Commit f498926c authored by Masahiro Yamada's avatar Masahiro Yamada

kconfig: improve the recursive dependency report

This commit improves the messages of the recursive dependency.
Currently, sym->dir_dep.expr is not checked.  Hence, any dependency
in property visibility is regarded as the dependency of the symbol.

[Test Code 1]

  config A
          bool "a"
          depends on B

  config B
          bool "b"
          depends on A

[Test Code 2]

  config A
          bool "a" if B

  config B
          bool "b"
          depends on A

For both cases above, the same message is displayed:

        symbol B depends on A
        symbol A depends on B

This commit changes the message for the latter, like this:

        symbol B depends on A
        symbol A prompt is visible depending on B

Also, 'select' and 'imply' are distinguished.
Signed-off-by: default avatarMasahiro Yamada <yamada.masahiro@socionext.com>
Tested-by: default avatarDirk Gouders <dirk@gouders.net>
parent 5e8c5299
......@@ -1011,7 +1011,7 @@ static struct dep_stack {
struct dep_stack *prev, *next;
struct symbol *sym;
struct property *prop;
struct expr *expr;
struct expr **expr;
} *check_top;
static void dep_stack_insert(struct dep_stack *stack, struct symbol *sym)
......@@ -1076,31 +1076,42 @@ static void sym_check_print_recursive(struct symbol *last_sym)
fprintf(stderr, "%s:%d:error: recursive dependency detected!\n",
prop->file->name, prop->lineno);
if (stack->expr) {
fprintf(stderr, "%s:%d:\tsymbol %s %s value contains %s\n",
prop->file->name, prop->lineno,
if (sym_is_choice(sym)) {
fprintf(stderr, "%s:%d:\tchoice %s contains symbol %s\n",
menu->file->name, menu->lineno,
sym->name ? sym->name : "<choice>",
prop_get_type_name(prop->type),
next_sym->name ? next_sym->name : "<choice>");
} else if (stack->prop) {
} else if (sym_is_choice_value(sym)) {
fprintf(stderr, "%s:%d:\tsymbol %s is part of choice %s\n",
menu->file->name, menu->lineno,
sym->name ? sym->name : "<choice>",
next_sym->name ? next_sym->name : "<choice>");
} else if (stack->expr == &sym->dir_dep.expr) {
fprintf(stderr, "%s:%d:\tsymbol %s depends on %s\n",
prop->file->name, prop->lineno,
sym->name ? sym->name : "<choice>",
next_sym->name ? next_sym->name : "<choice>");
} else if (sym_is_choice(sym)) {
fprintf(stderr, "%s:%d:\tchoice %s contains symbol %s\n",
menu->file->name, menu->lineno,
} else if (stack->expr == &sym->rev_dep.expr) {
fprintf(stderr, "%s:%d:\tsymbol %s is selected by %s\n",
prop->file->name, prop->lineno,
sym->name ? sym->name : "<choice>",
next_sym->name ? next_sym->name : "<choice>");
} else if (sym_is_choice_value(sym)) {
fprintf(stderr, "%s:%d:\tsymbol %s is part of choice %s\n",
menu->file->name, menu->lineno,
} else if (stack->expr == &sym->implied.expr) {
fprintf(stderr, "%s:%d:\tsymbol %s is implied by %s\n",
prop->file->name, prop->lineno,
sym->name ? sym->name : "<choice>",
next_sym->name ? next_sym->name : "<choice>");
} else if (stack->expr) {
fprintf(stderr, "%s:%d:\tsymbol %s %s value contains %s\n",
prop->file->name, prop->lineno,
sym->name ? sym->name : "<choice>",
prop_get_type_name(prop->type),
next_sym->name ? next_sym->name : "<choice>");
} else {
fprintf(stderr, "%s:%d:\tsymbol %s is selected or implied by %s\n",
fprintf(stderr, "%s:%d:\tsymbol %s %s is visible depending on %s\n",
prop->file->name, prop->lineno,
sym->name ? sym->name : "<choice>",
prop_get_type_name(prop->type),
next_sym->name ? next_sym->name : "<choice>");
}
}
......@@ -1157,14 +1168,23 @@ static struct symbol *sym_check_sym_deps(struct symbol *sym)
dep_stack_insert(&stack, sym);
stack.expr = &sym->dir_dep.expr;
sym2 = sym_check_expr_deps(sym->dir_dep.expr);
if (sym2)
goto out;
stack.expr = &sym->rev_dep.expr;
sym2 = sym_check_expr_deps(sym->rev_dep.expr);
if (sym2)
goto out;
stack.expr = &sym->implied.expr;
sym2 = sym_check_expr_deps(sym->implied.expr);
if (sym2)
goto out;
stack.expr = NULL;
for (prop = sym->prop; prop; prop = prop->next) {
if (prop->type == P_CHOICE || prop->type == P_SELECT ||
prop->type == P_IMPLY)
......@@ -1175,7 +1195,7 @@ static struct symbol *sym_check_sym_deps(struct symbol *sym)
break;
if (prop->type != P_DEFAULT || sym_is_choice(sym))
continue;
stack.expr = prop->expr;
stack.expr = &prop->expr;
sym2 = sym_check_expr_deps(prop->expr);
if (sym2)
break;
......
Kconfig:11:error: recursive dependency detected!
Kconfig:11: symbol B is selected or implied by B
Kconfig:11: symbol B is selected by B
For a resolution refer to Documentation/kbuild/kconfig-language.txt
subsection "Kconfig recursive dependency limitations"
......@@ -15,14 +15,14 @@ For a resolution refer to Documentation/kbuild/kconfig-language.txt
subsection "Kconfig recursive dependency limitations"
Kconfig:32:error: recursive dependency detected!
Kconfig:32: symbol D2 is selected or implied by D1
Kconfig:32: symbol D2 is selected by D1
Kconfig:27: symbol D1 depends on D2
For a resolution refer to Documentation/kbuild/kconfig-language.txt
subsection "Kconfig recursive dependency limitations"
Kconfig:37:error: recursive dependency detected!
Kconfig:37: symbol E1 depends on E2
Kconfig:42: symbol E2 is selected or implied by E1
Kconfig:42: symbol E2 is implied by E1
For a resolution refer to Documentation/kbuild/kconfig-language.txt
subsection "Kconfig recursive dependency limitations"
......
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