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diff --git a/import-layers/yocto-poky/documentation/dev-manual/dev-manual-model.xml b/import-layers/yocto-poky/documentation/dev-manual/dev-manual-model.xml index ff44a3f68b..1008e11696 100644 --- a/import-layers/yocto-poky/documentation/dev-manual/dev-manual-model.xml +++ b/import-layers/yocto-poky/documentation/dev-manual/dev-manual-model.xml @@ -646,16 +646,20 @@ <para> The remainder of this section presents these workflows. + See the + "<ulink url='&YOCTO_DOCS_REF_URL;#ref-devtool-reference'><filename>devtool</filename> Quick Reference</ulink>" + in the Yocto Project Reference Manual for a + <filename>devtool</filename> quick reference. </para> <section id='use-devtool-to-integrate-new-code'> - <title>Use <filename>devtool add</filename> to Integrate New Code</title> + <title>Use <filename>devtool add</filename> to Add an Application</title> <para> The <filename>devtool add</filename> command generates a new recipe based on existing source code. This command takes advantage of the - <link linkend='devtool-the-workspace-layer-structure'>workspace</link> + <ulink url='&YOCTO_DOCS_DEV_URL;#devtool-the-workspace-layer-structure'>workspace</ulink> layer that many <filename>devtool</filename> commands use. The command is flexible enough to allow you to extract source @@ -721,7 +725,8 @@ and needs to be extracted to some local area - this time outside of the default workspace. - As always, if required <filename>devtool</filename> creates + If required, <filename>devtool</filename> + always creates a Git repository locally during the extraction. Furthermore, the first positional argument <replaceable>srctree</replaceable> in this case @@ -788,10 +793,6 @@ <para>If you need to take the build output and eventually move it to the target hardware, you would use <filename>devtool build</filename>: - <note> - You could use <filename>bitbake</filename> to build - the recipe as well. - </note> <literallayout class='monospaced'> $ devtool build <replaceable>recipe</replaceable> </literallayout></para> @@ -831,49 +832,44 @@ However, <filename>devtool</filename> does not provide a specific command that allows you to do this. </para></listitem> - <listitem><para><emphasis>Optionally Update the Recipe With Patch Files</emphasis>: - Once you are satisfied with the recipe, if you have made - any changes to the source tree that you want to have - applied by the recipe, you need to generate patches - from those changes. - You do this before moving the recipe - to its final layer and cleaning up the workspace area - <filename>devtool</filename> uses. - This optional step is especially relevant if you are - using or adding third-party software.</para> - <para>To convert commits created using Git to patch files, - use the <filename>devtool update-recipe</filename> command. + <listitem><para> + <emphasis>Finish Your Work With the Recipe</emphasis>: + The <filename>devtool finish</filename> command creates + any patches corresponding to commits in the local + Git repository, moves the new recipe to a more permanent + layer, and then resets the recipe so that the recipe is + built normally rather than from the workspace. + <literallayout class='monospaced'> + $ devtool finish <replaceable>recipe layer</replaceable> + </literallayout> <note> Any changes you want to turn into patches must be committed to the Git repository in the source tree. + </note></para> + + <para>As mentioned, the <filename>devtool finish</filename> + command moves the final recipe to its permanent layer. + </para> + + <para>As a final process of the + <filename>devtool finish</filename> command, the state + of the standard layers and the upstream source is + restored so that you can build the recipe from those + areas rather than the workspace. + <note> + You can use the <filename>devtool reset</filename> + command to put things back should you decide you + do not want to proceed with your work. + If you do use this command, realize that the source + tree is preserved. </note> - <literallayout class='monospaced'> - $ devtool update-recipe <replaceable>recipe</replaceable> - </literallayout> - </para></listitem> - <listitem><para><emphasis>Move the Recipe to its Permanent Layer</emphasis>: - Before cleaning up the workspace, you need to move the - final recipe to its permanent layer. - You must do this before using the - <filename>devtool reset</filename> command if you want to - retain the