"Keep going" option for "Build All"

Make has a "keep going" option, "-k", which, when enabled, means that if it a file fails to compile, it still keeps trying to compile other files. This can sometimes be useful:

• To get an idea how much of a project is currently broken
• For a large project, you can start a build, do something else while you wait, then come back and fix a few minor errors, instead of coming back to find it failed on the first file and gave up.

For similar reasons, it would be nice if running "Build All" in Qt Creator didn't immediately give up if one of the projects fails to build, but instead carried on trying to build all the other projects in the session.

The only problem I can see is that it appears that Qt Creator wipes all warnings when it starts building the next project, so presumably it would need some modification to allow it to keep warnings and errors from different projects and display them in a way that made it clear which project the warnings/errors belonged to.