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From: jbickers@templar.actrix.gen.nz (John Bickers)
Newsgroups: comp.sys.amiga.programmer
Subject: Re: How are some programs SO DAMN SMALL!
Message-ID: <10571.tnews@templar.actrix.gen.nz>
Date: 21 Jan 91 21:42:25 GMT
References: <1991Jan20.210328.18087@hoss.unl.edu>
Organization: TAP, NZAmigaUG.
Lines: 65

Quoted from <1991Jan20.210328.18087@hoss.unl.edu> by 231b3678@fergvax.unl.edu (CS 231 section 2):
> What are steps to compile the smallest Lattice code?  Here are the few that I
> know.

    Some more I've come across, mostly from a document John Toebes (sp?)
    wrote once...

> 1)  Use protos and include files whenever possible.

    If you don't need to your command line parsed, call your main()
    function _main(), or add this line to your BLINK WITH file:

    DEFINE __main=_main

    Otherwise, add this line to your BLINK WITH file:

    DEFINE __main=__tinymain

    In both cases use the XCEXIT() function in place of exit() throughout
    your program, and compile with -v for stack checking off.

    If you don't use the malloc() functions, and don't use floating
    point, you can also add this one:

    DEFINE _MemCleanup=___fpinit

    You also want to use the SC, SD, and ND options with blink.

> Can 'C' code get small?  I have a LIST program in the works.  It's 14000
> bytes compared to c:list's 2500.  Assembly must be the only decent way to

    Once you've done the above, a hello world sort of program has the bulk
    of its code in the c.o module you link with.

        #include <exec/types.h>
        #include <libraries/dos.h>
        #include <proto/dos.h>

        void _main() { Write(Output(),"Hello World\n",12); }

    The next step is to drop the c.o altogether (I think Chuck... argh,
    can't remember the last name, mentioned this a while back), so you
    open whatever libraries you want (don't need Exec, but you may need
    AmigaDOS), etc, and link without c.o.

        #include <exec/types.h>
        #include <libraries/dos.h>
        #include <proto/dos.h>
        #include <proto/exec.h>

        struct Library *DOSBase;

        void    foo()
        {
            DOSBase = OpenLibrary("dos.library",0L);
            Write(Output(),"Hello World\n",12);
            CloseLibrary(DOSBase);
        }

    This, or variations on this...

> Phil Dietz
--
*** John Bickers, TAP, NZAmigaUG.        jbickers@templar.actrix.gen.nz ***
***         "Patterns multiplying, re-direct our view" - Devo.          ***