Can not separate source and build directories

[lutter]

I am trying to use rake-compiler as part of a larger project that uses CMake. I would like to put everything that gets generated during the build into a separate directory. That largely works, with two exceptions:

1. I can't set ext.config_script to an absolute path. rake-compiler will still prepend ext/<lib> to that and then complain that it can't find the script

2. There doesn't seem to be a way to tell rake-compiler to put packages somewhere else, i.e. the pkg.package_dir of the generated Gem::PackageTask can't be influenced in any way

My apologies if there is a way to do this, but after trying a bunch of things and reading some of the code, I couldn't resolve these issues.

[kou]

Can you create a small project that reproduces the problem?