adding x86_64 to TC_ARCH

host/cros_choose_profile

 #!/bin/bash
 
 # Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # This script selects a profile from the overlays.
 
 # Load common CrOS utilities.  Inside the chroot this file is installed in
 # /usr/lib/crosutils.  Outside the chroot we find it relative to the scripts
@@ skipping 67 matching lines @@
 
 TC_ARCH=$(awk -F'-' '{ print $1 }' < "${PRIMARY_BOARD_OVERLAY}/toolchain.conf")
 
 case "${TC_ARCH}" in
   arm*)
     ARCH="arm"
     ;;
   *86)
     ARCH="x86"
     ;;
+  x86_64)
+    ARCH="amd64"
+    ;;
   *)
     error "Unable to determine ARCH from toolchain: ${BOARD_VARIANT}"
     exit 1
 esac
 
 # The profile directory comes from many possible locations, the <overlay>
 # values below can be any of the board overlays, public, private, primary
 # or variant.  The name defaults to base, but can be set using --profile:
 #  * relative profile name from --profile in <overlay>/profiles/<name>
 #  * absolute profile path from --profile
@@ skipping 59 matching lines @@
   warn ""
   warn "setup_board --board ${BOARD_VARIANT} --force --profile ${PROFILE_NAME}"
   warn ""
   warn "Alternatively, you can correct the dependecy graph by using"
   warn "'emerge-${BOARD_VARIANT} -c' or 'emerge-${BOARD_VARIANT} -C <ebuild>'"
 
   sudo rm -f "${MAKE_PROFILE}"
 fi
 
 sudo ln -sf "${PROFILES_DIR}" "${MAKE_PROFILE}"