From f2963e41ba04300c77912a76edce4224f80cc382 Mon Sep 17 00:00:00 2001
From: eugeneswalker <38933153+eugeneswalker@users.noreply.github.com>
Date: Fri, 27 Oct 2023 11:08:33 -0700
Subject: mgard@2020-10-01 %oneapi@2023: turn of c++11-narrowing via cxxflags
 (#40743)

---
 var/spack/repos/builtin/packages/mgard/package.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/var/spack/repos/builtin/packages/mgard/package.py b/var/spack/repos/builtin/packages/mgard/package.py
index b58f4c0bba..411dd0c9b9 100644
--- a/var/spack/repos/builtin/packages/mgard/package.py
+++ b/var/spack/repos/builtin/packages/mgard/package.py
@@ -59,6 +59,12 @@ class Mgard(CMakePackage, CudaPackage):
     )
     conflicts("%gcc@:7", when="@2022-11-18:", msg="requires std::optional and other c++17 things")
 
+    def flag_handler(self, name, flags):
+        if name == "cxxflags":
+            if self.spec.satisfies("@2020-10-01 %oneapi@2023:"):
+                flags.append("-Wno-error=c++11-narrowing")
+        return (flags, None, None)
+
     def cmake_args(self):
         spec = self.spec
         args = ["-DBUILD_TESTING=OFF"]
-- 
cgit v1.2.3-70-g09d2