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To: "PRC" <panruochen@gmail.com>
Cc: David Daney <ddaney@avtrex.com>, Andrew Haley <aph@redhat.com>,         gcc-help <gcc-help@gcc.gnu.org>
Subject: Re: How to traceback call stack on MIPS arch?
References: <200801081007106802280@gmail.com> 	<18307.21985.888303.875264@zebedee.pink> <4783CC42.2040807@avtrex.com> 	<200801091057184139804@gmail.com>
From: Ian Lance Taylor <iant@google.com>
Date: Fri, 11 Jan 2008 09:29:00 -0000
In-Reply-To: <200801091057184139804@gmail.com>
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"PRC" <panruochen@gmail.com> writes:

> -fno-omit-frame-pointer may be what I want, since the programs are running
> in a native embeded system without glibc.
> I have read the gcc manual and noticed the option -fomit-frame-pointer. But
> the manual says nothing about -fno-omit-frame-pointer. Is it a default 
> convention that each -fxxx option has a -fno-xxx counterpart?

Yes, and this convention is documented.

    Many options have long names starting with `-f' or with `-W'--for
    example, -fmove-loop-invariants, -Wformat and so on.  Most of
    these have both positive and negative forms; the negative form of
    -ffoo would be -fno-foo.  This manual documents only one of these
    two forms, whichever one is not the default.

Ian