Dne 4.3.2016 v 06:40 Nicolas Pitre napsal(a): > +cmd_and_fixdep = > \ > + $(echo-cmd) $(cmd_$(1)); \ > + $(ksym_dep_filter) | \ > + scripts/basic/fixdep -e $(depfile) $@ '$(make-cmd)' \ > + > $(dot-target).tmp; \ > + rm -f $(depfile); \ > + mv -f $(dot-target).tmp $(dot-target).cmd;
While trying this, I got a SIGBUS from fixdep once. My theory is that the depfile is mmap()ed by fixdep and modified by the preprocesor run at the same time. I could not reproduce this so far (still trying). But if it's really this race, the fix would be to disable dependency generation in the preprocessor by passing -Wp,MD,/dev/null or somesuch. But we never had this problem with genksyms, which is weird. It could as well be that my build machine's memory is faulty :(. Michal
