diff --git a/build/android/aarch64/make-Android.bash b/build/android/aarch64/make-Android.bash
index 7951ea50..eb2bf0b2 100755
--- a/build/android/aarch64/make-Android.bash
+++ b/build/android/aarch64/make-Android.bash
@@ -16,6 +16,8 @@ for ARG in "$@"; do
   fi
 done
 
+MPP_PWD=`pwd`
+
 source ../env_setup.sh
 
 ${CMAKE_PROGRAM} -DCMAKE_TOOLCHAIN_FILE=${TOOLCHAIN_FILE}                   \
diff --git a/build/android/arm/make-Android.bash b/build/android/arm/make-Android.bash
index 7bc548b4..343ad06c 100755
--- a/build/android/arm/make-Android.bash
+++ b/build/android/arm/make-Android.bash
@@ -15,6 +15,8 @@ for ARG in "$@"; do
   fi
 done
 
+MPP_PWD=`pwd`
+
 source ../env_setup.sh
 
 ${CMAKE_PROGRAM} -DCMAKE_TOOLCHAIN_FILE=${TOOLCHAIN_FILE}                   \
diff --git a/build/android/env_setup.sh b/build/android/env_setup.sh
index b14a2a13..a30eb6b9 100755
--- a/build/android/env_setup.sh
+++ b/build/android/env_setup.sh
@@ -1,5 +1,26 @@
 #!/bin/bash
 
+# Run this from within a bash shell
+MAKE_PROGRAM=`which make`
+
+# delete list
+FILES_TO_DELETE=(
+    "CMakeCache.txt"
+    "Makefile"
+    "cmake_install.cmake"
+    "compile_commands.json"
+    "rockchip_mpp.pc"
+    "rockchip_vpu.pc"
+)
+
+DIRS_TO_DELETE=(
+    "CMakeFiles"
+    "mpp"
+    "osal"
+    "test"
+    "utils"
+)
+
 #################################################
 # Arguments
 #################################################
@@ -10,6 +31,8 @@ while [ $# -gt 0 ]; do
             echo "  use --ndk to set ANDROID_NDK"
             echo "  use --cmake to specify which cmake to use"
             echo "  use --debug to enable debug build"
+            echo "  use --rebuild to rebuild after clean"
+            echo "  use --clean to clean all build file"
             exit 1
             ;;
         --debug)
@@ -28,15 +51,32 @@ while [ $# -gt 0 ]; do
             CMAKE_PROGRAM=$2
             shift
             ;;
+        --rebuild)
+            ${MAKE_PROGRAM} clean
+            if [ -f "CMakeCache.txt" ]; then
+                rm CMakeCache.txt
+            fi
+            shift
+            ;;
+        --clean)
+            for FILE_TO_DELETE in "${FILES_TO_DELETE[@]}"; do
+                if [ -f ${FILE_TO_DELETE} ]; then
+                    rm ${FILE_TO_DELETE}
+                fi
+            done
+            for DIR_TO_DELETE in "${DIRS_TO_DELETE[@]}"; do
+                if [ -d ${DIR_TO_DELETE} ]; then
+                    rm -rf ${DIR_TO_DELETE}
+                fi
+            done
+            exit 1
+            ;;
     esac
     shift
 done
 
 CMAKE_PARALLEL_ENABLE=0
 
-# Run this from within a bash shell
-MAKE_PROGRAM=`which make`
-
 #################################################
 # Detect cmake version
 #################################################
diff --git a/build/linux/aarch64/make-Makefiles.bash b/build/linux/aarch64/make-Makefiles.bash
index 2571b093..a648bc4a 100755
--- a/build/linux/aarch64/make-Makefiles.bash
+++ b/build/linux/aarch64/make-Makefiles.bash
@@ -14,6 +14,8 @@ check_system_arm_linux_gcc(){
     check_cmd aarch64-linux-gnu-gcc -v
 }
 
+source ../opt_proc.sh
+
 check_system_arm_linux_gcc
 if [ $? -eq 127 ];then
     MPP_TOOLCHAIN=/usr/bin
diff --git a/build/linux/arm/make-Makefiles.bash b/build/linux/arm/make-Makefiles.bash
index ce5ffaaf..b5777033 100755
--- a/build/linux/arm/make-Makefiles.bash
+++ b/build/linux/arm/make-Makefiles.bash
@@ -14,6 +14,8 @@ check_system_arm_linux_gcc(){
     check_cmd arm-linux-gcc -v
 }
 
+source ../opt_proc.sh
+
 check_system_arm_linux_gcc
 if [ $? -eq 127 ];then
     MPP_TOOLCHAIN=${MPP_TOP}/../prebuilts/toolschain/usr/bin
diff --git a/build/linux/opt_proc.sh b/build/linux/opt_proc.sh
new file mode 100755
index 00000000..29d7bd4c
--- /dev/null
+++ b/build/linux/opt_proc.sh
@@ -0,0 +1,52 @@
+# Run this from within a bash shell
+MAKE_PROGRAM=`which make`
+
+# delete list
+FILES_TO_DELETE=(
+    "CMakeCache.txt"
+    "Makefile"
+    "cmake_install.cmake"
+    "compile_commands.json"
+    "rockchip_mpp.pc"
+    "rockchip_vpu.pc"
+)
+
+DIRS_TO_DELETE=(
+    "CMakeFiles"
+    "mpp"
+    "osal"
+    "test"
+    "utils"
+)
+
+while [ $# -gt 0 ]; do
+    case $1 in
+        --help | -h)
+            echo "Execute make-Makefiles.sh in *arm/* or *aarch64/* with some args."
+            echo "  use --rebuild to rebuild after clean"
+            echo "  use --clean to clean all build file"
+            exit 1
+            ;;
+        --rebuild)
+            ${MAKE_PROGRAM} clean
+            if [ -f "CMakeCache.txt" ]; then
+                rm CMakeCache.txt
+            fi
+            shift
+            ;;
+        --clean)
+            for FILE_TO_DELETE in "${FILES_TO_DELETE[@]}"; do
+                if [ -f ${FILE_TO_DELETE} ]; then
+                    rm ${FILE_TO_DELETE}
+                fi
+            done
+            for DIR_TO_DELETE in "${DIRS_TO_DELETE[@]}"; do
+                if [ -d ${DIR_TO_DELETE} ]; then
+                    rm -rf ${DIR_TO_DELETE}
+                fi
+            done
+            exit 1
+            ;;
+    esac
+    shift
+done
\ No newline at end of file