* tree-ssa-dce.c (DCE_TODOs): New.

[pf3gnuchains/gcc-fork.git] / gcc / mkconfig.sh

diff --git a/gcc/mkconfig.sh b/gcc/mkconfig.sh
index 78c9a99..d47667d 100644 (file)
--- a/gcc/mkconfig.sh
+++ b/gcc/mkconfig.sh
@@ -1,6 +1,6 @@
 #! /bin/sh
 
-# Copyright (C) 2001, 2002 Free Software Foundation, Inc.
+# Copyright (C) 2001, 2002, 2006 Free Software Foundation, Inc.
 # This file is part of GCC.
 
 # GCC is free software; you can redistribute it and/or modify
@@ -41,6 +41,14 @@ header_guard=GCC_`echo ${output} | sed -e ${hg_sed_expr}`
 echo "#ifndef ${header_guard}" >> ${output}T
 echo "#define ${header_guard}" >> ${output}T
 
+# A special test to ensure that build-time files don't blindly use
+# config.h.
+if test x"$output" = x"config.h"; then
+  echo "#ifdef GENERATOR_FILE" >> ${output}T
+  echo "#error config.h is for the host, not build, machine." >> ${output}T
+  echo "#endif" >> ${output}T
+fi
+
 # Define TARGET_CPU_DEFAULT if the system wants one.
 # This substitutes for lots of *.h files.
 if [ "$TARGET_CPU_DEFAULT" != "" ]; then