141 lines
5.9 KiB
Plaintext
141 lines
5.9 KiB
Plaintext
# Distribution definition for: poky-tiny
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#
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# Copyright (c) 2011, Intel Corporation.
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# All rights reserved.
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#
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# This file is released under the MIT license as described in
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# ../meta/COPYING.MIT.
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#
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# Poky-tiny is intended to define a tiny Linux system comprised of a
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# Linux kernel tailored to support each specific MACHINE and busybox.
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# Poky-tiny sets some basic policy to ensure a usable system while still
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# keeping the rootfs and kernel image as small as possible.
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#
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# The policies defined are intended to meet the following goals:
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# o Serial consoles only (no framebuffer or VGA console)
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# o Basic support for IPV4 networking
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# o Single user ash shell
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# o Static images (no support for adding packages or libraries later)
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# o Read-only or RAMFS root filesystem
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# o Combined Linux kernel + rootfs in under 4MB
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# o Allow the user to select between eglibc or uclibc with the TCLIBC variable
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#
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# This is currently a partial definition, the following tasks remain:
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# [ ] Integrate linux-yocto-tiny ktype into linux-yocto
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# [ ] Define linux-yocto-tiny configs for all supported BSPs
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# [ ] Drop ldconfig from the installation
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# [ ] Modify the runqemu scripts to work with ext2 parameter:
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# runqemu qemux86 qemuparams="-nographic" bootparams="console=ttyS0,115200 root=0800"
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# [ ] Modify busybox to allow for DISTRO_FEATURES-like confiruration
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require conf/distro/poky.conf
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DISTRO = "poky-tiny"
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# FIXME: consider adding a new "tiny" feature
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#DISTRO_FEATURES_append = " tiny"
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# Distro config is evaluated after the machine config, so we have to explicitly
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# set the kernel provider to override a machine config.
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PREFERRED_PROVIDER_virtual/kernel = "linux-yocto-tiny"
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PREFERRED_VERSION_linux-yocto-tiny = "3.8%"
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# We can use packagegroup-core-boot, but in the future we may need a new packagegroup-core-tiny
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#POKY_DEFAULT_EXTRA_RDEPENDS += "packagegroup-core-boot"
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# Drop kernel-module-af-packet from RRECOMMENDS
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POKY_DEFAULT_EXTRA_RRECOMMENDS = ""
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# FIXME: what should we do with this?
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TCLIBCAPPEND = ""
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# Disable wide char support for ncurses as we don't include it in
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# in the LIBC features below.
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ENABLE_WIDEC="false"
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# Drop native language support. This removes the
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# eglibc->bash->gettext->libc-posix-clang-wchar dependency.
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USE_NLS="no"
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# -dev packages require pkgconfig, but it pulls in glib->dbus->shadow
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# which breaks with tiny's minimal libc.
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# -dev packages are not currently supported on poky-tiny.
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ASSUME_PROVIDED += "pkgconfig$"
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# Reconfigure eglibc for a smaller installation
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# Comment out any of the lines below to disable them in the build
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DISTRO_FEATURES_LIBC_TINY = "libc-libm libc-crypt"
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DISTRO_FEATURES_LIBC_TINY_append_x86-64 = " libc-libm-big"
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# Required for "who"
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DISTRO_FEATURES_LIBC_MINIMAL = "libc-utmp libc-getlogin"
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DISTRO_FEATURES_LIBC_REGEX = "libc-posix-regexp"
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DISTRO_FEATURES_LIBC_NET = "libc-inet libc-nis"
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DISTRO_FEATURES_LIBC = "${DISTRO_FEATURES_LIBC_TINY} \
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${DISTRO_FEATURES_LIBC_MINIMAL} \
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${DISTRO_FEATURES_LIBC_REGEX} \
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${DISTRO_FEATURES_LIBC_NET} \
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"
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# Comment out any of the lines below to disable them in the build
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# DISTRO_FEATURES options:
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# alsa bluetooth ext2 irda pcmcia usbgadget usbhost wifi nfs zeroconf pci
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DISTRO_FEATURES_TINY = "pci"
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DISTRO_FEATURES_NET = "ipv4"
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DISTRO_FEATURES_USB = "usbhost"
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#DISTRO_FEATURES_USBGADGET = "usbgadget"
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#DISTRO_FEATURES_WIFI = "wifi"
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DISTRO_FEATURES = "${DISTRO_FEATURES_TINY} \
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${DISTRO_FEATURES_NET} \
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${DISTRO_FEATURES_USB} \
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${DISTRO_FEATURES_USBGADGET} \
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${DISTRO_FEATURES_WIFI} \
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${DISTRO_FEATURES_LIBC} \
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"
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# Use tmpdevfs and the busybox runtime services
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VIRTUAL-RUNTIME_dev_manager = ""
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VIRTUAL-RUNTIME_login_manager = ""
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VIRTUAL-RUNTIME_init_manager = "tiny-init"
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VIRTUAL-RUNTIME_keymaps = ""
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# FIXME: Consider adding "modules" to MACHINE_FEATURES and using that in
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# packagegroup-core-base to select modutils-initscripts or not. Similar with "net" and
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# netbase.
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# By default we only support ext2 and initramfs. We don't build live as that
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# pulls in a lot of dependencies for the live image and the installer, like
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# udev, grub, etc. These pull in gettext, which fails to build with wide
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# character support.
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IMAGE_FSTYPES = "ext2 cpio.gz"
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# Drop v86d from qemu dependency list (we support serial)
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# Drop grub from meta-intel BSPs
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# FIXME: A different mechanism is needed here. We could define -tiny
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# variants of all compatible machines, but that leads to a lot
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# more machine configs to maintain long term.
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MACHINE_ESSENTIAL_EXTRA_RDEPENDS = ""
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# The mtrace script included by eglibc is a perl script. This means the system
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# will build perl in case this package is installed. Since we don't care about
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# this script for the purposes of tiny, remove the dependency from here.
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RDEPENDS_${PN}-mtrace_pn-eglibc = ""
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INHERIT += "blacklist"
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PNBLACKLIST[build-appliance-image] = "not buildable with poky-tiny"
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PNBLACKLIST[core-image-base] = "not buildable with poky-tiny"
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PNBLACKLIST[core-image-basic] = "not buildable with poky-tiny"
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PNBLACKLIST[core-image-clutter] = "not buildable with poky-tiny"
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PNBLACKLIST[core-image-directfb] = "not buildable with poky-tiny"
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PNBLACKLIST[core-image-lsb] = "not buildable with poky-tiny"
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PNBLACKLIST[core-image-lsb-dev] = "not buildable with poky-tiny"
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PNBLACKLIST[core-image-lsb-sdk] = "not buildable with poky-tiny"
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PNBLACKLIST[core-image-rt] = "not buildable with poky-tiny"
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PNBLACKLIST[core-image-rt-sdk] = "not buildable with poky-tiny"
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PNBLACKLIST[core-image-sato] = "not buildable with poky-tiny"
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PNBLACKLIST[core-image-sato-dev] = "not buildable with poky-tiny"
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PNBLACKLIST[core-image-sato-sdk] = "not buildable with poky-tiny"
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PNBLACKLIST[core-image-x11] = "not buildable with poky-tiny"
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PNBLACKLIST[qt4e-demo-image] = "not buildable with poky-tiny"
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PNBLACKLIST[core-image-weston] = "not buildable with poky-tiny"
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