diff --git a/poky/meta/site/powerpc64-linux-glibc b/poky/meta/site/powerpc64-linux-glibc
new file mode 100644
index 0000000..dc5c285
--- /dev/null
+++ b/poky/meta/site/powerpc64-linux-glibc
@@ -0,0 +1,2 @@
+ac_cv_sizeof_long_double=${ac_cv_sizeof_long_double=16}
+