Building CorDapps against a non-release branch

You should generally develop CorDapps against the most recent Corda stable release. However, you may need to build a CorDapp against an unstable non-release branch if your CorDapp uses a very recent feature, or you are using the CorDapp to test a PR on the main codebase.

To work against a non-release branch:

1. Clone the Corda repository.
2. Check out the branch or commit of the Corda repository you want to work against.
3. Make a note of the gradlePluginsVersion in the root constants.properties file of the Corda repository.
4. Clone the Corda Gradle Plugins repository.
5. Check out the tag of the Corda Gradle Plugins repository corresponding to the gradlePluginsVersion.
6. Follow the instructions in the README of the Corda Gradle Plugins repository to install the correct version of the Corda Gradle plugins locally.
7. Open a terminal window in the folder where you cloned the Corda repository.
8. Publish Corda to your local Maven repository using the following commands:

• Unix/macOS: ./gradlew install
• Windows: gradlew.bat install

9. Make a note of the corda_release_version in the root build.gradle file of the Corda repository.
10. In your CorDapp’s root build.gradle file:
11. Update ext.corda_release_version to the corda_release_version you noted earlier.
12. Update corda_gradle_plugins_version to the gradlePluginsVersion you noted earlier - for Corda Enterprise Edition 4.9, this must be ext.corda_gradle_plugins_version = '5.0.12'.