diff --git a/config/CONFIG.Host.linux-x86_64 b/config/CONFIG.Host.linux-x86_64
new file mode 100644
index 000000000..e39126cec
--- /dev/null
+++ b/config/CONFIG.Host.linux-x86_64
@@ -0,0 +1,17 @@
+#*************************************************************************
+# Copyright (c) 2002 The University of Chicago, as Operator of Argonne
+#     National Laboratory.
+# Copyright (c) 2002 The Regents of the University of California, as
+#     Operator of Los Alamos National Laboratory.
+# EPICS BASE Versions 3.13.7
+# and higher are distributed subject to a Software License Agreement found
+# in file LICENSE that is included with this distribution. 
+#*************************************************************************
+# $Id$
+
+-include $(EPICS_BASE)/config/CONFIG.Host.Linux
+
+ARCH_CLASS = x86_64
+
+ARCH_DEP_CFLAGS += -D_X86_64_ -Dlinux
+
diff --git a/config/CONFIG.Host.linux-x86_64-debug b/config/CONFIG.Host.linux-x86_64-debug
new file mode 100644
index 000000000..7d0fc625c
--- /dev/null
+++ b/config/CONFIG.Host.linux-x86_64-debug
@@ -0,0 +1,13 @@
+#*************************************************************************
+# Copyright (c) 2002 The University of Chicago, as Operator of Argonne
+#     National Laboratory.
+# Copyright (c) 2002 The Regents of the University of California, as
+#     Operator of Los Alamos National Laboratory.
+# EPICS BASE Versions 3.13.7
+# and higher are distributed subject to a Software License Agreement found
+# in file LICENSE that is included with this distribution. 
+#*************************************************************************
+# $Id$
+
+-include $(EPICS_BASE)/config/CONFIG.Host.linux-x86_64
+
diff --git a/config/CONFIG_HOST_ARCH.linux-x86_64 b/config/CONFIG_HOST_ARCH.linux-x86_64
new file mode 100644
index 000000000..b15a8b405
--- /dev/null
+++ b/config/CONFIG_HOST_ARCH.linux-x86_64
@@ -0,0 +1,15 @@
+#*************************************************************************
+# Copyright (c) 2002 The University of Chicago, as Operator of Argonne
+#     National Laboratory.
+# Copyright (c) 2002 The Regents of the University of California, as
+#     Operator of Los Alamos National Laboratory.
+# EPICS BASE Versions 3.13.7
+# and higher are distributed subject to a Software License Agreement found
+# in file LICENSE that is included with this distribution. 
+#*************************************************************************
+# $Id$
+
+# Include definitions common to all Unix archs
+include $(EPICS_BASE)/config/CONFIG_HOST_ARCH.UnixCommon
+
+WIND_HOST_TYPE = x86-linux2
diff --git a/config/CONFIG_HOST_ARCH.linux-x86_64-debug b/config/CONFIG_HOST_ARCH.linux-x86_64-debug
new file mode 100644
index 000000000..6b7d91760
--- /dev/null
+++ b/config/CONFIG_HOST_ARCH.linux-x86_64-debug
@@ -0,0 +1,15 @@
+#*************************************************************************
+# Copyright (c) 2002 The University of Chicago, as Operator of Argonne
+#     National Laboratory.
+# Copyright (c) 2002 The Regents of the University of California, as
+#     Operator of Los Alamos National Laboratory.
+# EPICS BASE Versions 3.13.7
+# and higher are distributed subject to a Software License Agreement found
+# in file LICENSE that is included with this distribution. 
+#*************************************************************************
+# $Id$
+
+# Include definitions common to all Unix archs
+include $(EPICS_BASE)/config/CONFIG_HOST_ARCH.linux-x86_64
+
+HOST_OPT = NO