recipetool: ignore zero-length setup.py files

If a setup.py file exists it ought to have something in it before we
consider the source tree to be a Python module and treating it as such.
(A counter-example is https://www.bro.org/downloads/binpac-0.50.tar.gz -
it's not clear why this has a zero-length setup.py in it but we should
pay no attention to it.)

Fixes [YOCTO #12923].

(From OE-Core rev: 548a5c8f42c6ac1b0f7962926d05276e71505678)

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 7 insertions, 2 deletions

diff --git a/scripts/lib/recipetool/create_buildsys_python.py b/scripts/lib/recipetool/create_buildsys_python.py
index ac9bc9237c..adfa377956 100644
--- a/scripts/lib/recipetool/create_buildsys_python.py
+++ b/scripts/lib/recipetool/create_buildsys_python.py
@@ -154,8 +154,13 @@ class PythonRecipeHandler(RecipeHandler):
         if 'buildsystem' in handled:
             return False
 
-        if not RecipeHandler.checkfiles(srctree, ['setup.py']):
-            return
+        # Check for non-zero size setup.py files
+        setupfiles = RecipeHandler.checkfiles(srctree, ['setup.py'])
+        for fn in setupfiles:
+            if os.path.getsize(fn):
+                break
+        else:
+            return False
 
         # setup.py is always parsed to get at certain required information, such as
         # distutils vs setuptools