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-rw-r--r--var/spack/repos/builtin/packages/m4/package.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/var/spack/repos/builtin/packages/m4/package.py b/var/spack/repos/builtin/packages/m4/package.py
index ad180b15a8..71ed3d1da4 100644
--- a/var/spack/repos/builtin/packages/m4/package.py
+++ b/var/spack/repos/builtin/packages/m4/package.py
@@ -51,7 +51,7 @@ class M4(AutotoolsPackage):
# http://lists.gnu.org/archive/html/bug-m4/2016-09/msg00002.html
arch = spec.architecture
- if (arch.platform == 'darwin' and arch.platform_os == 'sierra' and
+ if (arch.platform == 'darwin' and arch.os == 'sierra' and
'%gcc' in spec):
args.append('ac_cv_type_struct_sched_param=yes')