fix python whl of armlinux (#3546)

lite/api/python/setup.py.in

@@ -33,11 +33,17 @@ else:
     PADDLELITE_VERSION = PADDLELITE_TAG
 
 # core lib of paddlelite is stored as lite.so
-LITE_PATH = '${PADDLE_BINARY_DIR}/inference_lite_lib/python/install/lite'
+files = os.listdir('${PADDLE_BINARY_DIR}')
+INFERENCE_LITE_LIB_PATH = ''
+for file in files:
+    if file.find('inference_lite_lib') == 0:
+        INFERENCE_LITE_LIB_PATH = '${PADDLE_BINARY_DIR}/' + file
+        break
+LITE_PATH = INFERENCE_LITE_LIB_PATH + '/python/install/lite'
 PACKAGE_DATA = {'paddlelite': ['lite.so' if os.name!='nt' else 'lite.pyd']}
 # put all thirdparty libraries in paddlelite.libs
 PACKAGE_DATA['paddlelite.libs'] = []
-LIB_PATH = '${PADDLE_BINARY_DIR}/inference_lite_lib/python/install/libs'
+LIB_PATH = INFERENCE_LITE_LIB_PATH + '/python/install/libs/'
 if '${WITH_MKL}' == 'ON':
     shutil.copy('${MKLML_SHARED_IOMP_LIB}', LIB_PATH)
     shutil.copy('${MKLML_SHARED_LIB}', LIB_PATH)
@@ -49,8 +55,7 @@ if '${WITH_MKL}' == 'ON':
         PACKAGE_DATA['paddlelite.libs'] += ['msvcr120.dll']
 # link lite.so to paddlelite.libs
 if os.name != 'nt':
-    COMMAND = "patchelf --set-rpath '$ORIGIN/../libs/' ${PADDLE_BINARY_DIR}\
-/inference_lite_lib/python/install/lite/lite.so"
+    COMMAND = "patchelf --set-rpath '$ORIGIN/../libs/' " + LITE_PATH + "/lite.so"
     if os.system(COMMAND) != 0:
         raise Exception("patch third_party libs failed, command: %s" % COMMAND)