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From: sorensen@athena.mit.edu (Alma G. Sorensen)
Subject: rcs/diff, and gcc vs  cc
Message-ID: <1991Apr19.151316.26992@athena.mit.edu>
Sender: news@athena.mit.edu (News system)
Organization: Massachusetts Institute of Technology
Date: Fri, 19 Apr 91 15:13:16 GMT
Lines: 24

I'm trying to get rcs working under 2.0.

It tells me rcs needs a diff that does -n or something, which
from the man page A/UX's diff doesn't do. Fine. Gnu's does.

However, when I try to compile gnu's diff-1.15, I get errors:

        gcc -O -DUSG -DSYSV -c diff.c
diff.c: In function compare_files:
diff.c:504: `S_IFDIR' undeclared (first use this function)
diff.c:504: (Each undeclared identifier is reported only once
diff.c:504: for each function it appears in.)
diff.c:504: `S_IFMT' undeclared (first use this function)
Make: *** Error: Update of diff.o terminated with exit code 1
 

Strangely, if I use cc instead of gcc, things compile fine!

I must have gcc installed wrong...What could I be missing?

Thanks,
Greg Sorensen
sorensen@athena.mit.edu