gcc/opts.h

   1 /* Command line option handling.
   2    Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
   3
   4 This file is part of GCC.
   5
   6 GCC is free software; you can redistribute it and/or modify it under
   7 the terms of the GNU General Public License as published by the Free
   8 Software Foundation; either version 2, or (at your option) any later
   9 version.
  10
  11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14 for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GCC; see the file COPYING.  If not, write to the Free
  18 Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
  19 02110-1301, USA.  */
  20
  21 #ifndef GCC_OPTS_H
  22 #define GCC_OPTS_H
  23
  24 /* Specifies how a switch's VAR_VALUE relates to its FLAG_VAR.  */
  25 enum cl_var_type {
  26   /* The switch is enabled when FLAG_VAR is nonzero.  */
  27   CLVC_BOOLEAN,
  28
  29   /* The switch is enabled when FLAG_VAR == VAR_VALUE.  */
  30   CLVC_EQUAL,
  31
  32   /* The switch is enabled when VAR_VALUE is not set in FLAG_VAR.  */
  33   CLVC_BIT_CLEAR,
  34
  35   /* The switch is enabled when VAR_VALUE is set in FLAG_VAR.  */
  36   CLVC_BIT_SET,
  37
  38   /* The switch takes a string argument and FLAG_VAR points to that
  39      argument.  */
  40   CLVC_STRING
  41 };
  42
  43 struct cl_option
  44 {
  45   const char *opt_text;
  46   const char *help;
  47   unsigned short back_chain;
  48   unsigned char opt_len;
  49   unsigned int flags;
  50   void *flag_var;
  51   enum cl_var_type var_type;
  52   int var_value;
  53 };
  54
  55 /* Records that the state of an option consists of SIZE bytes starting
  56    at DATA.  DATA might point to CH in some cases.  */
  57 struct cl_option_state {
  58   const void *data;
  59   size_t size;
  60   char ch;
  61 };
  62
  63 extern const struct cl_option cl_options[];
  64 extern const unsigned int cl_options_count;
  65 extern const char *const lang_names[];
  66
  67 #define CL_DISABLED             (1 << 21) /* Disabled in this configuration.  */
  68 #define CL_TARGET               (1 << 22) /* Target-specific option.  */
  69 #define CL_REPORT               (1 << 23) /* Report argument with -fverbose-asm  */
  70 #define CL_JOINED               (1 << 24) /* If takes joined argument.  */
  71 #define CL_SEPARATE             (1 << 25) /* If takes a separate argument.  */
  72 #define CL_REJECT_NEGATIVE      (1 << 26) /* Reject no- form.  */
  73 #define CL_MISSING_OK           (1 << 27) /* Missing argument OK (joined).  */
  74 #define CL_UINTEGER             (1 << 28) /* Argument is an integer >=0.  */
  75 #define CL_COMMON               (1 << 29) /* Language-independent.  */
  76 #define CL_UNDOCUMENTED         (1 << 30) /* Do not output with --help.  */
  77
  78 /* Input file names.  */
  79
  80 extern const char **in_fnames;
  81
  82 /* The count of input filenames.  */
  83
  84 extern unsigned num_in_fnames;
  85
  86 extern void decode_options (unsigned int argc, const char **argv);
  87 extern int option_enabled (int opt_idx);
  88 extern bool get_option_state (int, struct cl_option_state *);
  89
  90 #endif