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  • Alp Mestanogullari's avatar
    Refine the GHCI macro into HAVE[_{INTERNAL, EXTERNAL}]_INTERPRETER · 39f50bff
    Alp Mestanogullari authored and Marge Bot's avatar Marge Bot committed
    As discussed in #16331, the GHCI macro, defined through 'ghci' flags
    in ghc.cabal.in, ghc-bin.cabal.in and ghci.cabal.in, is supposed to indicate
    whether GHC is built with support for an internal interpreter, that runs in
    the same process. It is however overloaded in a few places to mean
    "there is an interpreter available", regardless of whether it's an internal
    or external interpreter.
    
    For the sake of clarity and with the hope of more easily being able to
    build stage 1 GHCs with external interpreter support, this patch splits
    the previous GHCI macro into 3 different ones:
    
    - HAVE_INTERNAL_INTERPRETER: GHC is built with an internal interpreter
    - HAVE_EXTERNAL_INTERPRETER: GHC is built with support for external interpreters
    - HAVE_INTERPRETER: HAVE_INTERNAL_INTERPRETER || HAVE_EXTERNAL_INTERPRETER
    39f50bff