From 50d5887e65c370db03a4155e6eb78e2292ff52a9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Luis=20D=C3=ADaz=20M=C3=A1s?= <piponazo@gmail.com>
Date: Sat, 17 Apr 2021 17:32:24 +0200
Subject: [PATCH] localtime_r support on MinGW

---
 xmpsdk/CMakeLists.txt | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/xmpsdk/CMakeLists.txt b/xmpsdk/CMakeLists.txt
index a22698fb..92317a76 100644
--- a/xmpsdk/CMakeLists.txt
+++ b/xmpsdk/CMakeLists.txt
@@ -41,10 +41,16 @@ target_include_directories(exiv2-xmp
 # ("billion laughs attack").
 # See https://bugzilla.redhat.com/show_bug.cgi?id=888769
 target_compile_definitions(exiv2-xmp PRIVATE BanAllEntityUsage=1)
+
 if (MSVC)
     target_compile_definitions(exiv2-xmp PRIVATE XML_STATIC)
 endif()
 
+if (MINGW)
+    # https://stackoverflow.com/questions/18551409/localtime-r-support-on-mingw
+    target_compile_definitions(exiv2-xmp PRIVATE _POSIX_THREAD_SAFE_FUNCTIONS)
+endif()
+
 if (BUILD_SHARED_LIBS)
     set_property(TARGET exiv2-xmp PROPERTY POSITION_INDEPENDENT_CODE ON)
 endif()