http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59335
--- Comment #22 from PaX Team <pageexec at gmail dot com> --- some notes: 1. there're *.def files as well needed for certain headers 2. there're target specific headers and .def files installed/needed from gcc/config/*/ as well 3. it's hard to tell a priori what one will need ;), but i'd say tree*.h, gimple*.h, *rtl*.h, targ*.h, expr.h, recog,h, regs.h, reload.h, ira.h, dwarf2asm.h, hosthooks.h, coverage.h, value-prof.h, alloc-pool.h, lto-streamer.h, diagnostic-color.h at least would be useful (and all their dependencies of course).