[libvirt] [PATCH] build: fix cygwin build in virnetdev

[Eric Blake]

On cygwin, compilation failed because SIOCSIFHWADDR is undefined.

* src/util/virnetdev.c (virNetDevSetMAC): Cygwin can query but not
set mac address.

Signed-off-by: Eric Blake <eblake at redhat.com>
---

Pushing under the build-breaker rule.  I may have a few more
cygwin-related patches as I continue to try and build there, but
figured it's better to send things as individual patches instead
of squashing unrelated fixes in one go.

 src/util/virnetdev.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/util/virnetdev.c b/src/util/virnetdev.c
index 0a3e17d..8013f23 100644
--- a/src/util/virnetdev.c
+++ b/src/util/virnetdev.c
@@ -132,7 +132,8 @@ int virNetDevExists(const char *ifname)
 #endif


-#if defined(SIOCGIFHWADDR) && defined(HAVE_STRUCT_IFREQ)
+#if defined(SIOCGIFHWADDR) && defined(SIOCSIFHWADDR) && \
+    defined(HAVE_STRUCT_IFREQ)
 /**
  * virNetDevSetMAC:
  * @ifname: interface name to set MTU for
-- 
1.8.1.4