[Bug other/55930] libatomic build failure if configured with --disable-dependency-tracking

[compnerd at compnerd dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55930

--- Comment #3 from Saleem Abdulrasool <compnerd at compnerd dot org> ---
Still occurs with 4.9.2 (and the same patch still fixes it).