On Wed, May 27, 2020 at 10:13:12PM +0100, Ken Moffat wrote: > On Wed, May 27, 2020 at 12:43:26PM +0800, Xi Ruoyao wrote: > > > > When the -O0 override in glibc errored, I changed that to -O1 (still > with -march=native). Tests on bash still showed the SIGFPE falure, > but I suspect I need to boot the system to properly test it. > Unfortunately it locked up overnight (fairly common on that box) so > I have not yet got to that stage. > > Just to be clear, at the moment I'm only trying to detune glibc. >
Result! In chroot bash still had the SIGFPE failures, and check had the two check_check and check_check_exports failures which prompted all of this. Booted. System is trunk, built from an April build. FLAGS of -O3 and -march=native, with hardening where appropriate (not glibc!), but for glibc I reduced the FLAGS to -O1 -march=native. Built check and ran the tests, all passed. This is on my ryzen 1300X and it's clear that having a "weird or defective" glibc underneath chroot makes running these tests there not useful I'm not at all convinced that I want to continue with -O1 in glibc. I'll throw this one away and start another build using glibc's default flags (-O2 -g without -march=native). To be continued, I hope ;-) Meanwhile, thanks to everyone for the help and suggestions. ĸen -- Do you not know that, what you belittle by the name tree is but the mere four-dimensional analogue of a whole multidimensional universe which - no, I can see you do not. -- Druellae (a Dryad) -- http://lists.linuxfromscratch.org/listinfo/lfs-support FAQ: http://www.linuxfromscratch.org/blfs/faq.html Unsubscribe: See the above information page Do not top post on this list. A: Because it messes up the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail? http://en.wikipedia.org/wiki/Posting_style
