system: add help entry to "none" init system

It can be a little bit misleading to have no init system...

Add a comment that states the user has to provide his own init system,
either via a package or a rootfs overlay.

It is expected that such a user will know what to provide, so we don't
really need to specify that it should be /init or /sbin/init or any
arbitrary executable pointed to by the kernel command line "init=..."
or anything else...

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

diff --git a/system/Config.in b/system/Config.in
index 2e14971ba79c78a091e6d1b5466acc54c51b242d..9441467435184fb19469aa7a1ede5556597686d4 100644 (file)
--- a/system/Config.in
+++ b/system/Config.in
@@ -101,6 +101,10 @@ comment "systemd needs (e)glibc toolchain, headers >= 3.10"
 
 config BR2_INIT_NONE
        bool "None"
+       help
+         Buildroot will not install any init system. You will
+         have to provide your own, either with a new package
+         or with a rootfs-overlay.
 
 endchoice