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-rw-r--r--var/spack/repos/builtin/packages/phist/package.py4
1 files changed, 4 insertions, 0 deletions
diff --git a/var/spack/repos/builtin/packages/phist/package.py b/var/spack/repos/builtin/packages/phist/package.py
index 0c67b0165d..49055440c9 100644
--- a/var/spack/repos/builtin/packages/phist/package.py
+++ b/var/spack/repos/builtin/packages/phist/package.py
@@ -111,6 +111,10 @@ class Phist(CMakePackage):
# required a separate package
conflicts('+fortran', when='@:1.6.99')
+ # older gcc's may produce incorrect SIMD code and fail
+ # to compile some OpenMP statements
+ conflicts('%gcc@:4.9.1')
+
def cmake_args(self):
spec = self.spec