Need help exposing library / class paths in AOSP P (Android 9) from my own .jar file inside vendor

[Elliott Mazzuca]

I tried to give a specific title and i will elaborate a bit more:

What i am trying to do is expose the classes that are inside my jar file so they are on the default class path.

I have a sample app to test if this is working that i created that would uses these classes.  But they don't appear in the images class path.  so i get a "ClassNotFound Exception" when i try to instantiate. 

I have a custom .Jar file where i have my own package, lets call it com.sample.myCustomLibrary

This jar file is created in the vendor space in AOSP P (android 9) using an Android.bp file.

inside my Android.bp file, i have a "java_library"

that looks like this:

// myCustomLibrary.jar
java_library {
    name: "com.sample.myCustomLibrary",
    owner: "sampleOwner",
    installable: true,




    javacflags = [
        "-Xmaxwarns 9999999",
    ],


    srcs: [
        "lib/src/main/java/**/*.java",
    ],


    dxflags: [                        // not sure if i need this, but it didn't work
        "--core-library",
        "--multi-dex",
    ],


    optimize: {
        proguard_flags_files: [
            "lib/src/main/proguard-rules.pro",
        ],
    },




    vendor: true,  // not sure if i need this but it didn't work
    dex_preopt: {  // not sure if i need this but it didn't work
        app_image: true,
    },
}

I also added some of the classes to "preloaded-classes"  under frameworks/base/config/preloaded-classes

When i create a new AOSP build, i can see that the classes that i put into this "preloaded-classes" file are not exposed:

W/Zygote: Class not found for preloading: com.sample.myCustomLibrary.sampleClass1

W/Zygote: Class not found for preloading: com.sample.myCustomLibrary.sampleClass2

W/Zygote: Class not found for preloading: com.sample.myCustomLibrary.sampleClass3

and i added the package to the /build/make/core/tasks/check_boot_jars/package_whitelist.txt

com\.sample\.myCusomLibrary

though i can't get my classes inside my pacakge to show up on the default class path.

Any ideas on the missing steps i need to take?

thanks!

[Colin Cross]

You can set PRODUCT_BOOT_JARS in your product makefile to add a jar to the bootclasspath, but I'd suggest providing it as a library that the apps that need it can load.

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[Elliott Mazzuca]

Thaks for the fast reply Colin!

I tried adding the suggested change into my local Android.mk file and now i get the following issue:

vendor/xxxx/sample/mycustomelib/apk/anotherSampelFolder/Android.mk:20: error: cannot assign to readonly variable: PRODUCT_BOOT_JARS


why is this considered a readonly variable?  is there a prerequisite step i need to do before setting this?

thanks again!

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[Colin Cross]

PRODUCT_BOOT_JARS can't be set in your Android.mk, it has to be set in your product makefiles that are selected by your lunch target.  

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[Elliott Mazzuca]

Thanks for the help Colin,

that did the trick for me!

[Chari Veera]

Hello Colin,

I am able to add my jar to PRODUCT_BOOT_JARS, but I am facing following error. Do I miss anything?

Parsing out/target/product/msm8953_64/obj/ETC/vendor_sepolicy.cil_intermediates/vendor_policy_raw.cil

[ 59% 7673/12956] target dex2oat: out/target/product/msm8953_64/dex_bootjars/system/framework/arm64/boot.art

FAILED: out/target/product/msm8953_64/dex_bootjars/system/framework/arm64/boot.art

