From mboxrd@z Thu Jan  1 00:00:00 1970
From: doug@cs.dartmouth.edu (Doug McIlroy)
Date: Sun, 03 Aug 2014 23:56:02 -0400
Subject: [TUHS] Subject:   changes for modern -> v7 -> v6 -> v5
Message-ID: <201408040356.s743u23Y008576@coolidge.cs.dartmouth.edu>

> no conditional compilation so no way to make a truly universal version
> which works on everything.

If cc -I is there, it should be able to do the tailoring.

Also conditional compilation of non-declaration statements can
be replaced by regular if statements that typically can be
optimized away (though the old C compilers may not do so).


Incidentally, I would say that the use of conditional compilation
is evidence that the code is NOT truly universal, but has to be
specially adapted to various environments.

Doug