[Haskell-cafe] Problems linking hsql-mysql

Maciej Podgurski maciej.podgurski at googlemail.com
Wed Feb 24 10:30:16 EST 2010


no, it's absolutely not urgent. I'm just in early stage with building a 
Happstack webpage and testing via GHCi works fine.

The problem occurs on a Windows XP machine with hsql-1.7.1, 
hsql-mysql-1.7.1, GHC-6.10.4 and MySQL Server 5.1. Last year I posted an 
instruction on how I got hsql-mysql running (see 
http://www.mail-archive.com/haskell-cafe@haskell.org/msg61265.html), the 
changes for the new GHC version where exactly the same. To replicate the 
error, just do an import Database.HSQL.MySQL and build the file via ghc 

As far as I remember this worked with GHC-6.8.3, but I'm not quite sure. 
Let me know if you need additional informationen.

Thanks for help,


Am 24.02.2010 01:07 schrieb Nick Rudnick:
> Hi Maciej,
> I will try to reproduce the error -- could you send me your both 
> *.cabal files (for hsql & hsql-mysql), if you have changed anything, 
> and your system configuration.
> Is this extremely urgent? I ask this, as these days exactly the end 
> phase of the projects of about 100 beginner Haskell students, which I 
> am the one to look after. So I am in a little of slow motion regarding 
> other things... ;-)
> But in case you are in emergency, please let me know... At first 
> sight, I would say it looks like a configuration problem... ;-)
> Cheers,
>    Nick
> Maciej Podgurski wrote:
>> Hi,
>> I have problems linking a simple test program that imports 
>> Database.HSQL.MySQL via ghc --make Test.hs. The error only occurs 
>> when importing this module of hsql-mysql-1.7.1. I pasted the building 
>> output here: http://hpaste.org/fastcgi/hpaste.fcgi/view?id=22911 
>> (actually it was even longer but hpaste only takes 30k).
>> When I do ghc -e main Test.hs or starting it from GHCi, everything 
>> works fine and no errors occur. So I guess all needed .lib files are 
>> there but GHC can't find them when linking (adding the flag -L"path 
>> to mysql/lib/opt" doesn't help). Anyone an idea?
>> Best wishes,
>> Maciej
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