1 files changed, 54 insertions, 0 deletions
diff --git a/var/spack/repos/builtin/packages/mpi-serial/package.py b/var/spack/repos/builtin/packages/mpi-serial/package.py
new file mode 100644
index 0000000000..e9e4708ea7
--- /dev/null
+++ b/var/spack/repos/builtin/packages/mpi-serial/package.py
@@ -0,0 +1,54 @@
+# Copyright 2013-2022 Lawrence Livermore National Security, LLC and other
+# Spack Project Developers. See the top-level COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+from spack.package import *
+
+
+class MpiSerial(AutotoolsPackage):
+    """A single processor implementation of the mpi library."""
+
+    homepage = "https://github.com/MCSclimate/mpi-serial"
+    url = "https://github.com/MCSclimate/mpi-serial/archive/refs/tags/MPIserial_2.3.0.tar.gz"
+
+    # notify when the package is updated.
+    maintainers = ["jedwards4b"]
+
+    version("2.3.0", sha256="cc55e6bf0ae5e1d93aafa31ba91bfc13e896642a511c3101695ea05eccf97988")
+
+    variant(
+        "fort-real-size",
+        values=int,
+        default=4,
+        description="Specify the size of Fortran real variables",
+    )
+
+    variant(
+        "fort-double-size",
+        values=int,
+        default=8,
+        description="Specify the size of Fortran double precision variables",
+    )
+
+    patch("install.patch")
+
+    provides("mpi")
+
+    def configure_args(self):
+        args = []
+        realsize = int(self.spec.variants["fort-real-size"].value)
+        if realsize != 4:
+            args.extend(
+                [
+                    "--enable-fort-real={0}".format(realsize),
+                ]
+            )
+        doublesize = int(self.spec.variants["fort-double-size"].value)
+        if doublesize != 8:
+            args.extend(
+                [
+                    "--enable-fort-double={0}".format(doublesize),
+                ]
+            )
+        return args