Gstalker

I found some errors after comments this line
Making all in src
make[2]: Wchodzę katalog `/opt/gstalker/src'
gcc -DHAVE_CONFIG_H -I. -I. -I.. -I.. -I/usr/local/include -I/usr/include/gnome-1.0 -DNEED_GNOMESUPPORT_H -I/usr/lib/gnome-libs/include -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/include/orbit-1.0 -I/usr/include/gtk-1.2 -I/usr/X11R6/include -DG_LOG_DOMAIN=\"gstalker\" -DGNOMELOCALEDIR=\""/usr/local/share/locale"\" -I../intl -I../intl -g -O2 -Wall -Wunused -c callbacks.c
make[2]: Opuszczam katalog `/opt/gstalker/src'
make[1]: Opuszczam katalog `/opt/gstalker'
cc1: warning: changing search order for system directory "/usr/local/include"
cc1: warning: as it has already been specified as a non-system directory
callbacks.c: In function `download_error':
callbacks.c:523: `ERRHOST' undeclared (first use in this function)
callbacks.c:523: (Each undeclared identifier is reported only once
callbacks.c:523: for each function it appears in.)
callbacks.c:526: `ERRSOCK' undeclared (first use in this function)
callbacks.c:529: `ERRCONN' undeclared (first use in this function)
callbacks.c:532: `ERRWHEA' undeclared (first use in this function)
callbacks.c:535: `ERRRHEA' undeclared (first use in this function)
callbacks.c:538: `ERRPAHD' undeclared (first use in this function)
callbacks.c:541: `ERRPCSV' undeclared (first use in this function)
callbacks.c:544: `ERRPROX' undeclared (first use in this function)
callbacks.c:547: `ERRDATE' undeclared (first use in this function)
callbacks.c:550: `ERRDATA' undeclared (first use in this function)
callbacks.c:553: `ERRRANG' undeclared (first use in this function)
make[2]: *** [callbacks.o] Błąd 1(error1)
make[1]: *** [all-recursive] Błąd 1(error1)
make: *** [all-recursive-am] Błąd 2 (error 2)

what have I to do with this?