On 12/13/06, Bayley, Alistair
From: Paul Moore [mailto:p.f.moore@gmail.com] This appears to be caused by ghci/runhaskell wanting to link the entire library at once, rather than just the modules you're using. I don't know if this is a bug or a feaure with ghci; anybody else want to comment?
This problem affects both ghci and runhaskell. It does not affect ghc, though. I'm not sure what the best solution is; we might have to do what Krasimir did with HSQL and make each database-specific module a separate package.
For now, if you want to use Takusen, you are stuck with ghc (the compiler). This invocation:
ghc --make db.hs -o db should make you a working db.exe.
Thanks for the explanation - it's no problem using ghc, I was only using runhaskell for (a tiny bit of) convenience. Having said that, I now get
ghc --make db.hs -o db [1 of 1] Compiling Main ( db.hs, db.o ) Linking db.exe ... D:\Apps\GHC\gcc-lib\ld.exe: cannot find -lsqlite3
collect2: ld returned 1 exit status
This may be because I have a sqlite3.dll in my PATH, but no development libs. Would that make configure think that sqlite is available, but because the build needs the link library, fail at that stage? If so, I may well be heading for a problem with Oracle, as I have the client only installed, so the OCI DLLs are present, but not the headers and lib files. (I've hit this one before, and can get round it, though). I had a look on the sqlite website, but can't find a "development libraries" download. I'm reluctant to get bogged down in building sqlite, so I'm leaving it there for now. To work around this, I removed sqlite3.exe from my PATH, and set up an oracle directory in my PATH which did include OCI. Then runhaskell Setup.hs configure reported no sqlite, no postgres, and Oracle from where I wanted. I reinstalled Takusen with these options. However, now when I run ghc --make, I get a string of link errors from Oracle stuff (OCIconstants.o). This is serious progress - I'm linking the right stuff this time. I've seen similar issues before, where I tried to use gcc to link to the Oracle-supplied OCI libraries (or at least I think that was it), as Oracle supply MSVC compatible libraries instead. Could this be relevant here? I know ghc uses the gcc linker, so it seems like a possibility.
I have added a README.txt to the darcs repo, which hopefully provides a lot of this missing information. I haven't added uninstall instructions though :-)
That looks excellent - it would have given me exactly what I needed. Paul.