[project @ 2005-05-16 13:47:57 by simonmar]
Implement -x <suffix> flag to override the suffix of a filename for the purposes of determinig how it should be compiled. The usage is similar to gcc, except that we just use a suffix rather than a name for the language. eg. ghc -c -x hs hello.blah will pretend hello.blah is a .hs file. Another possible use is -x hspp, which skips preprocessing. This works for one-shot compilation, --make, GHCi, and ghc -e. The original idea was to make it possible to use runghc on a file that doesn't end in .hs, so changes to runghc will follow. Also, I made it possible to specify .c files and other kinds of files on the --make command line; these will be compiled to objects as normal and linked into the final executable. GHC API change: I had to extend the Target type to include an optional start phase, and also GHC.guessTarget now takes a (Maybe Phase) argument. I thought this would be half an hour, in fact it took half a day, and I still haven't documented it. Sigh.
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