libosmocore[master]: configure.ac: fix build on systems without SIMD support

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Vadim Yanitskiy gerrit-no-reply at lists.osmocom.org
Tue May 9 20:39:23 UTC 2017


Patch Set 1:

(1 comment)

https://gerrit.osmocom.org/#/c/2548/1/m4/ax_check_simd.m4
File m4/ax_check_simd.m4:

Line 44:   AM_CONDITIONAL(HAVE_AVX2, false)
> QEMU: Great!
Odd: Why do you think so?

Original macro used to check whether *both* CPU and compiler
do support some set of SIMD features. But, since we decided
to use runtime SIMD detection, we don't need to check, whether
CPU of build machine supports required SIMD anymore. So, this
is why cpuid related functionality was cut out. And right now
this is a small part of original macro, which only checks if
compiler supports defined SIMD flags.

Honestly, it isn't my own idea - I used dexter's recent changes
of OsmoTRX as an example and just replicated his a bit mistaken
way of AM_CONDITIONAL variable definition. I already notified him
about that.


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Gerrit-MessageType: comment
Gerrit-Change-Id: If0c3128f9768f95c1f5f955db242e71c81384c6c
Gerrit-PatchSet: 1
Gerrit-Project: libosmocore
Gerrit-Branch: master
Gerrit-Owner: Vadim Yanitskiy <axilirator at gmail.com>
Gerrit-Reviewer: Harald Welte <laforge at gnumonks.org>
Gerrit-Reviewer: Holger Freyther <holger at freyther.de>
Gerrit-Reviewer: Jenkins Builder
Gerrit-Reviewer: Vadim Yanitskiy <axilirator at gmail.com>
Gerrit-HasComments: Yes



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