答复: 答复: How to build openjdk mobile project android platform successfully and how does the mobile project adapt to bionic C ?

Tue Aug 28 07:44:19 UTC 2018

Hi,

Attachments are my configure and build’s logs and outputs.
Please help figure out how to build the mobile project successfully.

发件人: Johan Vos [mailto:johan.vos at gluonhq.com]
发送时间: 2018年8月28日 15:20
收件人: zhangfan (AZ) <zhangfan147 at huawei.com>
抄送: gary.adams at oracle.com; mobile-dev at openjdk.java.net; xietuo <xietuo at huawei.com>
主题: Re: 答复: How to build openjdk mobile project android platform successfully and how does the mobile project adapt to bionic C ?

Hi,

Configuration and build logs are always helpful.

- Johan

On Tue, Aug 28, 2018 at 4:04 AM zhangfan (AZ) <zhangfan147 at huawei.com<mailto:zhangfan147 at huawei.com>> wrote:
Hi,

I tried using a newer toolchian (android-ndk-13b) and also adding back the code as you guided, but still failed.
I think could you help provide your steps and configurations that can build the mobile project android platform successfully ?
Or need I attach the full configuration and build logs ?
Thanks!

-----邮件原件-----
发件人: gary.adams at oracle.com<mailto:gary.adams at oracle.com> [mailto:gary.adams at oracle.com<mailto:gary.adams at oracle.com>]
发送时间: 2018年8月25日 19:32
收件人: zhangfan (AZ) <zhangfan147 at huawei.com<mailto:zhangfan147 at huawei.com>>; mobile-dev at openjdk.java.net<mailto:mobile-dev at openjdk.java.net>
抄送: xietuo <xietuo at huawei.com<mailto:xietuo at huawei.com>>
主题: Re: 答复: How to build openjdk mobile project android platform successfully and how does the mobile project adapt to bionic C ?

It looks like there was an update in the toolchain and the workaround was removed in perfMemory_linux.cpp when andoid-arm support was included in the mobile repos.

   http://hg.openjdk.java.net/mobile/jdk9/hotspot/rev/647ec6c17c56

You could try adding back the code that was removed, or move up to a newer toolchain. e.g android-ndk-13b was the last toolchain we used

