[Hackage] #467: Add support for HPC profiling.

[Hackage]

#467: Add support for HPC profiling.
----------------------------+-----------------------------------------------
  Reporter:  duncan         |        Owner:           
      Type:  enhancement    |       Status:  new      
  Priority:  normal         |    Milestone:  Cabal-1.8
 Component:  Cabal library  |      Version:  1.6.0.1  
  Severity:  normal         |     Keywords:           
Difficulty:  normal         |   Ghcversion:           
  Platform:                 |  
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Comment(by tibbe):

 Currently the best way to get test coverage is to:

 {{{
 cabal configure --enable-tests --ghc-option=-fhpc
 cabal build
 cabal test
 hpc markup <test-suite-binary.tix>
 }}}

 This dumps a bunch of HTML files in the root directory of the package.

 I suggest we add a configure flag `--enable-test-coverage` that:

  * adds `ghc-option: -fhpc` to all libraries,
  * runs the `cabal test` binaries in some working directory other than the
 root to not clutter it with .tix files,
  * runs `hpc <test-suite-binary.tix> --destdir=dist/SOMETHING` on all .tix
 files, and
  * prints the location of the HTML index files to stdout.

 We might want to opt-out the test suite's `main-is` file from the report.
 Perhaps using a flag.

-- 
Ticket URL: <http://hackage.haskell.org/trac/hackage/ticket/467#comment:3>
Hackage <http://haskell.org/cabal/>
Hackage: Cabal and related projects