmedia-i686-pc-linux-gnu -lpjmedia-audiodev-i686-pc-linux-gnu -lpjnath-i686-pc-linux-gnu -lpjlib-util-i686-pc-linux-gnu -lresample-i686-pc-linux-gnu -lmilenage-i686-pc-linux-gnu -lsrtp-i686-pc-linux-gnu -lgsmcodec-i686-pc-linux-gnu -lspeex-i686-pc-linux-gnu -lilbccodec-i686-pc-linux-gnu -lg7221codec-i686-pc-linux-gnu -lportaudio-i686-pc-linux-gnu -lpj-i686-pc-linux-gnu -lm -lnsl -lrt -lpthread Conclusion: ========= SO, i pass my PJ level 1, cake is served, moving next level. Many thanks Best regards Shamun -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20100801/71b7a4c4/attachment.html>