Re: [GCC6] fatal error: You must enable NEON instructions (e.g. -mfloat-abi=softfp -mfpu=neon) to use these intrinsics.

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On 02/18/2016 08:37 PM, Kevin Kofler wrote:
> Peter Robinson wrote:
>> It's an issue we see occasionally where the package thinks it knows
>> better than the explicit CFLAGs being set, I'll get it sorted out.
> 
> But why are those intrinsics now requiring NEON at all? Those are GCC byte 
> swap intrinsics documented as being architecture-independent and should be 
> implemented in software (through shifts or rotates) when there is no native 
> byte swap instruction.
> 
> And is Fedora actually requiring NEON as the baseline on ARM? I thought it 
> was not.

We require an ARMv7A or newer and a VFP with enough registers to support
the hard ABI e.g. -march=armv7-a -mfloat-abi=hard -mfpu=vfpv3-d16

The message in the header error is only an example.

Cheers,
Carlos.
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