Hi Étienne,
Am Thu, Aug 04, 2022 at 11:17:20PM +0200 schrieb Étienne Mollier:
> Andreas Tille, on 2022-08-04:
> > I tried to upgrade plink2 to latest upstream but as per Salsa CI[1]
> > the build fails on amd64 with
> […]
> > 1534 | # error "32-byte-float-vector builds require FMA3 as well."
>
> plink2 is one of the packages implementing simde. It looks like
> for certain architecture flags, the source code also expects to
> be able to make use of fma instructions, which are CPU specific.
>
> Not all x86_64 processors support fma, so -mfma would be another
> build option to add to the simde build for the vector intrinsics
> which require it.
I admit the -mfma flag was new in the upstream code when I refreshed
the patch debian/patches/baseline. If I try
$ git diff
diff --git a/debian/patches/baseline b/debian/patches/baseline
index 35392f8..fda4df6 100644
--- a/debian/patches/baseline
+++ b/debian/patches/baseline
@@ -8,7 +8,7 @@ Forwarded: not-needed
# BASEFLAGS=-g -DZSTD_MULTITHREAD -DSTATIC_ZSTD
-BASEFLAGS=-g -mavx2 -mbmi -mbmi2 -mfma -mlzcnt -DZSTD_MULTITHREAD
-+BASEFLAGS=-g -DZSTD_MULTITHREAD
++BASEFLAGS=-g -mfma -DZSTD_MULTITHREAD
# BASEFLAGS=-g -msse4.2 -DZSTD_MULTITHREAD
include Makefile.src
the build failure remains on my hardware.
> The processor flag would also need to be
> checked in the dispatch code when selecting the proper binary
> for the end-user CPU.
>
> In hope this helps,
Well, it gives some explanation - but no real solution how to build
the package.
Kind regards
Andreas.
--
http://fam-tille.de
