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/* Command line option handling.
Copyright (C) 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010
Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#ifndef GCC_OPTS_H
#define GCC_OPTS_H
/* Specifies how a switch's VAR_VALUE relates to its FLAG_VAR. */
enum cl_var_type {
/* The switch is enabled when FLAG_VAR is nonzero. */
CLVC_BOOLEAN,
/* The switch is enabled when FLAG_VAR == VAR_VALUE. */
CLVC_EQUAL,
/* The switch is enabled when VAR_VALUE is not set in FLAG_VAR. */
CLVC_BIT_CLEAR,
/* The switch is enabled when VAR_VALUE is set in FLAG_VAR. */
CLVC_BIT_SET,
/* The switch takes a string argument and FLAG_VAR points to that
argument. */
CLVC_STRING
};
struct cl_option
{
const char *opt_text;
const char *help;
unsigned short back_chain;
unsigned char opt_len;
int neg_index;
unsigned int flags;
void *flag_var;
enum cl_var_type var_type;
int var_value;
};
/* Records that the state of an option consists of SIZE bytes starting
at DATA. DATA might point to CH in some cases. */
struct cl_option_state {
const void *data;
size_t size;
char ch;
};
extern const struct cl_option cl_options[];
extern const unsigned int cl_options_count;
extern const char *const lang_names[];
extern const unsigned int cl_lang_count;
#define CL_PARAMS (1 << 17) /* Fake entry. Used to display --param info with --help. */
#define CL_WARNING (1 << 18) /* Enables an (optional) warning message. */
#define CL_OPTIMIZATION (1 << 19) /* Enables an (optional) optimization. */
#define CL_TARGET (1 << 20) /* Target-specific option. */
#define CL_COMMON (1 << 21) /* Language-independent. */
#define CL_MIN_OPTION_CLASS CL_PARAMS
#define CL_MAX_OPTION_CLASS CL_COMMON
/* From here on the bits describe attributes of the options.
Before this point the bits have described the class of the option.
This distinction is important because --help will not list options
which only have these higher bits set. */
#define CL_SAVE (1 << 22) /* Target-specific option for attribute. */
#define CL_DISABLED (1 << 23) /* Disabled in this configuration. */
#define CL_REPORT (1 << 24) /* Report argument with -fverbose-asm */
#define CL_JOINED (1 << 25) /* If takes joined argument. */
#define CL_SEPARATE (1 << 26) /* If takes a separate argument. */
#define CL_REJECT_NEGATIVE (1 << 27) /* Reject no- form. */
#define CL_MISSING_OK (1 << 28) /* Missing argument OK (joined). */
#define CL_UINTEGER (1 << 29) /* Argument is an integer >=0. */
#define CL_UNDOCUMENTED (1 << 30) /* Do not output with --help. */
/* Possible ways in which a command-line option may be erroneous.
These do not include not being known at all; an option index of
OPT_SPECIAL_unknown is used for that. */
#define CL_ERR_DISABLED (1 << 0) /* Disabled in this configuration. */
#define CL_ERR_MISSING_ARG (1 << 1) /* Argument required but missing. */
#define CL_ERR_WRONG_LANG (1 << 2) /* Option for wrong language. */
#define CL_ERR_UINT_ARG (1 << 3) /* Bad unsigned integer argument. */
/* Structure describing the result of decoding an option. */
struct cl_decoded_option
{
/* The index of this option, or an OPT_SPECIAL_* value for
non-options and unknown options. */
size_t opt_index;
/* The string argument, or NULL if none. For OPT_SPECIAL_* cases,
the option or non-option command-line argument. */
const char *arg;
/* The original text of option plus arguments, with separate argv
elements concatenated into one string with spaces separating
them. This is for such uses as diagnostics and
-frecord-gcc-switches. */
const char *orig_option_with_args_text;
/* For a boolean option, 1 for the true case and 0 for the "no-"
case. For an unsigned integer option, the value of the
argument. 1 in all other cases. */
int value;
/* Any flags describing errors detected in this option. */
int errors;
};
/* Input file names. */
extern const char **in_fnames;
/* The count of input filenames. */
extern unsigned num_in_fnames;
size_t find_opt (const char *input, int lang_mask);
extern int integral_argument (const char *arg);
extern void decode_cmdline_options_to_array (unsigned int argc,
const char **argv,
unsigned int lang_mask,
struct cl_decoded_option **decoded_options,
unsigned int *decoded_options_count);
extern void prune_options (int *argcp, char ***argvp);
extern void decode_options (unsigned int argc, const char **argv,
struct cl_decoded_option **decoded_options,
unsigned int *decoded_options_count);
extern int option_enabled (int opt_idx);
extern bool get_option_state (int, struct cl_option_state *);
extern void set_option (int opt_index, int value, const char *arg, int);
bool handle_option (int opt_index, int value, const char *arg,
unsigned int lang_mask, int kind);
extern void register_warning_as_error_callback (void (*callback) (int));
extern void enable_warning_as_error (const char *arg, int value,
unsigned int lang_mask);
extern void print_ignored_options (void);
#endif
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