JNI make文件

1.編譯多個共享庫

LOCAL_PATH := $(call my-dir)
#
# Module 1
#
include $(CLEAR_VARS)
LOCAL_MODULE := module1
LOCAL_SRC_FILES := module1.c
#
# Module 2
#
include $(CLEAR_VARS)
LOCAL_MODULE := module2
LOCAL_SRC_FILES := module2.c
include $(BUILD_SHARED_LIBRARY)

2.編譯靜態庫

編譯靜態庫然後鏈接生成動態庫

LOCAL_PATH := $(call my-dir)
#
# 3rd party AVI library
#
include $(CLEAR_VARS)
LOCAL_MODULE := avilib
LOCAL_SRC_FILES := avilib.c platform_posix.c
include $(BUILD_STATIC_LIBRARY)
#
# Native module
#
include $(CLEAR_VARS)
LOCAL_MODULE := module
LOCAL_SRC_FILES := module.c
LOCAL_STATIC_LIBRARIES := avilib
include $(BUILD_SHARED_LIBRARY)

3.多個模塊使用共享庫

靜態庫會編進每一個共享庫，無形中增加了整個庫文件的大小，所以推薦用第4種方式

include $(CLEAR_VARS)
LOCAL_MODULE := avilib
LOCAL_SRC_FILES := avilib.c platform_posix.c
include $(BUILD_SHARED_LIBRARY)
#
# Native module 1
#
include $(CLEAR_VARS)
LOCAL_MODULE := module1
LOCAL_SRC_FILES := module1.c
LOCAL_SHARED_LIBRARIES := avilib
include $(BUILD_SHARED_LIBRARY)
#
# Native module 2
#
include $(CLEAR_VARS)
LOCAL_MODULE := module2
LOCAL_SRC_FILES := module2.c
LOCAL_SHARED_LIBRARIES := avilib
include $(BUILD_SHARED_LIBRARY)

4.使用已經編譯過的共享庫
libmonogoose.so是已經用ndk編譯生成的共享庫

LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_MODULE := mongoose-prebuild
LOCAL_SRC_FILES := myLibs/libmonogoose.so
include $(PREBUILT_SHARED_LIBRARY) # 這裏是PREBUILT_SHARED_LIBRARY

include $(CLEAR_VARS)
LOCAL_MODULE := hello_world
LOCAL_SRC_FILES := hello_world.c
LOCAL_SHARED_LIBRARIES := mongoose-prebuild #上面的LOCAL_MODULE
include $(BUILD_SHARED_LIBRARY)