add options for x86_64 and amd will small letters

diff --git a/libdrm/xf86drm.h b/libdrm/xf86drm.h
index 7521e34..d2ca957 100644 (file)
--- a/libdrm/xf86drm.h
+++ b/libdrm/xf86drm.h
@@ -287,7 +287,7 @@ typedef struct _drmSetVersion {
 #define DRM_LOCK_CONT  0x40000000U /**< Hardware lock is contended */
 
 #if defined(__GNUC__) && (__GNUC__ >= 2)
-# if defined(__i386) || defined(__AMD64__)
+# if defined(__i386) || defined(__AMD64__) || defined(__x86_64__) || defined(__amd64__)
                                /* Reflect changes here to drmP.h */
 #define DRM_CAS(lock,old,new,__ret)                                    \
        do {                                                           \