Hi, I am new at pjsip. I tried to install pjsip like it is on web: http://trac.pjsip.org/repos/wiki/Getting-Started/Autoconf There was no error untill last command "make install" Here is last line of output : make: *** [install] Error 1 When i'm trying to compile sample ( gcc -I/usr/local/include -L/usr/local/lib -lpj level.c ) i get this output: /tmp/ccu9mti9.o: In function `app_perror': level.c:(.text+0x14): undefined reference to `pj_strerror' /tmp/ccu9mti9.o: In function `main': level.c:(.text+0x8f): undefined reference to `pj_init' level.c:(.text+0xcd): undefined reference to `pj_pool_factory_default_policy' level.c:(.text+0xd9): undefined reference to `pj_caching_pool_init' level.c:(.text+0xf3): undefined reference to `pjmedia_endpt_create' level.c:(.text+0x14a): undefined reference to `pj_pool_create' level.c:(.text+0x177): undefined reference to `pjmedia_wav_player_port_create' level.c:(.text+0x23b): undefined reference to `pjmedia_port_get_frame' level.c:(.text+0x257): undefined reference to `pjmedia_calc_avg_signal' level.c:(.text+0x26b): undefined reference to `pjmedia_linear2ulaw_tab' level.c:(.text+0x386): undefined reference to `pjmedia_port_destroy' level.c:(.text+0x3c8): undefined reference to `pj_pool_release' level.c:(.text+0x3da): undefined reference to `pjmedia_endpt_destroy' level.c:(.text+0x3ec): undefined reference to `pj_caching_pool_destroy' level.c:(.text+0x3f4): undefined reference to `pj_shutdown' collect2: ld returned 1 exit status any ideas what i am doing wrong? maciek