release-request-849a3dc3-db53-4e70-9b7a-92295133ddeb-for-git_pi-release-4346747 snap-temp-L27900000104043986

Change-Id: Ic8c37abcc16030166b83f5392a2b988713cf17c5
diff --git a/checkcolor.py b/checkcolor.py
index 9e62d3d..204c7e5 100755
--- a/checkcolor.py
+++ b/checkcolor.py
@@ -72,6 +72,9 @@
   except OSError as e:
     if e.errno == errno.ENOENT:
       print 'Error in color lint check'
+      if not os.environ.get('ANDROID_BUILD_TOP'):
+        print 'Try setting up your environment first:'
+        print '    source build/envsetup.sh && lunch <target>'
       sys.exit(1)
 
   return (exitcode, stdout)