foreign import from RTS into GHC source
I'm adding a foreign import in a GHC module from the RTS. I'm using a CPP directive to avoid the import in the stage1 compiler, since the RTS function I need doesn't necessarily exist in that version of the RTS.
#if STAGE < 2 … -- make do without the import #else … -- do the import and use it #endif
Do you have any criticism of this overall design? EG Is there a preference to use Config.cStage instead of CPP and the STAGE symbol? Thanks. P.S. — for some context, this is for Solution 1 at http://ghc.haskell.org/trac/ghc/wiki/Plugins/ReinitializeGlobals
On Wed, Jul 10, 2013 at 04:26:23PM -0500, Nicolas Frisby wrote:
I'm adding a foreign import in a GHC module from the RTS. I'm using a CPP directive to avoid the import in the stage1 compiler, since the RTS function I need doesn't necessarily exist in that version of the RTS.
EG Is there a preference to use Config.cStage instead of CPP and the STAGE symbol?
It's always better to not use CPP if possible, but in this instance you'd presumably get a missing-symbol error, so CPP is necessary. Thanks Ian -- Ian Lynagh, Haskell Consultant Well-Typed LLP, http://www.well-typed.com/
participants (2)
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Ian Lynagh -
Nicolas Frisby