欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  移动技术

Android.bp入门指南之Android.mk转换成Android.bp

程序员文章站 2022-06-15 12:30:27
    Android.bp入门指南之Android.mk转换成Android.bp前言  在前面的篇章初识Android.bp和Android.bp入门指南之语法初识我们对Android.bp是啥和基本语法都有了一个初步层次的认识。Android的妈咪谷歌当然也考虑到了,从Android.mk切换到Android,mk需要一定的时间,从而为我们精心开发了一个工具androidmk,但是这个......

    Android.bp入门指南之Android.mk转换成Android.bp


前言

  在前面的篇章初识Android.bpAndroid.bp入门指南之语法初识我们对Android.bp是啥和基本语法都有了一个初步层次的认识。Android的妈咪谷歌当然也考虑到了,从Android.mk切换到Android,mk需要一定的时间,从而为我们精心开发了一个工具androidmk,但是这个工具不是很完善,对于一些Android.mk中的宏开关就无从处理了。本篇今天就带领大伙认识一下androidmk工具的使用。

注意:本篇是以Android 9的工程来进行讲解的。



一 初探androidmk

1.1 androidmk的源码和位置

首先让我们从androidmk的框架和源码如下来说起,我们知道Android的最新编译系统的文件架构如下:
Android.bp入门指南之Android.mk转换成Android.bp

xxx@Ubuntu16-Model:~/ssd/qcom_64/msm8953-9$ ls -l build
total 16
drwxr-xr-x 14 xxx pd 4096 Feb 17 14:18 blueprint
lrwxrwxrwx  1 xxx pd   25 Feb 20 11:17 buildspec.mk.default -> make/buildspec.mk.default
lrwxrwxrwx  1 xxx pd   17 Feb 20 11:17 CleanSpec.mk -> make/CleanSpec.mk
lrwxrwxrwx  1 xxx pd    9 Feb 20 11:17 core -> make/core
lrwxrwxrwx  1 xxx pd   16 Feb 20 11:17 envsetup.sh -> make/envsetup.sh
drwxr-xr-x  5 xxx pd 4096 Feb 17 14:18 kati
drwxr-xr-x  6 xxx pd 4096 Feb 20 15:05 make
drwxr-xr-x 21 xxx pd 4096 Feb 20 15:08 soong
lrwxrwxrwx  1 xxx pd   11 Feb 20 11:17 target -> make/target
lrwxrwxrwx  1 xxx pd   10 Feb 20 11:17 tools -> make/tools

而我们的androidmk的源码目录位置如下:
Android.bp入门指南之Android.mk转换成Android.bp

xxx@Ubuntu16-Model:~/ssd/qcom_64/msm8953-9$ ls -l build/soong/androidmk/
total 12
-rw-r--r-- 1 xxx pd 1302 Feb 17 14:18 Android.bp
drwxr-xr-x 3 xxx pd 4096 Feb 17 14:18 cmd
drwxr-xr-x 2 xxx pd 4096 Feb 17 14:18 parser

编译Android源码以后,最好androidmk生成的位置如下:
Android.bp入门指南之Android.mk转换成Android.bp

xxx@Ubuntu16-Model:~/ssd/qcom_64/msm8953-9$ find .  -name androidmk -type f
./out/soong/host/linux-x86/bin/androidmk

1.2 androidmk的用法

在前面的章节,我们降解了androidmk的源码位置和编译完成之后的执行文件的路径,在这个章节我们将要讲解androidmk的使用,如下:
Android.bp入门指南之Android.mk转换成Android.bp

xxx@Ubuntu16-Model:~/ssd/qcom_64/msm8953-9$ androidmk 
usage: androidmk [flags] <inputFile>

androidmk parses <inputFile> as an Android.mk file and attempts to output an analogous Android.bp file (to standard out)
xxx@Ubuntu16-Model:~/ssd/qcom_64/msm8953-9$

用一句通俗的话来讲就是androidmk Android.mk > Android.bp


1.3 androidmk的实际使用

好了,前面说了这么多,都是为了实际运行,那么我们通过几个实例来看看androidmk究竟有啥魔力。

1.3.1 生成App

让我们先来看看生成App的Android.mk文件如下:

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

LOCAL_MODULE_TAGS := optional

LOCAL_JAVA_LIBRARIES := services
LOCAL_SRC_FILES := $(call all-java-files-under, src)
LOCAL_SRC_FILES += \
    src/android/bluetooth/IXxxBtPrinter.aidl \

