--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/mkconfig.sh	Fri Jul 17 14:47:48 2009 +0900
@@ -0,0 +1,110 @@
+#! /bin/sh
+
+# Copyright (C) 2001, 2002, 2006, 2007 Free Software Foundation, Inc.
+# This file is part of GCC.
+
+# GCC is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+
+# GCC is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with GCC; see the file COPYING3.  If not see
+# <http://www.gnu.org/licenses/>.  
+
+
+# Generate gcc's various configuration headers:
+# config.h, tconfig.h, bconfig.h, tm.h, and tm_p.h.
+# $1 is the file to generate.  DEFINES, HEADERS, and possibly
+# TARGET_CPU_DEFAULT are expected to be set in the environment.
+
+if [ -z "$1" ]; then
+    echo "Usage: DEFINES='list' HEADERS='list' \\" >&2
+    echo "  [TARGET_CPU_DEFAULT='default'] mkconfig.sh FILE" >&2
+    exit 1
+fi
+
+output=$1
+rm -f ${output}T
+
+# This converts a file name into header guard macro format.
+hg_sed_expr='y,abcdefghijklmnopqrstuvwxyz./,ABCDEFGHIJKLMNOPQRSTUVWXYZ__,'
+header_guard=GCC_`echo ${output} | sed -e ${hg_sed_expr}`
+
+# Add multiple inclusion protection guard, part one.
+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
+    echo "#define TARGET_CPU_DEFAULT ($TARGET_CPU_DEFAULT)" >> ${output}T
+fi
+
+# Provide defines for other macros set in config.gcc for this file.
+for def in $DEFINES; do
+    echo "#ifndef $def" | sed 's/=.*//' >> ${output}T
+    echo "# define $def" | sed 's/=/ /' >> ${output}T
+    echo "#endif" >> ${output}T
+done
+
+# The first entry in HEADERS may be auto-FOO.h ;
+# it wants to be included even when not -DIN_GCC.
+if [ -n "$HEADERS" ]; then
+    set $HEADERS
+    case "$1" in auto-* )
+	echo "#include \"$1\"" >> ${output}T
+	shift
+	;;
+    esac
+    if [ $# -ge 1 ]; then
+	echo '#ifdef IN_GCC' >> ${output}T
+	for file in "$@"; do
+	    echo "# include \"$file\"" >> ${output}T
+	done
+	echo '#endif' >> ${output}T
+    fi
+fi
+
+# If this is tm.h, now include insn-constants.h and insn-flags.h only
+# if IN_GCC is defined but neither GENERATOR_FILE nor USED_FOR_TARGET
+# is defined.  (Much of this is temporary.)
+
+case $output in
+    tm.h )
+        cat >> ${output}T <<EOF
+#if defined IN_GCC && !defined GENERATOR_FILE && !defined USED_FOR_TARGET
+# include "insn-constants.h"
+# include "insn-flags.h"
+#endif
+EOF
+    ;;
+esac
+
+# Add multiple inclusion protection guard, part two.
+echo "#endif /* ${header_guard} */" >> ${output}T
+
+# Avoid changing the actual file if possible.
+if [ -f $output ] && cmp ${output}T $output >/dev/null 2>&1; then
+    echo $output is unchanged >&2
+    rm -f ${output}T
+else
+    mv -f ${output}T $output
+fi
+
+# Touch a stamp file for Make's benefit.
+rm -f cs-$output
+echo timestamp > cs-$output