From 8ad05d6a74ba8c1e718b51b7b3b1cd43d484d7e6 Mon Sep 17 00:00:00 2001
From: "Adam J. Stewart" <ajstewart426@gmail.com>
Date: Fri, 18 Jun 2021 08:49:18 -0500
Subject: FBGEMM: GCC 5+ and AVX2 required (#24356)
---
var/spack/repos/builtin/packages/fbgemm/package.py | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/var/spack/repos/builtin/packages/fbgemm/package.py b/var/spack/repos/builtin/packages/fbgemm/package.py
index 16ac75611f..fde068f7be 100644
--- a/var/spack/repos/builtin/packages/fbgemm/package.py
+++ b/var/spack/repos/builtin/packages/fbgemm/package.py
@@ -35,4 +35,12 @@ class Fbgemm(CMakePackage):
depends_on('python', type='build')
depends_on('llvm-openmp', when='%apple-clang')
+ conflicts('%gcc@:4', msg='FBGEMM requires GCC 5+')
+
generator = 'Ninja'
+
+ @run_before('cmake')
+ def check_requirements(self):
+ if 'avx2' not in self.spec.target:
+ raise RuntimeError(
+ 'FBGEMM requires a CPU with support for AVX2 instruction set or higher')
--
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