The Include Files
All Ingres DTP application servers must include the “xa.h” and “iixa.h” header files, located in the $II_SYSTEM/ingres/files subdirectory. To include the required header files, use the following lines of C code:
#include <xa.h>
#include <iixa.h>
When you compile your application, you must specify the following option on the cc command line:
-i $II_SYSTEM/ingres/files