#527: CPP not called before ffihugs ----------------------------+----------------------------------------------- Reporter: guest | Owner: Type: defect | Status: new Priority: normal | Milestone: Component: Cabal library | Version: 1.6.0.1 Severity: normal | Keywords: Difficulty: unknown | Ghcversion: Platform: | ----------------------------+----------------------------------------------- When building for Hugs, if CPP is being used in conjunction with FFI, then cpp/cpphs is not called before ffihugs is called. Thus, users must pass an -F flag to ffihugs in order to declare a code filter (and must pass all cpp-options to -F manually). For example: {{{ --ffihugs-option=-F'cpp -P -traditional -D__HUGS__ -D__BLAH__' }}} This requires duplicating the build specifications, which defeats the point of Cabal. Also it leads to tricky issues about ensuring the proper level of quoting/escaping. (e.g. using the plural, --ffihugs-options=..., breaks it. Wrapping the -F'cpp...' in double quotes breaks it.) A simple example of this bug can be seen in Darcs repo http://community.haskell.org/~wren/cabal-ffihugstest -- Ticket URL: http://hackage.haskell.org/trac/hackage/ticket/527 Hackage http://haskell.org/cabal/ Hackage: Cabal and related projects