Hi Carter, Someone figured it out on #ghc. It seems we need to compile with -dynamic when having TH code now (https://ghc.haskell.org/trac/ghc/ticket/8180)
About a snippet, I working on that ticket ( https://ghc.haskell.org/trac/ghc/ticket/7021) so it's based on the given sample: -- Tuple.hs {-# LANGUAGE ConstraintKinds, TemplateHaskell #-} module Tuple where import Language.Haskell.TH type IOable a = (Show a, Read a) foo :: IOable a => a foo = undefined test :: Q Exp test = do Just fooName <- lookupValueName "foo" info <- reify fooName runIO $ print info [| \_ -> 0 |] -- -- Main.hs {-# LANGUAGE TemplateHaskell #-} module Main where import Tuple func :: a -> Int func = $(test) main :: IO () main = print "hello" -- 2014/1/2 Carter Schonwald <[email protected]> > Did you build ghc with both static and dynamic libs? Starting in 7.7/HEAD, > ghci uses Dylib versions of libraries, and thus TH does too. What OS and > architecture is this, and what commit is your ghc build from? > > Last but most importantly, if you don't share the code, we can't really > help isolate the problem. > > > On Thursday, January 2, 2014, Yorick Laupa wrote: > >> Hi, >> >> Oddly I can't compile code using TH with GHC HEAD. Here's what I get: >> >> cannot find normal object file './Tuple.dyn_o' >> while linking an interpreted expression >> >> I'm currently working on a issue so I compile the code with ghc-stage2 >> for convenience. >> >> I found an old ticket related to my problem ( >> https://ghc.haskell.org/trac/ghc/ticket/8443) but adding >> -XTemplateHaskell didn't work out. >> >> The code compiles with ghc 7.6.3. >> >> Here's my setup: Archlinux (3.12.6-1) >> >> Any suggestions ? >> >> --Yorick >> >>
_______________________________________________ ghc-devs mailing list [email protected] http://www.haskell.org/mailman/listinfo/ghc-devs
