Alternately, the "standard" way to use profiling with template haskell is a 2-stage process: - First, compile all of the modules normally, *without* -prof - Then, compile all of the module again, with the following flags: -prof -osuf p_o
These steps, and the reason this workaround is necessary, are documented in the GHC user manual (section 7.6.4): http://www.haskell.org/ghc/docs/latest/html/users_guide/template-haskell.html#id3154592 Best, -Judah On 4/27/07, Robin Green <[EMAIL PROTECTED]> wrote:
As a workaround, you could try to use zeroTH to preprocess the template haskell. (I have a patched version of zeroTH that works better but it currently requires a patched version of GHC - ask me if you want it.) ZeroTH darcs repo: http://darcs.haskell.org/~lemmih/zerothHead/ Original announcement by Lemmih: http://permalink.gmane.org/gmane.comp.lang.haskell.template/219 -- Robin On Fri, 27 Apr 2007 20:26:21 +0700 "ET" <[EMAIL PROTECTED]> wrote: > Hi, folks > > Trying to profile the modules, those contain a template-haskell > splices, I have ran into problem - GHC6.4 (win2K) returns an error > message and then stops. Without the "-prof" option all works fine. > > Is there a way to bypass this inconsistency? > > > Example below illustrates the problem: > > ============================ > > {-# OPTIONS_GHC -fth #-} > module Main where > > import MainTH > > main :: IO () > main = putStrLn . show . fact $ 100 > > fact :: Integer -> Integer > fact n = $(thFact "n") > > ============================ > > module MainTH where > > import Language.Haskell.TH > > thFact :: String -> ExpQ > thFact s = appE (dyn "product") > (arithSeqE (fromToR (litE . integerL $ 1) (dyn s))) > > preview :: IO () > preview = runQ (thFact "x") >>= putStrLn . pprint > > ============================ > > >ghc --make -prof Main.hs > Chasing modules from: Main.hs > Compiling MainTH ( ./MainTH.hs, ./MainTH.o ) > Compiling Main ( Main.hs, Main.o ) > Loading package base-1.0 ... linking ... done. > Loading package haskell98-1.0 ... linking ... done. > Loading package template-haskell-1.0 ... linking ... done. > ghc: > ./MainTH.o: unknown symbol `_era' > > With function "MainTH.preview" excluded from export list, final > phrase were ghc: > ./MainTH.o: unknown symbol `_entering_PAP' > > > > > > _______________________________________________ > Haskell-Cafe mailing list > Haskell-Cafe@haskell.org > http://www.haskell.org/mailman/listinfo/haskell-cafe > _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
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