/* Command line option handling.
- Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+ 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 2, or (at your option) any later
+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
for more details.
You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
#ifndef GCC_OPTS_H
#define GCC_OPTS_H
-extern void decode_options (unsigned int argc, const char **argv);
-extern void add_input_filename (const char *filename);
+/* 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;
+ const char *missing_argument_error;
unsigned short back_chain;
unsigned char opt_len;
+ int neg_index;
unsigned int flags;
- int *flag_var;
- int has_set_value;
- int set_value;
+ 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
-#define CL_REPORT (1 << 23) /* Report argument with -fverbose-asm */
-#define CL_JOINED (1 << 24) /* If takes joined argument. */
-#define CL_SEPARATE (1 << 25) /* If takes a separate argument. */
-#define CL_REJECT_NEGATIVE (1 << 26) /* Reject no- form. */
-#define CL_MISSING_OK (1 << 27) /* Missing argument OK (joined). */
-#define CL_UINTEGER (1 << 28) /* Argument is an integer >=0. */
-#define CL_COMMON (1 << 29) /* Language-independent. */
+/* 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;
+
+ /* The canonical form of the option and its argument, for when it is
+ necessary to reconstruct argv elements (in particular, for
+ processing specs and passing options to subprocesses from the
+ driver). */
+ const char *canonical_option[4];
+
+ /* The number of elements in the canonical form of the option and
+ arguments; always at least 1. */
+ size_t canonical_option_num_elements;
+
+ /* 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;
+};
+
+/* Structure describing a single option-handling callback. */
+
+struct cl_option_handler_func
+{
+ /* The function called to handle the option. */
+ bool (*handler) (size_t opt_index, const char *arg, int value,
+ unsigned int lang_mask, int kind,
+ const struct cl_option_handlers *handlers);
+
+ /* The mask that must have some bit in common with the flags for the
+ option for this particular handler to be used. */
+ unsigned int mask;
+};
+
+/* Structure describing the callbacks used in handling options. */
+
+struct cl_option_handlers
+{
+ /* Callback for an unknown option to determine whether to give an
+ error for it, and possibly store information to diagnose the
+ option at a later point. Return true if an error should be
+ given, false otherwise. */
+ bool (*unknown_option_callback) (const char *opt);
+
+ /* Callback to handle, and possibly diagnose, an option for another
+ language. */
+ void (*wrong_lang_callback) (const char *text,
+ const struct cl_option *option,
+ unsigned int lang_mask);
+
+ /* Callback to call after the successful handling of any option. */
+ void (*post_handling_callback) (size_t opt_index, const char *arg,
+ int value, unsigned int mask);
+
+ /* The number of individual handlers. */
+ size_t num_handlers;
+
+ /* The handlers themselves. */
+ struct cl_option_handler_func handlers[3];
+};
+
/* Input file names. */
extern const char **in_fnames;
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 (size_t opt_index, const char *arg, int value,
+ unsigned int lang_mask, int kind,
+ const struct cl_option_handlers *handlers);
+extern void read_cmdline_option (struct cl_decoded_option *decoded,
+ unsigned int lang_mask,
+ const struct cl_option_handlers *handlers);
+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,
+ const struct cl_option_handlers *handlers);
+extern void print_ignored_options (void);
#endif
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