From be2db1687ec37e821175f85d0f116cb175b61d0f Mon Sep 17 00:00:00 2001
From: David Brown <david.brown@linaro.org>
Date: Tue, 11 May 2021 12:44:40 -0600
Subject: [PATCH] Add changelog for posix definition

Signed-off-by: David Brown <david.brown@linaro.org>
---
 ChangeLog.d/posix-define.txt | 6 ++++++
 1 file changed, 6 insertions(+)
 create mode 100644 ChangeLog.d/posix-define.txt

diff --git a/ChangeLog.d/posix-define.txt b/ChangeLog.d/posix-define.txt
new file mode 100644
index 000000000..98cf2d012
--- /dev/null
+++ b/ChangeLog.d/posix-define.txt
@@ -0,0 +1,6 @@
+Bugfix
+   * In library/net_sockets.c, _POSIX_C_SOURCE and _XOPEN_SOURCE are
+     defined to specific values.  If the code is used in a context
+     where these are already defined, this can result in a compilation
+     error.  Instead, assume that if they are defined, the values will
+     be adequate to build Mbed TLS.