installing KSMPPD on linux

I have an error while compiling an SMPP gateway KSMPPD Below need help with below error.

In file included from libsmpp/smpp_bearerbox.c:77:0:
libsmpp/smpp_route.h:65:28: fatal error: gwlib/gw-regex.h: No such file or directory
#include "gwlib/gw-regex.h"
^
compilation terminated.
make[2]: *** [libsmpp/libsmpp_la-smpp_bearerbox.lo] Error 1
make[2]: Leaving directory `/root/ksmppd/smpp'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/root/ksmppd'
make: *** [all] Error 2

Please assist resolve