[PATCH 2/5] kbuild: fix warning when domainname is not available

[Felipe Contreras <felipe.contreras@gmail.com>]

Otherwise we get:
"dnsdomainname: Unknown host"

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
---
 scripts/mkcompile_h |    8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/scripts/mkcompile_h b/scripts/mkcompile_h
index 6a12dd9..2e09f4a 100755
--- a/scripts/mkcompile_h
+++ b/scripts/mkcompile_h
@@ -66,9 +66,13 @@ UTS_TRUNCATE="sed -e s/\(.\{1,$UTS_LEN\}\).*/\1/"
   echo \#define LINUX_COMPILE_HOST \"`hostname | $UTS_TRUNCATE`\"
 
   if [ -x /bin/dnsdomainname ]; then
-    echo \#define LINUX_COMPILE_DOMAIN \"`dnsdomainname | $UTS_TRUNCATE`\"
+    domain=`dnsdomainname 2> /dev/null`
   elif [ -x /bin/domainname ]; then
-    echo \#define LINUX_COMPILE_DOMAIN \"`domainname | $UTS_TRUNCATE`\"
+    domain=`domainname 2> /dev/null`
+  fi
+
+  if $domain; then
+    echo \#define LINUX_COMPILE_DOMAIN \"`echo $domain | $UTS_TRUNCATE`\"
   else
     echo \#define LINUX_COMPILE_DOMAIN
   fi
-- 
1.6.5.rc1