Add MPI support and tags to embs package (#4824)

var/spack/repos/builtin/packages/ebms/package.py

@@ -33,14 +33,37 @@ class Ebms(MakefilePackage):
        described in [1], where only one process in a compute node
        is used, and the compute nodes are divided into memory nodes
        and tracking nodes.    Memory nodes do not participate in particle
-       tracking. Obviously, there is a lot of resource waste in this design."""
+       tracking. Obviously, there is a lot of resource waste in this design.
+    """
 
     homepage = "https://github.com/ANL-CESAR/EBMS"
     url = "https://github.com/ANL-CESAR/EBMS/archive/master.tar.gz"
 
     version('develop', git='https://github.com/ANL-CESAR/EBMS.git')
 
+    variant('mpi', default=True, description='Build with MPI support')
+
+    depends_on('mpi', when='+mpi')
+
+    tags = ['proxy-app']
+
+    @property
+    def build_targets(self):
+
+        targets = []
+
+        cflags = '-g -O3 -std=gnu99'
+
+        if '+mpi' in self.spec:
+            targets.append('CC={0}'.format(self.spec['mpi'].mpicc))
+
+        targets.append('CFLAGS={0}'.format(cflags))
+
+        return targets
+
     def install(self, spec, prefix):
         mkdir(prefix.bin)
         install('ebmc-iallgather', prefix.bin)
         install('ebmc-rget', prefix.bin)
+        install_tree('run', join_path(prefix, 'run'))
+        install_tree('inputs', join_path(prefix, 'inputs'))