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authorRichard Purdie <richard@openedhand.com>2008-02-26 11:41:20 +0000
committerRichard Purdie <richard@openedhand.com>2008-02-26 11:41:20 +0000
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README*: Update after addition of manual
git-svn-id: https://svn.o-hand.com/repos/poky/trunk@3867 311d38ba-8fff-0310-9ca6-ca027cbcb966
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- Using Poky - Poky Commands
- ==========================
-
-Bitbake
-=======
-
-Bitbake is the tool at the heart of poky and is responsible for parsing the
-metadata, generating a list of tasks from it and then executing them. To see a
-list of the options it supports look at "bitbake --help".
-
-The most common usage is "bitbake <packagename>" where <packagename> is the name
-of the package you wish to build. This often equates to the first part of a .bb
-filename so to run the matchbox-desktop_1.2.3.bb file, you might type "bitbake
-matchbox-desktop. Several different versions of matchbox-desktop might exist
-and bitbake will choose the one selected by the distribution configuration.
-Bitbake will also try to execute any dependent tasks first so before building
-matchbox-desktop it would build a cross compiler and glibc if not already built.
-
-
-Bitbake - Package Tasks
-=======================
-
-Any given package consists of a set of tasks, in most cases the series is fetch,
-unpack, patch, configure, compile, install, package, package_write and build.
-The default task is "build" and any tasks this depends on are built first hence
-the standard bitbake behaviour. There are some tasks such as devshell which are
-not part of the default build chain. If you wish to run such a task you can use
-the "-c" option to bitbake e.g. "bitbake matchbox-desktop -c devshell".
-
-If you wish to rerun a task you can use the force option "-f". A typical usage
-case might look like:
-
-% bitbake matchbox-desktop
-[change some source in the WORKDIR for example]
-% bitbake matchbox-desktop -c compile -f
-% bitbake matchbox-desktop
-
-which would build matchbox-desktop, then recompile it. The final command reruns
-all tasks after the compile (basically the packaging tasks) since bitbake will
-notice the the compile has been rerun and hence the other tasks also need to run
-again.
-
-You can view a list of tasks in a given package by running the listtasks task
-e.g. "bitbake matchbox-desktop -c listtasks".
-
-
-Bitbake - Dependency Graphs
-===========================
-
-Sometimes it can be hard to see why bitbake wants to build some other packages
-before a given package you've specified. "bitbake matchbox-desktop -g" will
-create a task-depends.dot file in the current directory. This shows which
-packages and tasks depend on which other packages and tasks and it useful for
-debugging purposes.
-
-
-Bitbake - Advanced Usage
-========================
-
-Debug output from bitbake can be seen with the "-D" option and can sometimes
-give more information about what bitbake is doing and/or why. Each -D options
-increases the logging level, the most common usage being "-DDD".
-
-If you really want to build a specific .bb file, you can use the form "bitbake
--b somepath/somefile.bb". Note that this will not check the dependencies so this
-option should only be used when you know the dependencies already exist. You can
-specify fragments of the filename and bitbake will see if it can find a unique
-match.
-
-The -e option will dump the resulting environment for either the configuration
-(no package specified) or for a specific package when specified with the -b
-option.
-
-The -k option will cause bitbake to try and continue even if a task fails. It
-can be useful for world or unattended builds.
-
-The -s option lists all the versions of packages that bitbake will use.
-
-
-Bitbake - More Information
-==========================
-
-See the bitbake user manual at: http://bitbake.berlios.de/manual/
-
-QEMU
-====
-
-Running images built by poky under qemu is possible within the poky environment
-through the "runqemu" command. It has the form:
-
-runqemu MACHINE IMAGETYPE ZIMAGE IMAGEFILE
-
-where:
-
-MACHINE - the machine to emulate (qemux86, qemuarm, spitz, akita)
-IMAGETYPE - the type of image to use (nfs or ext2)
-ZIMAGE - location of the kernel binary to use
-IMAGEFILE - location of the image file to use
-(common options are in brackets)
-
-MACHINE is mandatory, the others are optional.
-
-This assumes a suitable qemu binary is available with support for a given
-machine. For further information see scripts/poky-qemu.README.
-
- Copyright (C) 2006-2007 OpenedHand Ltd.