Re: [Rd] In creating a Windows binary package (zip), how do I make the installation configurable

From: Duncan Murdoch <>
Date: Thu, 12 Jul 2007 13:39:41 -0400

On 7/12/2007 1:00 PM, wrote:
> I would like to create a binary package for Windows which when
> installed will give the user an option of whether to install
> one version or another.
> Here is the problem, I have a package 'FAME' that can run
> in two different modes on Windows. An old mode that uses
> R to connect to a remote linux machine and a new way that
> uses a locally installed database.
> I would allow this decision to be made at run time, but
> the DLL in the later case depends upon the database's DLL
> being on the Windows machine. A runtime solution would
> require at least one extra level of dynamic loading.
> So I would like something like this to happen:
> the zip file contains fame-local.dll and fame-remote.dll
> when the user selects 'install packages from a zip file'
> the user should be given the option of which DLL
> should be renamed to 'fame.dll'.
> Is this possible??
> If so, how would I do it?

I don't think it's possible: installing from a .zip file basically just copies the files to the system, it doesn't execute the code.

It would be possible to do this if installing from a source package (just build one DLL), or you could install both and delay the decision until you attach the package: there are hooks to execute code when a package is loaded.

> If not, then are there an recommendations for a solution?
> An alternative I can try is to have 2 separate packages,
> 'fame' and 'fame-remote'.

I'd do it through a load hook. The rgl package does this when running on a Mac, because it's not until load time that it knows if the user is using X11 or Aqua. See the .onLoad function in zzz.R for details.

Duncan Murdoch mailing list Received on Thu 12 Jul 2007 - 17:40:51 GMT

Archive maintained by Robert King, hosted by the discipline of statistics at the University of Newcastle, Australia.
Archive generated by hypermail 2.2.0, at Thu 12 Jul 2007 - 18:36:23 GMT.

Mailing list information is available at Please read the posting guide before posting to the list.