diff --git a/config/functions b/config/functions
index d7fab03bf9..4aed9c4895 100644
--- a/config/functions
+++ b/config/functions
@@ -323,6 +323,7 @@ setup_toolchain() {
         mkdir -p $TOOLCHAIN/etc
         echo "SET(CMAKE_SYSTEM_NAME Linux)" >> $CMAKE_CONF
         echo "SET(CMAKE_SYSTEM_VERSION 1)"  >> $CMAKE_CONF
+        echo "SET(CMAKE_SYSTEM_PROCESSOR ${MACHINE_HARDWARE_PLATFORM})" >> $CMAKE_CONF
         echo "SET(CMAKE_C_COMPILER   $CC)"  >> $CMAKE_CONF
         echo "SET(CMAKE_CXX_COMPILER $CXX)" >> $CMAKE_CONF
         echo "SET(CMAKE_CPP_COMPILER $CXX)" >> $CMAKE_CONF
diff --git a/config/optimize b/config/optimize
index 3144c05d1f..08d38b3b97 100644
--- a/config/optimize
+++ b/config/optimize
@@ -60,8 +60,8 @@ if [ -z "$HOST_LIBDIR" ]; then
   HOST_LIBDIR="$TOOLCHAIN/lib"
 
   # ubuntu/debian specific "multiarch support"
-  MACHINE_HARDWARE_NAME="$(uname -m)"
-  MACHINE_HARDWARE_PLATFORM="$(uname -i)"
+  export MACHINE_HARDWARE_NAME="$(uname -m)"
+  export MACHINE_HARDWARE_PLATFORM="$(uname -i)"
   FAMILY_TRIPLET=${HOST_NAME/${MACHINE_HARDWARE_NAME}/${MACHINE_HARDWARE_PLATFORM}}
   if [ -d /lib/$FAMILY_TRIPLET ]; then
     HOST_LIBDIR="$HOST_LIBDIR /lib/$FAMILY_TRIPLET"