From c16f1b49bc77bfd83f75a4cc62d3a86d79936398 Mon Sep 17 00:00:00 2001
From: Alex_Industrial <apnet.alexzyr@gmail.com>
Date: Fri, 2 Feb 2024 16:04:20 +0300
Subject: [PATCH] windows build fix
 (https://github.com/zerotier/libzt/issues/263)

---
 CMakeLists.txt            |  1 +
 include/ZeroTierSockets.h | 22 +++++++++++++---------
 2 files changed, 14 insertions(+), 9 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 24b1d79f..13c0b8a3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -92,6 +92,7 @@ include_directories(${ZTO_SRC_DIR}/osdep)
 include_directories(${ZTO_SRC_DIR}/ext/libnatpmp)
 include_directories(${ZTO_SRC_DIR}/ext/prometheus-cpp-lite-1.0/core/include)
 include_directories(${ZTO_SRC_DIR}/ext/prometheus-cpp-lite-1.0/simpleapi/include)
+include_directories(${ZTO_SRC_DIR}/ext/)
 # libzt
 include_directories(${PROJ_DIR}/src)
 include_directories(${PROJ_DIR}/include)
diff --git a/include/ZeroTierSockets.h b/include/ZeroTierSockets.h
index ba9732ae..5523e8bd 100644
--- a/include/ZeroTierSockets.h
+++ b/include/ZeroTierSockets.h
@@ -197,7 +197,7 @@ typedef enum {
 /**
  * Error variable set after each `zts_*` socket call. Provides additional error context.
  */
-extern int zts_errno;
+extern ZTS_API int zts_errno;
 
 typedef enum {
     /** Operation not permitted */
@@ -1011,15 +1011,19 @@ typedef struct {
 //----------------------------------------------------------------------------//
 
 #if defined(_WIN32)
-#ifdef ADD_EXPORTS
-#define ZTS_API __declspec(dllexport)
+    #ifndef ZTS_STATIC
+        #ifdef ADD_EXPORTS
+            #define ZTS_API __declspec(dllexport)
+        #else
+            #define ZTS_API __declspec(dllimport)
+        #endif
+    #else
+        #define ZTS_API
+    #endif
+ 	#define ZTCALL __cdecl
 #else
-#define ZTS_API __declspec(dllimport)
-#endif
-#define ZTCALL __cdecl
-#else
-#define ZTS_API
-#define ZTCALL
+    #define ZTS_API
+    #define ZTCALL
 #endif
 
 //----------------------------------------------------------------------------//