android NDK编译多个so文件

水深无声 2022-08-12 02:59 273阅读 0赞

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

转帖：http://blog.sina.com.cn/s/blog\_53ceb64001019ghz.html

[Android]: http://www.rosoo.net/a/list_37_1.html