Dear Community,
I tried to build openhab2-addons directory by using “mvn clean install -e -X” and got an error on the first possibility, see attached file. What went wrong?
Best regards,
Jochen
Looks like you’ve typed “lean” instead of “clean”?
Oh dear - it is late, indeed it’s been a typo.
It fails to download because it cannot connect to https://jcenter.bintray.com. Is your DNS working properly and can you open it in your browser? Maybe you have a firewall or antivirus solution that is blocking Java from accessing the Internet?
Thanks - now I was able to run the addons build successfully until the transformation service. That took almost 6 hours (called “mvn clean install -e -X”)! Fur further information see my picture below, it seems one of the tests was broken.
There is some progress here! 
The first build might take a while because it will download a lot of dependencies from the Internet. After that most of them will be cached in your local Maven repository ~/.m2/repository
I rarely build using -e -X because it will generate a lot of debug logging that further slows down the build.
It’s a known issue on Windows that those MapTransformationServiceTest fail see openhab2-addons#5854. A workaround might be to skip test execution with a full build by adding the following build option -DskipTests=true
To furthermore speed up your build you can disable static analysis by adding -DskipChecks see also the Developer docs.
Usually I add both options on full builds and omit them when building individual projects to have in depth reporting/testing. Only when I do something else I run full builds with all checks and tests. That’s Jenkins job. 
Build successful (in 30 minutes …): “mvn clean install -DskipTests=true -DskipChecks=true”
2 Likes
The failing MapTransformationServiceTest on Windows should be fixed soon!
Could you please tell me what the result is for the build? Is a kar file or what?