Date: Fri, 1 Feb 2013 09:07:37 -0800 From: John-Mark Gurney <jmg@funkthat.com> To: current@FreeBSD.org Subject: -current broken on pre-PPro machines (w/ work around) Message-ID: <20130201170737.GP1410@funkthat.com>
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Just a warning to others so they don't hit the same issue I did, and spend time trying to figure it out. clang (in -current) does not compile code properly for pre-PPro machines... Compiled output includes the cmov instructions... This affects both loader, and kernel, so if you update loader, you'll see a few spins, and the machine will probably reset... if you use an older loader, your kernel will fault a/ an illegal instruction... If you want to run -current on one of these machines, make sure you set WITHOUT_CLANG_IS_CC= for *BOTH* buildworld and installworld so that you use gcc instead of clang... A bug has been filed: http://llvm.org/bugs/show_bug.cgi?id=15115 -- John-Mark Gurney Voice: +1 415 225 5579 "All that I will do, has been done, All that I have, has not."
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