message: align compilers for MPI build and stan build matters in MPI case during Jenkins build
diff: @@ -94,7 +94,7 @@ pipeline {
  steps {
  setupCC()
  sh "echo > make/local"
  - sh "echo CC=${env.MPICXX} -cxx=${env.CXX} >> make/local"
  + sh "echo CC=${env.MPICXX} >> make/local"
  sh "echo STAN_MPI=true >> make/local"
  sh runTests("./")
  }
  