android编译so,android编译so库

android中如何编译出64位so文件?

如果是在Linux下编译Android源码,有可能是两个原因:

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1. lunch命令有32位和64位的区别,注意选能够编译64位so的命令

2. mk文件中有LOCAL_MODULE_PATH的值比如为$(TARGET_OUT_SHARED_LIBRARIES)/hw的改为LOCAL_MODULE_RELATIVE_PATH := hw,后一种可以分别在lib和lib64下分别生成32位和64位的so文件,这个看看编译后的信息就知道了.

android 怎么编译so文件

android NDK编译多个so文件

android编译系统的makefile文件Android.mk写法如下

(1)Android.mk文件首先需要指定LOCAL_PATH变量,用于查找源文件。由于一般情况下

Android.mk和需要编译的源文件在同一目录下,所以定义成如下形式:

LOCAL_PATH:=$(call my-dir)

上面的语句的意思是将LOCAL_PATH变量定义成本文件所在目录路径。

(2)Android.mk中可以定义多个编译模块,每个编译模块都是以include $(CLEAR_VARS)开始

以include $(BUILD_XXX)结束。

include $(CLEAR_VARS)

CLEAR_VARS由编译系统提供,指定让GNU MAKEFILE为你清除除LOCAL_PATH以外的所有LOCAL_XXX变量,

如LOCAL_MODULE,LOCAL_SRC_FILES,LOCAL_SHARED_LIBRARIES,LOCAL_STATIC_LIBRARIES等。

include $(BUILD_STATIC_LIBRARY)表示编译成静态库

include $(BUILD_SHARED_LIBRARY)表示编译成动态库。

include $(BUILD_EXECUTABLE)表示编译成可执行程序

(3)举例如下(frameworks/base/libs/audioflinger/Android.mk):

LOCAL_PATH:= $(call my-dir)

include $(CLEAR_VARS) 模块一

ifeq ($(AUDIO_POLICY_TEST),true)

ENABLE_AUDIO_DUMP := true

endif

LOCAL_SRC_FILES:= \

AudioHardwareGeneric.cpp \

AudioHardwareStub.cpp \

AudioHardwareInterface.cpp

ifeq ($(ENABLE_AUDIO_DUMP),true)

LOCAL_SRC_FILES += AudioDumpInterface.cpp

LOCAL_CFLAGS += -DENABLE_AUDIO_DUMP

endif

LOCAL_SHARED_LIBRARIES := \

libcutils \

libutils \

libbinder \

libmedia \

libhardware_legacy

ifeq ($(strip $(BOARD_USES_GENERIC_AUDIO)),true)

LOCAL_CFLAGS += -DGENERIC_AUDIO

endif

LOCAL_MODULE:= libaudiointerface

ifeq ($(BOARD_HAVE_BLUETOOTH),true)

LOCAL_SRC_FILES += A2dpAudioInterface.cpp

LOCAL_SHARED_LIBRARIES += liba2dp

LOCAL_CFLAGS += -DWITH_BLUETOOTH -DWITH_A2DP

LOCAL_C_INCLUDES += $(call include-path-for, bluez)

endif

include $(BUILD_STATIC_LIBRARY) 模块一编译成静态库

include $(CLEAR_VARS) 模块二

LOCAL_SRC_FILES:= \

AudioPolicyManagerBase.cpp

LOCAL_SHARED_LIBRARIES := \

libcutils \

libutils \

libmedia

ifeq ($(TARGET_SIMULATOR),true)

LOCAL_LDLIBS += -ldl

else

LOCAL_SHARED_LIBRARIES += libdl

endif

LOCAL_MODULE:= libaudiopolicybase

ifeq ($(BOARD_HAVE_BLUETOOTH),true)

LOCAL_CFLAGS += -DWITH_A2DP

endif

ifeq ($(AUDIO_POLICY_TEST),true)

