1 files changed, 25 insertions, 0 deletions
diff --git a/include/ntapi/nt_abi.h b/include/ntapi/nt_abi.h
index de99106..95fc9bf 100644
--- a/include/ntapi/nt_abi.h
+++ b/include/ntapi/nt_abi.h
@@ -14,15 +14,40 @@
 
 #ifndef __in
 #define __in
+#endif
+
+#ifndef __out
 #define __out
+#endif
+
+#ifndef __in_opt
 #define __in_opt
+#endif
+
+#ifndef __out_opt
 #define __out_opt
+#endif
+
+#ifndef __in_out
 #define __in_out
+#endif
+
+#ifndef __in_out_opt
 #define __in_out_opt
+#endif
+
+#ifndef __optional
 #define __optional
+#endif
+
+#ifndef __reserved
 #define __reserved
 #endif
 
+#ifndef __inline__
+#define __inline__     __inline
+#endif
+
 typedef unsigned short wchar16_t;
 typedef unsigned int   wchar32_t;