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-rw-r--r--src/libutil/affinity.cc2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/libutil/affinity.cc b/src/libutil/affinity.cc
index 3a20fd2774fe..7a6310cadb00 100644
--- a/src/libutil/affinity.cc
+++ b/src/libutil/affinity.cc
@@ -9,8 +9,10 @@
 namespace nix {
 
 
+#if HAVE_SCHED_SETAFFINITY
 static bool didSaveAffinity = false;
 static cpu_set_t savedAffinity;
+#endif
 
 
 void setAffinityTo(int cpu)