From 9a9ea1434ab4d204d73503a61d5c1a044ce07366 Mon Sep 17 00:00:00 2001
From: Daniel Mensinger <daniel@mensinger-ka.de>
Date: Thu, 6 Jun 2019 11:07:12 +0200
Subject: [PATCH] cmake: Fix cygwin failures

---
 mesonbuild/cmake/client.py | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/mesonbuild/cmake/client.py b/mesonbuild/cmake/client.py
index 4581d6d5d..f4b549b14 100644
--- a/mesonbuild/cmake/client.py
+++ b/mesonbuild/cmake/client.py
@@ -498,6 +498,15 @@ class CMakeClient:
         try:
             self.proc.wait(timeout=2)
         except TimeoutExpired:
-            self.proc.terminate()
+            # Terminate CMake if there is a timeout
+            # terminate() may throw a platform specific exception if the process has already
+            # terminated. This may be the case if there is a race condition (CMake exited after
+            # the timeout but before the terminate() call). Additionally, this behavior can
+            # also be triggered on cygwin if CMake crashes.
+            # See https://github.com/mesonbuild/meson/pull/4969#issuecomment-499413233
+            try:
+                self.proc.terminate()
+            except Exception:
+                pass
 
         self.proc = None