LOCAL_CFLAGS += -DAUDIO_POLICY_TEST

endif

include $(BUILD_STATIC_LIBRARY) 模块二编译成静态库

include $(CLEAR_VARS) 模块三

LOCAL_SRC_FILES:= \

AudioFlinger.cpp \

AudioMixer.cpp.arm \

AudioResampler.cpp.arm \

AudioResamplerSinc.cpp.arm \

AudioResamplerCubic.cpp.arm \

AudioPolicyService.cpp

LOCAL_SHARED_LIBRARIES := \

libcutils \

libutils \

libbinder \

libmedia \

libhardware_legacy

ifeq ($(strip $(BOARD_USES_GENERIC_AUDIO)),true)

LOCAL_STATIC_LIBRARIES += libaudiointerface libaudiopolicybase

LOCAL_CFLAGS += -DGENERIC_AUDIO

else

LOCAL_SHARED_LIBRARIES += libaudio libaudiopolicy

endif

ifeq ($(TARGET_SIMULATOR),true)

LOCAL_LDLIBS += -ldl

else

LOCAL_SHARED_LIBRARIES += libdl

endif

LOCAL_MODULE:= libaudioflinger

ifeq ($(BOARD_HAVE_BLUETOOTH),true)

LOCAL_CFLAGS += -DWITH_BLUETOOTH -DWITH_A2DP

LOCAL_SHARED_LIBRARIES += liba2dp

endif

ifeq ($(AUDIO_POLICY_TEST),true)

LOCAL_CFLAGS += -DAUDIO_POLICY_TEST

endif

ifeq ($(TARGET_SIMULATOR),true)

ifeq ($(HOST_OS),linux)

LOCAL_LDLIBS += -lrt -lpthread

endif

endif

ifeq ($(BOARD_USE_LVMX),true)

LOCAL_CFLAGS += -DLVMX

LOCAL_C_INCLUDES += vendor/nxp

LOCAL_STATIC_LIBRARIES += liblifevibes

LOCAL_SHARED_LIBRARIES += liblvmxservice

# LOCAL_SHARED_LIBRARIES += liblvmxipc

endif

include $(BUILD_SHARED_LIBRARY) 模块三编译成动态库

(4)编译一个应用程序(APK)

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

# Build all java files in the java subdirectory--直译(建立在java子目录中的所有Java文件)

LOCAL_SRC_FILES := $(call all-subdir-java-files)

# Name of the APK to build--直译(创建APK的名称)

LOCAL_PACKAGE_NAME := LocalPackage

# Tell it to build an APK--直译(告诉它来建立一个APK)

include $(BUILD_PACKAGE)

(5)编译一个依赖于静态Java库(static.jar)的应用程序

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

# List of static libraries to include in the package

LOCAL_STATIC_JAVA_LIBRARIES := static-library

# Build all java files in the java subdirectory

LOCAL_SRC_FILES := $(call all-subdir-java-files)

# Name of the APK to build

LOCAL_PACKAGE_NAME := LocalPackage

# Tell it to build an APK

include $(BUILD_PACKAGE)

(6)编译一个需要用平台的key签名的应用程序

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

# Build all java files in the java subdirectory

LOCAL_SRC_FILES := $(call all-subdir-java-files)

# Name of the APK to build

LOCAL_PACKAGE_NAME := LocalPackage

LOCAL_CERTIFICATE := platform

# Tell it to build an APK

include $(BUILD_PACKAGE)

(7)编译一个需要用特定key前面的应用程序

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

# Build all java files in the java subdirectory

LOCAL_SRC_FILES := $(call all-subdir-java-files)

# Name of the APK to build

LOCAL_PACKAGE_NAME := LocalPackage

LOCAL_CERTIFICATE := vendor/example/certs/app

# Tell it to build an APK

include $(BUILD_PACKAGE)

(8)添加一个预编译应用程序

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

# Module name should match apk name to be installed.

LOCAL_MODULE := LocalModuleName

LOCAL_SRC_FILES := $(LOCAL_MODULE).apk

LOCAL_MODULE_CLASS := APPS

LOCAL_MODULE_SUFFIX := $(COMMON_ANDROID_PACKAGE_SUFFIX)

include $(BUILD_PREBUILT)

