[OE-core] [PATCH] cml1: correct diffconfig output format

[Stefan Müller-Klieser]

If used with some packages using kconfig mechanism, the diffconfig
command generates wrong output format. Diff provides all options to
format the output correctly. This method formats as intended, is more
robust and works with the merge_config.h script from yocto-kernel-tools.

Signed-off-by: Stefan Müller-Klieser <s.mueller-klieser at phytec.de>
---
 meta/classes/cml1.bbclass | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/meta/classes/cml1.bbclass b/meta/classes/cml1.bbclass
index 34c0c4e..0d4b10b 100644
--- a/meta/classes/cml1.bbclass
+++ b/meta/classes/cml1.bbclass
@@ -58,7 +58,7 @@ python do_diffconfig() {
         bb.fatal("No config files found. Did you do menuconfig ?\n%s" % e)
 
     if isdiff:
-        statement = 'diff -Nurp ' + configorig + ' ' + config + '| sed -n "s/^\+//p" >' + fragment
+        statement = 'diff --unchanged-line-format= --old-line-format= --new-line-format="%L"' + configorig + ' ' + config + '>' + fragment
         subprocess.call(statement, shell=True)
 
         shutil.copy(configorig, config)
-- 
1.9.1