error when installing digi-portserver-TS-8-IN suse 11 sp 4

I want to install digi portserver TS on suse 11sp 4 when i run the installaion I have the following error:

gcc -O2 -g -W -Wall -DLINUX -I./inc -c os/linux.c -o linux.o
gcc -O2 -g -W -Wall -DLINUX -I./inc -c -o main.o main.c
main.c:29:20: error: panel.h: No such file or directory
In file included from main.c:47:
./inc/curses_helpers.h:50: error: expected specifier-qualifier-list before ‘PANE L’
make[2]: *** [main.o] Error 1
make[2]: Leaving directory /incoming/dgrp-1.9/dparp' make[1]: *** [linux] Error 2 make[1]: Leaving directory /incoming/dgrp-1.9/dparp’
make: *** [build] Error 2