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BUILDING.md

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Building Retrolambda

Set the following environment variables to point to the installation directories of those particular JDK versions: JAVA8_HOME, JAVA7_HOME, JAVA6_HOME, JAVA5_HOME

Create ~/.m2/toolchains.xml and list all the JDKs there as shown in http://maven.apache.org/plugins/maven-toolchains-plugin/toolchains/jdk.html

Compile the project with Maven using the command:

mvn clean verify

To run the tests using Java 6 and Java 5, use the commands:

mvn clean verify -P java6
mvn clean verify -P java5

To run all combinations of test configurations, use the script:

./scripts/build.sh

Finally copy the executable JAR from the retrolambda/target/ directory.

Using the Docker-based Development Environment

To avoid having to install all the Java versions on your computer, there is a Docker image for building Retrolambda.

The image is already in Docker Hub, but it can also be built locally with:

make

To run a shell inside the container:

make shell