Jenkins: How to use a variable from a pre-build shell in the Maven “Goals and options”

Question

I have a Maven job in Jenkins. Before the actual build step I have an \"Execute shell\" pre-build step. In that shell I set a variable:

REVISION=$(cat .build         


        

Answer 1

I had a very similar problem, trying to compute a build version and inject it into the build. After running into all the same issues (not expanding, etc), I used the "Generate environment variables from script" option, which interprets the output as tag=value pairs into Jenkins variables. The script :

  #generate a version code that is high enough to surpass previously published clients
  val=`expr 150000 + $BUILD_NUMBER`
  echo VERSION_CODE=$val

After this, I was able to inject $VERSION_CODE into maven as follows :

  -Dbuild.vercode=${VERSION_CODE}

Hope that works for you.