recipe. - </para></listitem> - <listitem><para><emphasis>Reset the Recipe</emphasis>: - As a final step, you can restore the state such that - standard layers and the upstream source is used to build - the recipe rather than data in the workspace. - To reset the recipe, use the <filename>devtool reset</filename> - command: - <literallayout class='monospaced'> - $ devtool reset <replaceable>recipe</replaceable> - </literallayout> </para></listitem> </orderedlist> </para> </section> <section id='devtool-use-devtool-modify-to-enable-work-on-code-associated-with-an-existing-recipe'> - <title>Use <filename>devtool modify</filename> to Enable Work on Code Associated with an Existing Recipe</title> + <title>Use <filename>devtool modify</filename> to Modify the Source of an Existing Component</title> <para> The <filename>devtool modify</filename> command prepares the @@ -1028,17 +1024,12 @@ <listitem><para><emphasis>Build the Recipe</emphasis>: Once you have updated the source files, you can build the recipe. - You can either use <filename>devtool build</filename> or - <filename>bitbake</filename>. - Either method produces build output that is stored - in - <ulink url='&YOCTO_DOCS_REF_URL;#var-TMPDIR'><filename>TMPDIR</filename></ulink>. </para></listitem> <listitem><para><emphasis>Deploy the Build Output</emphasis>: When you use the <filename>devtool build</filename> - command or <filename>bitbake</filename> to build out your - recipe, you probably want to see if the resulting build - output works as expected on target hardware. + command to build out your recipe, you probably want to see + if the resulting build output works as expected on target + hardware. <note> This step assumes you have a previously built image that is already either running in QEMU or @@ -1062,42 +1053,43 @@ However, <filename>devtool</filename> does not provide a specific command that allows you to do this. </para></listitem> - <listitem><para><emphasis>Optionally Create Patch Files for Your Changes</emphasis>: - After you have debugged your changes, you can - use <filename>devtool update-recipe</filename> to - generate patch files for all the commits you have - made. - <note> - Patch files are generated only for changes - you have committed. - </note> + <listitem><para> + <emphasis>Finish Your Work With the Recipe</emphasis>: + The <filename>devtool finish</filename> command creates + any patches corresponding to commits in the local + Git repository, updates the recipe to point to them + (or creates a <filename>.bbappend</filename> file to do + so, depending on the specified destination layer), and + then resets the recipe so that the recipe is built normally + rather than from the workspace. <literallayout class='monospaced'> - $ devtool update-recipe <replaceable>recipe</replaceable> + $ devtool finish <replaceable>recipe layer</replaceable> </literallayout> - By default, the - <filename>devtool update-recipe</filename> command - creates the patch files in a folder named the same - as the recipe beneath the folder in which the recipe - resides, and updates the recipe's - <ulink url='&YOCTO_DOCS_REF_URL;#var-SRC_URI'><filename>SRC_URI</filename></ulink> - statement to point to the generated patch files. <note> - You can use the - "--append <replaceable>LAYERDIR</replaceable>" - option to cause the command to create append files - in a specific layer rather than the default - recipe layer. + Any changes you want to turn into patches must be + committed to the Git repository in the source tree. + </note></para> + + <para>Because there is no need to move the recipe, + <filename>devtool finish</filename> either updates the + original recipe in the original layer or the command + creates a <filename>.bbappend</filename> in a different + layer as provided by <replaceable>layer</replaceable>. + </para> + + <para>As a final process of the + <filename>devtool finish</filename> command, the state + of the standard layers and the upstream source is + restored so that you can build the recipe from those + areas rather than the workspace. + <note> + You can use the <filename>devtool reset</filename> + command to put things back should you decide you + do not want to proceed with your work. + If you do use this command, realize that the source + tree is preserved. </note> </para></listitem> - <listitem><para><emphasis>Restore the Workspace</emphasis>: - The <filename>devtool reset</filename> restores the - state so that standard layers and upstream sources are - used