Date: Fri, 08 Jan 2016 23:15:32 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 205787] Can't compile freebsd srcs (/usr/src) with clang/llvm 3.8 and option -march=haswell Message-ID: <bug-205787-8-bTIIhTozt3@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-205787-8@https.bugs.freebsd.org/bugzilla/> References: <bug-205787-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D205787 --- Comment #4 from Dimitry Andric <dim@FreeBSD.org> --- Without any further information, I'm guessing that your bsd.compiler.mk does not detect the compiler version properly, and that incorrect flags are being used to compile boot2. (The whole sys/boot area is very sensitive to the e= xact optimization flags, it will almost always grow too large if they aren't correct.) Can you provide a log of the commands being used to compile everything under /usr/src/sys/boot? For example, by running "make clean" in there, and then running make as usual, but redirected to a log file. I'm also interested in the COMPILER_TYPE and COMPILER_VERSION detected by y= our version of the build system. E.g. in /usr/src, run: make -V COMPILER_TYPE -V COMPILER_VERSION and paste the output here. Having said all that, I think you will run into multiple problems that will= be pretty tricky to solve, if you continue this way. 10.2-RELEASE is complete= ly frozen, and misses a lot of important fixes and updates which are in 10-STA= BLE, making the task even more difficult. Therefore, I think it is wisest to abandon this attempt. You will most lik= ely not gain any significant performance advantage by compiling with -march=3Dhaswell, as opposed to e.g. -march=3Dcorei7. --=20 You are receiving this mail because: You are the assignee for the bug.=
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