/bin/bash -c "(mkdir -p out/target/product/msm8953_64/symbols/system/framework/arm64/ ) && (rm -f out/target/product/msm8953_64/dex_bootjars/system/framework/arm64//*.art out/target/product/msm8953_64/dex_bootjars/system/framework/arm64//*.oat out/target/product/msm8953_64/dex_bootjars/system/framework/arm64//*.art.rel ) && (rm -f out/target/product/msm8953_64/symbols/system/framework/arm64//*.art ) && (rm -f out/target/product/msm8953_64/symbols/system/framework/arm64//*.oat ) && (rm -f out/target/product/msm8953_64/symbols/system/framework/arm64//*.art.rel ) && (ANDROID_LOG_TAGS=\"*:e\" out/host/linux-x86/bin/dex2oatd --runtime-arg -Xms64m   --runtime-arg -Xmx64m   --compiler-filter=speed-profile --profile-file=out/target/product/msm8953_64/dex_bootjars/system/framework/boot.prof   --dex-file=out/target/common/obj/JAVA_LIBRARIES/com.nxp.nfc.nq_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/qcom.fmradio_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/com.qualcomm.qti.camera_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/QPerformance_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/UxPerformance_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/core-oj_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/core-libart_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/conscrypt_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/okhttp_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/bouncycastle_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/apache-xml_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/ext_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/framework_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/telephony-common_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/voip-common_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/ims-common_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/android.hidl.base-V1.0-java_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/android.hidl.manager-V1.0-java_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/qolib_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/framework-oahl-backward-compatibility_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/android.test.base_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/tcmiface_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/WfdCommon_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/oem-services_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/telephony-ext_intermediates/javalib.jar   --dex-location=/system/framework/com.nxp.nfc.nq.jar --dex-location=/system/framework/qcom.fmradio.jar --dex-location=/system/framework/com.qualcomm.qti.camera.jar --dex-location=/system/framework/QPerformance.jar --dex-location=/system/framework/UxPerformance.jar --dex-location=/system/framework/core-oj.jar --dex-location=/system/framework/core-libart.jar --dex-location=/system/framework/conscrypt.jar --dex-location=/system/framework/okhttp.jar --dex-location=/system/framework/bouncycastle.jar --dex-location=/system/framework/apache-xml.jar --dex-location=/system/framework/ext.jar --dex-location=/system/framework/framework.jar --dex-location=/system/framework/telephony-common.jar --dex-location=/system/framework/voip-common.jar --dex-location=/system/framework/ims-common.jar --dex-location=/system/framework/android.hidl.base-V1.0-java.jar --dex-location=/system/framework/android.hidl.manager-V1.0-java.jar --dex-location=/system/framework/qolib.jar --dex-location=/system/framework/framework-oahl-backward-compatibility.jar --dex-location=/system/framework/android.test.base.jar --dex-location=/system/framework/tcmiface.jar --dex-location=/system/framework/WfdCommon.jar --dex-location=/system/framework/oem-services.jar --dex-location=/system/framework/telephony-ext.jar   --oat-symbols=out/target/product/msm8953_64/symbols/system/framework/arm64/boot.oat   --oat-file=out/target/product/msm8953_64/dex_bootjars/system/framework/arm64/boot.oat   --oat-location=/system/framework/arm64/boot.oat   --image=out/target/product/msm8953_64/dex_bootjars/system/framework/arm64/boot.art --base=0x70000000   --instruction-set=arm64   --instruction-set-variant=generic   --instruction-set-features=default   --android-root=out/target/product/msm8953_64/system   --runtime-arg -Xnorelocate --compile-pic   --no-generate-debug-info --generate-build-id   --multi-image --no-inline-from=core-oj.jar   --abort-on-hard-verifier-error   --abort-on-soft-verifier-error    --generate-mini-debug-info     || ( echo \"ERROR: Dex2oat failed to compile a boot image. It is likely that the boot classpath is inconsistent. Rebuild with ART_BOOT_IMAGE_EXTRA_ARGS=\"--runtime-arg -verbose:verifier\" to see verification errors.\" ; false ) &&  ANDROID_LOG_TAGS=\"*:e\" ANDROID_ROOT=out/target/product/msm8953_64/system ANDROID_DATA=out/target/product/msm8953_64/dex_bootjars/system/framework/arm64/ out/host/linux-x86/bin/patchoatd   --input-image-location=out/target/product/msm8953_64/dex_bootjars/system/framework/boot.art   --output-image-relocation-directory=out/target/product/msm8953_64/dex_bootjars/system/framework/arm64/   --instruction-set=arm64   --base-offset-delta=0x10000000 )"

dex2oatd F 09-05 16:54:32  3562  3562 compiler_driver.cc:942] Had 9 soft failure(s) verifying all classes, and was asked to abort in such situations. Please check the log.

ERROR: Dex2oat failed to compile a boot image. It is likely that the boot classpath is inconsistent. Rebuild with ART_BOOT_IMAGE_EXTRA_ARGS=--runtime-arg -verbose:verifier to see verification errors.

[ 59% 7718/12956] target dex2oat: out/target/product/msm8953_64/dex_bootjars/system/framework/arm/boot.art

