Compiling OSF1 w/Enhanced Security HELP!

[DEMARCAO at sysadm.suny.edu]

Hi,

When I try to compile for Enhanced security on a Dec Alpha running
Dec Unix 4.0b I get the following error:

cc: Severe: /usr/include/prot.h, line 71: Cannot find file <acl.h> specified
in.
#include <acl.h>

It seems it can't find the file. Where do I get this file from?? Please
help..

- Alex DeMarco