[MPlayer-dev-eng] [PATCH] Enable FTZ and DAZ w/ -ffast-math

[Zuxy Meng]

2009/2/10 Diego Biurrun <diego at biurrun.de>:
> On Sun, Feb 08, 2009 at 02:02:20PM +0800, Zuxy Meng wrote:
>>
>> 2009/2/8 Diego Biurrun <diego at biurrun.de>:
>> > On Mon, Feb 02, 2009 at 09:33:08PM +0800, Zuxy Meng wrote:
>> >>
>> >> GCC does a trick to enable FTZ (flush to zero) and DAZ (denormals are
>> >> zeroes) when either -ffast-math or -funsafe-math-optimizations is used
>> >> by linking crtfastmath.o into the executive. It requires the presence
>> >> of one of the options in the final linking stage.
>> >
>> > I don't like CFLAGS being used during the linking stage.  Add those
>> > options to the linker flags instead.
>>
>> Something like COMMON_LDFLAGS += $(findstr, -ffast-math, $CFLAGS)?
>
> No, add it to LDFLAGS in configure in the same place where fast-math is
> added to CFLAGS.


Do we check user specified CFLAGS?

-- 
Zuxy
Beauty is truth,
While truth is beauty.
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