[PATCH vkd3d 04/10] include: Reintroduce hidden visibility for GUID definitions.

[Henri Verbeet]

This was dropped by d27fee64ab51c60078215f461a797edd32bc8871, presumably
because the default visibility was switched to "hidden". However, this is part
of a public header, and external users may not share our symbol visibility
defaults.

Signed-off-by: Henri Verbeet <hverbeet at codeweavers.com>
---
 include/vkd3d_windows.h | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/include/vkd3d_windows.h b/include/vkd3d_windows.h
index c1aa9f27..8398d403 100644
--- a/include/vkd3d_windows.h
+++ b/include/vkd3d_windows.h
@@ -127,18 +127,18 @@ typedef GUID IID;
 # ifdef INITGUID
 #  ifndef __cplusplus
 #   define DEFINE_GUID(name, l, w1, w2, b1, b2, b3, b4, b5, b6, b7, b8) \
-        const GUID name; \
+        const GUID name DECLSPEC_HIDDEN; \
         const GUID name = \
     { l, w1, w2, { b1, b2, b3, b4, b5, b6, b7, b8 }}
 #  else
 #   define DEFINE_GUID(name, l, w1, w2, b1, b2, b3, b4, b5, b6, b7, b8) \
-        EXTERN_C const GUID name; \
+        EXTERN_C const GUID name DECLSPEC_HIDDEN; \
         EXTERN_C const GUID name = \
     { l, w1, w2, { b1, b2, b3, b4, b5, b6, b7, b8 }}
 #  endif
 # else
 #  define DEFINE_GUID(name, l, w1, w2, b1, b2, b3, b4, b5, b6, b7, b8) \
-        EXTERN_C const GUID name;
+        EXTERN_C const GUID name DECLSPEC_HIDDEN;
 # endif /* INITGUID */
 
 /* __uuidof emulation */
@@ -239,6 +239,17 @@ typedef struct SECURITY_ATTRIBUTES SECURITY_ATTRIBUTES;
 #endif  /* _WIN32 */
 
 
+/* Define DECLSPEC_HIDDEN */
+#ifndef DECLSPEC_HIDDEN
+# if defined(__MINGW32__)
+#  define DECLSPEC_HIDDEN
+# elif defined(__GNUC__)
+#  define DECLSPEC_HIDDEN __attribute__((visibility("hidden")))
+# else
+#  define DECLSPEC_HIDDEN
+# endif
+#endif  /* DECLSPEC_HIDDEN */
+
 /* Define min() & max() macros */
 #ifndef NOMINMAX
 # ifndef min
-- 
2.20.1