setup.py: check for the existence of the build directory

Signed-off-by: Jaroslav Kysela <perex@perex.cz>

diff --git a/setup.py b/setup.py
index fe432777521a4a95641b0af3f0c8a4a46d0410f0..58d451312dbd6418118675b2666b8dd70ad66e62 100755 (executable)
--- a/setup.py
+++ b/setup.py
@@ -69,7 +69,7 @@ SOFILES = [
 
 uname = os.uname()
 dir = 'build/lib.%s-%s-%s/pyalsa' % (uname[0].lower(), uname[4], sys.version[:3])
-files = os.listdir(dir)
+files = os.path.exists(dir) and os.listdir(dir) or []
 for f in SOFILES:
   path = ''
   for f2 in files: