I just ran this with no problems.

git checkout karaf-4.0.7
mvn clean install -DskipTests

mvn -v
Apache Maven 3.2.5 (12a6b3acb947671f09b81f49094c53f426d8cea1; 2014-12-14T18:29:23+01:00)
Maven home: /home/cschneider/java/apache-maven-3.2.5
Java version: 1.8.0_92, vendor: Oracle Corporation
Java home: /home/cschneider/java/jdk1.8.0_92/jre
Default locale: en_US, platform encoding: UTF-8
OS name: "linux", version: "4.8.0-22-generic", arch: "amd64", family: "unix"


So you can experiment with a maven 3.2.
You should also check that you have the jdk not jre and that it is the oracle one.

Christian


On 14.10.2016 14:09, Thomas Termin wrote:
@Jean-Baptiste
mvn clean install -DskipTests results in:

[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 7.785 s
[INFO] Finished at: 2016-10-14T14:06:08+02:00
[INFO] Final Memory: 76M/383M
[INFO] ------------------------------------------------------------------------ [ERROR] Failed to execute goal org.apache.rat:apache-rat-plugin:0.11:check (default) on project karaf: Too many files with unapproved license: 3 See RAT report in: /local/tterm/apache-karaf-4.0.7/target/karaf-4.0.7.rat -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles: [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException

@Christian
Apache Maven 3.3.9

java version "1.7.0_65"
Java(TM) SE Runtime Environment (build 1.7.0_65-b17)
Java HotSpot(TM) Server VM (build 24.65-b04, mixed mode)

and

java version "1.8.0_40"
Java(TM) SE Runtime Environment (build 1.8.0_40-b25)
Java HotSpot(TM) Server VM (build 25.40-b25, mixed mode)

Regards,
Thomas


On Fri, Oct 14, 2016 at 1:53 PM, Christian Schneider <ch...@die-schneider.net <mailto:ch...@die-schneider.net>> wrote:

    What java and maven versions do you use?

    Christian


    On 14.10.2016 13:47, Thomas Termin wrote:

        Hello,

        why is it not possible to build the karaf source code? If I
        download the src for 4.0.7 or checkout the tag and try to
        build karaf with mvn -Pfastinstall I always get the output
        below. It seems that there are missing dependencies on
        apache.commons. What do I wrong?

        Regards,
        Thomas


        [ERROR] Failed to execute goal
        org.apache.maven.plugins:maven-compiler-plugin:3.5.1:compile
        (default-compile) on project karaf-maven-plugin: Compilation
        failure: Compilation failure:
        [ERROR]
        
/local/tterm/apache-karaf-4.0.7/tooling/karaf-maven-plugin/src/main/java/org/apache/karaf/tooling/utils/Dependency30Helper.java:[22,46]
        package org.apache.commons.lang.reflect does not exist
        [ERROR]
        
/local/tterm/apache-karaf-4.0.7/tooling/karaf-maven-plugin/src/main/java/org/apache/karaf/tooling/utils/Dependency30Helper.java:[22,1]
        static import only from classes and interfaces
        [ERROR]
        
/local/tterm/apache-karaf-4.0.7/tooling/karaf-maven-plugin/src/main/java/org/apache/karaf/tooling/utils/Dependency31Helper.java:[50,46]
        package org.apache.commons.lang.reflect does not exist
        [ERROR]
        
/local/tterm/apache-karaf-4.0.7/tooling/karaf-maven-plugin/src/main/java/org/apache/karaf/tooling/utils/Dependency31Helper.java:[50,1]
        static import only from classes and interfaces
        [ERROR]
        
/local/tterm/apache-karaf-4.0.7/tooling/karaf-maven-plugin/src/main/java/org/apache/karaf/tooling/utils/Dependency30Helper.java:[22,46]
        package org.apache.commons.lang.reflect does not exist
        [ERROR]
        
/local/tterm/apache-karaf-4.0.7/tooling/karaf-maven-plugin/src/main/java/org/apache/karaf/tooling/utils/Dependency30Helper.java:[22,1]
        static import only from classes and interfaces
        [ERROR]
        
/local/tterm/apache-karaf-4.0.7/tooling/karaf-maven-plugin/src/main/java/org/apache/karaf/tooling/utils/Dependency31Helper.java:[50,46]
        package org.apache.commons.lang.reflect does not exist
        [ERROR]
        
/local/tterm/apache-karaf-4.0.7/tooling/karaf-maven-plugin/src/main/java/org/apache/karaf/tooling/utils/Dependency31Helper.java:[50,1]
        static import only from classes and interfaces
        [ERROR]
        
/local/tterm/apache-karaf-4.0.7/tooling/karaf-maven-plugin/src/main/java/org/apache/karaf/tooling/utils/Dependency30Helper.java:[95,25]
        cannot find symbol
        [ERROR] symbol:   method
        
invokeMethod(org.apache.maven.project.ProjectBuildingRequest,java.lang.String,org.sonatype.aether.RepositorySystemSession)
        [ERROR] location: class
        org.apache.karaf.tooling.utils.Dependency30Helper
        [ERROR]
        
/local/tterm/apache-karaf-4.0.7/tooling/karaf-maven-plugin/src/main/java/org/apache/karaf/tooling/utils/Dependency31Helper.java:[91,25]
        cannot find symbol
        [ERROR] symbol:   method
        
invokeMethod(org.apache.maven.project.ProjectBuildingRequest,java.lang.String,org.eclipse.aether.RepositorySystemSession)
        [ERROR] location: class
        org.apache.karaf.tooling.utils.Dependency31Helper
        [ERROR] -> [Help 1]
        [ERROR]
        [ERROR] To see the full stack trace of the errors, re-run
        Maven with the -e switch.
        [ERROR] Re-run Maven using the -X switch to enable full debug
        logging.
        [ERROR]
        [ERROR] For more information about the errors and possible
        solutions, please read the following articles:
        [ERROR] [Help 1]
        http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException
        <http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException>
        [ERROR]
        [ERROR] After correcting the problems, you can resume the
        build with the command
        [ERROR]   mvn <goals> -rf :karaf-maven-plugin



-- Christian Schneider
    http://www.liquid-reality.de

    Open Source Architect
    http://www.talend.com




--
Christian Schneider
http://www.liquid-reality.de

Open Source Architect
http://www.talend.com

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