Hello,
I'm trying to buildworld/buildkernel of stable/11 r330373 for an Intel
Atom CPU (CPUTYPE=slm) on a (slightly faster, CPUTYPE=core-avx2) build
machine. That works fine, but make installkernel on the Atom box fails
with a SIGILL (signal 4) in the "install" command (sorry, no log or
screenshot).
As far as I can tell, this is because installkernel uses the install
from ...obj.../tmp/legacy/usr/bin, which is built for the host.
Disassembling the binary shows that it uses AVX opcodes. The "main" part
of the build output correctly respects the CPUTYPE override.
I suppose I'm doing something wrong here, but what? It must be possible
to build for a different CPU of the same family, right? I even tried
running a cross build (TARGET=amd64 TARGET_ARCH=amd64), but since the
build host _is_ amd64, the Makefiles laughed at me and only did the
normal build.
The command that did not work was:
MAKEOBJDIRPREFIX=/usr/obj/slm make CPUTYPE=slm buildworld buildkernel
I have CPUTYPE?=core-avx2 in make.conf, but that should be irrelevant here.
Thanks for any hints.
--
Christian
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