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-rw-r--r--scripts/kconfig/symbol.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/scripts/kconfig/symbol.c b/scripts/kconfig/symbol.c
index 2e7a048e0cfc..174b230a52b0 100644
--- a/scripts/kconfig/symbol.c
+++ b/scripts/kconfig/symbol.c
@@ -205,6 +205,16 @@ static void sym_calc_visibility(struct symbol *sym)
}
if (sym_is_choice_value(sym))
return;
+ /* defaulting to "yes" if no explicit "depends on" are given */
+ tri = yes;
+ if (sym->dir_dep.expr)
+ tri = expr_calc_value(sym->dir_dep.expr);
+ if (tri == mod)
+ tri = yes;
+ if (sym->dir_dep.tri != tri) {
+ sym->dir_dep.tri = tri;
+ sym_set_changed(sym);
+ }
tri = no;
if (sym->rev_dep.expr)
tri = expr_calc_value(sym->rev_dep.expr);
@@ -321,6 +331,14 @@ void sym_calc_value(struct symbol *sym)
}
}
calc_newval:
+ if (sym->dir_dep.tri == no && sym->rev_dep.tri != no) {
+ fprintf(stderr, "warning: (");
+ expr_fprint(sym->rev_dep.expr, stderr);
+ fprintf(stderr, ") selects %s which has unmet direct dependencies (",
+ sym->name);
+ expr_fprint(sym->dir_dep.expr, stderr);
+ fprintf(stderr, ")\n");
+ }
newval.tri = EXPR_OR(newval.tri, sym->rev_dep.tri);
}
if (newval.tri == mod && sym_get_type(sym) == S_BOOLEAN)