cpp vs. m4 for .s files

[Doug Gwyn]

In article <1991May1.192158.13352 at sctc.com> scott at sctc.com (Scott Hammond) writes:
-Unix source tends to use m4 for macro and constant substitution.
-I was asked why cpp wouldn't work just as well, but I don't know.  Is
-there any reason one way or the other for choosing m4 vs. cpp for
-assembly language files?

Don't use cpp for anything, please.  It need not even exist.