Roman Kozlov created MCOMPILER-474:
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Summary: Dependent modules are not recompiled if we run the
"package" goal
Key: MCOMPILER-474
URL: https://issues.apache.org/jira/browse/MCOMPILER-474
Project: Maven Compiler Plugin
Issue Type: Bug
Affects Versions: 3.8.1
Reporter: Roman Kozlov
Suppose we have a project with two modules: "Lib" and "App", App depends on
Lib. And we ran {{mvn clean install}} earlier. Then we changed something in Lib
sources. Now consider these two scenarios:
# If we run {{mvn compile}}: Lib gets recompiled, then App gets recompiled -
all good.
# If we run {{mvn package}}: Lib gets recompiled, but App doesn't ("Nothing to
compile - all classes are up to date") - a bug.
The problem here is that if the current build requests packaging a jar then Lib
is added to App's {{compilePath}} as {{.../lib/target/lib-x.y.z.jar}} (instead
of {{.../lib/target/classes}} in case of "compile" goal). And the staleness
logic in AbstractCompilerMojo only checks class files, not jars.
This can be reproduced using the existing integration test
https://github.com/apache/maven-compiler-plugin/tree/master/src/it/MCOMPILER-349_dependencyChanged,
you'll just need to replace "compile" with "package" in the invoker.properties
file.
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