09/11/2021 17:12, Lance Richardson: > Do the machines used for the CentOS 8 CI builds support AVX512?
Probably not. OK thank you. > The failing build is on an Ice Lake server with: > meson -Dmachine=native build > ninja -C build > > On Tue, Nov 9, 2021 at 11:08 AM Thomas Monjalon <tho...@monjalon.net> wrote: > > 09/11/2021 16:57, David Marchand: > > > On Tue, Nov 9, 2021 at 4:53 PM Lance Richardson > > > <lance.richard...@broadcom.com> wrote: > > > > > > > > 21.11-rc2 builds are failing on CentOS 8.4, apparently because > > > > the intrinsic _mm512_set_epi8() is not defined in the GCC > > > > headers (see example below). > > > > > > Thanks for reporting Lance. > > > It rings a bell, think it was mentionned in the past. > > > > CI compilation was passing: > > http://mails.dpdk.org/archives/test-report/2021-November/238534.html > > I would like to better understand. > > > > [...] > > > > Here is a GCC patch to add this intrinsic: > > > > https://www.mail-archive.com/gcc-patches@gcc.gnu.org/msg188664.html > > > > > > > > BTW, GCC 10.2.1 (via "scl enable gcc-toolset-10") is able to build > > > > 21.11-rc2 successfully on CentOS 8.4. > > > > > > > > Lance > > > > > > > > # gcc --version > > > > gcc (GCC) 8.4.1 20200928 (Red Hat 8.4.1-1) > > [...] > > > > ../lib/hash/rte_thash_x86_gfni.h:59:24: error: implicit declaration of > > > > function ‘_mm512_set_epi8’; did you mean ‘_mm512_set1_epi8’? > > > > What is different in your setup compared to the CI?
