http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49579
--- Comment #2 from Olaf van der Spek <olafvdspek at gmail dot com> 2011-06-29 14:46:00 UTC --- I kinda agree, but: Automake (and CMake) devs say they don't know how to properly support PCHs. So maybe GCC devs could help them and ensure end users can use this feature of GCC.