[cvs-nhc98] Status of nhc98 on 64bit platforms
Malcolm Wallace
Malcolm.Wallace at cs.york.ac.uk
Thu Feb 22 05:12:29 EST 2007
Sven Panne <sven.panne at aedion.de> writes:
> Just out of curiosity, I've just tried to build and install nhc98 from the
> darcs repo on an x86_64 Linux platform
>
> So what is the current status on 64bit platforms?
nhc98 does not support 64-bit platforms, it is 32-bit only. However,
judging from the fact that I am able to build nhc98 just fine on a
64-bit PowerPC G5, the story is a little more nuanced than that.
Apple's gcc is configured to use the 32-bit ABI by default (the -m32
flag). I am guessing that your Linux box has gcc configured with -m64
as the default. So perhaps if you can work out how to pass -m32 to all
the C compiler invocations (including those that compile the bytecode
output of the nhc98 compiler proper into C arrays)?
Unfortunately,
./configure --buildopts="-m32"
is not the right thing - it only applies to the bootstrapping Haskell
compiler.
> Are the problems fixable within a reasonable timeframe?
Of course, using the 32-bit ABI is only a workaround I suppose.
Ultimately it should work in native 64-bit mode as well. nhc13 did once
support the alpha processor, but that was in the days when it generated
assembly code containing the bytecodes, rather than C arrays. Yhc fixes
this properly by storing the bytecode in an independent format, and
loading it explicitly into memory at runtime.
Regards,
Malcolm
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