1 files changed, 3 insertions, 0 deletions

diff --git a/meta/classes/sanity.bbclass b/meta/classes/sanity.bbclass
index 3368a062ac..cff2ad3907 100644
--- a/meta/classes/sanity.bbclass
+++ b/meta/classes/sanity.bbclass
@@ -104,6 +104,9 @@ def check_sanity(e):
                 missing = missing.rstrip(',')
                 messages = messages + "Please install following missing utilities: %s\n" % missing
 
+        if os.path.basename(os.readlink('/bin/sh')) == 'dash':
+                messages = messages + "Using dash as /bin/sh causes various subtle build problems, please use bash instead.\n"
+
         omask = os.umask(022)
         if omask & 0755:
                 messages = messages + "Please use a umask which allows a+rx and u+rwx\n"