Merge pull request #4179 from martin-frbg/jenkinsfix

Run "make clean" on Jenkins first to remove stale objects

Jenkinsfile

@@ -7,7 +7,7 @@ pipeline {
     stages {
         stage('Build') {
             steps {
-                sh 'make'
+                sh 'make clean && make'
             }
         }
     }

Jenkinsfile.pwr

@@ -9,7 +9,7 @@ pipeline {
             steps {
                 sh 'sudo apt update'
                 sh 'sudo apt install gfortran -y'
-                sh 'make'
+                sh 'make clean && make'
             }
         }
     }