Pass compilerArgs via command line

[tbroyer]

Pass compilerArgs via command line

[tbroyer]

The compilerArgs parameter doesn't have a property to be set in the POM's <properties> or as a system property from the command line. This is on-purpose.

Currently, you can define "presets" using profiles, possibly appending new arguments using combine.item="append": http://blog.sonatype.com/2011/01/maven-how-to-merging-plugin-configuration-in-complex-projects/

To make it work from the command-line, the plugin would have to parse the property value as a "command line" to split arguments apart (there's CommandLineUtils#translateCommandline from plexus-utils that can help), but that also means there needs to be another property that accepts a command-line as a String, and that raises the question of what to do when both that property and <compilerArgs> are non-empty.

The current design is based on the maven-compiler-plugin, which doesn't allow setting the compiler arguments from the command-line. I'm tempted to close this issue as a wontfix but could possibly accept a pull-request if things are kept simple.

[timeu]

@tbroyer Thanks for the explanation.
I guess the workaround using profiles ist just fine. Are there plans to expose GWT's compiler arguments as properties ?
Maybe it would be worth to update the README.MD to include some documentation of how to add custom compiler arguments to the GWT compiler. I can do a pull-request if you like.

[tbroyer]

The plugin documentation is now published at https://tbroyer.github.io/gwt-maven-plugin/ and I linked to it form the README. I think that's enough, particularly:

• https://tbroyer.github.io/gwt-maven-plugin/compile-mojo.html#compilerArgs
• https://tbroyer.github.io/gwt-maven-plugin/migrating.html