Compile Static Library only using NDK

In order to build Static library only follow the below steps

If you have multiple libs to build then make Android.mk file for each library  and call those .mk files in the root Android.mk file. On how to write Android.mk file refer Android NDK docs folder

1.    xxxxx/jni/lib1/Android.mk

LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)

LOCAL_MODULE    :=lib1

LOCAL_SRC_FILES :=aaa.c \
bb.c \
include $(BUILD_STATIC_LIBRARY)

2. xxxxx/jni/lib2/Android.mk

LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)

LOCAL_MODULE    :=lib2

LOCAL_SRC_FILES :=asdf.c \
qwert.c \

include $(BUILD_STATIC_LIBRARY)

3. /jni/Android.mk

MY_JNI_FOLDER := $(call my-dir)
include $(MY_JNI_FOLDER)/lib1/Android.mk
include $(MY_JNI_FOLDER)/lib2/Android.mk

Now create another file Application.mk

APP_MODULES        := lib1 lib2 // Note that each module  specified here will perform a force build, which yields lib1.a and lib2.a
APP_OPTIM        := release
APP_ABI          := armeabi armeabi-v7a

Now, type build using ndk-build script

xxxxx@NHPC /cygdrive/c/android-ndk-r4b/samples/hello-jni/jni
$ ../../ndk-build