data: escape '$' in shell variable assignment

Running bitbake inside make results in the exported environment variable
MAKEOVERRIDES="${-*-command-variables-*-}", which the shell chokes on
when trying to expand it. But of course, it probably shouldn't have been
trying to expand it in the first place -- so just escape the dollar
sign.

Signed-off-by: Richard Tollerton <rich.tollerton@ni.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

diff --git a/lib/bb/data.py b/lib/bb/data.py
index eb628c7df35da67f1c532310c476296448d7658c..82eefef1a60dbfbc4946bd01bd2f82333f9eb76d 100644 (file)
--- a/lib/bb/data.py
+++ b/lib/bb/data.py
@@ -238,6 +238,7 @@ def emit_var(var, o=sys.__stdout__, d = init(), all=False):
     # to a shell, we need to escape the quotes in the var
     alter = re.sub('"', '\\"', val)
     alter = re.sub('\n', ' \\\n', alter)
+    alter = re.sub('\\$', '\\\\$', alter)
     o.write('%s="%s"\n' % (varExpanded, alter))
     return 0