04/10: gnu: rdma-core: Use the "write" ioctl mode.

[guix-commits]

civodul pushed a commit to branch wip-mpi
in repository guix.

commit fc6a813d3923b15027f9e362db6ef18bc4364e8e
Author: Ludovic Courtès <address@hidden>
Date:   Fri Nov 8 17:52:54 2019 +0100

    gnu: rdma-core: Use the "write" ioctl mode.
    
    * gnu/packages/linux.scm (rdma-core)[arguments]: Add "-DIOCTL_MODE=write"
    to #:configure-flags.
---
 gnu/packages/linux.scm | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/gnu/packages/linux.scm b/gnu/packages/linux.scm
index d27e2e5..50b24f1 100644
--- a/gnu/packages/linux.scm
+++ b/gnu/packages/linux.scm
@@ -4322,7 +4322,14 @@ The package provides additional NTFS tools.")
        ;; to do the same for consistency. They also recommend using the
        ;; "Release" build type.
        #:build-type "Release"
-       #:configure-flags (list "-GNinja")
+       #:configure-flags (list "-GNinja"
+
+                               ;; On some configurations, the
+                               ;; IB_USER_MAD_REGISTER_AGENT ioctl, which is
+                               ;; used by default, would return ENODEV.  To
+                               ;; avoid that, use 'write' instead of ioctls,
+                               ;; as suggested in 'CMakeList.txt'.
+                               "-DIOCTL_MODE=write")
        #:phases
        (modify-phases %standard-phases
          (replace 'build