빌드시 

 $ MACHINE=qemuarm bitbake core-image-minial

하거나 export MACHINE= qemuarm

conf/local.conf 파일에 다음 과 같이 설정 MACHINE ?= "qemuarm"

* core-image-minimal : This is the smallest BusyBox-, sysvinit-, and udev-based

console-only image

* core-image-full-cmdline : This is the BusyBox-based console-only image with

full hardware support and a more complete Linux system, including bash

* core-image-lsb : This is a console-only image that is based on Linux Standard

Base compliance

* core-image-x11 : This is the basic X11 Windows-system-based image with a

graphical terminal

* core-image-sato : This is the X11 Window-system-based image with a SATO theme

and a GNOME Mobile desktop environment

* core-image-weston : This is a Wayland protocol and Weston reference compositor-

based image

You will also find images with the following suffixes:

* dev : These images are suitable for development work, as they contain headers and

libraries.

* sdk : These images include a complete SDK that can be used for development on

the target.

* initramfs : This is an image that can be used for a RAM-based root filesystem,

which can optionally be embedded with the Linux kernel.

----------------------------------------------------------------------------

you pass a target recipe to BitBake, 

                           it first parses the following configuration files:

•  conf/bblayers.conf : used to find all the configured layers
•  conf/layer.conf : used on each configured layer
•  meta/conf/bitbake.conf : used for its own configuration
•  conf/local.conf : this file is used for any other configuration the user may                                  have for the current build
•  conf/machine/<machine>.conf :   ex) qemuarm.conf
•  conf/distro/<distro>.conf : distribution policy, by defalt poky.conf

 $ source oe-init-build-env 또는 

 $ source oe-init-build-env  #{생성할 디렉터리 이름}

()?? 

Note

For information on running a memory-resident BitBake, see the oe-init-build-env-memres setup script.

을 실행하면 

 다음 파일들이 생성된다.

/poky/build/conf    / bblayers.conf

   / local.conf

리눅스 환경

관련 패키지 설치

multilib build-essential chrpath socat libsdl1.2-dev xterm make

xsltproc docbook-utils fop dblatex xmlto autoconf automake libtool

libglib2.0-dev python-gtk2 bsdmainutils screen

Installing Poky

Yocto release 1.7.1 을 설치한다.

$ sudo install -o $(id -u) -g $(id -g) -d /opt/yocto

$ cd /opt/yocto

$ git clone --branch dizzy git://git.yoctoproject.org/poky

$ cd /opt/yocto/poky

$ source oe-init-build-env qemuarm

다음 경로에 파일들이 생성된다.

li@li:/opt/yocto/poky/qemuarm/conf$ ls

bblayers.conf  local.conf  templateconf.cfg

templateconf.cfg : This file contains the directory that includes the template

configuration files used to create the project. By default it uses the one pointed to by

the  templateconf file in your Poky installation directory, which is  meta-yocto/

conf by default.

f core-image-minimal : This is the smallest BusyBox-, sysvinit-, and udev-based

console-only image

f core-image-full-cmdline : This is the BusyBox-based console-only image with

full hardware support and a more complete Linux system, including bash

f core-image-lsb : This is a console-only image that is based on Linux Standard

Base compliance

f core-image-x11 : This is the basic X11 Windows-system-based image with a

graphical terminal

f core-image-sato : This is the X11 Window-system-based image with a SATO theme

and a GNOME Mobile desktop environment

f core-image-weston : This is a Wayland protocol and Weston reference compositor-

based image

You will also find images with the following suffixes:

f dev : These images are suitable for development work, as they contain headers and

libraries.

f sdk : These images include a complete SDK that can be used for development on

the target.

f initramfs : This is an image that can be used for a RAM-based root filesystem,

which can optionally be embedded with the Linux kernel.

----------

$ cd /opt/yocto/poky/qemuarm

$ MACHINE=qemuarm bitbake core-image-minimal

Or we could export the  MACHINE variable to the current shell environment with the following:

$ export MACHINE=qemuarm

//////////////////////////////////////LOG

li@li:/opt/yocto/poky/qemuarm$ MACHINE=qemuarm bitbake core-image-minimal

Parsing recipes: 100% |######################| Time: 00:01:36

Parsing of 891 .bb files complete (0 cached, 891 parsed). 1287 targets, 61 skipped, 0 masked, 0 errors.

NOTE: Resolving any missing task queue dependencies

Build Configuration:

BB_VERSION        = "1.24.0"

BUILD_SYS         = "x86_64-linux"

NATIVELSBSTRING   = "Ubuntu-14.04"

TARGET_SYS        = "arm-poky-linux-gnueabi"

MACHINE           = "qemuarm"

DISTRO            = "poky"

DISTRO_VERSION    = "1.7.3"

TUNE_FEATURES     = "arm armv5 thumb dsp"

TARGET_FPU        = "soft"

meta              

meta-yocto        

meta-yocto-bsp    = "dizzy:6d34267e0a13e10ab91b60590b27a2b5ba3b7da6"

NOTE: Preparing runqueue

NOTE: Executing SetScene Tasks

NOTE: Executing RunQueue Tasks

WARNING: Failed to fetch URL ftp://ftp.gnu.org/gnu/automake/automake-1.14.1.tar.gz, attempting MIRRORS if available

WARNING: Failed to fetch URL http://download.savannah.gnu.org/releases/quilt/quilt-0.63.tar.gz, attempting MIRRORS if available

Currently 4 running tasks (92 of 2045):

0: gcc-source-4.9.1-r0 do_fetch (pid 25550)

1: pkgconfig-native-0.28-r0 do_configure (pid 39471)

2: ncurses-native-5.9-r15.1 do_configure (pid 50488)

3: gmp-native-6.0.0-r0 do_compile (pid 65956)

//////////////////////////////////////////////////////////////////////////

NOTE: Tasks Summary: Attempted 149 tasks of which 0 didn't need to be rerun and 2 failed.

Waiting for 0 running tasks to finish:

Summary: 2 tasks failed:

  virtual:native:/opt/yocto/poky/meta/recipes-support/libmpc/libmpc_1.0.2.bb, do_fetch

  virtual:native:/opt/yocto/poky/meta/recipes-extended/gperf/gperf_3.0.4.bb, do_fetch

Summary: There were 6 WARNING messages shown.

Summary: There were 4 ERROR messages shown, returning a non-zero exit code.