Hello I'm new to PJSIP and try to port it to FreeBSD When i use this in Makefile # Not build with this. .if ${PORT_OPTIONS:MV4L} @${ECHO_CMD} "#define PJMEDIA_HAS_VIDEO" >> ${WRKSRC}/pjlib/include/pj/config_site.h .endif get this port test ... gcc -c -Wall -DPJ_AUTOCONF=1 -O2 -DPJ_IS_BIG_ENDIAN=0 -DPJ_IS_LITTLE_ENDIAN=1 ... /srtp/include \ -o output/pjmedia-x86_64-unknown-freebsd9.0/avi_player.o \ ../src/pjmedia/avi_player.c ../src/pjmedia/avi_player.c:35:54: error: operator '!=' has no left operand gmake[2]: *** [output/pjmedia-x86_64-unknown-freebsd9.0/avi_player.o] Error 1 gmake[2]: Leaving directory `/var/tmp/ports/usr/local/ports/local/pr/net/pjsip/work/pjproject-2.0.1/pjmedia/build' gmake[1]: *** [pjmedia] Error 2 gmake[1]: Leaving directory `/var/tmp/ports/usr/local/ports/local/pr/net/pjsip/work/pjproject-2.0.1/pjmedia/build' gmake: *** [all] Error 1 *** Error code 2 Stop in /usr/local/ports/local/pr/net/pjsip. *** Error code 1 Stop in /usr/local/ports/local/pr/net/pjsip. ===> Error running make build ===> Cleaning up Without this Setting for V4L PJSiP compile good. Please correct this, thanks.