Giovanni Mascellani : tests: Define WIDL macros in utils.h.

[Alexandre Julliard]

Module: vkd3d
Branch: master
Commit: 85fe4c421b8a72fa78d81feaafe63d9e8d49fdf7
URL:    https://gitlab.winehq.org/wine/vkd3d/-/commit/85fe4c421b8a72fa78d81feaafe63d...

Author: Giovanni Mascellani <gmascellani(a)codeweavers.com>
Date:   Wed Jul 10 12:30:10 2024 +0200

tests: Define WIDL macros in utils.h.

This way other headers including utils.h, like d3d12_test_utils.h,
are self-contained.

---

 tests/utils.h | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/tests/utils.h b/tests/utils.h
index f9d3d9b1..081c4cd9 100644
--- a/tests/utils.h
+++ b/tests/utils.h
@@ -19,6 +19,25 @@
 #ifndef __VKD3D_TEST_UTILS_H
 #define __VKD3D_TEST_UTILS_H
 
+/* Hack for MinGW-w64 headers.
+ *
+ * We want to use WIDL C inline wrappers because some methods
+ * in D3D12 interfaces return aggregate objects. Unfortunately,
+ * WIDL C inline wrappers are broken when used with MinGW-w64
+ * headers because FORCEINLINE expands to extern inline
+ * which leads to the "multiple storage classes in declaration
+ * specifiers" compiler error.
+ */
+#ifdef __MINGW32__
+# include <_mingw.h>
+# ifdef __MINGW64_VERSION_MAJOR
+#  undef __forceinline
+#  define __forceinline __inline__ __attribute__((__always_inline__,__gnu_inline__))
+# endif
+#endif
+
+#define COBJMACROS
+#define WIDL_C_INLINE_WRAPPERS
 #include <limits.h>
 #include <stdbool.h>
 #include <stdint.h>