diff --git a/build/core/maple_variables.mk b/build/core/maple_variables.mk
index c64a65e1ffe2f3289de80d7475551c8c31724929..016ade458f4bd96ab9cba78edfd8f0cddce79da7 100644
--- a/build/core/maple_variables.mk
+++ b/build/core/maple_variables.mk
@@ -19,6 +19,16 @@ LIB_CORE_JAR := $(LIB_CORE_PATH)/java-core.jar
 LIB_CORE_MPLT := $(LIB_CORE_PATH)/java-core.mplt
 
 CLANG_PATH := $(MAPLE_ROOT)/tools/clang+llvm-8.0.0-x86_64-linux-gnu-ubuntu-16.04
+ifdef OLD_OS
+  ifeq ($(OLD_OS), 0)
+    CLANG_PATH := /usr
+  endif
+endif
+
+ifndef OPS_ANDROID
+  OPS_ANDROID := 0
+endif
+
 ANDROID_GCC_PATH := $(MAPLE_ROOT)/tools/gcc
 ANDROID_CLANG_PATH := $(MAPLE_ROOT)/tools/clang-r353983c
 GCC_LINARO_PATH := $(MAPLE_ROOT)/tools/gcc-linaro-7.5.0