1 /* Command line option handling. 2 Copyright (C) 2002, 2003, 2004, 2005, 2007, 2008 3 Free Software Foundation, Inc. 4 5 This file is part of GCC. 6 7 GCC is free software; you can redistribute it and/or modify it under 8 the terms of the GNU General Public License as published by the Free 9 Software Foundation; either version 3, or (at your option) any later 10 version. 11 12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 13 WARRANTY; without even the implied warranty of MERCHANTABILITY or 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15 for more details. 16 17 You should have received a copy of the GNU General Public License 18 along 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. */ 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 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. */ 58 struct cl_option_state { 59 const void *data; 60 size_t size; 61 char ch; 62 }; 63 64 extern const struct cl_option cl_options[]; 65 extern const unsigned int cl_options_count; 66 extern const char *const lang_names[]; 67 extern 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 95 extern const char **in_fnames; 96 97 /* The count of input filenames. */ 98 99 extern unsigned num_in_fnames; 100 101 size_t find_opt (const char *input, int lang_mask); 102 extern void prune_options (int *argcp, char ***argvp); 103 extern void decode_options (unsigned int argc, const char **argv); 104 extern int option_enabled (int opt_idx); 105 extern bool get_option_state (int, struct cl_option_state *); 106 extern void set_option (const struct cl_option *, int, const char *); 107 108 extern void enable_warning_as_error (const char *arg, int value, 109 unsigned int lang_mask); 110 extern void print_ignored_options (void); 111 #endif 112