Android.bp入门指南之Android.mk转换成Android.bp
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Android.bp入门指南之Android.mk转换成Android.bp
前言
一 初探androidmk 1.1 androidmk的源码和位置
1.2 androidmk的用法
1.3 androidmk的实际使用
结语
作者：进阶的凯子
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：
tangkw@Ubuntu16-Model:~/ssd/qcom_64/msm8953-9$ ls -l build
total 16
drwxr-xr-x 14 tangkw pd 4096 Feb 17 14:18 blueprint
lrwxrwxrwx 1 tangkw pd 25 Feb 20 11:17 buildspec.mk.default -> make/buildspec.mk.default
lrwxrwxrwx 1 tangkw pd 17 Feb 20 11:17 CleanSpec.mk -> make/CleanSpec.mk
lrwxrwxrwx 1 tangkw pd 9 Feb 20 11:17 core -> make/core
lrwxrwxrwx 1 tangkw pd 16 Feb 20 11:17 envsetup.sh -> make/envsetup.sh
drwxr-xr-x 5 tangkw pd 4096 Feb 17 14:18 kati
drwxr-xr-x 6 tangkw pd 4096 Feb 20 15:05 make
drwxr-xr-x 21 tangkw pd 4096 Feb 20 15:08 soong
lrwxrwxrwx 1 tangkw pd 11 Feb 20 11:17 target -> make/target
lrwxrwxrwx 1 tangkw pd 10 Feb 20 11:17 tools -> make/tools
而我们的androidmk的源码目录位置如下：
tangkw@Ubuntu16-Model:~/ssd/qcom_64/msm8953-9$ ls -l build/soong/androidmk/
total 12
-rw-r--r-- 1 tangkw pd 1302 Feb 17 14:18 Android.bp
drwxr-xr-x 3 tangkw pd 4096 Feb 17 14:18 cmd
drwxr-xr-x 2 tangkw pd 4096 Feb 17 14:18 parser
编译Android源码以后，最好androidmk生成的位置如下：
tangkw@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：
tangkw@Ubuntu16-Model:~/ssd/qcom_64/msm8953-9$ androidmk
usage: androidmk [flags]
androidmk parses as an Android.mk file and attempts to output an analogous Android.bp file (to standard out)
tangkw@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_class="lazy" data-src_FILES := $(call all-java-files-under, class="lazy" data-src)
LOCAL_class="lazy" data-src_FILES += \
class="lazy" data-src/android/bluetooth/IPaxBtPrinter.aidl \
#LOCAL_SDK_VERSION := current
LOCAL_PRIVATE_PLATFORM_APIS := true
LOCAL_PACKAGE_NAME := PaxBtPrinter
#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"],
class="lazy" data-srcs: ["class="lazy" data-src*.java"] + ["class="lazy" data-src/android/bluetooth/IPaxBtPrinter.aidl"],
//LOCAL_SDK_VERSION := current
// ANDROIDMK TRANSLATION ERROR: unsupported assignment to LOCAL_PRIVATE_PLATFORM_APIS
// LOCAL_PRIVATE_PLATFORM_APIS := true
name: "PaxBtPrinter",
//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_class="lazy" data-src_FILES := apitest.c
LOCAL_CFLAGS += -Wno-error=implicit-function-declaration
LOCAL_SHARED_LIBRARIES := libcutils liblog \
libutils \
libpaxdevice \
libpaxapi \
libpaxcfg \
libpaxspdev \
libpaxlog\
libpaxadapter
LOCAL_C_INCLUDES += paxdroid/external/pax/device/include \
paxdroid/external/pax/lib/libpaxapiclient \
paxdroid/external/pax/lib/libspdev \
paxdroid/external/pax/lib/libpaxlog
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",
class="lazy" data-srcs: ["apitest.c"],
cflags: ["-Wno-error=implicit-function-declaration"],
shared_libs: [
"libcutils",
"liblog",
"libutils",
"libpaxdevice",
"libpaxapi",
"libpaxcfg",
"libpaxspdev",
"libpaxlog",
"libpaxadapter",
] + ["libcutils"],
include_dirs: [
"paxdroid/external/pax/device/include",
"paxdroid/external/pax/lib/libpaxapiclient",
"paxdroid/external/pax/lib/libspdev",
"paxdroid/external/pax/lib/libpaxlog",
],
local_include_dirs: ["."],
}
