[GHC] #618: Dependency caching in ghc --make

[GHC]

#618: Dependency caching in ghc --make
-------------------------------+--------------------------------------------
  Reporter:  simonmar          |          Owner:         
      Type:  task              |         Status:  new    
  Priority:  normal            |      Milestone:         
 Component:  Compiler          |        Version:  None   
  Severity:  normal            |     Resolution:  None   
  Keywords:                    |             Os:  Unknown
Difficulty:  Moderate (1 day)  |   Architecture:  Unknown
-------------------------------+--------------------------------------------
Changes (by simonmar):

  * architecture:  => Unknown
  * difficulty:  => Moderate (1 day)
  * os:  => Unknown

Old description:

> {{{
> ghc --make should cache dependencies between runs, somehow.
> }}}

New description:

 {{{
 ghc --make should cache dependencies between runs, somehow.
 }}}

-- 
Ticket URL: <http://cvs.haskell.org/trac/ghc/ticket/618>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler