Loading plugin with ghc api
marlowsd at gmail.com
Mon Mar 23 08:27:41 EDT 2009
John O'Donnell wrote:
> I would like to use the API for ghc, so that a running program can load
> a module (Foo.o) and use a function defined in that module. From the
> documentation available, it seems like thatś possible, but I can´t
> figure out how to do it. There is an example on the wiki, but the
> explanation just says the code is equivalent to ghc --make. That example
> does indeed work, but there is no hint as to whether the running program
> can then access anything defined in the module it has just loaded.
> Is there any available documentation on how to load a plugin, or any
> working example somewhere?
Once you have your module loaded, you can call
dynCompileExpr :: GhcMonad m => String -> m Dynamic
to compile an arbitrary expression, yielding a Dynamic value that you can
cast to the appropriate type.
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