diff --git a/sysdeps/sparc/sparc64/nptl/Makefile b/sysdeps/sparc/sparc64/nptl/Makefile
new file mode 100644
index 0000000000..ddc9038611
--- /dev/null
+++ b/sysdeps/sparc/sparc64/nptl/Makefile
@@ -0,0 +1,3 @@
+ifeq ($(subdir),nptl)
+libpthread-routines += cpu_relax
+endif