[OE-core] [PATCH v2] cml1.bbclass: fix undefined behavior

[Stefan Müller-Klieser]

Whenever cml1 do_configure is used with a defconfig, oldconfig waits for
input. This silently fails on recent kconfig projects with:
"Error in reading or end of file."
We cannot use a more up to date kconfig target such as olddefconfig,
because busybox does not support it.

Signed-off-by: Stefan Müller-Klieser <s.mueller-klieser at phytec.de>
---
v2:
 - switch to good old yes '' | to support busybox
 - adapt commit message

 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 98d24cec746b..c7f6723cb3de 100644
--- a/meta/classes/cml1.bbclass
+++ b/meta/classes/cml1.bbclass
@@ -1,7 +1,7 @@
 cml1_do_configure() {
 	set -e
 	unset CFLAGS CPPFLAGS CXXFLAGS LDFLAGS
-	oe_runmake oldconfig
+	yes '' | oe_runmake oldconfig
 }
 
 EXPORT_FUNCTIONS do_configure
-- 
2.20.1