From c56f915cc3ab43543efff504cb2406260a543004 Mon Sep 17 00:00:00 2001
From: Alexej Harm <alexej.h@xiphos.de>
Date: Mon, 9 Sep 2019 14:56:01 +0200
Subject: [PATCH] fixed shared library support

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

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0f7d84f..2d8462d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -74,6 +74,9 @@ endif( )
 if( BUILD_SHARED_LIBS )
     set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -fPIC")
     set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -fPIC")
+    if( WIN32 )
+      target_compile_definitions( tz PRIVATE -DDATE_BUILD_DLL=1 PUBLIC -DDATE_USE_DLL=1 )
+    endif( )
 endif( )
 
 target_link_libraries( tz ${CMAKE_THREAD_LIBS_INIT} ${OPTIONAL_LIBRARIES} )