From 232448d60c438302edadae64d88086c1d11e213d Mon Sep 17 00:00:00 2001
From: Matthieu Schaller <matthieu.schaller@durham.ac.uk>
Date: Thu, 17 Oct 2019 20:14:24 +0100
Subject: [PATCH] Use the correct variable to detect whether we are compiling
on an AVX-512 platform with ICC.
---
configure.ac | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/configure.ac b/configure.ac
index a2539ff04c..cabb62559b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -452,10 +452,11 @@ if test "$enable_opt" = "yes" ; then
ac_test_CFLAGS="yes"
detected_ax_gcc_arch=`echo $ax_gcc_arch | awk '{print $1;}'`
-
+ detected_ax_icc_flag=`echo $icc_flags | awk '{print $1;}'`
+
# Choose the best flags for the gravity sub-library on this compiler and architecture
if test "$ax_cv_c_compiler_vendor" = "intel"; then
- if test "$detected_ax_gcc_arch" = "skylake-avx512"; then
+ if test "$detected_ax_icc_flag" = "-xCORE-AVX512"; then
GRAVITY_CFLAGS="-qopt-zmm-usage=high"
else
AC_MSG_WARN([No additional flags needed for gravity on this platform])
--
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