#1 [MVN] 'build.plugins.plugin.version' for org.apache.maven.plugins:maven-compiler-plugin is missing

[Benjamin de Dardel]

[WARNING]
[WARNING] Some problems were encountered while building the effective model for net.sourceforge.ant4x:ant4x:jar:0.5-SNAPSHOT
[WARNING] 'build.plugins.plugin.version' for org.apache.maven.plugins:maven-compiler-plugin is missing. @ line 260, column 12
[WARNING] 'build.plugins.plugin.version' for org.codehaus.mojo:build-helper-maven-plugin is missing. @ line 241, column 12
[WARNING] 'build.plugins.plugin.version' for org.apache.maven.plugins:maven-jar-plugin is missing. @ line 288, column 12
[WARNING]
[WARNING] It is highly recommended to fix these problems because they threaten the stability of your build.
[WARNING]
[WARNING] For this reason, future Maven versions might no longer support building such malformed projects.
[WARNING]