to build the recipe rather than what is in the - workspace. - <literallayout class='monospaced'> - $ devtool reset <replaceable>recipe</replaceable> - </literallayout> - </para></listitem> </orderedlist> </para> </section> @@ -1229,633 +1221,42 @@ However, <filename>devtool</filename> does not provide a specific command that allows you to do this. </para></listitem> - <listitem><para><emphasis>Optionally Create Patch Files for Your Changes</emphasis>: - After you have debugged your changes, you can - use <filename>devtool update-recipe</filename> to - generate patch files for all the commits you have - made. - <note> - Patch files are generated only for changes - you have committed. - </note> + <listitem><para> + <emphasis>Finish Your Work With the Recipe</emphasis>: + The <filename>devtool finish</filename> command creates + any patches corresponding to commits in the local + Git repository, moves the new recipe to a more permanent + layer, and then resets the recipe so that the recipe is + built normally rather than from the workspace. + If you specify a destination layer that is the same as + the original source, then the old version of the + recipe and associated files will be removed prior to + adding the new version. <literallayout class='monospaced'> - $ devtool update-recipe <replaceable>recipe</replaceable> - </literallayout> - By default, the - <filename>devtool update-recipe</filename> command - creates the patch files in a folder named the same - as the recipe beneath the folder in which the recipe - resides, and updates the recipe's - <ulink url='&YOCTO_DOCS_REF_URL;#var-SRC_URI'><filename>SRC_URI</filename></ulink> - statement to point to the generated patch files. - </para></listitem> - <listitem><para><emphasis>Move the Recipe to its Permanent Layer</emphasis>: - Before cleaning up the workspace, you need to move the - final recipe to its permanent layer. - You can either overwrite the original recipe or you can - overlay the upgraded recipe into a separate layer. - You must do this before using the - <filename>devtool reset</filename> command if you want to - retain the upgraded recipe. - </para></listitem> - <listitem><para><emphasis>Restore the Workspace</emphasis>: - The <filename>devtool reset</filename> restores the - state so that standard layers and upstream sources are - used to build the recipe rather than what is in the - workspace. - <literallayout class='monospaced'> - $ devtool reset <replaceable>recipe</replaceable> + $ devtool finish <replaceable>recipe layer</replaceable> </literallayout> + <note> + Any changes you want to turn into patches must be + committed to the Git repository in the source tree. + </note></para> + <para>As a final process of the + <filename>devtool finish</filename> command, the state + of the standard layers and the upstream source is + restored so that you can build the recipe from those + areas rather than the workspace. + <note> + You can use the <filename>devtool reset</filename> + command to put things back should you decide you + do not want to proceed with your work. + If you do use this command, realize that the source + tree is preserved. + </note> </para></listitem> </orderedlist> </para> </section> </section> - <section id='devtool-quick-reference'> - <title><filename>devtool</filename> Quick Reference</title> - - <para> - <filename>devtool</filename> has more functionality than simply - adding a new recipe and the supporting Metadata to a temporary - workspace layer. - This section provides a short reference on - <filename>devtool</filename> and its commands. - </para> - - <section id='devtool-getting-help'> - <title>Getting Help</title> - - <para> - The easiest way to get help with the - <filename>devtool</filename> command is using the - <filename>--help</filename> option: - <literallayout class='monospaced'> - usage: devtool [--basepath BASEPATH] [--bbpath BBPATH] [-d] [-q] - [--color COLOR] [-h] - <subcommand> ... - - OpenEmbedded development tool - - optional arguments: - --basepath BASEPATH Base directory of SDK / build directory - --bbpath BBPATH Explicitly specify the BBPATH, rather than getting it - from the metadata - -d, --debug Enable debug output - -q, --quiet Print only errors - --color COLOR Colorize output (where COLOR is auto, always, never) - -h, --help show this help message and exit - - subcommands: - Beginning work on a recipe: - add Add a new recipe - modify Modify the source for an existing recipe - upgrade Upgrade an