1/* Command line option handling.
2   Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
3
4This file is part of GCC.
5
6GCC is free software; you can redistribute it and/or modify it under
7the terms of the GNU General Public License as published by the Free
8Software Foundation; either version 2, or (at your option) any later
9version.
10
11GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12WARRANTY; without even the implied warranty of MERCHANTABILITY or
13FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14for more details.
15
16You should have received a copy of the GNU General Public License
17along with GCC; see the file COPYING.  If not, write to the Free
18Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
1902110-1301, 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.  */
25enum 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
43struct 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.  */
57struct cl_option_state {
58  const void *data;
59  size_t size;
60  char ch;
61};
62
63extern const struct cl_option cl_options[];
64extern const unsigned int cl_options_count;
65extern 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
80extern const char **in_fnames;
81
82/* The count of input filenames.  */
83
84extern unsigned num_in_fnames;
85
86extern void decode_options (unsigned int argc, const char **argv);
87extern int option_enabled (int opt_idx);
88extern bool get_option_state (int, struct cl_option_state *);
89
90#endif
91