Re: [linux-audio-dev] [ANN] swh plugins release

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Subject: Re: [linux-audio-dev] [ANN] swh plugins release
From: Mike Rawes (mike_rawes_AT_yahoo.co.uk)
Date: Wed Dec 03 2003 - 12:41:05 EET


 --- Joern Nettingsmeier <nettings_AT_folkwang-hochschule.de> wrote: > Steve
Harris wrote:
> > On Wed, Dec 03, 2003 at 09:41:30AM +0100, Joern Nettingsmeier wrote:
> >
> >>builds fine, except for those warnings:
> >>
> >>ladspa-util.h: In function `f_trunc':
> >>ladspa-util.h:110: warning: dereferencing type-punned pointer will break
> >>strict-aliasing rules
> >
> >
> > Very true, but I dont think I asked to compiler to use strict aliasing,
> > can you send an example gcc line make spits out? I've checked a fix into
> > CVS that should stop alising for most people anyway.
>
> gcc -DHAVE_CONFIG_H -I. -I. -I. -g -O2 -Wall -O6
> -fomit-frame-pointer -fstrength-reduce -funroll-loops
> -fmove-all-movables -ffast-math -fPIC -DPIC -mcpu=i686 -march=i686 -c
> imp_1199.so.c

-O2 will include the -fstrict-aliasing flag for gcc, so it's turned on here.
I've no idea what -O6 does (intel compiler, pgcc?). -O3 is the highest in the
gcc documentation.

Mike

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