I have a Gradle-managed multi-project setup that relies on the new Java 8 -parameters compiler flag. I need 2 ways of including the compiler flag:
I've tried this:
tasks.withType(JavaCompile) {
options.compilerArgs << '-parameters'
options.fork = true
options.forkOptions.executable = 'javac'
}
...but it does not seem to be working properly.
You should use standard way of configuring Java compile plugin:
apply plugin: 'java'
compileJava {
options.compilerArgs << '-parameters'
}
sourceSets, etc. (compileJava affect only main sourceSet). The "accepted" answer is nothing of that, the answer below is much much much better. @JustACluelessNewbie reconsider. ) Gradle experts make some up/down votes. Sorry for criticising comment. )
-parameters they're referencing Spring, Dagger or a release version instead?For Android projects, one can add e.g. the below in the gradle android scope.
// Used to get more info from dagger regarding binding compile errors
// see https://github.com/google/dagger/wiki/Dagger-2.17-@Binds-bugs
tasks.withType(JavaCompile) {
options.compilerArgs += ["-Adagger.floatingBindsMethods=enabled"]
}
I had to add support for parameters in a kotlin project. The way to do it was to set the javaParameters kotlin option
kotlinOptions {
jvmTarget = JavaVersion.VERSION_11.toString()
javaParameters = true
}
tasks.compileKotlin { kotlinOptions { javaParameters = true } }
When using a Kotlin config file for a Java project, with a build.gradle.kts file, the above suggestions did not work. This did:
tasks.withType<JavaCompile> {
// Support Beam's @JavaBeanSchema with @SchemaCreate all-args constructors
options.compilerArgs.add("-parameters")
}
Answer from @Crazyjavahacking is correct
Also, check that you doesn't redifine it, like me, in a subproject that uses others args (mapstruct in my case) :
options.compilerArgs = ['-Amapstruct.defaultComponentModel=spring'] // do not do this
Always append the args options.compilerArgs << '-Amapstruct.defaultComponentModel=spring'
Hope it can save some time to someone else, i personnaly lost 2 hours since i totally forgot this line in the subproject and was concentrating on the main build.gradle
compileJava {
options.compilerArgs.addAll(['--release', javaVersion])
}
