A while back I implemented support for handling filenames with space in them in the macros SetupCopyFiles and install-file. To verify this functionality I added tests to our test-make suite. These tests currently fail on Solaris. We currently don't use this functionality on Solaris, but keeping the tests passing is still preferable.

The problem is when using the $(@D) and $(@<) variants to extract the directory or filename of the target or source file in a recipe, we first need to EncodeSpace, as otherwise the ? seems to be evaluating before the implicit $(dir) or $(notdir) is called.