--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/opt-read.awk	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,123 @@
+#  Copyright (C) 2003-2017 Free Software Foundation, Inc.
+#  Contributed by Kelley Cook, June 2004.
+#  Original code from Neil Booth, May 2003.
+#
+# This program 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.
+# 
+# This program 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 this program; see the file COPYING3.  If not see
+# <http://www.gnu.org/licenses/>.
+
+# Read in the option records generated from opt-gather.awk.
+
+BEGIN {
+	n_opts = 0
+	n_langs = 0
+	n_target_save = 0
+	n_extra_vars = 0
+	n_extra_target_vars = 0
+	n_extra_masks = 0
+	n_extra_c_includes = 0
+	n_extra_h_includes = 0
+	n_enums = 0
+	have_save = 0;
+	quote = "\042"
+	comma = ","
+	FS=SUBSEP
+	# Default the name of header created from opth-gen.awk to options.h
+	if (header_name == "") header_name="options.h"
+}
+
+# Collect the text and flags of each option into an array
+	{
+		if ($1 == "Language") {
+			langs[n_langs] = $2
+                        lang_numbers[$2] = n_langs
+			n_langs++;
+		}
+		else if ($1 == "TargetSave") {
+			# Make sure the declarations are put in source order
+			target_save_decl[n_target_save] = $2
+			n_target_save++
+		}
+		else if ($1 == "Variable") {
+			extra_vars[n_extra_vars] = $2
+			n_extra_vars++
+			name = host_wide_int_var_name($2)
+			if (name != "")
+				host_wide_int[name] = "yes"
+		}
+		else if ($1 == "TargetVariable") {
+			# Combination of TargetSave and Variable
+			extra_vars[n_extra_vars] = $2
+			n_extra_vars++
+
+			var = $2
+			sub(" *=.*", "", var)
+			orig_var = var
+			name = var
+			type = var
+			sub("^.*[ *]", "", name)
+			sub(" *" name "$", "", type)
+			target_save_decl[n_target_save] = type " x_" name
+			n_target_save++
+
+			extra_target_vars[n_extra_target_vars] = name
+			n_extra_target_vars++
+		}
+		else if ($1 == "HeaderInclude") {
+			extra_h_includes[n_extra_h_includes++] = $2;
+		}
+		else if ($1 == "SourceInclude")  {
+			extra_c_includes[n_extra_c_includes++] = $2;
+		}
+		else if ($1 == "Enum") {
+			props = $2
+			name = opt_args("Name", props)
+			type = opt_args("Type", props)
+			unknown_error = opt_args("UnknownError", props)
+			enum_names[n_enums] = name
+			enum_type[name] = type
+			enum_index[name] = n_enums
+			enum_unknown_error[name] = unknown_error
+			enum_help[name] = $3
+			n_enums++
+		}
+		else if ($1 == "EnumValue")  {
+			props = $2
+			enum_name = opt_args("Enum", props)
+			string = opt_args("String", props)
+			value = opt_args("Value", props)
+			val_flags = "0"
+			val_flags = val_flags \
+			  test_flag("Canonical", props, "| CL_ENUM_CANONICAL") \
+			  test_flag("DriverOnly", props, "| CL_ENUM_DRIVER_ONLY")
+			enum_data[enum_name] = enum_data[enum_name] \
+			  "  { " quote string quote ", " value ", " val_flags \
+			  " },\n"
+		}
+		else {
+			name = opt_args("Mask", $1)
+			if (name == "") {
+				opts[n_opts]  = $1
+				opt_numbers[$1] = n_opts
+				flags[n_opts] = $2
+				help[n_opts]  = $3
+				for (i = 4; i <= NF; i++)
+					help[n_opts] = help[n_opts] " " $i
+				n_opts++;
+			}
+			else {
+				extra_masks[n_extra_masks++] = name
+			}
+		}
+	}
+