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Today's Topics:
1. Re: the "download" package fail to install (Henk-Jan van Tuyl)
----------------------------------------------------------------------
Message: 1
Date: Fri, 15 Jun 2012 23:30:32 +0200
From: "Henk-Jan van Tuyl" <[email protected]>
Subject: Re: [Haskell-beginners] the "download" package fail to
install
To: [email protected], "Song Zhang" <[email protected]>
Message-ID: <[email protected]>
Content-Type: text/plain; charset=iso-8859-15; format=flowed;
delsp=yes
On Fri, 15 Jun 2012 07:53:32 +0200, Song Zhang <[email protected]> wrote:
> Hi
> There is a package for High-level file download based on URLs called
> "download", but failed to build on windows, If you don't know it, you can
> refer to hackage first. I compiled in C, but did not get useful massage,
> anyone can help me a little to fix that.
> cabal install download
> get a bad header file
If you give the following command, you have the source code on disk
cabal unpack download
Try to install, with debug messages:
cd download-0.3.2
cabal install -v3
Near the end, you will see:
cbits/download.h:49:15: error: 'MAXHOSTNAMELEN' undeclared here (not in a
function)
cbits/download.h uses the macro MAXHOSTNAMELEN; on a Windows system, this
is defined in a different header file,
A simple solution is inserting the following lines after line 44 in
download.h:
#ifdef _WIN32
#define MAXHOSTNAMELEN 256
#endif
This results in a complaint about macro FILE not being defined; this can
be solved by adding line:
#include <stddef.h>
The error message now is:
In file included from C:\DOCUME~1\Henk-Jan\LOCALS~1\Temp\1848.c:1:0:
cbits/download.h:98:1: error: expected '=', ',', ';', 'asm' or
'__attribute__'
before 'FILE'
I hope someone else will solve this last(?) problem.
Regards,
Henk-Jan van Tuyl
--
http://Van.Tuyl.eu/
http://members.chello.nl/hjgtuyl/tourdemonad.html
Haskell programming
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