Build
The JaCoCo build is based on Maven and can be locally executed on every machine with a proper environment setup. In particular you need at least Maven 3.3.9 and JDK 8 installations. Developers are encouraged to run the build before every commit to ensure consistency of the source tree.
Running the Build
The build can be started by executing the following command with
./org.jacoco.build/ as the working directory:
mvn clean install
Total build time is typically around 3 minutes, however first build might take more time, because Maven should download plugins and dependencies. The download ZIP will be created at the following location:
./jacoco/target/jacoco-x.y.z.qualifier.zip
Running Quick Build without Tests
It is not recommended, however possible to the run build without any tests:
mvn clean install -DskipTests
Compilation and testing with different JDKs
By default for compilation and execution of tests will be used JDK that runs
Maven. Alternatively you can use JDK from
Maven
Toolchains by setting property jdk.version.
Following table shows how modules will be compiled depending on version of JDK:
| JDK 5 | JDK 6 | JDK 7 | JDK 8 | JDK 9 | JDK 10 | JDK 11 | JDK 12 | |
|---|---|---|---|---|---|---|---|---|
| org.jacoco.core.test.validation.java8 | excluded from build | compiled into bytecode version 52 (Java 8) | ||||||
| org.jacoco.core.test.validation.java7 | excluded from build | compiled into bytecode version 51 (Java 7) | ||||||
| org.jacoco.core.test.validation.groovy | excluded from build | |||||||
| org.jacoco.core.test.validation.kotlin | excluded from build | compiled into bytecode version 50 (Java 6) | compiled into bytecode version 51 (Java 7) | |||||
| all other modules | compiled into bytecode version 49 (Java 5) | compiled into bytecode version 50 (Java 6) | ||||||
Alternatively you can specify bytecode version for all modules using property
bytecode.version.
For example to use JDK 10 from Maven Toolchains and compile all modules into bytecode version 53 (Java 9):
mvn clean install -Djdk.version=10 -Dbytecode.version=9
Also Eclipse Compiler for Java can be used for compilation:
mvn clean install -Decj
Combining these options JaCoCo is regularly tested with the following setups:
mvn clean install -Djdk.version=5 -Dbytecode.version=5mvn clean install -Djdk.version=6 -Dbytecode.version=6mvn clean install -Djdk.version=7 -Dbytecode.version=7mvn clean install -Djdk.version=8 -Dbytecode.version=8mvn clean install -Djdk.version=8 -Dbytecode.version=8 -Decjmvn clean install -Djdk.version=9 -Dbytecode.version=9mvn clean install -Djdk.version=10 -Dbytecode.version=10mvn clean install -Djdk.version=11 -Dbytecode.version=11mvn clean install -Djdk.version=12 -Dbytecode.version=12