On 8/25/18 6:57 AM, gary.adams at oracle.com<mailto:gary.adams at oracle.com> wrote:
> The android compiler will set the __ANDROID__ build flag.
> The __ANDROID__ workarounds are in the mobile repos.
>
> From the  LOG=debug output can you provide the command line used to
> compile the file that is failing.
>
> I'm not sure you have the right sources or toolchain setup.
>
> On 8/25/18 2:15 AM, zhangfan (AZ) wrote:
>> Hi,
>>
>> Thank you for your quick response.
>> I tried the "make jre-image" command and failed in the same way.
>> Do I need to enable the "__ANDROID__" manually? Because the build
>> errors occur due to the use of the lacking functions the bionic
>> doesn't provide.
>>
>>
>> -----邮件原件-----
>> 发件人: mobile-dev [mailto:mobile-dev-bounces at openjdk.java.net<mailto:mobile-dev-bounces at openjdk.java.net>] 代表
>> gary.adams at oracle.com<mailto:gary.adams at oracle.com>
>> 发送时间: 2018年8月24日 18:45
>> 收件人: guoge (A) <guoge1 at huawei.com<mailto:guoge1 at huawei.com>>; mobile-dev at openjdk.java.net<mailto:mobile-dev at openjdk.java.net>
>> 抄送: xietuo <xietuo at huawei.com<mailto:xietuo at huawei.com>>
>> 主题: Re: How to build openjdk mobile project android platform
>> successfully and how does the mobile project adapt to bionic C ?
>>
>> Only the java runtime libraries were ported to run in the Android app
>> environment.
>> You can not build a full jdk image.
>>
>> The mobile repos already has the needed "#if defined(__ANDROID__) ..."
>> directives with alternate implementations for missing bionic functions.
>>
>> To debug build errors it helps to add "LOG=debug" to your make
>> command line.
>> The error may be in the creation of a local build-jdk image prior to
>> the building of the target platform jre libraries.
>>
>> On 8/24/18 4:13 AM, guoge (A) wrote:
>>> Hi mobile-dev,
>>>
>>>                   I want to build an android openjdk from the mobile
>>> project.(http://hg.openjdk.java.net/mobile/jdk9/)
>>>                   I followed the
>>> guide(http://openjdk.java.net/projects/mobile/android.html) but
>>> failed in the "make images" phase.
>>>                   I tried two versions of NDK
>>> toolchains(android-ndk32-r10b-linux-x86_64 and
>>> android-ndk-r10e-linux-x86_64) and the followings are the configure
>>> and make images command outputs, could you help figure out why the
>>> project can't be built successfully?
>>>
>>>                   In addition, could you tell me how the mobile
>>> project adapts to the bionic C when bionic C lacks some functions
>>> the openjdk needs(such as ucontext.h, getpwuid_r etc.)?
>>>
>>>                   Thanks.
>>>
>>>
>>> android-ndk-r10b
>>> --------------------------------------------------------------------
>>> --
>>> ----
>>> configure:
>>> Configuration summary:
>>> * Debug level:    release
>>> * HS debug level: product
>>> * JDK variant:    normal
>>> * JVM variants:   zero
>>> * OpenJDK target: OS: android, CPU architecture: arm, address length:
>>> 32
>>> * Version string: 9-internal+0-adhoc.zhangfan.mobile-jdk9
>>> (9-internal)
>>>
>>> Tools summary:
>>> * Boot JDK:       java version "1.8.0_192-ea" Java(TM) SE Runtime
>>> Environment (build 1.8.0_192-ea-b04) Java HotSpot(TM) 64-Bit Server
>>> VM (build 25.192-b04, mixed mode)  (at
>>> /home/zhangfan/tools/openjdk-builds/jdk1.8.0_192)
>>> * Toolchain:      gcc (GNU Compiler Collection)
>>> * C Compiler:     Version 4.6 (at
>>> /home/zhangfan/code/dev/jdk9mobile/android-ndk-r10b/generated-toolch
>>> ains/android-arm-toolchain/bin/arm-linux-androideabi-gcc)
>>> * C++ Compiler:   Version 4.6 (at
>>> /home/zhangfan/code/dev/jdk9mobile/android-ndk-r10b/generated-toolch
>>> ains/android-arm-toolchain/bin/arm-linux-androideabi-g++)
>>>
>>> make images:
>>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/
>>> ut
>>> ilities/globalDefinitions_gcc.hpp:79:22: fatal error: ucontext.h: No
>>> such file or directory compilation terminated.
>>>
>>>
>>> android-ndk-r10e
>>> --------------------------------------------------------------------
>>> --
>>> ----
>>> configure:
>>> Configuration summary:
>>> * Debug level:    release
>>> * HS debug level: product
>>> * JDK variant:    normal
>>> * JVM variants:   zero
>>> * OpenJDK target: OS: android, CPU architecture: arm, address length:
>>> 32
>>> * Version string: 9-internal+0-adhoc.zhangfan.mobile-jdk9
>>> (9-internal)
>>>
>>> Tools summary:
>>> * Boot JDK:       java version "1.8.0_192-ea" Java(TM) SE Runtime
>>> Environment (build 1.8.0_192-ea-b04) Java HotSpot(TM) 64-Bit Server
>>> VM (build 25.192-b04, mixed mode)  (at
>>> /home/zhangfan/tools/openjdk-builds/jdk1.8.0_192)
>>> * Toolchain:      gcc (GNU Compiler Collection)
>>> * C Compiler:     Version 4.8 (at
>>> /home/zhangfan/code/dev/jdk9mobile/android-ndk-r10e/generated-toolch
>>> ains/android-arm-toolchain/bin/arm-linux-androideabi-gcc)
>>> * C++ Compiler:   Version 4.8 (at
>>> /home/zhangfan/code/dev/jdk9mobile/android-ndk-r10e/generated-toolch
>>> ains/android-arm-toolchain/bin/arm-linux-androideabi-g++)
>>>
>>> make images:
>>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/os/linux/vm/perfMemory_linux.cpp:
>>> In function 'char* get_user_name(uid_t)':
>>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/os/linux/vm/perfMemory_linux.cpp:458:66:
>>> error: 'getpwuid_r' was not declared in this scope
>>>      int result = getpwuid_r(uid, &pwent, pwbuf, (size_t)bufsize,
>>> &p);
>>>
>>> Best Regards,
>>> Guoge
>>
>