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Re: CC, CFLAGS, and -m32 [was Re: Pretest compilation problem]

From: Chong Yidong
Subject: Re: CC, CFLAGS, and -m32 [was Re: Pretest compilation problem]
Date: Sat, 19 Feb 2011 12:39:00 -0500
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.0.50 (gnu/linux)

Paul Eggert <address@hidden> writes:

> On 02/16/2011 07:16 PM, Glenn Morris wrote:
>> I've seen this advertized elsewhere, and it's off-topic for Emacs, but
>> can you explain this to me?
> It's to cater to a common usage, where one does
> "configure CC='cc -m32'; [edit]; make CFLAGS=-g".
> "configure" may decide to use "-g -O2", but you may find it easier
> to compile with plain -g than with -g -O2, because it's easier to debug
> code that isn't optimized.
> If instead you use "configure CC=cc CFLAGS=-m32", it's more of
> a pain: "configure" won't set all the CFLAGS for you, and when
> you run "make" yourself you need to say "make CFLAGS='-m32 -g'".

Nonetheless, there should be no downside for us to add CFLAGS to this
Makefile rule, correct?  If you know of any risk, let me know.

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