kconfig: error out if recursive dependencies are found
Sample:
config FOO
bool "This is foo"
depends on BAR
config BAR
bool "This is bar"
depends on FOO
This will result in following error message:
error: found recursive dependency: FOO -> BAR -> FOO
And will then exit with exit code equal 1 so make will stop.
Inspired by patch from: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Adrian Bunk <bunk@stusta.de>
Cc: Roman Zippel <zippel@linux-m68k.org>
diff --git a/scripts/kconfig/zconf.y b/scripts/kconfig/zconf.y
index 04a5864..92eb02b 100644
--- a/scripts/kconfig/zconf.y
+++ b/scripts/kconfig/zconf.y
@@ -501,9 +501,11 @@
}
menu_finalize(&rootmenu);
for_all_symbols(i, sym) {
- sym_check_deps(sym);
+ if (sym_check_deps(sym))
+ zconfnerrs++;
}
-
+ if (zconfnerrs)
+ exit(1);
sym_set_change_count(1);
}
