[Haskell-cafe] HDBC-ODBC build/install problem.

Edward Ing edward.ing at gmail.com
Thu Jul 12 17:35:36 EDT 2007

I am trying to make HaskellDB work with HDBC-ODBC.
I did builds of HDBC/HDBC-ODBC. But when I am building
HaskellDB-HDBC-ODBC, I get the following message.

"[1 of 1] Compiling Database.HaskellDB.HDBC.ODBC (
dist\build/Database/HaskellDB/HDBC/ODBC.o )
C:\Program Files\Haskell\HDBC-odbc-\ghc-6.6.1/Database/HDBC/ODBC/Connection.hi
Declaration for connectODBC:
  Failed to load interface for `Database.HDBC.ODBC.ConnectionImpl':
    Use -v to see a list of the files searched for.
Cannot continue after interface file error"

>From this, I know the problem is the linkage between
Database.HDBC.ODBC.Connection and Database.HDBC.ODBC.ConnectionImple.
(Also I looked at the code to see the reference.)

I did a little further investigation. I looked at the package registry
area (C:\Program
Files\Haskell\HDBC-odbc-\ghc-6.6.1\Database\HDBC\ODBC) and
notice that ConnectionImpl.hi is not there.

I went back to the build directory and did find ConnectoinImpl.hi and
It seems like runghc Setup.hs install, did not install ConnectionImpl.hi.

I looked into the file named ".installed-pkg-config" and I saw this:

exposed-modules: Database.HDBC.ODBC
hidden-modules: Database.HDBC.ODBC.Connection
                Database.HDBC.ODBC.Statement Database.HDBC.ODBC.Types
                Database.HDBC.ODBC.Utils Database.HDBC.ODBC.TypeConv
import-dirs: "C:\\Program Files\\Haskell\\HDBC-odbc-\\ghc-6.6.1"
library-dirs: "C:\\Program Files\\Haskell\\HDBC-odbc-\\ghc-6.6.1"
hs-libraries: HSHDBC-odbc-
extra-libraries: odbc32

No mention of ConnectionImple.hi. It looks like the setup up script
did not install ConnectionImpl.hi.

Did ConnectionImpl.o get bound into "libHSHDBC-odbc-" even
though ConnectionImpl.hi did not get successfully installed?

Does anyone know why the install target does not install
ConnectionImpl.hi and how I can get around this problem?

(Where is the odbc32 to be found anyways?)

Here are a few things I did try which did NOT work:

1. Copy ConnectionImpl.hi over manually. HaskellDB-HDBC-ODBC builds,
but at runtime there is a link error.

2. Manually alter ".installed-pkg-config" to add ConnectionImpl.hi as
hidden module.

Please comment on why these would not work ( I will learn from this.)

Help would be appreciated.

Edward Ing

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