(9)添加一个静态JAVA库

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

# Build all java files in the java subdirectory

LOCAL_SRC_FILES := $(call all-subdir-java-files)

# Any libraries that this library depends on

LOCAL_JAVA_LIBRARIES := android.test.runner

# The name of the jar file to create

LOCAL_MODULE := sample

# Build a static jar file.

include $(BUILD_STATIC_JAVA_LIBRARY)

(10)Android.mk的编译模块中间可以定义相关的编译内容,也就是指定相关的变量如下:

LOCAL_AAPT_FLAGS

LOCAL_ACP_UNAVAILABLE

LOCAL_ADDITIONAL_JAVA_DIR

LOCAL_AIDL_INCLUDES

LOCAL_ALLOW_UNDEFINED_SYMBOLS

LOCAL_ARM_MODE

LOCAL_ASFLAGS

LOCAL_ASSET_DIR

LOCAL_ASSET_FILES 在Android.mk文件中编译应用程序(BUILD_PACKAGE)时设置此变量,表示资源文件,

通常会定义成LOCAL_ASSET_FILES += $(call find-subdir-assets)

LOCAL_BUILT_MODULE_STEM

LOCAL_C_INCLUDES 额外的C/C++编译头文件路径,用LOCAL_PATH表示本文件所在目录

举例如下:

LOCAL_C_INCLUDES += extlibs/zlib-1.2.3

LOCAL_C_INCLUDES += $(LOCAL_PATH)/src

LOCAL_CC 指定C编译器

LOCAL_CERTIFICATE 签名认证

LOCAL_CFLAGS 为C/C++编译器定义额外的标志(如宏定义),举例:LOCAL_CFLAGS += -DLIBUTILS_NATIVE=1

LOCAL_CLASSPATH

LOCAL_COMPRESS_MODULE_SYMBOLS

LOCAL_COPY_HEADERS install应用程序时需要复制的头文件,必须同时定义LOCAL_COPY_HEADERS_TO

LOCAL_COPY_HEADERS_TO install应用程序时复制头文件的目的路径

LOCAL_CPP_EXTENSION 如果你的C++文件不是以cpp为文件后缀,你可以通过LOCAL_CPP_EXTENSION指定C++文件后缀名

如:LOCAL_CPP_EXTENSION := .cc

注意统一模块中C++文件后缀必须保持一致。

LOCAL_CPPFLAGS 传递额外的标志给C++编译器,如:LOCAL_CPPFLAGS += -ffriend-injection

LOCAL_CXX 指定C++编译器

LOCAL_DX_FLAGS

LOCAL_EXPORT_PACKAGE_RESOURCES

LOCAL_FORCE_STATIC_EXECUTABLE 如果编译的可执行程序要进行静态链接(执行时不依赖于任何动态库),则设置LOCAL_FORCE_STATIC_EXECUTABLE:=true

目前只有libc有静态库形式,这个只有文件系统中/sbin目录下的应用程序会用到,这个目录下的应用程序在运行时通常

文件系统的其它部分还没有加载,所以必须进行静态链接。

LOCAL_GENERATED_SOURCES

LOCAL_INSTRUMENTATION_FOR

LOCAL_INSTRUMENTATION_FOR_PACKAGE_NAME

LOCAL_INTERMEDIATE_SOURCES

LOCAL_INTERMEDIATE_TARGETS

LOCAL_IS_HOST_MODULE

LOCAL_JAR_MANIFEST

LOCAL_JARJAR_RULES

LOCAL_JAVA_LIBRARIES 编译java应用程序和库的时候指定包含的java类库,目前有core和framework两种

多数情况下定义成:LOCAL_JAVA_LIBRARIES := core framework

注意LOCAL_JAVA_LIBRARIES不是必须的,而且编译APK时不允许定义(系统会自动添加)

LOCAL_JAVA_RESOURCE_DIRS

LOCAL_JAVA_RESOURCE_FILES

LOCAL_JNI_SHARED_LIBRARIES

LOCAL_LDFLAGS 传递额外的参数给连接器(务必注意参数的顺序)

