Windows命令ndk-build编译.so文件

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本文介绍如何使用 Android NDK 进行项目编译，包括配置环境变量、创建 jni 目录、编辑 Application.mk 和 Android.mk 文件，并通过批处理文件进行编译。文章详细展示了如何指定 ABI、平台版本、链接静态库等配置。

1. 下载一个NDK包，然后设置ndk-build所在的目录到环境变量。

2. 在源代码目录新建一个jni目录（试了几次Android.mk如果不在jni目录时需要写完整路径）。

3. Application.mk

#APP_ABI := all
#APP_ABI := arm64-v8a armeabi-v7a armeabi x86 x86_64
APP_ABI := arm64-v8a armeabi-v7a
APP_PLATFORM := android-14
#APP_STL := stlport_shared
APP_STL := stlport_static
APP_MODULES := Common

4. Android.mk

LOCAL_PATH := $(call my-dir)


######################################################### sqlite3 #########################################################


include $(CLEAR_VARS)

LOCAL_MODULE := sqlite3

MY_INCLUDES := -I$(LOCAL_PATH)/../..

LOCAL_SRC_FILES := ../../Framework/Sqlite3/sqlite3.c

LOCAL_CFLAGS := -DPlatform_Linux $(MY_INCLUDES) -Wall -O3

LOCAL_EXPORT_C_INCLUDES :=
LOCAL_EXPORT_CFLAGS :=
LOCAL_EXPORT_LDLIBS := -llog
include $(BUILD_STATIC_LIBRARY)


######################################################### cJSON #########################################################


include $(CLEAR_VARS)

LOCAL_MODULE := cJSON

MY_INCLUDES := -I$(LOCAL_PATH)/../..

LOCAL_SRC_FILES := ../../Framework/Json/cJSON.c

LOCAL_CFLAGS := -DPlatform_Linux $(MY_INCLUDES) -ldl -Wall -O3

LOCAL_EXPORT_C_INCLUDES :=
LOCAL_EXPORT_CFLAGS :=
LOCAL_EXPORT_LDLIBS := -llog
include $(BUILD_STATIC_LIBRARY)


######################################################### Common #########################################################


include $(CLEAR_VARS)

LOCAL_MODULE := Common


MY_INCLUDES := -I$(LOCAL_PATH)/../.. \
			-I$(LOCAL_PATH)/../../Framework/Interface/HAL \
			-I$(LOCAL_PATH)/../Common_IAR_820

MY_SRC_FILES := $(wildcard $(LOCAL_PATH)/../Code/*.cpp) \
					$(wildcard $(LOCAL_PATH)/../../Framework/express/*.cpp) \
					$(wildcard $(LOCAL_PATH)/../../Framework/Util/*.cpp) \
					$(wildcard $(LOCAL_PATH)/../../Framework/fs/*.cpp) \
					$(LOCAL_PATH)/../../HAL/linkLayer/Frame.cpp

LOCAL_SRC_FILES := $(MY_SRC_FILES)

#LOCAL_SRC_FILES := ../Code/BinStream.cpp \
#					../Code/ColumnData.cpp \
#					../Code/Common.cpp \
#					../Code/DataGetter.cpp \
#					../Code/ItemNode.cpp \
#					../Code/MenuTreeNode.cpp \
#					../Code/PublicText.cpp \
#					../Code/Resources.cpp \
#					../Code/Section.cpp \
#					../../Framework/express/FX_Math.cpp \
#					../../Framework/express/FX_Express.cpp \
#					../../Framework/Util/StringUtil.cpp \
#					../../Framework/fs/FxFile.cpp
#					$(LOCAL_PATH)/../../HAL/linkLayer/Frame.cpp
					

LOCAL_CFLAGS := -DPlatform_Linux $(MY_INCLUDES) -ldl -Wall -O3 -std=c++11

# 连接静态库
LOCAL_STATIC_LIBRARIES := sqlite3 cJSON

# 连接动态库
#LOCAL_SHARED_LIBRARIES :=

LOCAL_EXPORT_C_INCLUDES :=
LOCAL_EXPORT_CFLAGS :=
LOCAL_EXPORT_LDLIBS := -llog
#include $(BUILD_SHARED_LIBRARY)
include $(BUILD_STATIC_LIBRARY)

5. 使用批处理（为了方便）

@echo off

chcp 936


rem -jn : 表示使用多少个CPU内核编译
rem V=1: 输出编译参数
rem -B : 强制重新编译
rem NDK_LIBS_OUT=.so输出目录
rem NDK_OUT=.a输出目录
ndk-build -j4 -B V=1 NDK_DEBUG=1 NDK_LIBS_OUT=../../Libs/Debug/Android/libs NDK_OUT=../../Libs/Debug/Android/obj

pause

NDK_LIBS_OUT: 生成的动态库所在目录

NDK_OUT: 生成的.o文件所在的目录