diff --git a/config/optimize b/config/optimize
index ca39331a61..5256dc7b58 100644
--- a/config/optimize
+++ b/config/optimize
@@ -65,6 +65,7 @@ if [ -z "$HOST_LIBDIR" ]; then
   HOST_LIBDIR="$TOOLCHAIN/lib"
 
   # ubuntu/debian specific "multiarch support"
+  export MACHINE_HARDWARE_CPU="$(uname -p)"
   export MACHINE_HARDWARE_NAME="$(uname -m)"
   export MACHINE_HARDWARE_PLATFORM="$(uname -i)"
   FAMILY_TRIPLET=$($LOCAL_CC -print-multiarch)