#2897: HsFFI.h is not in the default include path for hsc2hs
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Reporter: cjs | Owner:
Type: bug | Status: new
Priority: highest | Milestone: 7.4.1
Component: hsc2hs | Version: 6.10.1
Resolution: | Keywords:
Testcase: | Blockedby:
Difficulty: Unknown | Os: Unknown/Multiple
Blocking: | Architecture: Unknown/Multiple
Failure: None/Unknown |
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Comment(by simonmar):
There's another solution:
* Have `hsc2hs` emit two C files, one that looks like the current one,
and another one that defines simple wrappers for the C library functions
that we call (`fprintf` etc.)
* `template-hsc.h` declares prototypes for the wrappers, and defines its
own macros in terms of them. It does not need to `#include` any system
headers.
* `hsc2hs` will have to compile both C files and link them together into
the final program.
So then because we're not including any system headers in `template-
hsc.h`, the problem should go away.
Even if we adopt Duncan's proposal, I think we should do this too, because
including system headers in the same C file that generates the `.hs`
output has the potential to create other subtle problems too. By avoiding
doing this we give the user full control over what headers are included
and in what order.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2897#comment:17>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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