gcc/opts.sh

   1 #!/bin/sh
   2 #
   3 #  Copyright (C) 2003 Free Software Foundation, Inc.
   4 #  Contributed by Neil Booth, May 2003.
   5 #
   6 # This program is free software; you can redistribute it and/or modify it
   7 # under the terms of the GNU General Public License as published by the
   8 # Free Software Foundation; either version 2, or (at your option) any
   9 # later version.
  10 #
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program; if not, write to the Free Software
  18 # Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  19 #
  20 # Usage: opts.sh outfile.c outfile.h file1.opt [file2.opt, ...]
  21
  22 # Always operate in the C locale.
  23 LANG=C
  24 LANGUAGE=C
  25 LC_ALL=C
  26 export LANG LANGUAGE LC_ALL
  27
  28 # Set AWK if environment has not already set it.
  29 AWK=${AWK-awk}
  30
  31 SORT=sort               # Could be /bin/sort or /usr/bin/sort
  32
  33 C_FILE=$1; shift
  34 H_FILE=$1; shift
  35
  36 cat "$@" | ${AWK} '
  37         BEGIN{ RS=""; FS="\n" }
  38         # Ignore comments and blank lines
  39         /^[ \t]*(;|$)/  { next }
  40         /^[^ \t]/       { gsub ("\n", "\034", $0); print }
  41 ' | ${SORT} | ${AWK} '
  42     function switch_flags (langs,   flags)
  43     {
  44         langs = ":" langs ":"
  45         gsub( " ", ":", langs)
  46         flags = "0"
  47         if (langs ~ ":C:") flags = flags " | CL_C"
  48         if (langs ~ ":ObjC:") flags = flags " | CL_OBJC"
  49         if (langs ~ ":C\\+\\+:") flags = flags " | CL_CXX"
  50         if (langs ~ ":ObjC\\+\\+:") flags = flags " | CL_OBJCXX"
  51         if (langs ~ ":Joined:") flags = flags " | CL_JOINED"
  52         if (langs ~ ":Separate:") flags = flags " | CL_SEPARATE"
  53         if (langs ~ ":RejectNegative:") flags = flags " | CL_REJECT_NEGATIVE"
  54         sub( "^0 \\| ", "", flags )
  55         return flags
  56     }
  57
  58     BEGIN {
  59         c_file = "'${C_FILE}'"
  60         h_file = "'${H_FILE}'"
  61         FS = "\034"
  62         print "/* This file is auto-generated by opts.sh.  */\n" > h_file
  63         print "/* This file is auto-generated by opts.sh.  */\n" > c_file
  64         print "struct cl_option\n{"                     >> h_file
  65         print "  const char *opt_text;"                 >> h_file
  66         print "  unsigned char opt_len;"                >> h_file
  67         print "  unsigned char flags;"                  >> h_file
  68         print "};\n\n"                                  >> h_file
  69         print "extern const struct cl_option cl_options[];\n" >> h_file
  70         print "enum opt_code\n{"                        >> h_file
  71         print "#include \"options.h\""                  >> c_file
  72         print "#include \"opts.h\"\n"                   >> c_file
  73         print "const struct cl_option cl_options[] =\n{" >> c_file
  74     }
  75
  76     {
  77         opt = $1
  78         gsub ( "[^A-Za-z0-9]", "_", opt)
  79         s = substr ("                                  ", length (opt))
  80         enum = "OPT_" opt
  81         printf ("  %s,%s/* -%s */\n", enum, s, $1 )     >> h_file
  82         printf ("  { \"%s\", %u, %s },\n", $1, \
  83             length ($1), switch_flags($2))              >> c_file
  84     }
  85
  86     END {
  87         print "  N_OPTS\n};"                            >> h_file
  88         print "};"                                      >> c_file
  89     }
  90 '