http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54780
--- Comment #3 from jpakkane at gmail dot com 2012-10-03 07:53:59 UTC --- Thanks for the explanation and workaround. I guess this is not a big issue if you are using Autotools, where the established practice is to compile inside the source directory. It might cause a lot of head scratching for users of other build systems or those few autotools users that use a dedicated build directory.