LOCAL_LDLIBS 为可执行程序或者库的编译指定额外的库,指定库以"-lxxx"格式,举例:

LOCAL_LDLIBS += -lcurses -lpthread

LOCAL_LDLIBS += -Wl,-z,origin

LOCAL_MODULE 生成的模块的名称(注意应用程序名称用LOCAL_PACKAGE_NAME而不是LOCAL_MODULE)

LOCAL_MODULE_PATH 生成模块的路径

LOCAL_MODULE_STEM

LOCAL_MODULE_TAGS 生成模块的标记

LOCAL_NO_DEFAULT_COMPILER_FLAGS

LOCAL_NO_EMMA_COMPILE

LOCAL_NO_EMMA_INSTRUMENT

LOCAL_NO_STANDARD_LIBRARIES

LOCAL_OVERRIDES_PACKAGES

LOCAL_PACKAGE_NAME APK应用程序的名称

LOCAL_POST_PROCESS_COMMAND

LOCAL_PREBUILT_EXECUTABLES 预编译including $(BUILD_PREBUILT)或者$(BUILD_HOST_PREBUILT)时所用,指定需要复制的可执行文件

LOCAL_PREBUILT_JAVA_LIBRARIES

LOCAL_PREBUILT_LIBS 预编译including $(BUILD_PREBUILT)或者$(BUILD_HOST_PREBUILT)时所用, 指定需要复制的库.

LOCAL_PREBUILT_OBJ_FILES

LOCAL_PREBUILT_STATIC_JAVA_LIBRARIES

LOCAL_PRELINK_MODULE 是否需要预连接处理(默认需要,用来做动态库优化)

LOCAL_REQUIRED_MODULES 指定模块运行所依赖的模块(模块安装时将会同步安装它所依赖的模块)

LOCAL_RESOURCE_DIR

LOCAL_SDK_VERSION

LOCAL_SHARED_LIBRARIES 可链接动态库

LOCAL_SRC_FILES 编译源文件

LOCAL_STATIC_JAVA_LIBRARIES

LOCAL_STATIC_LIBRARIES 可链接静态库

LOCAL_UNINSTALLABLE_MODULE

LOCAL_UNSTRIPPED_PATH

LOCAL_WHOLE_STATIC_LIBRARIES 指定模块所需要载入的完整静态库(这些精通库在链接是不允许链接器删除其中无用的代码)

LOCAL_YACCFLAGS

OVERRIDE_BUILT_MODULE_PATH

android studio怎么配置编译so库

在app的build文件中,注意不是整个project的build.gradle文件中的android{}中加入

sourceSets{

main{

jniLibs.srcDirs=['libs']

}

}

就行了。然后把so文件夹armeabi添加到libs中就行了。不用打包了

android开发,怎么使用ndk编译成.so文件

一、首先下载android-ndk,官方网站是:

目前最新的版本是android-ndk-r8e-windows-x86.zip,下载地址:

下载后把压缩包解压出来,例如:D:\ndk,目录下的ndk-build.cmd就是用来编译的批处理命令。

二、编译,打开cmd命令行窗口,cd进入目录:D:\ndk\samples\hello-jni,

然后执行命令:D:\ndk\ndk-build.cmd(如果设置过环境变量则直接使用ndk-build.cmd)来编译hello-jni,如果没有错误会输出:

Gdbserver : [arm-linux-androideabi-4.6] libs/armeabi/gdbserver

Gdbsetup : libs/armeabi/gdb.setup

"Compile thumb : hello-jni = hello-jni.c

SharedLibrary : libhello-jni.so

Install : libhello-jni.so = libs/armeabi/libhello-jni.so

三、创建android应用程序并使用so文件

打开eclipse创建一个android应用程序HelloJni,默认的com.example.hellojni包下面有一个MainActivity.java,

在此包下添加一个HelloJni.java,


文章标题:android编译so,android编译so库
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