The Glorious Glasgow Haskell Compilation System User's Guide ...

The Glorious Glasgow Haskell
Compilation System User’s Guide,
Version 6.10.4 7 / 224
– -fallow-incoherent-instances (use the IncoherentInstances language extension instead)
– -optdep-s (use -dep-suffix instead)
– -optdep-f (use -dep-makefile instead)
– -optdep-w (has no effect)
– -optdep--include-prelude (use -include-pkg-deps instead)
– -optdep--include-pkg-deps (use -include-pkg-deps instead)
– -optdep--exclude-module (use -exclude-module instead)
– -optdep-x (use -exclude-module instead)
• The following flags have been removed:
– -no-link-chk (has been a no-op since at least 6.0)
– -fruntime-types (has not been used for years)
– -fhardwire-lib-paths (use -dynload sysdep)
• The -unreg flag, which was used to build unregisterised code with a registerised compiler, has been removed. Now you need
to build an unregisterised compiler if you want to build unregisterised code.
1.8.3 GHC API changes
• There is now a Ghc Monad used to carry around GHC’s Session data. This Monad also provides exception handling functions.
• It is now possible to get the raw characters corresponding to each token the lexer outputs, and thus to reconstruct the original
file.
• GHCi implicitly brings all exposed modules into scope with qualified module names. There is a new flag -fimplicit-import-qualified
that controls this behaviour, so other GHC API clients can specify whether or not they want it.
• There is now haddock documentation for much of the GHC API.
1.8.4 GHCi changes
• You can now force GHCi to interpret a module, rather than loading its compiled code, by prepending a * character to its name,
e.g.
Prelude> :load *A
Compiling A ( A.hs, interpreted )
*A>
• By default, GHCi will not print bind results, e.g.
Prelude> c
does not print ’c’. Use -fprint-bind-result if you want the old behaviour.
• GHCi now uses editline, rather than readline, for input. This shouldn’t affect its behaviour.
• The GHCi prompt history is now saved in ~/.ghc/ghci_history.
• GHCi now uses libffi to make FFI calls, which means that the FFI now works in GHCi on a much wider range of platforms (all
those platforms that libffi supports).