Daniel Mensinger created MCOMPILER-538:
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Summary: Do not add target/generated-sources/annotations to the
source roots
Key: MCOMPILER-538
URL: https://issues.apache.org/jira/browse/MCOMPILER-538
Project: Maven Compiler Plugin
Issue Type: Bug
Reporter: Daniel Mensinger
Adding the generated source root ({{target/generated-sources/annotations}}) is
not required for javac. Additionally adding the generated source root results
in compilation errors with annotation processors generating code unless the
generated-sources dir is cleaned.
Specifically, the following steps result in compilation errors:
# run {{mvn clean}}
# Modify a source file that is consumed by the annotation processor so that
there is a compilation error, but the annotation processor still runs (add or
remove a parameter in a method call).
# run {{mvn compile}} --> the generated file exists but there is no class file
for the source file.
# Fix the "bug" from step 2
# run {{mvn compile}} again --> compilation should succeed, but it fails.
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Example code:
[https://github.com/mensinda/quarkus-stuff/tree/annotationProcessingTest]
Use the {{annotationProcessingTest}} branch!
For step 2 this change can be used:
{code:java}
diff --git a/code/src/main/java/bar/MyAnnotatedClass.java
b/code/src/main/java/bar/MyAnnotatedClass.java
index bbfef7a..a303924 100644
--- a/code/src/main/java/bar/MyAnnotatedClass.java
+++ b/code/src/main/java/bar/MyAnnotatedClass.java
@@ -4,7 +4,7 @@ import foo.MyAnnotation;
@MyAnnotation
public class MyAnnotatedClass {
- MyGeneratedClass generatedClass = new MyGeneratedClass();
+ MyGeneratedClass generatedClass = new MyGeneratedClass(false);
// foo
{code}
To see that *not* adding {{target/generated-sources/annotations}} helps run
{{mvn -X compile}} and copy the {{Command line options:}}. Then run {{javac}}
manually, but remove the {{target/generated-sources/annotations}} from the
{{-sourcepath}} list, but *not* the {{-s}} parameter.
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