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Date:      Wed, 14 Aug 2002 13:20:27 +0000
From:      Philip Reynolds <philip.reynolds@rfc-networks.ie>
To:        freebsd-current@freebsd.org
Subject:   Re: CFLAGS=-O and WARN=5
Message-ID:  <20020814132027.C56368@rfc-networks.ie>
In-Reply-To: <7md6slpxr1.wl@black.imgsrc.co.jp>; from kuriyama@imgsrc.co.jp on Wed, Aug 14, 2002 at 06:58:58PM %2B0900
References:  <7md6slpxr1.wl@black.imgsrc.co.jp>

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Jun Kuriyama <kuriyama@imgsrc.co.jp> 22 lines of wisdom included:
> 
> When I tried make world with CFLAGS="-g -pipe" in make.conf, I got
> a result below.
> 
> Is buildworld without CFLAGS=-O not supported?
> 
> ===> bin/df
> cc -pipe -g  -I/usr/src/bin/df/../../sbin/mount   -Werror -Wall -Wno-format-y2k -W -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Wreturn-type -Wcast-qual -Wwrite-strings -Wswitch -Wshadow -Wcast-align -Wuninitialized -Wformat=2 -Wno-format-extra-args -Werror  -c /usr/src/bin/df/df.c
> cc1: warnings being treated as errors
> cc1: warning: -Wuninitialized is not supported without -O
> *** Error code 1

The problem here, as is fairly self-evident is that you cannot
compile with -Wuninitialized without a -O flag because it produces
warnings that can only be seen through optomisation (it's got to do
with automatic variables, see gcc(1) for details).

See if this flag exists in /etc/defaults/make.conf, probably in
BDECFLAGS, and remove it.

Regards,

-- 
Philip Reynolds                      | RFC Networks Ltd.
philip.reynolds@rfc-networks.ie      | +353 (0)1 8832063
http://people.rfc-networks.ie/~phil  | www.rfc-networks.ie

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