In brief:
Define __HASKELL__=98 and __HASKELL98__ as preprocessor macros for all
Haskell 98 compilers.
I would like to hear from from maintainers of ghc, hbc and nhc if this can
be accepted as a "de facto" standard. Please make the (small) change to
the compiler or reply with a good reason not to.
A few weeks ago I asked for opinions on preprocessor symbols for compilers
of Haskell 98. I have summarized the discussion at
http://www.cs.chalmers.se/~patrikj/haskell/cpp/
and I include the first sections below.
Patrik Jansson
Preprocessor symbols and Haskell 98
Proposal:
Define __HASKELL__=98 and __HASKELL98__ as preprocessor macros for all
Haskell 98 compilers.
__HASKELL__=98
This is already defined for all three compilers, but nhc gives it a
value to distinguish between Haskell versions. This would be useful
also for ghc and hbc.
__HASKELL98__
As ghc and hbc use it already, nhc is in minority.
Current status of Haskell 98 compilers:
(nhc98, ghc 4.04 and hbc 0.9999.5b (as yet unreleased))
__HASKELL__
Defined by ghc, hbc and nhc. In nhc it has the value 98.
__HASKELL98__
Defined by ghc, hbc
__HASKELL_98__
Defined by hbc, nhc
__HASKELL1__=5
Defined by ghc, hbc. Ugly!