#LOCAL_SDK_VERSION := current
LOCAL_PRIVATE_PLATFORM_APIS := true
LOCAL_PACKAGE_NAME := XxxBtPrinter
#LOCAL_PROGUARD_FLAG_FILES := proguard.flags

#add this for generate and print barcode
LOCAL_STATIC_JAVA_LIBRARIES := zxing_api
LOCAL_DEX_PREOPT := false
LOCAL_CERTIFICATE := platform

include $(BUILD_PACKAGE)

# Use the folloing include to make our test apk.
include $(call all-makefiles-under,$(LOCAL_PATH))

include $(CLEAR_VARS)
LOCAL_PREBUILT_STATIC_JAVA_LIBRARIES := zxing_api:libs/core_3.2.0.jar
include $(BUILD_MULTI_PREBUILT)

执行转换命令:


//注意生成的不一定要叫做Android.bp可以叫做其它的
androidmk  Android.mk  > Android.bp

让我们先来看看生成Android.bp内容如下:

android_app {

    libs: ["services"],
    srcs: ["src/**/*.java"] + ["src/android/bluetooth/IXxxBtPrinter.aidl"],

    //LOCAL_SDK_VERSION := current
    // ANDROIDMK TRANSLATION ERROR: unsupported assignment to LOCAL_PRIVATE_PLATFORM_APIS
    // LOCAL_PRIVATE_PLATFORM_APIS := true

    name: "XxxBtPrinter",
    //LOCAL_PROGUARD_FLAG_FILES := proguard.flags

    //add this for generate and print barcode
    static_libs: ["zxing_api"],
    dex_preopt: {
        enabled: false,
    },  
    certificate: "platform",

}

// Use the folloing include to make our test apk.

// ANDROIDMK TRANSLATION ERROR: unsupported assignment to LOCAL_PREBUILT_STATIC_JAVA_LIBRARIES
// LOCAL_PREBUILT_STATIC_JAVA_LIBRARIES := zxing_api:libs/core_3.2.0.jar

// ANDROIDMK TRANSLATION ERROR: unsupported include
// include $(BUILD_MULTI_PREBUILT)

这里可以看到预编译的转换是没有成功的,所以androidmk还是有一些不是很智能的,需要手动去修改。

1.3.2 生成可执行文件

先让我们看看生成可执行文件的Android.mk的定义:


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

LOCAL_MODULE := nativetest
LOCAL_SRC_FILES := apitest.c
LOCAL_CFLAGS += -Wno-error=implicit-function-declaration

LOCAL_SHARED_LIBRARIES :=  libcutils liblog     \   
libutils \
libxxxdevice \
libxxxapi \
libxxxcfg \
libxxxspdev \
libxxxlog\
libxxxadapter


LOCAL_C_INCLUDES +=  xxxdroid/external/xxx/device/include    \   
    xxxdroid/external/xxx/lib/libxxxapiclient  \
    xxxdroid/external/xxx/lib/libspdev \
    xxxdroid/external/xxx/lib/libxxxlog 

LOCAL_C_INCLUDES += $(LOCAL_PATH)
LOCAL_SHARED_LIBRARIES += libcutils
include $(BUILD_EXECUTABLE)

转换后的Android.bp文件如下:

cc_binary {

    name: "nativetest",
    srcs: ["apitest.c"],
    cflags: ["-Wno-error=implicit-function-declaration"],

    shared_libs: [
        "libcutils",
        "liblog",
        "libutils",
        "libxxxdevice",
        "libxxxapi",
        "libxxxcfg",
        "libxxxspdev",
        "libxxxlog",
        "libxxxadapter",
    ] + ["libcutils"],
    include_dirs: [
        "xxxdroid/external/xxx/device/include",
        "xxxdroid/external/xxx/lib/libxxxapiclient",
        "xxxdroid/external/xxx/lib/libspdev",
        "xxxdroid/external/xxx/lib/libxxxlog",
    ],  

    local_include_dirs: ["."],

}

1.3.3 生成动态库

先让我们看看生成动态库的的Android.mk的定义:

LOCAL_PATH := $(call my-dir)

src_files := xxxmisc.c

src_files += default_misc.c

# Share Library
include $(CLEAR_VARS)
LOCAL_C_INCLUDES += xxxdroid/external/systool/include

LOCAL_SRC_FILES := \
    ${src_files}

LOCAL_MODULE := libxxxmisc
LOCAL_SHARED_LIBRARIES := liblog libcutils
LOCAL_MODULE_TAGS := optional
include $(BUILD_SHARED_LIBRARY)

