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diff --git a/gnu-efi/inc/eficompiler.h b/gnu-efi/inc/eficompiler.h
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+/*++
+
+Copyright (c) 2016 Pete Batard <pete@akeo.ie>
+
+Module Name:
+
+ eficompiler.h
+
+Abstract:
+
+ Compiler specific adjustments
+
+--*/
+
+#ifdef _MSC_EXTENSIONS
+#define EFI_UNUSED
+#else
+#define EFI_UNUSED __attribute__((__unused__))
+#endif
+
+#ifdef _MSC_EXTENSIONS
+#define ALIGN(x) __declspec(align(x))
+#else
+#define ALIGN(x) __attribute__((__aligned__(x)))
+#endif
+
+/* Also add a catch-all on __attribute__() for MS compilers */
+#ifdef _MSC_EXTENSIONS
+#define __attribute__(x)
+#endif