[Haskell-cafe] Error when building executable with profiling enabled

2013-04-05 Thread Nikolaos Bezirgiannis 

Hello,

i have an executable where i want to run profiling on.

I do:

ghc --make -prof -auto-all -fth Custom.hs

but it does not built and the output is:

bench\HLogo\Custom\Custom.hs:1:1:
Dynamic linking required, but this is a non-standard build (eg. prof).
You need to build the program twice: once the normal way, and then
in the desired way using -osuf to set the object file suffix.

I tried googling on the error with no success. What can I do to
compile this file for profiling?

Cheers,
Nikos

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Re: [Haskell-cafe] Error when building executable with profiling enabled

2013-04-05 Thread Krzysztof Skrzętnicki 
You are using TemplateHaskell (-fth switch) which can be tricky. Please see
this documentation on profiling with TH:
http://www.haskell.org/ghc/docs/7.6.1/html/users_guide/template-haskell.html#id624714.
Other than following the documentation I would recommend using Cabal
which handles the necessary flags and double-compilation process itself.

Best regards,
Krzysztof Skrzętnicki


On Fri, Apr 5, 2013 at 4:41 PM, Nikolaos Bezirgiannis wrote:

>
> Hello,
>
> i have an executable where i want to run profiling on.
>
> I do:
>
> ghc --make -prof -auto-all -fth Custom.hs
>
> but it does not built and the output is:
>
> bench\HLogo\Custom\Custom.hs:1:1:
> Dynamic linking required, but this is a non-standard build (eg. prof).
> You need to build the program twice: once the normal way, and then
> in the desired way using -osuf to set the object file suffix.
>
> I tried googling on the error with no success. What can I do to
> compile this file for profiling?
>
> Cheers,
> Nikos
>
> ___
> Haskell-Cafe mailing list
> Haskell-Cafe@haskell.org
> http://www.haskell.org/mailman/listinfo/haskell-cafe
>
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Re: [Haskell-cafe] Error when building executable with profiling enabled

2013-04-06 Thread Nikolaos Bezirgiannis 

I switched to profiling through Cabal as you suggested, but now I have
the error:

bench\HLogo\Custom\Custom.hs:1:1:
cannot find normal object file 
`dist\build\custom\custom-tmp\Framework\Keyword.o'
while linking an interpreted expression

So, I removed managing the executables directly from Cabal
(--enable-executable-profiling) , and only enabled library profiling.  

Then I manually compiled each executable twice as:

ghc --make Custom.hs
ghc --make -prof -osuf p_o  Custom.hs

Profiling now works. Thank you.

Regards,
Nikos

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Re: [Haskell-cafe] Error when building executable with profiling enabled

2013-04-07 Thread Johannes Waldmann 
Krzysztof Skrzętnicki  gmail.com> writes:

> see this documentation on profiling with TH:
http://www.haskell.org/ghc/docs/7.6.1/html/users_guide/template-haskell.html#id624714


"GHC cannot load the profiled object code 
and use it when executing the splices."

That means I do not get profiling information 
for the code that gets spliced in? 
Or for the code that is producing the splice?

What's the work-around for the first case?
(short of -ddump-splices, which seems somewhat problematic,
according to   http://hackage.haskell.org/trac/ghc/ticket/5016 )

- J.W.



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