CODEWITHSUNDEEP
haskellhaskell-stack
whitehead1415
whitehead1415

Reputation: 435

How to add memory profiling options to stack test

when running stack test --profile it automatically adds the -p rts option. I am trying to do some memory profiling on my test suite and so would like to add the hc, or hy rts option.

This doesn't seem to work

stack test --profile --ghc-options="+RTS -hc -RTS"

it gives the error

ghc: the flag -hc requires the program to be built with -prof

Upvotes: 1

Views: 230

Answers (1)

dsign
dsign

Reputation: 12700

If I have to guess, you intend the +RTS options to be passed to the final test program, but in your invocation above it might be that those options are being received by the ghc executable itself; like you are telling to ghc "compile this code but please profile your memory while you do that". My suggestion is to build the tests with profiling enabled (for example by running the tests first with stack test --profile, although probably you can also use some form of stack build) and then run the generated test executable (with profiling) passing the RTS options.

Upvotes: 2

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