fixincludes/fixopts.c

   1 /* Handle options that are passed from environment variables.
   2
   3    Copyright (C) 2004, 2009 Free Software Foundation, Inc.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 3, or (at your option)
  10 any later version.
  11
  12 GCC is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING3.  If not see
  19 <http://www.gnu.org/licenses/>.  */
  20
  21 #include "fixlib.h"
  22
  23 #define _ENV_(v,m,n,t)   tCC* v = NULL;
  24 ENV_TABLE
  25 #undef _ENV_
  26
  27 void
  28 initialize_opts (void)
  29 {
  30   static const char var_not_found[] =
  31 #ifndef __STDC__
  32     "fixincl ERROR:  %s environment variable not defined\n"
  33 #else
  34     "fixincl ERROR:  %s environment variable not defined\n"
  35     "each of these must be defined:\n"
  36 # define _ENV_(vv,mm,nn,tt) "\t" nn "  - " tt "\n"
  37   ENV_TABLE
  38 # undef _ENV_
  39 #endif
  40     ;
  41
  42 #define _ENV_(v,m,n,t)   { tSCC var[] = n;  \
  43   v = getenv (var); if (m && (v == NULL)) { \
  44   fprintf (stderr, var_not_found, var);     \
  45   exit (EXIT_FAILURE); } }
  46
  47 ENV_TABLE
  48
  49 #undef _ENV_
  50 }