1/* Command line option handling. 2 Copyright (C) 2002, 2003, 2004, 2005, 2007, 2008 3 Free Software Foundation, Inc. 4 5This file is part of GCC. 6 7GCC is free software; you can redistribute it and/or modify it under 8the terms of the GNU General Public License as published by the Free 9Software Foundation; either version 3, or (at your option) any later 10version. 11 12GCC is distributed in the hope that it will be useful, but WITHOUT ANY 13WARRANTY; without even the implied warranty of MERCHANTABILITY or 14FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15for more details. 16 17You should have received a copy of the GNU General Public License 18along with GCC; see the file COPYING3. If not see 19<http://www.gnu.org/licenses/>. */ 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 int neg_index; 50 unsigned int flags; 51 void *flag_var; 52 enum cl_var_type var_type; 53 int var_value; 54}; 55 56/* Records that the state of an option consists of SIZE bytes starting 57 at DATA. DATA might point to CH in some cases. */ 58struct cl_option_state { 59 const void *data; 60 size_t size; 61 char ch; 62}; 63 64extern const struct cl_option cl_options[]; 65extern const unsigned int cl_options_count; 66extern const char *const lang_names[]; 67extern const unsigned int cl_lang_count; 68 69#define CL_PARAMS (1 << 17) /* Fake entry. Used to display --param info with --help. */ 70#define CL_WARNING (1 << 18) /* Enables an (optional) warning message. */ 71#define CL_OPTIMIZATION (1 << 19) /* Enables an (optional) optimization. */ 72#define CL_TARGET (1 << 20) /* Target-specific option. */ 73#define CL_COMMON (1 << 21) /* Language-independent. */ 74 75#define CL_MIN_OPTION_CLASS CL_PARAMS 76#define CL_MAX_OPTION_CLASS CL_COMMON 77 78/* From here on the bits describe attributes of the options. 79 Before this point the bits have described the class of the option. 80 This distinction is important because --help will not list options 81 which only have these higher bits set. */ 82 83#define CL_SAVE (1 << 22) /* Target-specific option for attribute. */ 84#define CL_DISABLED (1 << 23) /* Disabled in this configuration. */ 85#define CL_REPORT (1 << 24) /* Report argument with -fverbose-asm */ 86#define CL_JOINED (1 << 25) /* If takes joined argument. */ 87#define CL_SEPARATE (1 << 26) /* If takes a separate argument. */ 88#define CL_REJECT_NEGATIVE (1 << 27) /* Reject no- form. */ 89#define CL_MISSING_OK (1 << 28) /* Missing argument OK (joined). */ 90#define CL_UINTEGER (1 << 29) /* Argument is an integer >=0. */ 91#define CL_UNDOCUMENTED (1 << 30) /* Do not output with --help. */ 92 93/* Input file names. */ 94 95extern const char **in_fnames; 96 97/* The count of input filenames. */ 98 99extern unsigned num_in_fnames; 100 101size_t find_opt (const char *input, int lang_mask); 102extern void prune_options (int *argcp, char ***argvp); 103extern void decode_options (unsigned int argc, const char **argv); 104extern int option_enabled (int opt_idx); 105extern bool get_option_state (int, struct cl_option_state *); 106extern void set_option (const struct cl_option *, int, const char *); 107 108extern void enable_warning_as_error (const char *arg, int value, 109 unsigned int lang_mask); 110extern void print_ignored_options (void); 111#endif 112