From 4cb893c780525bc622534d1983cbefe01f2565f3 Mon Sep 17 00:00:00 2001
From: Howard Hinnant <howard.hinnant@gmail.com>
Date: Tue, 5 Sep 2017 20:07:13 -0400
Subject: [PATCH] Enable DATE_BUILD_DLL for Linux and macOS

---
 tz.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/tz.h b/tz.h
index 97b6c60..2476cc4 100644
--- a/tz.h
+++ b/tz.h
@@ -134,7 +134,11 @@ static_assert(HAS_REMOTE_API == 0 ? AUTO_DOWNLOAD == 0 : true,
 #    define DATE_API
 #  endif
 #else
-#  define DATE_API
+#  ifdef DATE_BUILD_DLL
+#    define DATE_API __attribute__ ((visibility ("default")))
+#  else
+#    define DATE_API
+#  endif
 #endif
 
 namespace date