save previous values of LOCAL_* variables and restore them at the end(cherry…

save previous values of LOCAL_* variables and restore them at the end(cherry picked from commit 286fe261)

cmake/templates/OpenCV.mk.in

@@ -2,6 +2,13 @@
 # you might need to define NDK_USE_CYGPATH=1 before calling the ndk-build
 
 USER_LOCAL_PATH:=$(LOCAL_PATH)
+
+USER_LOCAL_C_INCLUDES:=$(LOCAL_C_INCLUDES)
+USER_LOCAL_CFLAGS:=$(LOCAL_CFLAGS)
+USER_LOCAL_STATIC_LIBRARIES:=$(LOCAL_STATIC_LIBRARIES)
+USER_LOCAL_SHARED_LIBRARIES:=$(LOCAL_SHARED_LIBRARIES)
+USER_LOCAL_LDLIBS:=$(LOCAL_LDLIBS)
+
 LOCAL_PATH:=$(subst ?,,$(firstword ?$(subst \, ,$(subst /, ,$(call my-dir)))))
 
 OPENCV_TARGET_ARCH_ABI:=$(TARGET_ARCH_ABI)
@@ -136,6 +143,13 @@ ifeq ($(OPENCV_LOCAL_CFLAGS),)
 endif
 
 include $(CLEAR_VARS)
+
+LOCAL_C_INCLUDES:=$(USER_LOCAL_C_INCLUDES)
+LOCAL_CFLAGS:=$(USER_LOCAL_CFLAGS)
+LOCAL_STATIC_LIBRARIES:=$(USER_LOCAL_STATIC_LIBRARIES)
+LOCAL_SHARED_LIBRARIES:=$(USER_LOCAL_SHARED_LIBRARIES)
+LOCAL_LDLIBS:=$(USER_LOCAL_LDLIBS)
+
 LOCAL_C_INCLUDES += $(OPENCV_LOCAL_C_INCLUDES)
 LOCAL_CFLAGS     += $(OPENCV_LOCAL_CFLAGS)