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androidbuildandroid-sourcejava

How to well manage a build environment for different target?

I'm trying to build different version AOSP and android in ubuntu 14.04. However, I need to switch between different versions of OpenJDK and JAVA SE JDK.

I know I can use update-alternative to deal with different installation. But, JAVA SE JDK doesn't appear in update-alternative. It's just the contents of a tar ball.

Could anyone suggest a better to deal with different tools for building different targets?

Solution

  • You can add your JDK installation into update-alternative manually.

    How you can achieve that:

    • download JDK you need, e.g. jdk-6u45-linux-x64.bin

    • extract it; for example, chmod +x jdk-6u45-linux-x64.bin && ./jdk-6u45-linux-x64.bin

    • move it in the place you want; personally I prefer /opt, so sudo mv jdk1.6.0_45 /opt

    • you can skip this step, but I'd recommend using symbolic links sudo ln -fs /opt/jdk1.6.0_45 /opt/jdk1.6

    • add manually this version sudo update-alternatives --install /usr/bin/java java /opt/jdk1.6/bin/java 1

    Note: I'm using symbolic links there.

    Then you can always change current JDK with

    sudo update-alternatives --config java.

    And then you can check current version of Java being used in the system.

    >java - version
java version "1.6.0_45"
Java(TM) SE Runtime Environment (build 1.6.0_45-b06)
Java HotSpot(TM) 64-Bit Server VM (build 20.45-b01, mixed mode)

    More information you can find in manual page of update-alternatives.