1diff --git a/src/3rdparty/libpng/pngpriv.h b/src/3rdparty/libpng/pngpriv.h
2index 583c26f9bd..2ab9b70d73 100644
3--- a/src/3rdparty/libpng/pngpriv.h
4+++ b/src/3rdparty/libpng/pngpriv.h
5@@ -23,6 +23,12 @@
6 #ifndef PNGPRIV_H
7 #define PNGPRIV_H
8
9+#ifdef _MSC_VER
10+#  ifndef _CRT_SECURE_NO_DEPRECATE
11+#    define _CRT_SECURE_NO_DEPRECATE
12+#  endif
13+#endif
14+
15 /* Feature Test Macros.  The following are defined here to ensure that correctly
16  * implemented libraries reveal the APIs libpng needs to build and hide those
17  * that are not needed and potentially damaging to the compilation.
18@@ -308,6 +314,11 @@
19 #  endif
20 #endif /* Setting PNG_BUILD_DLL if required */
21
22+/* Modfied for usage in Qt: Do not export the libpng APIs */
23+#ifdef PNG_BUILD_DLL
24+#undef PNG_BUILD_DLL
25+#endif
26+
27 /* See pngconf.h for more details: the builder of the library may set this on
28  * the command line to the right thing for the specific compilation system or it
29  * may be automagically set above (at present we know of no system where it does
30@@ -546,6 +557,9 @@
31 #if defined(WIN32) || defined(_Windows) || defined(_WINDOWS) || \
32     defined(_WIN32) || defined(__WIN32__)
33 #  include <windows.h>  /* defines _WINDOWS_ macro */
34+#  if defined(WINAPI_FAMILY) && (WINAPI_FAMILY==WINAPI_FAMILY_APP || WINAPI_FAMILY==WINAPI_FAMILY_PHONE_APP)
35+#    define _WINRT_ /* Define a macro for Windows Runtime builds */
36+#  endif
37 #endif
38 #endif /* PNG_VERSION_INFO_ONLY */
39
40@@ -556,7 +570,7 @@
41
42 /* Memory model/platform independent fns */
43 #ifndef PNG_ABORT
44-#  ifdef _WINDOWS_
45+#  if (defined(_WINDOWS_) || defined(_WIN32_WCE)) && !defined(_WINRT_)
46 #    define PNG_ABORT() ExitProcess(0)
47 #  else
48 #    define PNG_ABORT() abort()
49