diff -rdup gcc-4.2.1.oorig/gcc/config.gcc gcc-4.2.1/gcc/config.gcc
--- gcc-4.2.1.oorig/gcc/config.gcc	2007-10-01 11:52:52.000000000 +0200
+++ gcc-4.2.1/gcc/config.gcc	2007-10-01 13:22:12.000000000 +0200
@@ -494,6 +494,9 @@ case ${target} in
     alpha*)
       tm_file="${cpu_type}/${cpu_type}.h alpha/elf.h alpha/linux.h alpha/linux-elf.h gnu.h ${tm_file}"
       ;;
+    i[34567]86-*hurd*-*)
+      tm_file="${cpu_type}/${cpu_type}.h i386/unix.h i386/att.h dbxelf.h elfos.h svr4.h i386/gnu.h gnu.h ${tm_file}"
+      ;;
     i[34567]86-*-*)
       tm_file="${cpu_type}/${cpu_type}.h i386/unix.h i386/att.h dbxelf.h elfos.h svr4.h linux.h i386/linux.h gnu.h ${tm_file}"
       ;;