[cvs-nhc98] cvs commit: nhc98/src/hmake MkConfig.hs

[Simon Marlow]

On 16 August 2004 17:03, Malcolm Wallace wrote:

> Maybe we should add a new option to the compiler, rather like cpp -dM,
> to report any cpp symbols that are automatically defined.

Not quite as concise as cpp -dM </dev/null, but it does the same thing:

  $ ghc -E -optP-dM -cpp -o /dev/stdout foo.hs

Also you can get the information from ghc -v.

And how about this to get the __GLASGOW_HASKELL__ version:

  $ echo __GLASGOW_HASKELL__ >/tmp/foo.hs; \
    ghc -E -cpp -optP-P /tmp/foo.hs -o /dev/stdout; \
    rm -f /tmp/foo.hs
602

I just need to add a flag like gcc's -x flag and the need to create the
temporary file would go away too.

Cheers,
	Simon