776dc15d38
2004-06-18 Kelley Cook <kcook@gcc.gnu.org> * opts.sh: Delete. Break out generated code to next four files. * opt-gather.awk: New file. * optc-gen.awk: New file. * opth-gen.awk: New file. * opt-functions.awk: New common file. * Makefile.in: Update for above. * configure.ac: Update comment. * configure: Regenerate. From-SVN: r83333
129 lines
3.2 KiB
Awk
129 lines
3.2 KiB
Awk
# Copyright (C) 2003,2004 Free Software Foundation, Inc.
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# Contributed by Kelley Cook, June 2004.
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# Original code from Neil Booth, May 2003.
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#
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# This program is free software; you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by the
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# Free Software Foundation; either version 2, or (at your option) any
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# later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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# This Awk script reads in the option records generated from
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# opt-gather.awk, combines the flags of duplicate options and generates a
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# C header file.
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#
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# This program uses functions from opt-functions.awk
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# Usage: awk -f opt-functions.awk -f opth-gen.awk < inputfile > options.h
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BEGIN {
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n_opts = 0
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n_langs = 0
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quote = "\042"
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comma = ","
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FS=SUBSEP
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}
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# Collect the text and flags of each option into an array
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{
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if ($1 == "Language") {
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langs[n_langs] = $2
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n_langs++;
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}
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else {
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opts[n_opts] = $1
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flags[n_opts] = $2
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help[n_opts] = $3
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n_opts++;
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}
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}
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# Dump out an enumeration into a .h file.
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# Combine the flags of duplicate options.
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END {
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print "/* This file is auto-generated by opts.sh. */"
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print ""
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print "#ifndef OPTIONS_H"
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print "#define OPTIONS_H"
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print ""
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for (i = 0; i < n_opts; i++) {
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name = var_name(flags[i]);
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if (name == "")
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continue;
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print "/* Set by -" opts[i] "."
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print " " help[i] " */"
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print "extern int " name ";"
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print ""
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}
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for (i = 0; i < n_langs; i++) {
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macros[i] = "CL_" langs[i]
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gsub( "[^A-Za-z0-9_]", "X", macros[i] )
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s = substr(" ", length (macros[i]))
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print "#define " macros[i] s " (1 << " i ")"
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}
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print ""
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print "enum opt_code"
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print "{"
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for (i = 0; i < n_opts; i++)
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back_chain[i] = "N_OPTS";
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for (i = 0; i < n_opts; i++) {
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# Combine the flags of identical switches. Switches
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# appear many times if they are handled by many front
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# ends, for example.
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while( i + 1 != n_opts && opts[i] == opts[i + 1] ) {
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flags[i + 1] = flags[i] " " flags[i + 1];
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i++;
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}
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len = length (opts[i]);
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enum = "OPT_" opts[i]
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if (opts[i] == "finline-limit=")
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enum = enum "eq"
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gsub ("[^A-Za-z0-9]", "_", enum)
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# If this switch takes joined arguments, back-chain all
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# subsequent switches to it for which it is a prefix. If
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# a later switch S is a longer prefix of a switch T, T
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# will be back-chained to S in a later iteration of this
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# for() loop, which is what we want.
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if (flags[i] ~ "Joined") {
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for (j = i + 1; j < n_opts; j++) {
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if (substr (opts[j], 1, len) != opts[i])
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break;
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back_chain[j] = enum;
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}
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}
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s = substr(" ", length (opts[i]))
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if (i + 1 == n_opts)
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comma = ""
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if (help[i] == "")
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hlp = "0"
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else
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hlp = "N_(\"" help[i] "\")";
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print " " enum "," s "/* -" opts[i] " */"
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}
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print " N_OPTS"
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print "};"
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print ""
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print "#endif /* OPTIONS_H */"
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}
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