Getting error while building android.mk via ndk-build - compilation

Question

I am building some native code in my Android project using ndk-build.
This is my android.mk content:
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_MODULE := julius_arm
LOCAL_SRC_FILES := interface.c
LOCAL_C_INCLUDES += $(LOCAL_PATH)/include
LOCAL_STATIC_LIBRARIES := julius sent
LOCAL_CFLAGS := -DANDROID_DEBUG
LOCAL_LDLIBS := -lc -lz -lgcc -llog -L$(LOCAL_PATH)/lib -llibjulius-llibsent
include $(BUILD_SHARED_LIBRARY)
android.mk file is in the same directory as the include folder and lib folder in the jni directory.
The include folder contains julius and sent folders.
The lib folder contains libjulius.a and libsent.a.
When i try to build it using ndk-build. I get the following error:
00af158\Desktop\microsoft\JuliusForAndroid\app\src\main\jni\lib>ndk-build
: WARNING:C:/Users/ve00af158/Desktop/microsoft/JuliusForAndroid/app/src/main/jni/Android.mk:julius_arm: non-system libraries in linker flags: -lgcc -llibjulius -llibsent
: This is likely to result in incorrect builds. Try using LOCAL_STATIC_LIBRARIES
: or LOCAL_SHARED_LIBRARIES instead to list the library dependencies of the
: current module
: WARNING:C:/Users/ve00af158/Desktop/microsoft/JuliusForAndroid/app/src/main/jni/Android.mk:julius_arm: non-system libraries in linker flags: -lgcc -llibjulius -llibsent
: This is likely to result in incorrect builds. Try using LOCAL_STATIC_LIBRARIES
: or LOCAL_SHARED_LIBRARIES instead to list the library dependencies of the
: current module
: WARNING:C:/Users/ve00af158/Desktop/microsoft/JuliusForAndroid/app/src/main/jni/Android.mk:julius_arm: non-system libraries in linker flags: -lgcc -llibjulius -llibsent
: This is likely to result in incorrect builds. Try using LOCAL_STATIC_LIBRARIES
: or LOCAL_SHARED_LIBRARIES instead to list the library dependencies of the
: current module
: WARNING:C:/Users/ve00af158/Desktop/microsoft/JuliusForAndroid/app/src/main/jni/Android.mk:julius_arm: non-system libraries in linker flags: -lgcc -llibjulius -llibsent
: This is likely to result in incorrect builds. Try using LOCAL_STATIC_LIBRARIES
: or LOCAL_SHARED_LIBRARIES instead to list the library dependencies of the
: current module
: WARNING:C:/Users/ve00af158/Desktop/microsoft/JuliusForAndroid/app/src/main/jni/Android.mk:julius_arm: non-system libraries in linker flags: -lgcc -llibjulius -llibsent
: This is likely to result in incorrect builds. Try using LOCAL_STATIC_LIBRARIES
: or LOCAL_SHARED_LIBRARIES instead to list the library dependencies of the
: current module
: WARNING:C:/Users/ve00af158/Desktop/microsoft/JuliusForAndroid/app/src/main/jni/Android.mk:julius_arm: non-system libraries in linker flags: -lgcc -llibjulius -llibsent
: This is likely to result in incorrect builds. Try using LOCAL_STATIC_LIBRARIES
: or LOCAL_SHARED_LIBRARIES instead to list the library dependencies of the
: current module
: WARNING:C:/Users/ve00af158/Desktop/microsoft/JuliusForAndroid/app/src/main/jni/Android.mk:julius_arm: non-system libraries in linker flags: -lgcc -llibjulius -llibsent
: This is likely to result in incorrect builds. Try using LOCAL_STATIC_LIBRARIES
: or LOCAL_SHARED_LIBRARIES instead to list the library dependencies of the
: current module
Compile : julius_arm <= interface.c
SharedLibrary : libjulius_arm.so
ndk-r13b/build//../toolchains/aarch64-linux-android-4.9/prebuilt/windows-x86_64/lib/gcc/aarch64-linux-android/4.9.x/../../../../aarch64-linux-android/bin\ld: cannot find -llibjulius
ndk-r13b/build//../toolchains/aarch64-linux-android-4.9/prebuilt/windows-x86_64/lib/gcc/aarch64-linux-android/4.9.x/../../../../aarch64-linux-android/bin\ld: cannot find -llibsent
: error: linker command failed with exit code 1 (use -v to see invocation)
C:/Users/ve00af158/Desktop/microsoft/JuliusForAndroid/app/src/main/obj/local/arm64-v8a/libjulius_arm.so] Error 1
I am stuck at this point. Please Help.