Hi,
I've been able to locally *package* a subset of the MavenModules enriched
with module-info.
mvn package -pl :maven-settings-builder -am -Denforcer.skip
resulting in:
[INFO] Reactor Summary:
[INFO]
[INFO] Apache Maven ...................................... SUCCESS
[57.217s]
[INFO] Maven Builder Support ............................. SUCCESS
[1:12.072s]
[INFO] Maven Settings .................................... SUCCESS
[10.900s]
[INFO] Maven Settings Builder ............................ SUCCESS
[29.223s]
[INFO]
------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO]
------------------------------------------------------------------------
Skipping enforcer is required because the bytecode signature for java9
isn't recognized yet.
The reason I use 'package' is because it'll use the created jars of every
maven module. These jars I can copy to a specific folder ( e.g.
target/libs ), so I can use as compiler argument '-modulepath target/libs'.
And this works, including executing surefire without patching!
I haven't used the -modulesourcepath, because that would include the
module-name in the outputdirectory, resulting in something like
target/classes/maven.setting.builder/org/apache/maven/setting/building/SettingsBuilder.class
Every plugin using classpath would fail.
However, to be able to run 'mvn compile', according to the specs[1] in
case of exploded directory, such directory must start with the module
name, hence I should start using -modulesourcepath
I was hoping that we only had to patch the plugins, but it seems like we
need to change MavenProject as well to separate classpath from modulepath
since you need them both.
IMHO if we try to abuse classpath for modulepaths we'll have to do a lot
of tricks and magic to always get the right values, which is doomed for
failure.
Maybe now that we can specify the builder via commandline there could be
an easy way to extend MavenProject, I'm just not if that's something worth
trying.
I'm also wondering how IDEs think this should be solved.
So the question is: can this only be solved with a new version of Maven or
does somebody has a proposal to fix this on a plugin-level?
thanks,
Robert
[1] http://openjdk.java.net/jeps/261
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