diff options
Diffstat (limited to 'scripts/kconfig/symbol.c')
| -rw-r--r-- | scripts/kconfig/symbol.c | 59 |
1 files changed, 57 insertions, 2 deletions
diff --git a/scripts/kconfig/symbol.c b/scripts/kconfig/symbol.c index e95718fea3..a796c95fe8 100644 --- a/scripts/kconfig/symbol.c +++ b/scripts/kconfig/symbol.c @@ -351,12 +351,16 @@ void sym_calc_value(struct symbol *sym) } calc_newval: if (sym->dir_dep.tri == no && sym->rev_dep.tri != no) { + struct expr *e; + e = expr_simplify_unmet_dep(sym->rev_dep.expr, + sym->dir_dep.expr); fprintf(stderr, "warning: ("); - expr_fprint(sym->rev_dep.expr, stderr); + expr_fprint(e, stderr); fprintf(stderr, ") selects %s which has unmet direct dependencies (", sym->name); expr_fprint(sym->dir_dep.expr, stderr); fprintf(stderr, ")\n"); + expr_free(e); } newval.tri = EXPR_OR(newval.tri, sym->rev_dep.tri); } @@ -686,7 +690,7 @@ const char *sym_get_string_default(struct symbol *sym) switch (sym->type) { case S_BOOLEAN: case S_TRISTATE: - /* The visibility imay limit the value from yes => mod */ + /* The visibility may limit the value from yes => mod */ val = EXPR_AND(expr_calc_value(prop->expr), prop->visible.tri); break; default: @@ -840,6 +844,55 @@ struct symbol *sym_find(const char *name) return symbol; } +/* + * Expand symbol's names embedded in the string given in argument. Symbols' + * name to be expanded shall be prefixed by a '$'. Unknown symbol expands to + * the empty string. + */ +const char *sym_expand_string_value(const char *in) +{ + const char *src; + char *res; + size_t reslen; + + reslen = strlen(in) + 1; + res = malloc(reslen); + res[0] = '\0'; + + while ((src = strchr(in, '$'))) { + char *p, name[SYMBOL_MAXLENGTH]; + const char *symval = ""; + struct symbol *sym; + size_t newlen; + + strncat(res, in, src - in); + src++; + + p = name; + while (isalnum(*src) || *src == '_') + *p++ = *src++; + *p = '\0'; + + sym = sym_find(name); + if (sym != NULL) { + sym_calc_value(sym); + symval = sym_get_string_value(sym); + } + + newlen = strlen(res) + strlen(symval) + strlen(src) + 1; + if (newlen > reslen) { + reslen = newlen; + res = realloc(res, reslen); + } + + strcat(res, symval); + in = src; + } + strcat(res, in); + + return res; +} + struct symbol **sym_re_search(const char *pattern) { struct symbol *sym, **sym_arr = NULL; @@ -937,6 +990,8 @@ static void sym_check_print_recursive(struct symbol *last_sym) sym = stack->sym; next_sym = stack->next ? stack->next->sym : last_sym; prop = stack->prop; + if (prop == NULL) + prop = stack->sym->prop; /* for choice values find the menu entry (used below) */ if (sym_is_choice(sym) || sym_is_choice_value(sym)) { |