[Haskell-cafe] Re: Curl error message

On Fri, 24 Jul 2009 21:16:15 +0200, Henk-Jan van Tuyl wrote:

On Tue, 21 Jul 2009 09:39:59 +0200, silent_stream wrote:

...

When I compile curl-1.3.5 on Windows xp. I run the prompt "runghc Setup.hs configure " I got the following error Setup.hs: Missing dependency on a foreign library: * Missing C library: curl This problem can usually be solved by installing the system package that provides this library (you may need the "-dev" version). If the library is already installed but in a non-standard location then you can use the flags --extra-include-dirs= and --extra-lib-dirs= to specify where it is. I don't know how to fix this problem. Who knows? Please come to help me .

This message means that the curl package depends on the curl package written in C; to get the C curl package, go to http://curl.haxx.se/download.html and download the proper package (for example http://curl.haxx.se/download/curl-7.19.5-win32-ssl-sspi.zip ) and unpack it into a directory with no space in the path name, e.g.: C:\temp\curl-7.19.5

If you do not have MingW/MSYS installed, do it now[1], you will need it for other packages as well.

Open a DOS shell and go to the curl C package directory, give command: make ; it will take several minutes to build. Copy the contents of directory C:\temp\curl-7.19.5\include\curl to a directory where you collect .h files for linking, e.g.: C:\usr\local\include\curl Copy the contents of directory C:\temp\curl-7.19.5\lib\.libs to a directory where you collect library files for linking, e.g.: C:\usr\local\lib\curl

To let the compiler find the necessary files, set environment variables: set C_INCLUDE_PATH=C:\usr\local\include set LIBRARY_PATH=C:\usr\local\lib;C:\usr\local\lib\curl

Now you will be able to compile the Haskell curl package.

[1] http://www.haskell.org/haskellwiki/Windows#Tools_for_compilation

The Haskell curl package must also be in a directory without spaces in the name; the script used for installation cannot handle spaces in path. After moving the package to C:\temp, the package installs. -- Met vriendelijke groet, Henk-Jan van Tuyl -- http://functor.bamikanarie.com http://Van.Tuyl.eu/ --