bitbake: depexp.py: Fix segfault if DISPLAY is not set

bitbake -g -u depexp <package> segfaults when DISPLAY is not set
properly. Fix it with a proper check.

[YOCTO #7299]

(Bitbake rev: f35e9bd7b59c180fe9a3d9177efb57b92d9cd373)

Signed-off-by: Maxin B. John <maxin.john@enea.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 7 insertions, 0 deletions

diff --git a/bitbake/lib/bb/ui/depexp.py b/bitbake/lib/bb/ui/depexp.py
index 0c71a3ebd2..240aafc3e7 100644
--- a/bitbake/lib/bb/ui/depexp.py
+++ b/bitbake/lib/bb/ui/depexp.py
@@ -17,6 +17,7 @@
 # with this program; if not, write to the Free Software Foundation, Inc.,
 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
+import sys
 import gobject
 import gtk
 import Queue
@@ -215,6 +216,12 @@ def main(server, eventHandler, params):
         print("XMLRPC Fault getting commandline:\n %s" % x)
         return
 
+    try:
+        gtk.init_check()
+    except RuntimeError:
+        sys.stderr.write("Please set DISPLAY variable before running this command \n")
+        return
+
     shutdown = 0
 
     gtkgui = gtkthread(shutdown)