先让我们看看生成动态库的的Android.mk的定义：
LOCAL_PATH := $(call my-dir)
class="lazy" data-src_files := paxmisc.c
class="lazy" data-src_files += default_misc.c
# Share Library
include $(CLEAR_VARS)
LOCAL_C_INCLUDES += paxdroid/external/systool/include
LOCAL_class="lazy" data-src_FILES := \
${class="lazy" data-src_files}
LOCAL_MODULE := libpaxmisc
LOCAL_SHARED_LIBRARIES := liblog libcutils
LOCAL_MODULE_TAGS := optional
include $(BUILD_SHARED_LIBRARY)
# Static Library
include $(CLEAR_VARS)
LOCAL_C_INCLUDES += paxdroid/external/systool/include
LOCAL_class="lazy" data-src_FILES := \
${class="lazy" data-src_files}
LOCAL_MODULE := libpaxmisc
LOCAL_STATIC_LIBRARIES := liblog libcutils
LOCAL_MODULE_TAGS := optional
include $(BUILD_STATIC_LIBRARY)
转换后的Android.bp文件如下：
class="lazy" data-src_files = ["paxmisc.c"]
class="lazy" data-src_files += ["default_misc.c"]
// Share Library
cc_library_shared {
include_dirs: ["paxdroid/external/systool/include"],
class="lazy" data-srcs: class="lazy" data-src_files,
name: "libpaxmisc",
shared_libs: [
"liblog",
"libcutils",
],
}
// Static Library
cc_library_static {
include_dirs: ["paxdroid/external/systool/include"],
class="lazy" data-srcs: class="lazy" data-src_files,
name: "libpaxmisc",
static_libs: [
"liblog",
"libcutils",
],
}
在这个Android.mk里面我们带上了宏编译：
include $(CLEAR_VARS)
LOCAL_MODULE_TAGS := optional
LOCAL_JAVA_LIBRARIES := services
LOCAL_class="lazy" data-src_FILES := $(call all-java-files-under, class="lazy" data-src)
ifeq (1,$(strip $(shell expr $(PLATFORM_SDK_VERSION) \>= 28)))
LOCAL_class="lazy" data-src_FILES += compat/android-v28-later/SPUtilCompat.java
else
LOCAL_class="lazy" data-src_FILES += compat/default/SPUtilCompat.java
endif
LOCAL_class="lazy" data-src_FILES += \
class="lazy" data-src/com/pax/aidl/PaxSystemUtil.aidl \
class="lazy" data-src/com/pax/aidl/PhysicalKey.aidl \
class="lazy" data-src/android/bluetooth/IPaxBtPrinter.aidl
LOCAL_STATIC_JAVA_LIBRARIES := litepal
LOCAL_PROGUARD_FLAG_FILES := proguard.cfg
#LOCAL_SDK_VERSION := current
LOCAL_PRIVATE_PLATFORM_APIS := true
LOCAL_PACKAGE_NAME := PaxSPManager
LOCAL_CERTIFICATE := platform
执行androidmk命令进行转换：
android_app {
libs: ["services"],
class="lazy" data-srcs: ["class="lazy" data-src*.java"] + ["compat/android-v28-later/SPUtilCompat.java"] + ["compat/default/SPUtilCompat.java"] + [ // ANDROIDMK TRANSLATION ERROR: unsupported conditional
// ifeq (1,$(strip $(shell expr $(PLATFORM_SDK_VERSION) \>= 28)))
// ANDROIDMK TRANSLATION ERROR: else from unsupported contitional
// else
// ANDROIDMK TRANSLATION ERROR: endif from unsupported contitional
// endif
"class="lazy" data-src/com/pax/aidl/PaxSystemUtil.aidl",
//LOCAL_SDK_VERSION := current
"class="lazy" data-src/com/pax/aidl/PhysicalKey.aidl",
// ANDROIDMK TRANSLATION ERROR: unsupported assignment to LOCAL_PRIVATE_PLATFORM_APIS
"class="lazy" data-src/android/bluetooth/IPaxBtPrinter.aidl",
// LOCAL_PRIVATE_PLATFORM_APIS := true
],
//the jni callback error!!!!! zhuxy
static_libs: ["litepal"],
optimize: {
proguard_flag_files: ["proguard.cfg"],
enabled: false,
},
name: "PaxSPManager",
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。
作者：进阶的凯子
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