poky/meta-poky/conf/distro/poky-tiny.conf - mdmillerii/openbmc - Gitiles

 # Distribution definition for: poky-tiny
 #
 # Copyright (c) 2011, Intel Corporation.
 # All rights reserved.
 #
 # This file is released under the MIT license as described in
 # ../meta/COPYING.MIT.
 #
 # Poky-tiny is intended to define a tiny Linux system comprised of a
 # Linux kernel tailored to support each specific MACHINE and busybox.
 # Poky-tiny sets some basic policy to ensure a usable system while still
 # keeping the rootfs and kernel image as small as possible.
 #
 # The policies defined are intended to meet the following goals:
 # o Serial consoles only (no framebuffer or VGA console)
 # o Basic support for IPV4 networking
 # o Single user ash shell
 # o Static images (no support for adding packages or libraries later)
 # o Read-only or RAMFS root filesystem
 # o Combined Linux kernel + rootfs in under 4MB
 # o Allow the user to select between eglibc or uclibc with the TCLIBC variable
 #
 # This is currently a partial definition, the following tasks remain:
 # [ ] Integrate linux-yocto-tiny ktype into linux-yocto
 # [ ] Define linux-yocto-tiny configs for all supported BSPs
 # [ ] Drop ldconfig from the installation
 # [ ] Modify the runqemu scripts to work with ext2 parameter:
 #     runqemu qemux86 qemuparams="-nographic" bootparams="console=ttyS0,115200 root=0800"
 # [ ] Modify busybox to allow for DISTRO_FEATURES-like configuration

 require conf/distro/poky.conf
 require conf/distro/include/gcsections.inc

 DISTRO = "poky-tiny"
 DISTRO_NAME = "Poky Tiny"
 DISTROOVERRIDES = "poky:poky-tiny"
 TCLIBC = "musl"

 FULL_OPTIMIZATION="-Os -pipe ${DEBUG_FLAGS}"

 # FIXME: consider adding a new "tiny" feature
 #DISTRO_FEATURES_append = " tiny"

 # Distro config is evaluated after the machine config, so we have to explicitly
 # set the kernel provider to override a machine config.
 PREFERRED_PROVIDER_virtual/kernel = "linux-yocto-tiny"
 PREFERRED_VERSION_linux-yocto-tiny ?= "6.6%"

 # We can use packagegroup-core-boot, but in the future we may need a new packagegroup-core-tiny
 #POKY_DEFAULT_EXTRA_RDEPENDS += "packagegroup-core-boot"
 # Drop kernel-module-af-packet from RRECOMMENDS
 POKY_DEFAULT_EXTRA_RRECOMMENDS = ""

 # FIXME: what should we do with this?
 TCLIBCAPPEND = ""

 # Disable wide char support for ncurses as we don't include it in
 # in the LIBC features below.
 # Leave native enable to avoid build failures
 ENABLE_WIDEC = "false"
 ENABLE_WIDEC:class-native = "true"

 # Drop native language support. This removes the
 # eglibc->bash->gettext->libc-posix-clang-wchar dependency.
 USE_NLS="no"
 # As we don't have native language support, don't install locales into images
 IMAGE_LINGUAS = ""

 # Comment out any of the lines below to disable them in the build
 # DISTRO_FEATURES options:
 # alsa bluetooth ext2 pcmcia usbgadget usbhost wifi nfs zeroconf pci
 DISTRO_FEATURES_TINY = "pci"
 DISTRO_FEATURES_NET = "ipv4 ipv6"
 DISTRO_FEATURES_USB = "usbhost"
 #DISTRO_FEATURES_USBGADGET = "usbgadget"
 #DISTRO_FEATURES_WIFI = "wifi"

 DISTRO_FEATURES = "${DISTRO_FEATURES_TINY} \
                    ${DISTRO_FEATURES_NET} \
                    ${DISTRO_FEATURES_USB} \
                    ${DISTRO_FEATURES_USBGADGET} \
                    ${DISTRO_FEATURES_WIFI} \
                   "

 DISTRO_FEATURES:class-native = "${DISTRO_FEATURES_DEFAULT} ${POKY_DEFAULT_DISTRO_FEATURES}"
 DISTRO_FEATURES:class-nativesdk = "${DISTRO_FEATURES_DEFAULT} ${POKY_DEFAULT_DISTRO_FEATURES}"

 # enable mdev/busybox for init
 POKY_INIT_MANAGER:poky-tiny = "mdev-busybox"

 # FIXME: Consider adding "modules" to MACHINE_FEATURES and using that in
 # packagegroup-core-base to select modutils-initscripts or not.  Similar with "net" and
 # netbase.

