I have now reverted everything back to the RBuild scripts. Will set up a side-by-side solution with manual CMake builds as soon as possible - unless somebody solves all problems in the meantime :)
Note that we don't just have a testing problem now, but also issues with PCH files (see http://build.reactos.org/builders/Trunk_x86_GCCLin%20Debug/builds/9903/steps...). The old ccache 2.4 has already been replaced by a fresh version 3.1.6 today, with apparently no effect on our problems though.
- Colin