# Static Library
include $(CLEAR_VARS)
LOCAL_C_INCLUDES += xxxdroid/external/systool/include

LOCAL_SRC_FILES := \
    ${src_files}

LOCAL_MODULE := libxxxmisc
LOCAL_STATIC_LIBRARIES := liblog libcutils
LOCAL_MODULE_TAGS := optional
include $(BUILD_STATIC_LIBRARY)

转换后的Android.bp文件如下:

src_files = ["xxxmisc.c"]

src_files += ["default_misc.c"]

// Share Library
cc_library_shared {
    include_dirs: ["xxxdroid/external/systool/include"],

    srcs: src_files,

    name: "libxxxmisc",
    shared_libs: [
        "liblog",
        "libcutils",
    ],  

}

// Static Library
cc_library_static {
    include_dirs: ["xxxdroid/external/systool/include"],

    srcs: src_files,

    name: "libxxxmisc",
    static_libs: [
        "liblog",
        "libcutils",
    ],  

}

1.3.4 带宏开关转换失败

在这个Android.mk里面我们带上了宏编译:
Android.bp入门指南之Android.mk转换成Android.bp

include $(CLEAR_VARS)

LOCAL_MODULE_TAGS := optional

LOCAL_JAVA_LIBRARIES := services
LOCAL_SRC_FILES := $(call all-java-files-under, src)

ifeq (1,$(strip $(shell expr $(PLATFORM_SDK_VERSION) \>= 28)))
LOCAL_SRC_FILES += compat/android-v28-later/XXUtilCompat.java
else
LOCAL_SRC_FILES += compat/default/XXUtilCompat.java
endif

LOCAL_SRC_FILES += \
    src/com/xxx/aidl/XxxSystemUtil.aidl \
    src/com/xxx/aidl/PhysicalKey.aidl \
    src/android/bluetooth/IXxxBtPrinter.aidl 

    
    
LOCAL_STATIC_JAVA_LIBRARIES := litepal


LOCAL_PROGUARD_FLAG_FILES := proguard.cfg
#LOCAL_SDK_VERSION := current
LOCAL_PRIVATE_PLATFORM_APIS := true
LOCAL_PACKAGE_NAME := XxxManager

LOCAL_CERTIFICATE := platform

执行androidmk命令进行转换:

android_app {

    libs: ["services"],
    srcs: ["src/**/*.java"] + ["compat/android-v28-later/SPUtilCompat.java"] + ["compat/default/SPUtilCompat.java"] + [ // ANDROIDMK            TRANSLATION ERROR: unsupported conditional
    // ifeq (1,$(strip $(shell expr $(PLATFORM_SDK_VERSION) \>= 28)))

        // ANDROIDMK TRANSLATION ERROR: else from unsupported contitional
        // else

        // ANDROIDMK TRANSLATION ERROR: endif from unsupported contitional
        // endif
        "src/com/xxx/aidl/XxxSystemUtil.aidl",

        //LOCAL_SDK_VERSION := current
        "src/com/xxx/aidl/PhysicalKey.aidl",
        // ANDROIDMK TRANSLATION ERROR: unsupported assignment to LOCAL_PRIVATE_PLATFORM_APIS
        "src/android/bluetooth/IXxxBtPrinter.aidl",
        // LOCAL_PRIVATE_PLATFORM_APIS := true
    ],  

    //the jni callback error!!!!! zhuxy
    static_libs: ["litepal"],

    optimize: {
        proguard_flag_files: ["proguard.cfg"],

        enabled: false,
    },  
    name: "XxxManager",

可以看出androidmk对宏的处理是不对的,这个就需要手动处理了,后续章节会重点说到这个的



结语

修行至此,恭喜读者你已经对Android.mk转换成Android.bp有一定了解了,行走江湖是不可能的了,还需多多磨练才行,在后续篇章中让我们一起学习。这里的androidmk不是万能的,有些情况是不行的,譬如有宏或者预编译的情况。

写在最后

  各位读者看官朋友们,Android.mk转换成Android.bp,希望能吸引你,激发你的学习欲望和斗志。在最后麻烦读者朋友们如果本篇对你有帮助,关注和点赞一下,当然如果有错误和不足的地方也可以拍砖。

本文地址:https://blog.csdn.net/tkwxty/article/details/104411520