gcc14 on NetBSD 10

[Mark Davies <mark%ecs.vuw.ac.nz@localhost>]

I'm trying to build a package for kquickimageeditor on a NetBSD 10 
machine.  The package requires c++23 so pkgsrc pulls in gcc14.

Part way through the build it dies with:

/tmp//ccweaPa5.s: Assembler messages:
/tmp//ccweaPa5.s:46349: Error: no such instruction: `vmovw %eax,%xmm0'
/tmp//ccweaPa5.s:46382: Error: no such instruction: `vmovw 
(%rsi,%rax,2),%xmm1'
/tmp//ccweaPa5.s:46425: Error: no such instruction: `vmovw 
(%rsi,%rax,2),%xmm1'
/tmp//ccweaPa5.s:46470: Error: no such instruction: `vmovw (%r10),%xmm1'
/tmp//ccweaPa5.s:46524: Error: no such instruction: `vmovw (%rcx),%xmm1'


A quick google suggests that NetBSD 10's assembler is too old for the 
code that gcc14 is generating.  Have we struck this issue with any other 
package?  Is there a fix?

The package is in wip/kquickimageeditor if anyone wants to poke at it.

cheers
mark