existing recipe - Getting information: - status Show workspace status - search Search available recipes - Working on a recipe in the workspace: - build Build a recipe - edit-recipe Edit a recipe file in your workspace - configure-help Get help on configure script options - update-recipe Apply changes from external source tree to recipe - reset Remove a recipe from your workspace - Testing changes on target: - deploy-target Deploy recipe output files to live target machine - undeploy-target Undeploy recipe output files in live target machine - build-image Build image including workspace recipe packages - Advanced: - create-workspace Set up workspace in an alternative location - extract Extract the source for an existing recipe - sync Synchronize the source tree for an existing recipe - Use devtool <subcommand> --help to get help on a specific command - </literallayout> - </para> - - <para> - As directed in the general help output, you can get more - syntax on a specific command by providing the command - name and using <filename>--help</filename>: - <literallayout class='monospaced'> - $ devtool add --help - usage: devtool add [-h] [--same-dir | --no-same-dir] [--fetch URI] - [--version VERSION] [--no-git] [--binary] [--also-native] - [--src-subdir SUBDIR] - [recipename] [srctree] [fetchuri] - - Adds a new recipe to the workspace to build a specified source tree. Can - optionally fetch a remote URI and unpack it to create the source tree. - - positional arguments: - recipename Name for new recipe to add (just name - no version, - path or extension). If not specified, will attempt to - auto-detect it. - srctree Path to external source tree. If not specified, a - subdirectory of - /home/scottrif/poky/build/workspace/sources will be - used. - fetchuri Fetch the specified URI and extract it to create the - source tree - - optional arguments: - -h, --help show this help message and exit - --same-dir, -s Build in same directory as source - --no-same-dir Force build in a separate build directory - --fetch URI, -f URI Fetch the specified URI and extract it to create the - source tree (deprecated - pass as positional argument - instead) - --version VERSION, -V VERSION - Version to use within recipe (PV) - --no-git, -g If fetching source, do not set up source tree as a git - repository - --binary, -b Treat the source tree as something that should be - installed verbatim (no compilation, same directory - structure). Useful with binary packages e.g. RPMs. - --also-native Also add native variant (i.e. support building recipe - for the build host as well as the target machine) - --src-subdir SUBDIR Specify subdirectory within source tree to use - </literallayout> - </para> - </section> - - <section id='devtool-the-workspace-layer-structure'> - <title>The Workspace Layer Structure</title> - - <para> - <filename>devtool</filename> uses a "Workspace" layer - in which to accomplish builds. - This layer is not specific to any single - <filename>devtool</filename> command but is rather a common - working area used across the tool. - </para> - - <para> - The following figure shows the workspace structure: - </para> - - <para> - <imagedata fileref="figures/build-workspace-directory.png" - width="6in" depth="5in" align="left" scale="70" /> - </para> - - <para> - <literallayout class='monospaced'> - attic - A directory created if devtool believes it preserve - anything when you run "devtool reset". For example, if you - run "devtool add", make changes to the recipe, and then - run "devtool reset", devtool takes notice that the file has - been changed and moves it into the attic should you still - want the recipe. - - README - Provides information on what is in workspace layer and how to - manage it. - - .devtool_md5 - A checksum file used by devtool. - - appends - A directory that contains *.bbappend files, which point to - external source. - - conf - A configuration directory that contains the layer.conf file. - - recipes - A directory containing recipes. This directory contains a - folder for each directory added whose name matches that of the - added recipe. devtool places the <replaceable>recipe</replaceable>.bb file - within that sub-directory. - - sources - A directory containing a working copy of the source files used - when building the recipe. This is the default directory used - as the location of the source tree when you do not provide a - source tree path. This directory contains a folder for each - set of source files