 # By default we only support initramfs. We don't build live as that
 # pulls in a lot of dependencies for the live image and the installer, like
 # udev, grub, etc.  These pull in gettext, which fails to build with wide
 # character support.
 IMAGE_FSTYPES = "cpio.gz"
 QB_DEFAULT_FSTYPE = "cpio.gz"

 # Drop v86d from qemu dependency list (we support serial)
 # Drop grub from meta-intel BSPs
 # FIXME: A different mechanism is needed here. We could define -tiny
 #        variants of all compatible machines, but that leads to a lot
 #        more machine configs to maintain long term.
 MACHINE_ESSENTIAL_EXTRA_RDEPENDS = ""

 # The mtrace script included by eglibc is a perl script. This means the system
 # will build perl in case this package is installed. Since we don't care about
 # this script for the purposes of tiny, remove the dependency from here.
 RDEPENDS:${PN}-mtrace:pn-eglibc = ""

 SKIP_RECIPE[build-appliance-image] = "not buildable with poky-tiny"
 SKIP_RECIPE[core-image-rt] = "not buildable with poky-tiny"
 SKIP_RECIPE[core-image-rt-sdk] = "not buildable with poky-tiny"
 SKIP_RECIPE[core-image-sato] = "not buildable with poky-tiny"
 SKIP_RECIPE[core-image-sato-dev] = "not buildable with poky-tiny"
 SKIP_RECIPE[core-image-sato-sdk] = "not buildable with poky-tiny"
 SKIP_RECIPE[core-image-x11] = "not buildable with poky-tiny"
 SKIP_RECIPE[core-image-weston] = "not buildable with poky-tiny"

 # Disable python usage in opkg-utils since it won't build with tiny config
 PACKAGECONFIG:remove:pn-opkg-utils = "python"

 # If shadow-base is brought into the image, logins will fail because it
 # doesn't have the heuristics to work when CONFIG_MULTIUSER is unset.
 PACKAGE_EXCLUDE += "shadow-base"
	# Distribution definition for: poky-tiny
	#
	# Copyright (c) 2011, Intel Corporation.
	# All rights reserved.
	#
	# This file is released under the MIT license as described in
	# ../meta/COPYING.MIT.
	#
	# Poky-tiny is intended to define a tiny Linux system comprised of a
	# Linux kernel tailored to support each specific MACHINE and busybox.
	# Poky-tiny sets some basic policy to ensure a usable system while still
	# keeping the rootfs and kernel image as small as possible.
	#
	# The policies defined are intended to meet the following goals:
	# o Serial consoles only (no framebuffer or VGA console)
	# o Basic support for IPV4 networking
	# o Single user ash shell
	# o Static images (no support for adding packages or libraries later)
	# o Read-only or RAMFS root filesystem
	# o Combined Linux kernel + rootfs in under 4MB
	# o Allow the user to select between eglibc or uclibc with the TCLIBC variable
	#
	# This is currently a partial definition, the following tasks remain:
	# [ ] Integrate linux-yocto-tiny ktype into linux-yocto
	# [ ] Define linux-yocto-tiny configs for all supported BSPs
	# [ ] Drop ldconfig from the installation
	# [ ] Modify the runqemu scripts to work with ext2 parameter:
	# runqemu qemux86 qemuparams="-nographic" bootparams="console=ttyS0,115200 root=0800"
	# [ ] Modify busybox to allow for DISTRO_FEATURES-like configuration

	require conf/distro/poky.conf
	require conf/distro/include/gcsections.inc

	DISTRO = "poky-tiny"
	DISTRO_NAME = "Poky Tiny"
	DISTROOVERRIDES = "poky:poky-tiny"
	TCLIBC = "musl"

	FULL_OPTIMIZATION="-Os -pipe ${DEBUG_FLAGS}"

	# FIXME: consider adding a new "tiny" feature
	#DISTRO_FEATURES_append = " tiny"

	# Distro config is evaluated after the machine config, so we have to explicitly
	# set the kernel provider to override a machine config.
	PREFERRED_PROVIDER_virtual/kernel = "linux-yocto-tiny"
	PREFERRED_VERSION_linux-yocto-tiny ?= "6.6%"

