https://bugs.dpdk.org/show_bug.cgi?id=344
Bug ID: 344
Summary: Broken CPU feature discovery for armv8
Product: DPDK
Version: unspecified
Hardware: ARM
OS: All
Status: UNCONFIRMED
Severity: normal
Priority: Normal
Component: meson
Assignee: dev@dpdk.org
Reporter: i.maxim...@samsung.com
Target Milestone: ---
To check available cpuflags both build systems (make and meson) uses compiler
invocations with provided machine flags which is '-march=armv8-a+crc'.
It makes no much sense getting defines from the cc with non-native arch as
it will have nothing common with real cpu features available.
This leads to inability using dpdk on armv8 platform without crc support due
to illegal instructions.
'-march=native' is only available since GCC 8. Also, DPDK uses
'-march=armv8-a+crc'
as a default armv8 machine regardless of fact that crc extension is optional.
Reported-at:
https://mail.openvswitch.org/pipermail/ovs-dev/2019-September/362301.html
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