From 599a1cfbcb6f14c6c6a3dff5f3e2b1622509cfe8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20Janiszewski?= <janisozaur@gmail.com>
Date: Fri, 7 Oct 2016 11:01:01 +0200
Subject: [PATCH] Make sure MinGW knows about "%zu" format specifier

---
 CMakeLists.txt | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 817fed723c..3971e7e5d7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -261,6 +261,9 @@ if (NOT DISABLE_OPENGL)
 	if (WIN32)
 		# Curl depends on openssl and ws2 in mingw builds, but is not wired up in pkg-config
 		set(GLLIBS opengl32)
+		# mingw complains about "%zu" not being a valid format specifier for printf, unless we
+		# tell it that it is
+		set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -D__USE_MINGW_ANSI_STDIO=1")
 	elseif (APPLE)
 		# GL doesn't work nicely with macOS, while find_package doesn't work with multiarch on Ubuntu.
 		find_package(OpenGL REQUIRED)