Specifying Scalac Compile-Time Option with maven-scala-plugin - scala

Question

Using the maven-scala-plugin 2.15.2, I'm trying to specify the max length of a Scala Class File to "50" characters. I tried 2 places in my pom.xml:
<build>
<plugins>
<plugin>
<groupId>org.scala-tools</groupId>
<artifactId>maven-scala-plugin</artifactId>
<version>2.15.2</version>
<executions>
<execution>
<id>scala-compile-first</id>
<goals>
<goal>compile</goal>
</goals>
<phase>process-resources</phase>
<configuration>
<scalacArgs> <-- Attempt #1 -->
<scalacArg>-Xmax-classfile-name 50</scalacArg>
</scalacArgs>
<scalaVersion>${scalaVer}</scalaVersion>
<args>
<arg>-make:transitive</arg>
<arg>-dependencyfile</arg>
<arg>${project.build.directory}/.scala_dependencies</arg>
<!-- Attempt #2 -->
</args>
</configuration>
I also ran mvn compile -Xmax-classfile-name 50, but Maven did not recognize the option and failed.
Where can I specify this option using the maven-scala-plugin?

Answer 1

Where you are using args inside configuration should be where you put your compiler args. You seem to have also created scalacArgs, but the args are passed to scalac.
I use this in my plugin to pass options to the compiler:
<configuration>
<args>
<arg>-g:vars</arg>
<arg>-Yrangepos</arg>
<arg>-P:scoverage:dataDir:${coverage.data.dir}</arg>
<arg>-Xmax-classfile-name</arg>
<arg>70</arg>
</args>
<jvmArgs>
<jvmArg>-Xms64m</jvmArg>
<jvmArg>-Xmx1024m</jvmArg>
</jvmArgs>
<compilerPlugins>
<compilerPlugin>
<groupId>org.scoverage</groupId>
<artifactId>scalac-scoverage-plugin_${scala.major}</artifactId>
<version>${scoverage-plugin.version}</version>
</compilerPlugin>
</compilerPlugins>
</configuration>
http://scala-tools.org/mvnsites/maven-scala-plugin/example_compile.html#Compiler_Arguments