FP_CONVERT_CPU fails to convert CPU when invoked from bindist

Trying to pass --target=arm-linux-gnueabihf to a ARM 8.0.2 bindist's configure on my AArch64 box fails with,

$ ./configure --prefix=/mnt/ext/arm/roots/ghc/8.0.1-armv7 --target=arm-linux-gnueabihf
checking for path to top of build tree... /mnt/ext/arm/ghc-8.0.2
Build platform inferred as: arm-unknown-linux
Host platform inferred as: arm-unknown-linux
Unknown CPU

Trac metadata

Trac field	Value
Version	8.0.1
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Build System
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