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7e3465f63a
The boolean 'choice' is used to list exclusively selected config options. You must not add a dependency between choice members, because such a dependency would create an invisible entry. In the following test case, it is impossible to choose 'C'. [Test Case 1] choice prompt "Choose one, but how to choose C?" config A bool "A" config B bool "B" config C bool "C" depends on A endchoice Hence, Kconfig shows the following error message: Kconfig:1:error: recursive dependency detected! Kconfig:1: choice <choice> contains symbol C Kconfig:10: symbol C is part of choice A Kconfig:4: symbol A is part of choice <choice> For a resolution refer to Documentation/kbuild/kconfig-language.rst subsection "Kconfig recursive dependency limitations" However, Kconfig does not report anything for the following similar code: [Test Case 2] choice prompt "Choose one, but how to choose B?" config A bool "A" config B bool "B" depends on A config C bool "C" endchoice This is because menu_finalize() reparents the menu tree when an entry depends on the preceding one. With reparenting, the menu tree: choice |- A |- B \- C ... will be transformed into the following structure: choice |- A | \- B \- C Consequently, Kconfig considers only 'A' and 'C' as choice members. This behavior is awkward. The second test case should be an error too. This commit stops reparenting inside a choice. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
150 lines
3.7 KiB
C
150 lines
3.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
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*/
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#ifndef LKC_H
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#define LKC_H
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#include <assert.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "expr.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "lkc_proto.h"
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#define SRCTREE "srctree"
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#ifndef CONFIG_
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#define CONFIG_ "CONFIG_"
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#endif
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static inline const char *CONFIG_prefix(void)
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{
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return getenv( "CONFIG_" ) ?: CONFIG_;
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}
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#undef CONFIG_
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#define CONFIG_ CONFIG_prefix()
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extern int yylineno;
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void zconfdump(FILE *out);
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void zconf_starthelp(void);
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FILE *zconf_fopen(const char *name);
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void zconf_initscan(const char *name);
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void zconf_nextfile(const char *name);
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/* confdata.c */
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extern struct gstr autoconf_cmd;
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const char *conf_get_configname(void);
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void set_all_choice_values(struct symbol *csym);
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/* confdata.c and expr.c */
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static inline void xfwrite(const void *str, size_t len, size_t count, FILE *out)
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{
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assert(len != 0);
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if (fwrite(str, len, count, out) != count)
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fprintf(stderr, "Error in writing or end of file.\n");
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}
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/* util.c */
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unsigned int strhash(const char *s);
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const char *file_lookup(const char *name);
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void *xmalloc(size_t size);
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void *xcalloc(size_t nmemb, size_t size);
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void *xrealloc(void *p, size_t size);
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char *xstrdup(const char *s);
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char *xstrndup(const char *s, size_t n);
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/* lexer.l */
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int yylex(void);
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struct gstr {
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size_t len;
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char *s;
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/*
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* when max_width is not zero long lines in string s (if any) get
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* wrapped not to exceed the max_width value
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*/
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int max_width;
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};
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struct gstr str_new(void);
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void str_free(struct gstr *gs);
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void str_append(struct gstr *gs, const char *s);
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void str_printf(struct gstr *gs, const char *fmt, ...);
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char *str_get(struct gstr *gs);
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/* menu.c */
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void _menu_init(void);
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void menu_warn(struct menu *menu, const char *fmt, ...);
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struct menu *menu_add_menu(void);
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void menu_end_menu(void);
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void menu_add_entry(struct symbol *sym);
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void menu_add_dep(struct expr *dep);
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void menu_add_visibility(struct expr *dep);
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struct property *menu_add_prompt(enum prop_type type, char *prompt, struct expr *dep);
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void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep);
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void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep);
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void menu_finalize(void);
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void menu_set_type(int type);
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extern struct menu rootmenu;
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bool menu_is_empty(struct menu *menu);
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bool menu_is_visible(struct menu *menu);
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bool menu_has_prompt(struct menu *menu);
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const char *menu_get_prompt(struct menu *menu);
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struct menu *menu_get_parent_menu(struct menu *menu);
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int get_jump_key_char(void);
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struct gstr get_relations_str(struct symbol **sym_arr, struct list_head *head);
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void menu_get_ext_help(struct menu *menu, struct gstr *help);
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/* symbol.c */
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void sym_clear_all_valid(void);
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struct symbol *sym_choice_default(struct symbol *sym);
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struct property *sym_get_range_prop(struct symbol *sym);
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const char *sym_get_string_default(struct symbol *sym);
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struct symbol *sym_check_deps(struct symbol *sym);
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struct symbol *prop_get_symbol(struct property *prop);
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static inline tristate sym_get_tristate_value(struct symbol *sym)
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{
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return sym->curr.tri;
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}
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static inline struct symbol *sym_get_choice_value(struct symbol *sym)
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{
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return (struct symbol *)sym->curr.val;
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}
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static inline bool sym_is_choice(struct symbol *sym)
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{
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return sym->flags & SYMBOL_CHOICE ? true : false;
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}
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static inline bool sym_is_choice_value(struct symbol *sym)
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{
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return sym->flags & SYMBOL_CHOICEVAL ? true : false;
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}
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static inline bool sym_is_optional(struct symbol *sym)
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{
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return sym->flags & SYMBOL_OPTIONAL ? true : false;
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}
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static inline bool sym_has_value(struct symbol *sym)
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{
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return sym->flags & SYMBOL_DEF_USER ? true : false;
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}
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#ifdef __cplusplus
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}
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#endif
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#endif /* LKC_H */
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