| /* Control warning output in GNU Make. |
| Copyright (C) 2023-2025 Free Software Foundation, Inc. |
| This file is part of GNU Make. |
| |
| GNU Make 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 of the License, or (at your option) any later |
| version. |
| |
| GNU Make 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 |
| this program. If not, see <https://www.gnu.org/licenses/>. */ |
| |
| /* Types of warnings we can show. |
| These can be rearranged but the first value must be 0. */ |
| enum warning_type |
| { |
| wt_circular_dep = 0, /* A target depends on itself. */ |
| wt_invalid_ref, /* Reference an invalid variable name. */ |
| wt_invalid_var, /* Assign to an invalid variable name. */ |
| wt_undefined_var, /* Reference an undefined variable name. */ |
| wt_max |
| }; |
| |
| /* Action taken for a given warning. Unset must be 0. */ |
| enum warning_action |
| { |
| w_unset = 0, |
| w_ignore, |
| w_warn, |
| w_error |
| }; |
| |
| struct warning_data |
| { |
| enum warning_action global; /* Global setting. */ |
| enum warning_action actions[wt_max]; /* Action for each warning type. */ |
| }; |
| |
| /* Actions taken for each warning. */ |
| extern enum warning_action warnings[wt_max]; |
| |
| /* Get the current action for a given warning. */ |
| #define warn_get(_w) (warnings[_w]) |
| |
| /* Set the current actin for a given warning. Can't use w_unset here. |
| This should only be used for temporary resetting of warnings. */ |
| #define warn_set(_w,_f) do{ warnings[_w] = (_f); }while(0) |
| |
| /* True if we should check for the warning in the first place. */ |
| #define warn_check(_w) (warn_get (_w) > w_ignore) |
| |
| /* Check if the warning is ignored. */ |
| #define warn_ignored(_w) (warn_get (_w) == w_ignore) |
| |
| /* Check if the warning is in "warn" mode. */ |
| #define warn_warned(_w) (warn_get (_w) == w_warn) |
| |
| /* Check if the warning is in "error" mode. */ |
| #define warn_error(_w) (warn_get (_w) == w_error) |
| |
| void warn_init (void); |
| void decode_warn_actions (const char *value, const floc *flocp); |
| char *encode_warn_flag (char *fp); |
| |
| void warn_get_vardata (struct warning_data *data); |
| void warn_set_vardata (const struct warning_data *data); |
| |
| #define warning(_t,_f,_m) \ |
| do{ \ |
| if (warn_check (_t)) \ |
| { \ |
| char *_a = xstrdup (_m); \ |
| if (warn_error (_t)) \ |
| fatal (_f, strlen (_a), "%s", _a); \ |
| error (_f, strlen (_a), _("warning: %s"), _a); \ |
| free (_a); \ |
| } \ |
| }while(0) |
