From 95d1df0383dc412d14672c8ec82d10685f8f3e51 Mon Sep 17 00:00:00 2001
From: "Per A. Brodtkorb" <per.andreas.brodtkorb@gmail.com>
Date: Mon, 23 Mar 2020 11:16:33 +0100
Subject: [PATCH] Fixes issue #1553: Replace wait with communicate to avoid
 potential deadlock.

---
 build.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/build.py b/build.py
index c2ff1f72..426af502 100755
--- a/build.py
+++ b/build.py
@@ -594,7 +594,7 @@ def getTool(cmdName, version, MD5, envVar, platformBinary, linuxBits=False):
 
             try:
                 p = subprocess.Popen([cmd, '--help'], stdout=subprocess.PIPE, stderr=subprocess.PIPE, env=os.environ)
-                p.wait()
+                p.communicate()
             except OSError as e:
                 _error_msg('Could not execute %s, got "%s"' % (cmd, e))
                 sys.exit(1)