How can I configure sourceCompatibility and compilerArgs for all modules, java, android application and android library?

I want to see lint errors in the console and I want to configure to use java 7 just once instead of every module (we have 12 modules).

I put this into my root build.gradle:

allprojects {
    tasks.withType(JavaCompile) {
        options.compilerArgs << "-Xlint:deprecation,unchecked"
        sourceCompatibility = 1.7
        targetCompatibility = 1.7
    }
}

and it does work for pure java projects (apply plugin: 'java' in its own build.gradle) but not for com.android.application and com.android.library modules.

I assume there is some more general "filter" than withType(JavaCompile) I would have to use but I can't find it. Gradle scripts are still magic to me. Poking around I tried JavaCompile's super class AbstractCompile but that didn't do the trick.

How can I avoid having to add

android {
    …
    compileOptions {
        targetCompatibility 1.7
        sourceCompatibility 1.7
    }
}

for the Java version and whatever it would take for the compilerArgs to every Android module?

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