[Hackage] #262: Check for required C libraries during configure

[Hackage]

#262: Check for required C libraries during configure
----------------------------+-----------------------------------------------
  Reporter:  guest          |        Owner:                 
      Type:  enhancement    |       Status:  reopened       
  Priority:  high           |    Milestone:  Cabal-1.6      
 Component:  Cabal library  |      Version:  1.2.3.0        
  Severity:  normal         |   Resolution:                 
  Keywords:                 |   Difficulty:  easy (<4 hours)
Ghcversion:  6.8.2          |     Platform:                 
----------------------------+-----------------------------------------------
Changes (by duncan):

  * status:  closed => reopened
  * difficulty:  very easy (<1 hour) => easy (<4 hours)
  * resolution:  fixed =>

Comment:

 I've built nearly every package on hackage to look for regressions. Two
 things need fixing:

 We do not look for `.h` files in the root directory of the package. This
 breaks `HsPerl5-0.0.6`, `cedict-0.2.5` and `halfs-0.2`.

 We do not add the include dirs for dependent packages. This breaks
 `hscurses-1.3.0.2`, `plugins-1.4.0` and `unix-compat-0.1.2.1`. Of these
 `plugins-1.4.0` is not a good test case because it is broken for other
 reasons (the .h file it #includes cannot be included on its own).

 The solution to the first issue should be easy. Just add `.` into the list
 of include dirs. The second requires copying the code from the pre-
 processor module where we do the same thing for hsc2hs. Perhaps it's
 possible to share the code.

-- 
Ticket URL: <http://hackage.haskell.org/trac/hackage/ticket/262#comment:15>
Hackage <http://haskell.org/cabal/>
Hackage: Cabal and related projects