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

[Diego Biurrun]

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.

Diego