Thank you Ullrich and all. I was able to import and build jenkins as follows:
1) git clone https://github.com/jenkinsci/jenkins.git 2) cd jenkins; mvn install -DskipTests 3) Started inlellij, imported and built the projects, no errors just tons of warnings. I now want to debug the jenkins.war. I created a debug configuration following https://stackoverflow.com/questions/21114066/attach-intellij-idea-debugger-to-a-running-java-process . Then I started the application using the command: mvnDebug jenkins-dev:run and connected from intellij, I saw a bunch of info in the terminal windows where I ran mvnDebug and finally the error: mvnDebug jenkins-dev:run Preparing to execute Maven in debug mode Listening for transport dt_socket at address: 8000 [INFO] Scanning for projects... [WARNING] The POM for org.apache.maven.plugins:maven-checkstyle-plugin:jar:3.0 is missing, no dependency information available [WARNING] Failed to retrieve plugin descriptor for org.apache.maven.plugins:maven-checkstyle-plugin:3.0: Plugin org.apache.maven.plugins:maven-checkstyle-plugin:3.0 or one of its dependencies could not be resolved: Failure to find org.apache.maven.plugins:maven-checkstyle-plugin:jar:3.0 in http://repo.jenkins-ci.org/public/ was cached in the local repository, resolution will not be reattempted until the update interval of repo.jenkins-ci.org has elapsed or updates are forced [WARNING] The POM for org.eclipse.m2e:lifecycle-mapping:jar:1.0.0 is missing, no dependency information available [WARNING] Failed to retrieve plugin descriptor for org.eclipse.m2e:lifecycle-mapping:1.0.0: Plugin org.eclipse.m2e:lifecycle-mapping:1.0.0 or one of its dependencies could not be resolved: Failure to find org.eclipse.m2e:lifecycle-mapping:jar:1.0.0 in http://repo.jenkins-ci.org/public/ was cached in the local repository, resolution will not be reattempted until the update interval of repo.jenkins-ci.org has elapsed or updates are forced Downloading from repo.jenkins-ci.org: http://repo.jenkins-ci.org/public/org/apache/maven/plugins/maven-metadata.xml Downloading from central: https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-metadata.xml Downloading from central: https://repo.maven.apache.org/maven2/org/codehaus/mojo/maven-metadata.xml Downloading from repo.jenkins-ci.org: http://repo.jenkins-ci.org/public/org/codehaus/mojo/maven-metadata.xml Downloaded from repo.jenkins-ci.org: http://repo.jenkins-ci.org/public/org/apache/maven/plugins/maven-metadata.xml (9.9 kB at 15 kB/s) Downloaded from repo.jenkins-ci.org: http://repo.jenkins-ci.org/public/org/codehaus/mojo/maven-metadata.xml (20 kB at 30 kB/s) Downloaded from central: https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-metadata.xml (14 kB at 19 kB/s) Downloaded from central: https://repo.maven.apache.org/maven2/org/codehaus/mojo/maven-metadata.xml (20 kB at 28 kB/s) [INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 2.402 s [INFO] Finished at: 2019-01-03T16:34:25-08:00 [INFO] ------------------------------------------------------------------------ [ERROR] No plugin found for prefix 'jenkins-dev' in the current project and in the plugin groups [org.apache.maven.plugins, org.codehaus.mojo] available from the repositories [local (/home/gerry/.m2/repository), repo.jenkins-ci.org (http://repo.jenkins-ci.org/public/), central ( https://repo.maven.apache.org/maven2)] -> [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/NoPluginFoundForPrefixException On Thu, Jan 3, 2019 at 3:23 PM Ullrich Hafner <[email protected]> wrote: > Building is quite easy:-) Just importing it into an IDE is complex since > Jenkins uses a lot of hacks around the maven infrastructure so it does not > work out of the box. > > E.g., the compile error in IntelliJ is due to missing generated resource > files. These generated sources are not picked up automatically. You need to > make sure that the folder target/generated-sources/localizer is recognized > as source folder. > > Am 03.01.2019 um 21:19 schrieb Gerry Storm <[email protected]>: > > I'm a bit surprised. jenkins is widely used and it looks looks like there > are tons of contributors. I assumed it would be a breeze to build it from > the source. I wonder if this is just my bad luck? > > On Thu, Jan 3, 2019 at 12:08 PM Gerry Storm <[email protected]> wrote: > >> I have tried inlelliji and still got one error when building projects: >> Error:(26, 25) java: package hudson.cli.client does not exist >> >> in cli/src/main/java/hudson/cli/CLI.java at "import >> hudson.cli.client.Messages;" >> >> >> >> On Thu, Jan 3, 2019 at 8:56 AM Jan Monterrubio <[email protected]> >> wrote: >> >>> I personally use intellij idea, since it lets you import a project ( and >>> if it is maven it will wire things up on its own). >>> >>> https://blog.jetbrains.com/idea/2008/03/opening-maven-projects-is-easy-as-pie/ >>> >>> >>> On Thu, Jan 3, 2019 at 10:55 AM Gerry Storm <[email protected]> >>> wrote: >>> >>>> Thank you all very much. I am not particularly fond of Eclipse per se. >>>> I have used it in the past and it was my first choice. If you think Apache >>>> NetBeans or IntelliJ IDEA are better I will switch to one of those. Which >>>> one would you recommend and are there instructions available I could >>>> follow? >>>> >>>> >>>> On Thu, Jan 3, 2019 at 5:17 AM Steffen Elste <[email protected]> >>>> wrote: >>>> >>>>> Hi, >>>>> after i modified the pom.xml of the *cli* project to include >>>>> >>>>> <plugin> >>>>> <groupId>org.codehaus.mojo</groupId> >>>>> <artifactId>build-helper-maven-plugin</artifactId> >>>>> <version>3.0.0</version> >>>>> <executions> >>>>> <execution> >>>>> <id>add-source</id> >>>>> <phase>generate-sources</phase> >>>>> <goals> >>>>> <goal>add-source</goal> >>>>> </goals> >>>>> <configuration> >>>>> <sources> >>>>> >>>>> <source>${project.build.directory}/generated-sources/localizer</source> >>>>> </sources> >>>>> </configuration> >>>>> </execution> >>>>> </executions> >>>>> </plugin> >>>>> >>>>> >>>>> and re-imported everything the build path is set up correctly. >>>>> Cheers, >>>>> >>>>> Steffen >>>>> >>>>> -- >>>>> You received this message because you are subscribed to the Google >>>>> Groups "Jenkins Users" group. >>>>> To unsubscribe from this group and stop receiving emails from it, send >>>>> an email to [email protected]. >>>>> To view this discussion on the web visit >>>>> https://groups.google.com/d/msgid/jenkinsci-users/46b79a6d-78d1-48f5-b1dd-8798eb82a9bc%40googlegroups.com >>>>> <https://groups.google.com/d/msgid/jenkinsci-users/46b79a6d-78d1-48f5-b1dd-8798eb82a9bc%40googlegroups.com?utm_medium=email&utm_source=footer> >>>>> . >>>>> For more options, visit https://groups.google.com/d/optout. >>>>> >>>> >>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "Jenkins Users" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to [email protected]. >>>> To view this discussion on the web visit >>>> https://groups.google.com/d/msgid/jenkinsci-users/CA%2BQZycn1-AO%2BrC5KhRi_QJwfJtxXzZdjrvs9-9kcjf5p2rjbNw%40mail.gmail.com >>>> <https://groups.google.com/d/msgid/jenkinsci-users/CA%2BQZycn1-AO%2BrC5KhRi_QJwfJtxXzZdjrvs9-9kcjf5p2rjbNw%40mail.gmail.com?utm_medium=email&utm_source=footer> >>>> . >>>> For more options, visit https://groups.google.com/d/optout. >>>> >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "Jenkins Users" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/jenkinsci-users/CADgiF9LAebb%2B-0tXsf2Vx5uCeKO0c7Rj4Ze8-uNiZCGpDtoS0A%40mail.gmail.com >>> <https://groups.google.com/d/msgid/jenkinsci-users/CADgiF9LAebb%2B-0tXsf2Vx5uCeKO0c7Rj4Ze8-uNiZCGpDtoS0A%40mail.gmail.com?utm_medium=email&utm_source=footer> >>> . >>> For more options, visit https://groups.google.com/d/optout. >>> >> > -- > You received this message because you are subscribed to the Google Groups > "Jenkins Users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/jenkinsci-users/CA%2BQZyc%3DOS1WdsNQS-fScq0ukj0r-dfSWSoO3%2BBG1T92aCChKRw%40mail.gmail.com > <https://groups.google.com/d/msgid/jenkinsci-users/CA%2BQZyc%3DOS1WdsNQS-fScq0ukj0r-dfSWSoO3%2BBG1T92aCChKRw%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > > > -- > You received this message because you are subscribed to the Google Groups > "Jenkins Users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/jenkinsci-users/0BCF8480-4FE1-49E1-8B5D-138E2CB8EE0D%40gmail.com > <https://groups.google.com/d/msgid/jenkinsci-users/0BCF8480-4FE1-49E1-8B5D-138E2CB8EE0D%40gmail.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "Jenkins Users" group. 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