[GHC] #4900: DEPENDS pragma

[GHC]

#4900: DEPENDS pragma
------------------------------+---------------------------------------------
  Reporter:  cdsmith          |          Owner:                  
      Type:  feature request  |         Status:  new             
  Priority:  high             |      Milestone:  7.4.1           
 Component:  Build System     |        Version:                  
Resolution:                   |       Keywords:                  
  Testcase:  TH_Depends       |      Blockedby:                  
Difficulty:                   |             Os:  Unknown/Multiple
  Blocking:                   |   Architecture:  Unknown/Multiple
   Failure:  None/Unknown     |  
------------------------------+---------------------------------------------

Comment(by marlowsd@…):

 commit 3f34e0913efcc82dd90be56d04c5e57ec60d3677
 {{{
 Author: Simon Marlow <marlowsd at gmail.com>
 Date:   Fri Nov 18 12:46:01 2011 +0000

     Track #included files for recompilation checking (#4900, #3589)

     This was pretty straightforward: collect the filenames in the lexer,
     and add them in to the tcg_dependent_files list that the typechecker
     collects.

     Note that we still don't get #included files in the ghc -M output.
     Since we don't normally lex the whole file in ghc -M, this same
     mechanism can't be used directly.

  compiler/main/GHC.hs              |   11 ++++++---
  compiler/main/HscMain.hs          |   41
 +++++++++++++++++++++++++++++-------
  compiler/main/HscTypes.lhs        |   21 +++++++++++++++++++
  compiler/parser/Lexer.x           |    6 +++++
  compiler/typecheck/TcRnDriver.lhs |   16 ++++++++++---
  compiler/typecheck/TcRnMonad.lhs  |    6 +++++
  compiler/typecheck/TcRnTypes.lhs  |    2 +-
  7 files changed, 86 insertions(+), 17 deletions(-)
 }}}

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4900#comment:35>
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