haskell - Exporting CPP Macros -



haskell - Exporting CPP Macros -

i'm hacking around else's code. have several macros defined in .h file (no code, macros), , these macros used in several haskell files. i'm missing step allows compilation. when seek compile haskell file, errors on missing/undefined macros. there ghc alternative utilize macros defined in header file? i'm trying same ghci.

i did effort rename .h file .hs , import in files utilize macros, apparently not allowed export macros (and not exported automatically).

how can utilize these macros when compiling ghc(i)?

add cpp pragma top of haskell file , add together #include foo.h line haskell file. c preprocessor expand macros you.

see [1] options -dsymbol=value define macro files compiled invocation of ghc.

[1] https://www.haskell.org/ghc/docs/latest/html/users_guide/options-phases.html

haskell ghc

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