Makefile: add check for CHOST

[jdek]

Generally, cross compilation toolchain prefixes include the '-' at the end. Don't want to change your setup, so just fallback to check a more standard CHOST cross compile if CROSS_TC is unset.

[pgaskin]

I agree that CROSS_TC is less standard than CHOST (I've only seen it in NiLuJe's stuff), but the only place I've seen CHOST is in Gentoo stuff and a few projects. But, I've seen CROSS_PREFIX a bit more, and CROSS_COMPILE is used in the Linux kernel (with the dash).

[jdek]

I'm not really bothered if you want to call it CHOST, CROSS_PREFIX or CROSS_COMPILE, just that it doesn't add an extra -. Which would you merge?

[NiLuJe]

Yeah, CHOST is out because it has a very specific meaning in Gentoo, and you basically shouldn't ever set it yourself anywhere ;).

[NiLuJe]

I have an extremely vague preference for CROSS_PREFIX, since it's also set in my own envs, but, since I'm usually using CROSS_TC myself, I have no strong opinion, both CROSS_PREFIX or CROSS_COMPILE would be fine with me ;).

[jdek]

I set it as CROSS_COMPILE so it's similar to the kernel.

[NiLuJe]

That's perfectly fine with me, thanks! ;).