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Re: crosstool-0.27 demo-arm.sh fail


Ming Zhang wrote:
Hi, I try to build crosstool-0.27 with demo-arm.sh and it failed. while
the demo-arm-softfloat.sh is ok. then i have a dumb question. what is
the difference between these two? i mean what is the softfloat? i
assumed that it is some float library implemented in software instead of
computing it in hardware. :P

softfloat doesn't work without a patch; don't use it for now...


most arm hardware doesn't have floating point in hardware,
but rather emulates the fp instructions in software.
This emulation is slow.
softfloat gets around this, and directly calls the fp software routines,
so it's supposed to be faster.  This is nonstandard but increasingly
popular.
Or so I hear.
- Dan

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