	# We can use packagegroup-core-boot, but in the future we may need a new packagegroup-core-tiny
	#POKY_DEFAULT_EXTRA_RDEPENDS += "packagegroup-core-boot"
	# Drop kernel-module-af-packet from RRECOMMENDS
	POKY_DEFAULT_EXTRA_RRECOMMENDS = ""

	# FIXME: what should we do with this?
	TCLIBCAPPEND = ""

	# Disable wide char support for ncurses as we don't include it in
	# in the LIBC features below.
	# Leave native enable to avoid build failures
	ENABLE_WIDEC = "false"
	ENABLE_WIDEC:class-native = "true"

	# Drop native language support. This removes the
	# eglibc->bash->gettext->libc-posix-clang-wchar dependency.
	USE_NLS="no"
	# As we don't have native language support, don't install locales into images
	IMAGE_LINGUAS = ""

	# Comment out any of the lines below to disable them in the build
	# DISTRO_FEATURES options:
	# alsa bluetooth ext2 pcmcia usbgadget usbhost wifi nfs zeroconf pci
	DISTRO_FEATURES_TINY = "pci"
	DISTRO_FEATURES_NET = "ipv4 ipv6"
	DISTRO_FEATURES_USB = "usbhost"
	#DISTRO_FEATURES_USBGADGET = "usbgadget"
	#DISTRO_FEATURES_WIFI = "wifi"

	DISTRO_FEATURES = "${DISTRO_FEATURES_TINY} \
	${DISTRO_FEATURES_NET} \
	${DISTRO_FEATURES_USB} \
	${DISTRO_FEATURES_USBGADGET} \
	${DISTRO_FEATURES_WIFI} \
	"

	DISTRO_FEATURES:class-native = "${DISTRO_FEATURES_DEFAULT} ${POKY_DEFAULT_DISTRO_FEATURES}"
	DISTRO_FEATURES:class-nativesdk = "${DISTRO_FEATURES_DEFAULT} ${POKY_DEFAULT_DISTRO_FEATURES}"

	# enable mdev/busybox for init
	POKY_INIT_MANAGER:poky-tiny = "mdev-busybox"

	# FIXME: Consider adding "modules" to MACHINE_FEATURES and using that in
	# packagegroup-core-base to select modutils-initscripts or not. Similar with "net" and
	# netbase.

	# By default we only support initramfs. We don't build live as that
	# pulls in a lot of dependencies for the live image and the installer, like
	# udev, grub, etc. These pull in gettext, which fails to build with wide
	# character support.
	IMAGE_FSTYPES = "cpio.gz"
	QB_DEFAULT_FSTYPE = "cpio.gz"

	# Drop v86d from qemu dependency list (we support serial)
	# Drop grub from meta-intel BSPs
	# FIXME: A different mechanism is needed here. We could define -tiny
	# variants of all compatible machines, but that leads to a lot
	# more machine configs to maintain long term.
	MACHINE_ESSENTIAL_EXTRA_RDEPENDS = ""

	# The mtrace script included by eglibc is a perl script. This means the system
	# will build perl in case this package is installed. Since we don't care about
	# this script for the purposes of tiny, remove the dependency from here.
	RDEPENDS:${PN}-mtrace:pn-eglibc = ""

	SKIP_RECIPE[build-appliance-image] = "not buildable with poky-tiny"
	SKIP_RECIPE[core-image-rt] = "not buildable with poky-tiny"
	SKIP_RECIPE[core-image-rt-sdk] = "not buildable with poky-tiny"
	SKIP_RECIPE[core-image-sato] = "not buildable with poky-tiny"
	SKIP_RECIPE[core-image-sato-dev] = "not buildable with poky-tiny"
	SKIP_RECIPE[core-image-sato-sdk] = "not buildable with poky-tiny"
	SKIP_RECIPE[core-image-x11] = "not buildable with poky-tiny"
	SKIP_RECIPE[core-image-weston] = "not buildable with poky-tiny"

	# Disable python usage in opkg-utils since it won't build with tiny config
	PACKAGECONFIG:remove:pn-opkg-utils = "python"

	# If shadow-base is brought into the image, logins will fail because it
	# doesn't have the heuristics to work when CONFIG_MULTIUSER is unset.
	PACKAGE_EXCLUDE += "shadow-base"