Cross Compilation

[Trevor Elliott]

Hi Everyone,

We're starting to update the HaLVM, which produces Xen binaries from 
haskell programs, to a more current version of GHC.  Currently, we build 
a stage1 compiler manually, with some patches to the RTS, and trick it 
into thinking that it's actually stage2 so that we can use template 
haskell.  Ideally, we would like to look at Xen as a cross compilation 
target, as that provides a bit of a better path for keeping up to date 
with changes in GHC.

After reading some of the documentation on the developers wiki about 
cross compilation, it wasn't clear if template haskell is usable by a 
stage1 compiler built where target is not host, is this still the case? 
  If so, what sort of changes would need to be made to enable this, and 
is it something that we could contribute to?

Galois has a little time allocated for updating the HaLVM, and would 
like to position ourselves so that staying up to date with GHC releases 
is easier in the future :)

Thanks!

--trevor

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