system/Config.in: add new init - openrc

This is very basic settings for openrc init.

* system/Config.in
  Allows to select openrc as init system (which auto selects
  openrc-skeleton and openrc package).

* package/ifupdown-scripts/Config.in
  openrc has its own service to bring up/down interfaces, so
  ifupdown-scripts should not be enabled when openrc is enabled to
  prevent service clash.

Signed-off-by: Michał Łyszczek <michal.lyszczek@bofc.pl>
[Thomas: take into account the !BR2_STATIC_LIBS dependency]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/ifupdown-scripts/Config.in

@@ -1,7 +1,7 @@
 config BR2_PACKAGE_IFUPDOWN_SCRIPTS
 	bool "ifupdown scripts"
 	default y if BR2_ROOTFS_SKELETON_DEFAULT
-	depends on !BR2_PACKAGE_SYSTEMD_NETWORKD
+	depends on !BR2_PACKAGE_SYSTEMD_NETWORKD && !BR2_PACKAGE_OPENRC
 	help
 	  Set of scripts used by ifupdown (either the standalone one,
 	  or the busybox one) to bring network up, or tear it down.

package/openrc/Config.in

@@ -2,6 +2,7 @@ config BR2_PACKAGE_OPENRC
 	bool "openrc"
 	depends on BR2_USE_MMU # fork()
 	depends on !BR2_STATIC_LIBS
+	depends on BR2_INIT_OPENRC
 	select BR2_PACKAGE_NCURSES
 	help
 	  Init that works on top of pid 1 (for example
@@ -21,4 +22,5 @@ config BR2_PACKAGE_OPENRC
 
 comment "openrc needs a toolchain w/ dynamic library"
 	depends on BR2_USE_MMU
+	depends on BR2_INIT_OPENRC
 	depends on BR2_STATIC_LIBS

system/Config.in

@@ -11,6 +11,7 @@ config BR2_ROOTFS_SKELETON_DEFAULT
 	bool "default target skeleton"
 	select BR2_PACKAGE_SKELETON_INIT_SYSV if BR2_INIT_SYSV
 	select BR2_PACKAGE_SKELETON_INIT_SYSV if BR2_INIT_BUSYBOX
+	select BR2_PACKAGE_SKELETON_INIT_OPENRC if BR2_INIT_OPENRC
 	select BR2_PACKAGE_SKELETON_INIT_SYSTEMD if BR2_INIT_SYSTEMD
 	select BR2_PACKAGE_SKELETON_INIT_NONE if BR2_INIT_NONE
 	help
@@ -98,6 +99,16 @@ config BR2_INIT_SYSV
 	select BR2_PACKAGE_INITSCRIPTS
 	select BR2_PACKAGE_SYSVINIT
 
+config BR2_INIT_OPENRC
+	bool "OpenRC"
+	depends on BR2_USE_MMU
+	depends on !BR2_STATIC_LIBS
+	select BR2_PACKAGE_OPENRC
+
+comment "openrc needs a toolchain w/ dynamic library"
+	depends on BR2_USE_MMU
+	depends on BR2_STATIC_LIBS
+
 # In Buildroot, we decided not to support a split-usr when systemd is
 # used as an init system. This is a design decision, not a systemd
 # issue. Thus the select is with BR2_INIT_SYSTEMD (below) rather than