On 03/26/2014 11:43 AM, Martin Liška wrote: > following patch increases parallelism for LTO. I tried to add > -flto=+jobserver, but didn't help. According to <http://gcc.gnu.org/onlinedocs/gcc-4.8.2/gcc/Optimize-Options.html#index-flto-891>, the "+" needs to go at the start of the Make recipe line, not in front of "jobserver". Stephan