FAILED: out/target/product/msm8953_64/dex_bootjars/system/framework/arm/boot.art

/bin/bash -c "(mkdir -p out/target/product/msm8953_64/symbols/system/framework/arm/ ) && (rm -f out/target/product/msm8953_64/dex_bootjars/system/framework/arm//*.art out/target/product/msm8953_64/dex_bootjars/system/framework/arm//*.oat out/target/product/msm8953_64/dex_bootjars/system/framework/arm//*.art.rel ) && (rm -f out/target/product/msm8953_64/symbols/system/framework/arm//*.art ) && (rm -f out/target/product/msm8953_64/symbols/system/framework/arm//*.oat ) && (rm -f out/target/product/msm8953_64/symbols/system/framework/arm//*.art.rel ) && (ANDROID_LOG_TAGS=\"*:e\" out/host/linux-x86/bin/dex2oatd --runtime-arg -Xms64m --runtime-arg -Xmx64m   --compiler-filter=speed-profile --profile-file=out/target/product/msm8953_64/dex_bootjars/system/framework/boot.prof   --dex-file=out/target/common/obj/JAVA_LIBRARIES/com.nxp.nfc.nq_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/qcom.fmradio_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/com.qualcomm.qti.camera_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/QPerformance_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/UxPerformance_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/core-oj_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/core-libart_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/conscrypt_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/okhttp_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/bouncycastle_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/apache-xml_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/ext_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/framework_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/telephony-common_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/voip-common_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/ims-common_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/android.hidl.base-V1.0-java_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/android.hidl.manager-V1.0-java_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/qolib_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/framework-oahl-backward-compatibility_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/android.test.base_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/tcmiface_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/WfdCommon_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/oem-services_intermediates/javalib.jar --dex-file=out/target/common/obj/JAVA_LIBRARIES/telephony-ext_intermediates/javalib.jar   --dex-location=/system/framework/com.nxp.nfc.nq.jar --dex-location=/system/framework/qcom.fmradio.jar --dex-location=/system/framework/com.qualcomm.qti.camera.jar --dex-location=/system/framework/QPerformance.jar --dex-location=/system/framework/UxPerformance.jar --dex-location=/system/framework/core-oj.jar --dex-location=/system/framework/core-libart.jar --dex-location=/system/framework/conscrypt.jar --dex-location=/system/framework/okhttp.jar --dex-location=/system/framework/bouncycastle.jar --dex-location=/system/framework/apache-xml.jar --dex-location=/system/framework/ext.jar --dex-location=/system/framework/framework.jar --dex-location=/system/framework/telephony-common.jar --dex-location=/system/framework/voip-common.jar --dex-location=/system/framework/ims-common.jar --dex-location=/system/framework/android.hidl.base-V1.0-java.jar --dex-location=/system/framework/android.hidl.manager-V1.0-java.jar --dex-location=/system/framework/qolib.jar --dex-location=/system/framework/framework-oahl-backward-compatibility.jar --dex-location=/system/framework/android.test.base.jar --dex-location=/system/framework/tcmiface.jar --dex-location=/system/framework/WfdCommon.jar --dex-location=/system/framework/oem-services.jar --dex-location=/system/framework/telephony-ext.jar   --oat-symbols=out/target/product/msm8953_64/symbols/system/framework/arm/boot.oat   --oat-file=out/target/product/msm8953_64/dex_bootjars/system/framework/arm/boot.oat   --oat-location=/system/framework/arm/boot.oat   --image=out/target/product/msm8953_64/dex_bootjars/system/framework/arm/boot.art --base=0x70000000 --instruction-set=arm   --instruction-set-variant=cortex-a53   --instruction-set-features=default   --android-root=out/target/product/msm8953_64/system   --runtime-arg -Xnorelocate --compile-pic   --no-generate-debug-info --generate-build-id   --multi-image --no-inline-from=core-oj.jar   --abort-on-hard-verifier-error   --abort-on-soft-verifier-error    --generate-mini-debug-info     || ( echo \"ERROR: Dex2oat failed to compile a boot image. It is likely that the boot classpath is inconsistent. Rebuild with ART_BOOT_IMAGE_EXTRA_ARGS=\"--runtime-arg -verbose:verifier\" to see verification errors.\" ; false ) &&  ANDROID_LOG_TAGS=\"*:e\" ANDROID_ROOT=out/target/product/msm8953_64/system ANDROID_DATA=out/target/product/msm8953_64/dex_bootjars/system/framework/arm/ out/host/linux-x86/bin/patchoatd   --input-image-location=out/target/product/msm8953_64/dex_bootjars/system/framework/boot.art   --output-image-relocation-directory=out/target/product/msm8953_64/dex_bootjars/system/framework/arm/   --instruction-set=arm   --base-offset-delta=0x10000000 )"

dex2oatd F 09-05 16:54:33  3559  3559 compiler_driver.cc:942] Had 9 soft failure(s) verifying all classes, and was asked to abort in such situations. Please check the log.

ERROR: Dex2oat failed to compile a boot image. It is likely that the boot classpath is inconsistent. Rebuild with ART_BOOT_IMAGE_EXTRA_ARGS=--runtime-arg -verbose:verifier to see verification errors.

[ 59% 7723/12956] Building kernel...

make: Entering directory '/home/charid/AOSP_9/Gen4_Lucy/kernel/msm-4.9'

make[1]: Entering directory '/home/charid/AOSP_9/Gen4_Lucy/out/target/product/msm8953_64/obj/kernel/msm-4.9'

[Colin Cross]

Follow the instructions in the error and it will give you a ton more information, buried in it will be which classes it is failing to find:

ART_BOOT_IMAGE_EXTRA_ARGS="--runtime-arg -verbose:verifier" m

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