gcc -g -O2 -Wall -g -o syslog-ng main.o libsyslog-ng.a -lnsl -lrt -Wl,-Bstatic -lfl -L/home/kundapur/GLIB-2.12.9/lib -lglib-2.0 -L/usr/local/lib -levtlog -lwrap -Wl,-Bdynamic libsyslog-ng.a(misc.o)(.text+0x3a9): In function `resolve_hostname': /home/kundapur/suma/syslog-ng-2.0.4/src/misc.c:191: undefined reference to `g_assert_warning' libsyslog-ng.a(logmsg.o)(.text+0x6a): In function `log_stamp_format': /home/kundapur/suma/syslog-ng-2.0.4/src/logmsg.c:110: undefined reference to `g_assert_warning' libsyslog-ng.a(logmsg.o)(.text+0x2b6): In function `log_msg_ref': /home/kundapur/suma/syslog-ng-2.0.4/src/logmsg.c:498: undefined reference to `g_assert_warning' libsyslog-ng.a(logmsg.o)(.text+0x342): In function `log_msg_unref': /home/kundapur/suma/syslog-ng-2.0.4/src/logmsg.c:512: undefined reference to `g_assert_warning' libsyslog-ng.a(logmsg.o)(.text+0xe36): In function `log_msg_ack_block_end': /home/kundapur/suma/syslog-ng-2.0.4/src/logmsg.c:648: undefined reference to `g_return_if_fail_warning' libsyslog-ng.a(logpipe.o)(.text+0x4f): In function `log_pipe_ref': /home/kundapur/suma/syslog-ng-2.0.4/src/logpipe.c:38: undefined reference to `g_assert_warning' libsyslog-ng.a(logpipe.o)(.text+0x9b): In function `log_pipe_unref': /home/kundapur/suma/syslog-ng-2.0.4/src/logpipe.c:47: undefined reference to `g_assert_warning' libsyslog-ng.a(center.o)(.text+0x7d): In function `log_endpoint_free': /home/kundapur/suma/syslog-ng-2.0.4/src/center.c:90: undefined reference to `g_assert_warning' libsyslog-ng.a(center.o)(.text+0x175): In function `log_connection_new': /home/kundapur/suma/syslog-ng-2.0.4/src/center.c:132: undefined reference to `g_assert_warning' libsyslog-ng.a(templates.o)(.text+0x2de): In function `log_template_ref': /home/kundapur/suma/syslog-ng-2.0.4/src/templates.c:180: undefined reference to `g_assert_warning' libsyslog-ng.a(templates.o)(.text+0x346):/home/kundapur/suma/syslog-ng-2.0.4/src/templates.c:191: more undefined references to `g_assert_warning' follow collect2: ld returned 1 exit status make[2]: *** [syslog-ng] Error 1 make[2]: Leaving directory `/home/kundapur/suma/syslog-ng-2.0.4/src' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/home/kundapur/suma/syslog-ng-2.0.4' make: *** [all] Error 2 I installed glib-2.12.9. -- $ cat glib.c # include <glib.h> int main ( void ) { printf ( "glib version = %d.%d.%d\n", glib_major_version, glib_minor_version, glib_micro_version ); return 0; } $ cc glib.c `pkg-config --cflags --libs glib-2.0` $ a.out glib version = 2.12.9 -- Still I'm getting these messages. Any idea about this? Thanks, Ganesh