gmtdigitize.c:83:2: error: unknown type name ‘gid_t’

http://comments.gmane.org/gmane.comp.gis.gmt.user/19549

I am trying to build GMT 4.5.9 on a 64 bit system (OpenSUSE 12.3) and repeatedly getting this message:

gmtdigitize.c: In function ‘main’:
gmtdigitize.c:83:2: error: unknown type name ‘gid_t’
gmtdigitize.c:84:2: error: unknown type name ‘uid_t’
gmtdigitize.c:214:3: warning: implicit declaration of function ‘fdopen’ [-Wimplicit-function-declaration]
gmtdigitize.c:214:7: warning: assignment makes pointer from integer without a cast [enabled by default]
gmtdigitize.c:91:25: warning: variable ‘u_scale’ set but not used [-Wunused-but-set-variable]
gmtdigitize.c:88:9: warning: variable ‘utm_correct’ set but not used [-Wunused-but-set-variable]
gmtdigitize.c:81:76: warning: variable ‘i_unused’ set but not used [-Wunused-but-set-variable]
gmtdigitize.c:78:51: warning: variable ‘not_used’ set but not used [-Wunused-but-set-variable]
make[2]: *** [gmtdigitize.o] Error 1