From 8ba94edd8f411d68338d6d063dc09cda6858b748 Mon Sep 17 00:00:00 2001
From: Ludovic Courtès <ludo@gnu.org>
Date: Tue, 15 Oct 2019 13:56:06 +0200
Subject: gnu: openmpi: Add dependency on UCX when supported.

* gnu/packages/mpi.scm (openmpi)[inputs]: Add UCX conditionally.
---
 gnu/packages/mpi.scm | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'gnu/packages/mpi.scm')

diff --git a/gnu/packages/mpi.scm b/gnu/packages/mpi.scm
index 079ac34dbf..914f8e975e 100644
--- a/gnu/packages/mpi.scm
+++ b/gnu/packages/mpi.scm
@@ -185,6 +185,10 @@ (define-public openmpi
                   (member (%current-system) (package-supported-systems psm2)))
              `(("psm2" ,psm2))
              '())
+       ,@(if (and (not (%current-target-system))
+                  (member (%current-system) (package-supported-systems psm2)))
+             `(("ucx" ,ucx))
+             '())
        ("rdma-core" ,rdma-core)
        ("valgrind" ,valgrind)
        ("slurm" ,slurm)))              ;for PMI support (launching via "srun")
-- 
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