--- configure.orig	Mon Feb 28 23:06:59 2005
+++ configure	Wed Jan  7 19:51:24 2015
@@ -1526,6 +1526,7 @@ case "${target}" in
       i[3456789]86-*-vsta) ;; # don't add gprof back in
       i[3456789]86-*-go32*) ;; # don't add gprof back in
       i[3456789]86-*-msdosdjgpp*) ;; # don't add gprof back in
+      x86_64-*-*) ;;  # don't add gprof back in
       *) skipdirs=`echo " ${skipdirs} " | sed -e 's/ gprof / /'` ;;
     esac
     noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"