From b4a4dcd788bc74008cceb3283ceb41f3132e9eee Mon Sep 17 00:00:00 2001
From: denchat <19730041+denchat@users.noreply.github.com>
Date: Thu, 2 May 2019 14:09:11 +0700
Subject: [PATCH] Add `#define FMT_EXTERN extern` only when not
 `FMT_HEADER_ONLY`

---
 include/fmt/core.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/include/fmt/core.h b/include/fmt/core.h
index faeea94f..7c55ffad 100644
--- a/include/fmt/core.h
+++ b/include/fmt/core.h
@@ -199,6 +199,12 @@
 #  define FMT_EXTERN_TEMPLATE_API
 #endif
 
+#if !define(FMT_HEADER_ONLY)
+#  define FMT_EXTERN extern
+#else
+#  define FMT_EXTERN
+#endif
+
 #ifndef FMT_ASSERT
 #  define FMT_ASSERT(condition, message) assert((condition) && message)
 #endif