Build AAR package as part of AOSP build

[adhiti]

Need information on building AAR package using AOSP build. What are the changes required in Android.mk to build AAR package?

For Ex: for static JAR we have include $(BUILD_STATIC_AAR_LIBRARY)

 to build static JAR.

[Ying Wang]

The build system automatically sets up rule to build .aar when you  include $(BUILD_STATIC_AAR_LIBRARY) and the library has LOCAL_RESOURCE_DIR.

See https://android.googlesource.com/platform/build/+/master/core/static_java_library.mk#133 .

But it's not built by default. You need to run something like "make out/target/common/obj/JAVA_LIBRARIES/<library_name>_intermediates/javalib.aar to get it built.

 

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[satyanarayana Murthy desala]

Hi Adhiti,

I am also trying to build a module as AAR in AOSP build, Can you help me by sharing the mk file to achieve my task


Regards
Murthy

[erik.gil...@gmail.com]

Hi,

Can you please elaborate your answer? I failed to build an AAR with the instructions in your post/commit.

Regards
Erik

[rajesh khetan]

Not able to build aar using $(BUILD_STATIC_AAR_LIBRARY) . Can you please post your Android.mk 

On Thursday, March 31, 2016 at 8:18:14 PM UTC+5:30, adhiti wrote:

[Ankit Bhargava]

Do you able to build AAR package using AOSP build? is it possible to do so?

[kush singh]

To build the AAR file from the AOSP build, you need to make the Android.mk file for the that lib like below:-

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

LOCAL_SDK_VERSION := current
LOCAL_MODULE_TAGS := optional

LOCAL_MODULE := YourLibName

LOCAL_STATIC_JAVA_LIBRARIES :=android-common \
    android-support-v4 \
    android-support-design \
    android-support-v7-appcompat \
    android-support-design-res \
    android-support-v7-cardview


LOCAL_STATIC_JAVA_AAR_LIBRARIES:= name_of_any_aar_lib_your_using_your_lib

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

res_dirs := res \

LOCAL_RESOURCE_DIR := $(addprefix $(LOCAL_PATH)/, $(res_dirs)) \
    prebuilts/sdk/current/support/v7/cardview/res \
    prebuilts/sdk/current/support/v7/appcompat/res \
    prebuilts/sdk/current/support/design/res \

LOCAL_AAPT_FLAGS := \
    --auto-add-overlay \
    --extra-packages android.support.v7.cardview \
    --extra-packages android.support.v7.appcompat \
    --extra-packages android.support.design \
    --extra-packages package_name_of_any_aar_lib_your_using_your_lib


LOCAL_JACK_ENABLED := disabled
LOCAL_PROGUARD_ENABLED := disabled

include $(BUILD_STATIC_JAVA_LIBRARY)
##################################################
include $(CLEAR_VARS)

LOCAL_PREBUILT_STATIC_JAVA_LIBRARIES := prebuild_libs_if_any


include $(BUILD_MULTI_PREBUILT)

include $(call all-makefiles-under,$(LOCAL_PATH))

you need to use include $(BUILD_STATIC_JAVA_LIBRARY) instead of include $(BUILD_STATIC_AAR_LIBRARY) it worked for me
and save this make file with name Android.mk in you module, then to build use below command



make YourLibName out/target/common/obj/JAVA_LIBRARIES/YourLibName_intermediates/YourLibName.aar

[Sebotor]

Hello,

I might be NOT understanding something...

Did anyone tried this yet or was successful on building aar library within the AOSP, which can be reused by other apps in the tree?  

I had been trying to build my custom aar library in the AOSP build for several weeks, but it doesn't work.  

1. With the "make YourLibName out/target/common/obj/JAVA_LIBRARIES/YourLibName_intermediates/YourLibName.aar", it gives me the following error

Starting build with ninja

ninja: Entering directory `.'

ninja: error: unknown target 'out/target/common/obj/JAVA_LIBRARIES/YourLibName_intermediates/YourLibName.aar'

make: *** [ninja_wrapper] Error 1

2. The only thing that works are the following commands

- In the the Library directory:

mm

- In the main directory:

make YourLibName

3. After the build, the following files get produced

in-out/target/poroduct/.../obj/JAVA_LIBRARIES/YourLibName_intermediates/

total 5668

rw-rw-r-- 1 sebotor sebotor 2428 Jan 18 07:45 javalib.jar

in-out/target/common/obj/JAVA_LIBRARIES/YourLibName_intermediates/

total 6064

drwxrwxr-x 4 sebotor sebotor   4096 Jan 18 07:45 classes

-rw-rw-r-- 1 sebotor sebotor   2428 Jan 18 07:45 classes-full-debug.jar

-rw-rw-r-- 1 sebotor sebotor   2428 Jan 18 07:45 classes.jar

-rw-rw-r-- 1 sebotor sebotor   2428 Jan 18 07:45 classes-jarjar.jar

-rw-rw-r-- 1 sebotor sebotor   2428 Jan 18 07:45 javalib.jar

-rw-rw-r-- 1 sebotor sebotor   3930 Jan 18 07:45 proguard_options

-rw-rw-r-- 1 sebotor sebotor 385622 Jan 18 07:45 public_resources.xml

drwxrwxr-x 4 sebotor sebotor   4096 Jan 18 07:45 src

According to the google docs, even if the aar (or zip) is not created and the files are in those directories, I would hope to see something that resembles the documentation:

https://developer.android.com/studio/projects/android-library.html

Am I missing something or mis-understading?  Please let me know.

Thank you,

Sebotor

[Tony Guo]

Hi, 

Instead of  make YourLibName out/target/common/obj/JAVA_LIBRARIES/YourLibName_intermediates/YourLibName.aar Could you please try

make YourLibName out/target/common/obj/JAVA_LIBRARIES/YourLibName_intermediates/javalib.aar




at least, it works on my AOSP build environment.

Kind regards,

Tony

[Sebastian Tomaszewski]

Hello Tony,

Thanks for the reply.  

I am NOT sure on whether or NOT that it works.  The problem that I had seen last June was related to the build environment that I am having with the AOSP tree.  Unfortunately I am stuck right now, because I can't update it (for various reasons).  Saying this, I found other work around this, by using other way to the things that I wanted to do.

Thanks,

Sebo

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[Vaibhav Shinde]

Hi Tony,

With these instruction I was able to build aar library using Android.mk, but how can we make aar library with Android.bp ?

Thanks,

Vaibhav

[Ray]

Hi Tony,

It worked with your solution, I could get aar by using this command.  it seems it didn't work when I imported this aar into android studio. In my aar, I imported another jar by using 

include packages/services/xxx/xxx-lib/xxx.mk in my aar make file. 

This xxx.mk included support-annotations library, my app included implementation 'com.android.support:appcompat-v7', appcompat-v7 also included support-annotations. when I build it, I got below error:

AGPBI: {"kind":"error","text":"Program type already present: android.support.annotation.Dimension","sources":[{}],"tool":"D8"}

Do you guys know how to fix this kind of issue?

implementation(name:'mysdk', ext:'aar'){
    exclude group: 'com.android.support', module:'support-annotations'
}

Unfortunately, it didn't work. Any suggestion for this error?

Thanks,

Ray