I just upgraded from Ubuntu 13.04 to Ubuntu 13.10, and Firefox wouldn’t build with either clang or GCC. clang was initially failing during configure, complaining about not being able to find joystick.h, though the underlying failure was an inability to find stddef.h.  This Ubuntu bug describes a workaround, which is to do the following. cd … Continue reading Warning for Firefox devs planning to upgrade to Ubuntu 13.10