On Thu, Sep 09, 2010 at 11:11:33PM -0500, Tom Hawkins wrote:
to other fields, not just automotive. My question is, is it possible for a user to select which programs to install within a given package? I could see where someone would want to install a data analysis tool, but not want to bother with separately installing Kvaser canlib. I had considered different packages for the individual tools, but that would get messy pretty quick, especially since many tools share a lot of common code.
And one last question: The Kvaser canlib library has a different name depending on if the machine is Linux or Windows. What is the best way to configure the build based on the platform? Current I have the library name hard coded in the extra-libraries field in the cabal file.
You want conditional configurations in the .cabal file. See http://www.haskell.org/cabal/release/cabal-latest/doc/users-guide/authors.ht... For the OS issue you can do something like if os(windows) Build-depends: canlib-windows else Build-depends: canlib or whatever. For user-selectable programs, create some flags and use the flags to specify which executables are buildable. Then the user can just pass a flag to cabal install and get the executables they want. -Brent