On Thu, 11 Jun 2015, Andy Polyakov wrote:
It's can as well be wrong. I mean it might have to be adjusted as
$1>=2.20 instead of 2.19. While AVX support was added in binutils 2.19,
they might have omitted specifically vpclmulqdq. Can you confirm if it
works if you replace 2.19 with 2.20?
Indeed, I confirm that the following patch fixes the issue:
--- crypto/modes/asm/ghash-x86_64.pl.bak 2015-06-11
17:04:21.000000000 +0200
+++ crypto/modes/asm/ghash-x86_64.pl 2015-06-11 17:04:28.000000000
+0200
@@ -92,7 +92,7 @@
if (`$ENV{CC} -Wa,-v -c -o /dev/null -x assembler /dev/null 2>&1`
=~ /GNU assembler version ([2-9]\.[0-9]+)/) {
- $avx = ($1>=2.19) + ($1>=2.22);
+ $avx = ($1>=2.20) + ($1>=2.22);
}
if (!$avx && $win64 && ($flavour =~ /nasm/ || $ENV{ASM} =~ /nasm/) &&
Dimitris
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