Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!cmcl2!nrl-cmf!ames!apple!well!rchrd
From: rchrd@well.UUCP (Richard Friedman)
Newsgroups: comp.sys.apollo
Subject: Predefined symbols in C preprocessor and apollo_$std.n on 10.1
Message-ID: <11792@well.UUCP>
Date: 22 May 89 22:28:51 GMT
Distribution: comp
Organization: RCHRD 2855 Telegraph #415 Berkeley CA 94705
Lines: 35

I recently discovered that contrary to what the new C manual
for 10.1 says on page 4-103, the compiler totally ignores the
file  /usr/include/apollo_$std.h   

In particular, the preprocessor symbols 
       apollo
and    aegis
are defined for every routine compiled with /bin/cc compiler.
For example, the file:
    #include <stdio.h>
    main()
    {
    #ifdef aegis
       printf("  aegis defined\n");
    #endif
    #ifdef apollo
       printf("  apollo defined\n");
    #endif
    }

prints both lines with /usr/include/apollo_$std.h deleted.
It also prints both lines with apollo_$std.h containing the following:
    #undef aegis
    #undef apollo

Does anyone know whats going on here, and how I can prevent the compiler
from defining aegis and apollo short of having to undef them in every
routine.  (This problem arises when trying to compiler KERMIT on 10.1
BSD.  It has conditional code for apollo/aegis (assuming pre 10.1 systems))

(whimper whimper!)
-- 
 ...Richard Friedman           rchrd@well.uucp                      
    (Pacific-Sierra Research/Berkeley, CA.)
     also: {lll-crg,pacbell,hplabs}!well!rchrd