[OE-core] [oe-core][PATCH 1/2] defaultsetup.conf: enable select init manager

[Adrian Bunk]

On Thu, Jul 04, 2019 at 09:45:19PM +0800, kai.kang at windriver.com wrote:
> From: Kai Kang <kai.kang at windriver.com>
> 
> Introduce a new variable INIT_MANAGER and create 3 init-manager-*.inc
> files to configure init manager settings. Available values of
> INIT_MANAGER are sysvinit, systemd and mdev-busybox. 'sysvinit' is set
> by default for compatibility.
>...
> --- a/meta/conf/distro/defaultsetup.conf
> +++ b/meta/conf/distro/defaultsetup.conf
> @@ -23,3 +23,6 @@ PACKAGE_CLASSES ?= "package_ipk"
>  INHERIT_BLACKLIST = "blacklist"
>  INHERIT_DISTRO ?= "debian devshell sstate license remove-libtool"
>  INHERIT += "${PACKAGE_CLASSES} ${USER_CLASSES} ${INHERIT_DISTRO} ${INHERIT_BLACKLIST}"
> +
> +INIT_MANAGER ??= "sysvinit"
> +require conf/distro/include/init-manager-${INIT_MANAGER}.inc
>...
> --- /dev/null
> +++ b/meta/conf/distro/include/init-manager-sysvinit.inc
> @@ -0,0 +1,6 @@
> +# Use sysvinit for system initialization
> +DISTRO_FEATURES_append = " sysvinit"
> +DISTRO_FEATURES_BACKFILL_CONSIDERED_append = " systemd"
> +VIRTUAL-RUNTIME_init_manager = "sysvinit"
> +VIRTUAL-RUNTIME_initscripts = "initscripts"
> +VIRTUAL-RUNTIME_login_manager = "busybox"

I am not sure whether this can be fixed better, but this does break 
existing configurations that use a non-default init system.

I just ran into a build issue with
  VIRTUAL-RUNTIME_init_manager = "systemd"
since this now resulted in both sysvinit and systemd being attempted to 
be installed to the image.

This was fixable in my configuration with
  -VIRTUAL-RUNTIME_init_manager = "systemd"
  +INIT_MANAGER = "systemd"

This at least needs to be properly documented as a breaking change.

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed