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https://jira.codehaus.org/browse/MCOMPILER-205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=326507#comment-326507
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SebbASF commented on MCOMPILER-205:
-----------------------------------
I'd forgotten about annotations.
Ordinary Java source files may depend on each other, and therefore multiple
files may need to be compiled if one source file changes.
Is that true of package-info files, or are they independent?
If so, there is no need to recompile anything else if one is found to be out of
date, only the p-i file itself.
This would reduce the recompilation needed.
Ideally the package-info files would not be recompiled either if they won't
generate class files, but that may be much harder to detect.
Undesirable workrounds include: don't use p-i files; ensure every p-i file
contains a package annotation.
> maven-compiler-plugin: incremental compilation broken
> -----------------------------------------------------
>
> Key: MCOMPILER-205
> URL: https://jira.codehaus.org/browse/MCOMPILER-205
> Project: Maven 2.x Compiler Plugin
> Issue Type: Bug
> Affects Versions: 3.1
> Reporter: Lukas Fryc
> Attachments: hello.tgz, no-class-in-java-file.zip
>
>
> When we do {{clean}} -> {{compile}} -> {{compile}}, all Java sources are
> re-compiled for second compilation steps:
> {code}
> [framework]$ mvn clean
> ...
> [framework]$ mvn compile
> ...
> [INFO] --- maven-compiler-plugin:3.1:compile (precompile-sources-for-cdk) @
> richfaces-framework ---
> [INFO] Changes detected - recompiling the module!
> [INFO] Compiling 915 source files to
> /mnt/workspace/workspaces/richfaces/richfaces5/framework/target/classes
> ...
> [framework]$ mvn compile
> ...
> [INFO] --- maven-compiler-plugin:3.1:compile (precompile-sources-for-cdk) @
> richfaces-framework ---
> [INFO] Changes detected - recompiling the module!
> [INFO] Compiling 915 source files to
> /mnt/workspace/workspaces/richfaces/richfaces5/framework/target/classes
> ...
> {code}
> The source code of the affected project:
> https://github.com/richfaces/richfaces5/tree/077dcfc0a46d03d7ba9a7ac3e701a4adfb834c71
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