Profiling builds with Stack

Question

How do I tell stack to build my executable and all its dependencies with -prof?

Simply adding it to ghc-options in the

Answer 1

Assuming a project called project-name, this is how I get a time and heap profile (with colors):

1. Add dependencies to the build-depends section of project-name.cabal
2. Get dependent packages: stack build
3. From inside project-name/app compile the program with profiling enabled: stack ghc -- -prof -fprof-auto -rtsopts -O2 Main.hs
4. Then create the heap and time profile ./Main +RTS -hc -p. This will produce Main.hp and Main.prof
5. Turn the heap profile into a PostScript file and then into a PDF chart with colors: stack exec -- hp2ps -c Main.hp && ps2pdf Main.ps

That's the heap profile from the PDF: