[syslog-ng] error installing

Any idea how to fix this? /home/admin/syslog-ng-1.6.10/src/cfg-lex.c:1126: undefined reference to `yywrap' collect2: ld returned 1 exit status make[3]: *** [syslog-ng] Error 1 make[3]: Leaving directory `/home/admin/syslog-ng-1.6.10/src' make[2]: *** [all-recursive] Error 1 make[2]: Leaving directory `/home/admin/syslog-ng-1.6.10/src' make[1]: *** [all] Error 2 make[1]: Leaving directory `/home/admin/syslog-ng-1.6.10/src' make: *** [all-recursive] Error 1