[PATCH 1/1] include/guiddef.h: use Mingw64's __uuidof when present

[Eric Pouech]

From: Eric Pouech <eric.pouech at gmail.com>

otherwise Wine's and Mingw64's __uuidof() enter in conflict (C++)

Signed-off-by: Eric Pouech <eric.pouech at gmail.com>
---
 include/guiddef.h | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/include/guiddef.h b/include/guiddef.h
index 912fcea0cbe..5c8a1ab8a72 100644
--- a/include/guiddef.h
+++ b/include/guiddef.h
@@ -44,7 +44,11 @@ typedef struct _GUID
 /* Macros for __uuidof emulation */
 #ifdef __cplusplus
 # if defined(__MINGW32__)
-#  define __WINE_UUID_ATTR __attribute__((selectany))
+/* Mingw64 can provide support for __uuidof and __CRT_UUID_DECL... use Mingw64's when present */
+#  if !defined(__uuidof)
+#   define __WINE_UUID_ATTR __attribute__((selectany))
+#   undef __CRT_UUID_DECL
+#  endif
 # elif defined(__GNUC__)
 #  define __WINE_UUID_ATTR __attribute__((visibility("hidden"),weak))
 # endif
@@ -76,7 +80,7 @@ extern "C++" {
 
 #define __uuidof(type) __wine_uuidof_type<__typeof__(type)>::inst::uuid
 
-#else /* __WINE_UUID_ATTR */
+#elif !defined(__CRT_UUID_DECL) /* __WINE_UUID_ATTR */
 
 #define __CRT_UUID_DECL(type,l,w1,w2,b1,b2,b3,b4,b5,b6,b7,b8)
 
-- 
GitLab

https://gitlab.winehq.org/wine/wine/-/merge_requests/21