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
# 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