[Haskell-cafe] how to turn on RTS options?

Johan Larson johan.g.larson at gmail.com
Sun Jul 6 16:57:01 UTC 2014

"cabal clean" did the trick.


On Sun, Jul 6, 2014 at 12:54 PM, Carter Schonwald <
carter.schonwald at gmail.com> wrote:

> Try doing a cabal clean? Also are you setting that for an executable or a
> library? Only makes sense on an executable
> On Sunday, July 6, 2014, Johan Larson <johan.g.larson at gmail.com> wrote:
>> I need to change some runtime options.
>> I updated the options line in my cabal file:
>>   ghc-options:         -Wall -fno-warn-orphans -O2 -rtsopts
>> But when I rebuild and run, it's as though runtime options are still
>> disabled.
>> C:\johan\Haskell\projects\bio-acai>cabal build
>> .\bio-acai.cabal has been changed. Re-configuring with most recently used
>> options. If this fails, please run configure manually.
>> Resolving dependencies...
>> Configuring bio-acai-
>> Building bio-acai-
>> Preprocessing executable 'acai' for bio-acai-
>> Preprocessing test suite 'tests' for bio-acai-
>> C:\johan\Haskell\projects\bio-acai>dist\build\acai\acai.exe +RTS -H128m
>> -K64m
>> *acai.exe: Most RTS options are disabled. Link with -rtsopts to enable
>> them.*
>> My best guess is that the "ghc-options" line is the wrong place to try to
>> turn on RTS option handling. But what's the right one?
>> --
>> Johan Larson -- Toronto, Canada

Johan Larson -- Toronto, Canada
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