From 8ae8c6690b41f6cd40dae14d471ce29b500c66c9 Mon Sep 17 00:00:00 2001
From: Friedemann Kleint <Friedemann.Kleint@qt.io>
Date: Wed, 17 Apr 2019 15:03:23 +0200
Subject: [PATCH] MinGW: Fix developer build

In some build configurations, the build with MinGW would fail due to missing
declaration of localtime_r(). This is only visible when
_POSIX_THREAD_SAFE_FUNCTIONS is defined, which is achieved by including
<unistd.h>. Amends 6c543879a31d7d13a6b87e6332f6913f2f89f5e6.

Task-number: QTBUG-71030
Change-Id: I71296f24a450159d1c548e1ad836a2b42e42009f
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
---
 src/corelib/global/qglobal_p.h  | 3 +++
 src/corelib/tools/qdatetime.cpp | 3 +++
 2 files changed, 6 insertions(+)

diff --git a/src/corelib/global/qglobal_p.h b/src/corelib/global/qglobal_p.h
index d52f6268e4..58bc8b7bf3 100644
--- a/src/corelib/global/qglobal_p.h
+++ b/src/corelib/global/qglobal_p.h
@@ -61,6 +61,9 @@
 #endif
 
 #if defined(__cplusplus)
+#ifdef Q_CC_MINGW
+#  include <unistd.h> // Define _POSIX_THREAD_SAFE_FUNCTIONS to obtain localtime_r()
+#endif
 #include <time.h>
 
 QT_BEGIN_NAMESPACE
diff --git a/src/corelib/tools/qdatetime.cpp b/src/corelib/tools/qdatetime.cpp
index 80d6dada60..511dbf0db8 100644
--- a/src/corelib/tools/qdatetime.cpp
+++ b/src/corelib/tools/qdatetime.cpp
@@ -58,6 +58,9 @@
 #endif
 
 #include <cmath>
+#ifdef Q_CC_MINGW
+#  include <unistd.h> // Define _POSIX_THREAD_SAFE_FUNCTIONS to obtain localtime_r()
+#endif
 #include <time.h>
 #ifdef Q_OS_WIN
 #  include <qt_windows.h>