https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69635
--- Comment #3 from h2+bugs at fsfe dot org --- Thank you for the quick replies! > Did you build gcc6 with --enable-checking=release ? I am using the pre-built FreeBSD packages, I have checked, and it seems it is not the case. That likely explains it... I will double-check with the package maintainer. > You can speed up the build time by using -flto=<number of CPU cores>. Ah, that's very interesting! I hadn't seen -flto with a number yet. Is there more documentation on it? Is this the "WHOPR" mode described here: https://gcc.gnu.org/onlinedocs/gccint/LTO-Overview.html ? I had previously thought flto was only useful when linking multiple translation units... Does it have an effect on the produced binary?
