From 92cf234b0c2eb41fbbac38b173723a4a58d3621b Mon Sep 17 00:00:00 2001
From: Azat Khuzhin <a3at.mail@gmail.com>
Date: Tue, 14 Mar 2017 00:33:26 +0300
Subject: [PATCH] log/win32: fix exporting extern variable

  ==> win:   C:\vagrant\log.c(73): error C2370: 'event_debug_logging_mask_' : redefinition; different storage class [C:\vagrant\.cmake-vagrant\event_core_shared.vcxproj]
---
 include/event2/visibility.h | 12 +++++++++++-
 log-internal.h              |  4 ++--
 log.c                       |  1 +
 3 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/include/event2/visibility.h b/include/event2/visibility.h
index 57ea3b76..af30905d 100644
--- a/include/event2/visibility.h
+++ b/include/event2/visibility.h
@@ -34,6 +34,7 @@
     defined(event_core_shared_EXPORTS) || \
     defined(event_pthreads_shared_EXPORTS) || \
     defined(event_openssl_shared_EXPORTS)
+
 # if defined (__SUNPRO_C) && (__SUNPRO_C >= 0x550)
 #  define EVENT2_EXPORT_SYMBOL __global
 # elif defined __GNUC__
@@ -43,12 +44,21 @@
 # else
 #  define EVENT2_EXPORT_SYMBOL /* unknown compiler */
 # endif
-#else
+
+#else /* event_*_EXPORTS */
+
 # if defined(_MSC_VER)
 #  define EVENT2_EXPORT_SYMBOL extern __declspec(dllimport)
 # else
 #  define EVENT2_EXPORT_SYMBOL
 # endif
+
+#endif /* event_*_EXPORTS */
+
+#if defined(_MSC_VER)
+# define EVENT2_EXPORT_SYMBOL_DECL __declspec(dllimport)
+#else
+# define EVENT2_EXPORT_SYMBOL_DECL extern
 #endif
 
 #endif /* EVENT2_VISIBILITY_H_INCLUDED_ */
diff --git a/log-internal.h b/log-internal.h
index 4c927afc..b9d19f13 100644
--- a/log-internal.h
+++ b/log-internal.h
@@ -48,8 +48,8 @@ extern "C" {
 #endif
 
 #ifdef EVENT_DEBUG_LOGGING_ENABLED
-EVENT2_EXPORT_SYMBOL
-extern ev_uint32_t event_debug_logging_mask_;
+EVENT2_EXPORT_SYMBOL_DECL
+ev_uint32_t event_debug_logging_mask_;
 #define event_debug_get_logging_mask_() (event_debug_logging_mask_)
 #else
 #define event_debug_get_logging_mask_() (0)
diff --git a/log.c b/log.c
index 0bbee620..ed955575 100644
--- a/log.c
+++ b/log.c
@@ -69,6 +69,7 @@ static event_fatal_cb fatal_fn = NULL;
 #define DEFAULT_MASK 0
 #endif
 
+EVENT2_EXPORT_SYMBOL
 ev_uint32_t event_debug_logging_mask_ = DEFAULT_MASK;
 #endif /* EVENT_DEBUG_LOGGING_ENABLED */