From: Tim-Philipp Müller <tim@centricular.com>
Date: Sat, 25 Aug 2018 20:53:07 +0000 (+0200)
Subject: gstconfig.h: add GST_API_IMPORT define
X-Git-Tag: 1.16.2~267
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=50038bed79e056eee109572db03113999cc7eb38;p=platform%2Fupstream%2Fgstreamer.git

gstconfig.h: add GST_API_IMPORT define

This is for use by the various GST_*_API decorators and
will be what they get defined to when a library API is being
used by external users of that library (not the library itself
whilst it's being compiled).

In most cases it will simply map to a plain 'extern' but on
Windows with MSVC it will need to map to __declspec(dllimport).
For functions this is not strictly needed, but for exported
variables it is.

https://bugzilla.gnome.org/show_bug.cgi?id=797185
---

diff --git a/gst/gstconfig.h.in b/gst/gstconfig.h.in
index 33dfed1..cb92a2c 100644
--- a/gst/gstconfig.h.in
+++ b/gst/gstconfig.h.in
@@ -155,6 +155,12 @@
 # endif
 #endif
 
+#if defined(_MSC_VER) && !defined(GST_STATIC_COMPILATION)
+# define GST_API_IMPORT __declspec(dllimport) extern
+#else
+# define GST_API_IMPORT extern
+#endif
+
 #ifndef GST_API
 #define GST_API GST_EXPORT
 #endif