[Haskell-cafe] zlib, missing zlib.h

[Don Stewart]

You need to install the C zlib library.

Cabal is currently unable to warn about missing C library dependencies,
but they manifest as undeclared identifiers in .hsc files when that's
the case.

-- Don

tphyahoo:
> Tried to install
> 
> http://hackage.haskell.org/cgi-bin/hackage-scripts/package/zlib
> 
> which is required for
> 
> http://darcs.haskell.org/cabal-branches/cabal-1.4
> 
> which is required for cabal-install.
> 
> Got the following error. apt-get installed zlibc on a stab in the
> dark, but same result. advice?
> 
> thartman at thartman-laptop:~/haskellInstalls/smallInstalls/cabal-install/zlib-0.4.0.4>runghc
> Setup.hs configure
> Configuring zlib-0.4.0.4...
> 
> thartman at thartman-laptop:~/haskellInstalls/smallInstalls/cabal-install/zlib-0.4.0.4>runghc
> Setup.hs build &>out
> 
> thartman at thartman-laptop:~/haskellInstalls/smallInstalls/cabal-install/zlib-0.4.0.4>head
> out
> Preprocessing library zlib-0.4.0.4...
> 
> Stream.hsc:74:18:  error: zlib.h: No such file or directory
> Stream.hsc: In function 'main':
> 
> Stream.hsc:254:0:
>      error: 'z_stream' undeclared (first use in this function)
> 
> Stream.hsc:254:0:
>      error: (Each undeclared identifier is reported only once
> thartman at thartman-laptop:~/haskellInstalls/smallInstalls/cabal-install/zlib-0.4.0.4>
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