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C source files are not recompiled when cc-options change #4937

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tmcdonell opened this issue Dec 6, 2017 · 1 comment
Open

C source files are not recompiled when cc-options change #4937

tmcdonell opened this issue Dec 6, 2017 · 1 comment
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recompilation type: bug

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@tmcdonell
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My project has some C files, whose behaviour depends on whether we are compiling the project in debug mode or not. This is accomplished via a cc-options: -DACCELERATE_DEBUG in the .cabal file (see here). However, switching between regular and debug builds does not recompile the C sources (though it does seem to recompile relevant .hs files).

Related: #4306
@tmcdonell tmcdonell mentioned this issue Dec 6, 2017
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tmcdonell added a commit to tmcdonell/accelerate that referenced this issue Dec 8, 2017
@tmcdonell
hack to improve switching between debug/release builds
83a91e5 
C source files are not being recompiled when cc-options change, but we can work around that with a super ugly hack \:

haskell/cabal#4937
@ezyang
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ezyang commented Dec 30, 2017

Yes, the recomp avoidance logic for C files is just... bad. Improvements would be much appreciated.

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@ezyang @hvr @tmcdonell