How to setup CircleCI environment JAVA7_HOME, JAVA6_HOME for RetroLambda

Standard

Using retrolambda in Android application being built using circleci as continuous integration cause some issues:

> Building 10%When running gradle with java 8, you must set the path to the old jdk, either with property retrolambda.oldJdk or environment variable JAVA5_HOME/JAVA6_HOME/JAVA7_HOME

The problem is you have to configure environment variables for Java_Home, Java7_Home, Java6_Home and etc in circleci virtual machine.

this circle.yml file could help you in this regard:

#
# Build configuration for Circle CI
#

general:
    artifacts:
        - /home/ubuntu/weather_app/app/build/outputs/apk/
        - /usr/lib/jvm/

machine:
    environment:
        ANDROID_HOME: /usr/local/android-sdk-linux
        JAVA6_HOME: /usr/lib/jvm/java-6-openjdk-amd64

    java:
      version: openjdk8

dependencies:
    override:
        - echo y | sudo apt-get update
        - echo y | sudo apt-get install libpango-1.0-0
        - echo y | sudo apt-get install openjdk-6-jre

        - echo y | android update sdk --no-ui --all --filter tools,platform-tools,build-tools-23.0.3,android-23,extra-google-m2repository,extra-google-google_play_services,extra-android-support
        - ANDROID_HOME=/usr/local/android-sdk-linux ./gradlew dependencies

test:
    override:
        - (./gradlew assemble):
            timeout: 360

        - (./gradlew test):
            timeout: 360

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