⚠️Untested. Enable semanticdb-scalac in Gradle build.

add-semanticdb-scalac.gradle

apply plugin: 'application'
apply plugin: 'scala'

repositories {
    mavenLocal()
    mavenCentral()
}

ext {
    scalaBinaryVersion = "2.12"
    scalaMinorVersion = "7"
    scalametaVersion = "<update me>"
}

configurations {
    scalaCompilerPlugin
}

dependencies {
    compile("org.scala-lang:scala-library:$scalaBinaryVersion.$scalaMinorVersion")
    // Add semanticdb-scalac compiler plugin
    scalaCompilerPlugin "org.scalameta:semanticdb-scalac_$scalaBinaryVersion.$scalaMinorVersion:$scalametaVersion"
}

compileScala {
    scalaCompileOptions.additionalParameters = ['-Yrangepos'] // required by semanticdb-scalac
}

tasks.withType(ScalaCompile) {
  scalaCompileOptions.additionalParameters = [
    "-Xplugin:" + configurations.scalaCompilerPlugin.asPath
  ]
}