From:	"John M. Aldrich" <fighteer AT cs DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: gcc switches
Date:	Tue, 27 Jan 1998 02:04:53 -0500
Organization:	Two pounds of chaos and a pinch of salt.
Lines:	36
Message-ID:	<34CD8715.7C5E@cs.com>
References:	<6ae1lc$gei$1 AT herald DOT Mines DOT EDU>
NNTP-Posting-Host:	ppp205.cs.com
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To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Jean-Luc Romano wrote:
> 
>    Is there any list that can tell me what DJGPP's gcc switches are?
> I've tried "gcc -?", "gcc -h", and "gcc -help" but they don't seem to
> work.

gcc's command line options are far too voluminous to include in a help
listing.  You'd be much better off reading the actual documentation. 
First, download and install 'v2gnu/txi390b.zip', which is the GNU Info
reader.  Then type "info gcc invoking" to learn more than you ever
wanted to know about gcc's switches.  :-)  

A quick summary of the more commonly used switches:

 -o		set output file
 -g		include full debugging information
 -s		strip debugging information (link stage only)
 -O		optimize
 -O[1,2,3,...]  additional levels of optimization
 -Wall		extra (highly valuable) warnings
 -c		compile to object code
 -S		compile to assembly code
 -l<lib>	link lib<lib>.a (must go at end of command line)
 -L<dir>	specify additional library search directory(ies)
 -I<dir>	specify additional include search directory(ies)

Basically, if there's something you want gcc to do, there's a switch to
tell it to do it.

-- 
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|      John M. Aldrich       | "If 'everybody knows' such-and-such, |
|       aka Fighteer I       | then it ain't so, by at least ten    |
|   mailto:fighteer AT cs DOT com   | thousand to one."                    |
| http://www.cs.com/fighteer |                 - Lazarus Long       |
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