While talking about test suites, there is a simple change that would make several Makefile.ams much shorter. Often tests are simple one-compilation-unit programs, in which case the convention that foo_SOURCES defaults to foo.c saves lot of dummy typing (especially if there are many foos). But this does not apply to C++ :(
I wish I could define AM_DEFAULT_SOURCE_EXT = .cc or whatever, so that I wouldn't have to define all the foo_SOURCES.
