[PATCH v2] dpkg-raw: empty "Depends:" line is not allowed in .deb

[Henning Schild <henning.schild@siemens.com>]

Apt-gat fails to install packages if the control-file contains a
"Depends:"-line without any packages listed.

  E: Problem parsing dependency Depends

So append that line to the control-file only if DEBIAN_DEPENDS was set
in the recipe. The user could still specify i.e. " " or anything
invalid, we do not check that. But now our default works.

Signed-off-by: Henning Schild <henning.schild@siemens.com>
Reported-by: Claudius Heine <ch@denx.de>
---
 meta/classes/dpkg-raw.bbclass | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/meta/classes/dpkg-raw.bbclass b/meta/classes/dpkg-raw.bbclass
index af62be4..ecd5c7f 100644
--- a/meta/classes/dpkg-raw.bbclass
+++ b/meta/classes/dpkg-raw.bbclass
@@ -26,10 +26,15 @@ do_deb_package_prepare() {
 		Section: misc
 		Priority: optional
 		Maintainer: ${MAINTAINER}
-		Depends: `echo ${DEBIAN_DEPENDS} | tr '[:blank:]' ','`
 		Version: ${PV}+isar
 		Description: ${DESCRIPTION}
 	__EOF__
+	if [ "${DEBIAN_DEPENDS}" != "" ]
+	then
+		echo -n Depends: >> ${D}/DEBIAN/control
+		echo ${DEBIAN_DEPENDS} | tr '[:blank:]' ',' >> \
+			${D}/DEBIAN/control
+	fi
 	for t in pre post
 	do
 		for a in inst rm
-- 
2.13.6