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From: pbiron@weber.ucsd.edu (Paul Biron)
Newsgroups: comp.sys.next
Subject: Re: Unix | Hardcore | Patch > HELP
Keywords: Patch, gnuplot, gcc, cpp
Message-ID: <4488@network.ucsd.edu>
Date: 12 Jan 91 16:43:22 GMT
References: <1991Jan11.141327.28900@wam.umd.edu>
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Reply-To: pbiron@weber.ucsd.edu (Paul Biron)
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In article <1991Jan11.141327.28900@wam.umd.edu> charlie@wam.umd.edu (Charles William Fletcher) writes:
>I have used Unix for a while now but I'm moving out of my league,
>maybe someone can help me here.
>
>I have been installing some GNU software on my 030 cube (1.0a--will
>I have to do this all again for 2.0? Scary thought.) I finally got
>Gnuplot working (for 2.01 follow Mark Adler's instructions in an 
>earier post; for 2.02, delete all terminals from term.h that don't
>relate to PS or NeXT. But I still haven't got the "set output '|Preview' "
>to work.) Now I want to move to gcc. It seems reasonable(?) that to
>have all this Gnu stuff I should also have Patch for updating.
>When I ran the 'Configure' script for patch, it quit on me when it couldn't
>find a C preprocessor(cpp) (what does it preprocess and for what reason?)

It uses the preprocessor to modify things like the Makefile and a few
include files depending on certain questions you answer during the
Configure process.

>on the NeXT it told me to go find one (the 'Configure' script is
>definite Unix *reading* if nothing else.) Anyway, does such a beast
>exist for the NeXT? Where might I get it and what does it do?
>
>Thanks in advance.
>
>Charlie (Unix "grasshopper")

First of all, I believe you're trying to build an older version of
patch (I told LWall about this a few months ago and I think he's
released another patch for patch).

The problem has to do with differences between ANSI and old pre-
processor behavior.  The problem is that an ANSI preprocessor (which
the cc on NeXT is) is reguired to add a space after variable substitutions.
LWall's check for cpp looks something like:

cat << EOF > test.c
#define ABC abc
#define XYZ xyz
ABC.XYZ
EOF

cc -E test.c > test.out
if [ $contains abc.xyz test.out ]; then
	echo OK
fi

On a machine with ANSI, test.out looks like:

abc. xyz

If you can't find a later release of patch, simply change all of the
'abc.xyz's to 'abc. xyz's in Configure and all should be well.

Also, if I remember right, there are also some conflicts in one of the
include files (ANSI vs old declarations of strcmp(), etc).  I just
commented these declarations out.

Another possiblity is to supply the -bsd flag (this makes cc, which is
actually a modified gcc for those that don't know, forget about ANSI).

One last thing, add the -lsys_s library flag to link with the shared
libraries.

Hope this helps,

Paul Biron     garp!pbiron@keynes.ucsd.edu    (can have NeXT attachments)
SnUG/SIGHaCK        pbiron@ucsd.edu            (normal net mail)

"Outside of a dog, a book is man's best friend.
 Inside of a dog, it's too dark to read."
                         --Groucho Marx

Paul Biron      pbiron@ucsd.edu        (619) 534-5758
Central University Library, Mail Code C-075-R
Social Sciences DataBase Project
University of California, San Diego, La Jolla, Ca. 92093