http://bugzilla.opensuse.org/show_bug.cgi?id=1170376 http://bugzilla.opensuse.org/show_bug.cgi?id=1170376#c4 --- Comment #4 from Guillaume GARDET <guillaume.gardet@arm.com> --- (In reply to Aaron Puchert from comment #2)
(In reply to Guillaume GARDET from comment #0)
2) Add '-moutline-atomics' to the list of ignored flags in LLVM
(In reply to Dirk Mueller from comment #1)
It seems like 2) is the only option.
Wouldn't be the first time we're doing this so it's fine for me. [1]
Another option would be to remove it manually in the affected packages, I think there are few packages that build with Clang. But it's probably not a bad idea to go with 2) either way so that Clang supports our default flags.
So, going with 2) seems to be ok for everyone!
Silly question: why can this behavior not be achieved with -mtune=armv8.1-a?
AFAIK, '-mtune=armv8.1-a' does not exist, and '-march=armv8.1-a' would break all armv8.0 hardware as it will use instructions only available on v8.1, including LSE atomics. '-moutline-atomics' will make use of new LSE instructions only if hardware support it, and will fallback to legacy instructions if hardware does not support the new ones. @Aaron, would you take care of the patches or should I prepare a SR? -- You are receiving this mail because: You are on the CC list for the bug.