diff -up GMT4.5.7/src/misc/gmtdigitize.c.grp GMT4.5.7/src/misc/gmtdigitize.c --- GMT4.5.7/src/misc/gmtdigitize.c.grp 2011-03-03 22:02:51.000000000 +0100 +++ GMT4.5.7/src/misc/gmtdigitize.c 2013-01-12 02:08:19.383313122 +0100 @@ -33,6 +33,8 @@ #include "gmt.h" +#include <sys/types.h> + #ifndef WIN32 #include <termios.h> #endif