diff -up libEMF-1.0.6/include/libEMF/wine/winnt.h.axp libEMF-1.0.6/include/libEMF/wine/winnt.h
--- libEMF-1.0.6/include/libEMF/wine/winnt.h.axp	2012-09-03 22:50:29.000000000 +0200
+++ libEMF-1.0.6/include/libEMF/wine/winnt.h	2012-09-03 22:52:12.000000000 +0200
@@ -901,7 +901,7 @@ PVOID WINAPI             RtlVirtualUnwin
 #endif /* __x86_64__ */
 
 /* Alpha context definitions */
-#ifdef _ALPHA_
+#if defined(__alpha__)
 
 #define CONTEXT_ALPHA   0x00020000