Subject: [bug#31999] [PATCH 4/7] gnu: lvm2: Add device-mapper-event support.

From: Pierre Neidhardt <[email-masked]>
Date: Mon, 30 Jul 2018 15:36:40 +0200

* GNU/packages/linux.scm (lvm2)[configure-flags]: Build device-mapper-event.
---
 gnu/packages/linux.scm | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/gnu/packages/linux.scm b/gnu/packages/linux.scm
index 70615df93..e27c9b475 100644
--- a/gnu/packages/linux.scm
+++ b/gnu/packages/linux.scm
@@ -2127,12 +2127,24 @@ time.")
                                "--enable-udev_sync"
                                "--enable-udev_rules"
                                "--enable-pkgconfig"
+                               "--enable-cmdlib"
+                               "--enable-dmeventd" ; Requires '--enable-cmdlib'.
 
                                ;; Make sure programs such as 'dmsetup' can
                                ;; find libdevmapper.so.
                                (string-append "LDFLAGS=-Wl,-rpath="
                                               (assoc-ref %outputs "out")
-                                              "/lib"))
+                                              "/lib,-rpath="
+                                              (assoc-ref %outputs "out")
+                                              "/lib/device-mapper")
+                               ;; TODO: Patch make.tmpl.in to take LDFLAGS
+                               ;; into account so that we don't need to also
+                               ;; set CLDFLAGS.
+                               (string-append "CLDFLAGS=-Wl,-rpath="
+                                              (assoc-ref %outputs "out")
+                                              "/lib,-rpath="
+                                              (assoc-ref %outputs "out")
+                                              "/lib/device-mapper"))
 
        ;; The tests use 'mknod', which requires root access.
        #:tests? #f))
-- 
2.18.0