Tollef Fog Heen <tfheen <at> err.no> writes:
> ]] Jaromír Mikeš
>
> > Aha ... so these default flags are added by compiler and they are not
> > controlled by debian tools at all?
> > Can I see somewhere default flags for different archs?
>
> run gcc -dumpspecs on the different platforms and you can see them.
No, that won’t display them either.
gcc/gcc/config/i386/i386.[ch] and …/linux*.h would have them, for example
(shortened):
if (TARGET_64BIT)
{
/* Enable by default the SSE and MMX builtins. */
target_flags |= (MASK_SSE2 | MASK_SSE | MASK_MMX |
MASK_128BIT_LONG_DOUBLE);
ix86_fpmath = FPMATH_SSE;
}
else
{
ix86_fpmath = FPMATH_387;
}
bye,
//mirabilos
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