[New-bugs-announce] [issue36125] Cannot cross-compile to more featureful but same tune

[Ross Burton]

New submission from Ross Burton <ross.burton at intel.com>:

My build machine is a Haswell Intel x86-64. I'm cross-compiling to x86-64, with -mtune=Skylake -avx2.  During make install PYTHON_FOR_BUILD loads modules from the *build* Lib/ which contain instructions my Haswell can't execute:

| _PYTHON_PROJECT_BASE=/data/poky-tmp/master/work/corei7-64-poky-linux/python3/3.7.2-r0/build _PYTHON_HOST_PLATFORM=linux-x86_64 PYTHONPATH=../Python-3.7.2/Lib _PYTHON_SYSCONFIGDATA_NAME=_sysconfigdata_m_linux_x86_64-linux-gnu python3.7 -v -S -m sysconfig --generate-posix-vars ;\
Illegal instruction

----------
components: Build
messages: 336688
nosy: rossburton
priority: normal
severity: normal
status: open
title: Cannot cross-compile to more featureful but same tune
versions: Python 3.7

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue36125>
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