matched to a corresponding recipe. - </literallayout> - </para> - </section> - - <section id='devtool-adding-a-new-recipe-to-the-workspace'> - <title>Adding a New Recipe to the Workspace Layer</title> - - <para> - Use the <filename>devtool add</filename> command to add a new recipe - to the workspace layer. - The recipe you add should not exist - - <filename>devtool</filename> creates it for you. - The source files the recipe uses should exist in an external - area. - </para> - - <para> - The following example creates and adds a new recipe named - <filename>jackson</filename> to a workspace layer the tool creates. - The source code built by the recipes resides in - <filename>/home/scottrif/sources/jackson</filename>: - <literallayout class='monospaced'> - $ devtool add jackson /home/scottrif/sources/jackson - </literallayout> - </para> - - <para> - If you add a recipe and the workspace layer does not exist, - the command creates the layer and populates it as - described in - "<link linkend='devtool-the-workspace-layer-structure'>The Workspace Layer Structure</link>" - section. - </para> - - <para> - Running <filename>devtool add</filename> when the - workspace layer exists causes the tool to add the recipe, - append files, and source files into the existing workspace layer. - The <filename>.bbappend</filename> file is created to point - to the external source tree. - </para> - </section> - - <section id='devtool-extracting-the-source-for-an-existing-recipe'> - <title>Extracting the Source for an Existing Recipe</title> - - <para> - Use the <filename>devtool extract</filename> command to - extract the source for an existing recipe. - When you use this command, you must supply the root name - of the recipe (i.e. no version, paths, or extensions), and - you must supply the directory to which you want the source - extracted. - </para> - - <para> - Additional command options let you control the name of a - development branch into which you can checkout the source - and whether or not to keep a temporary directory, which is - useful for debugging. - </para> - </section> - - <section id='devtool-synchronizing-a-recipes-extracted-source-tree'> - <title>Synchronizing a Recipe's Extracted Source Tree</title> - - <para> - Use the <filename>devtool sync</filename> command to - synchronize a previously extracted source tree for an - existing recipe. - When you use this command, you must supply the root name - of the recipe (i.e. no version, paths, or extensions), and - you must supply the directory to which you want the source - extracted. - </para> - - <para> - Additional command options let you control the name of a - development branch into which you can checkout the source - and whether or not to keep a temporary directory, which is - useful for debugging. - </para> - </section> - - <section id='devtool-modifying-a-recipe'> - <title>Modifying an Existing Recipe</title> - - <para> - Use the <filename>devtool modify</filename> command to begin - modifying the source of an existing recipe. - This command is very similar to the - <link linkend='devtool-adding-a-new-recipe-to-the-workspace'><filename>add</filename></link> - command except that it does not physically create the - recipe in the workspace layer because the recipe already - exists in an another layer. - </para> - - <para> - The <filename>devtool modify</filename> command extracts the - source for a recipe, sets it up as a Git repository if the - source had not already been fetched from Git, checks out a - branch for development, and applies any patches from the recipe - as commits on top. - You can use the following command to checkout the source - files: - <literallayout class='monospaced'> - $ devtool modify <replaceable>recipe</replaceable> - </literallayout> - Using the above command form, <filename>devtool</filename> uses - the existing recipe's - <ulink url='&YOCTO_DOCS_REF_URL;#var-SRC_URI'><filename>SRC_URI</filename></ulink> - statement to locate the upstream source, extracts the source - into the default sources location in the workspace. - The default development branch used is "devtool". - </para> - </section> - - <section id='devtool-edit-an-existing-recipe'> - <title>Edit an Existing Recipe</title> - - <para> - Use the <filename>devtool edit-recipe</filename> command - to run the default editor, which is identified using the - <filename>EDITOR</filename> variable, on the specified recipe. - </para> - - <para> - When you use the <filename>devtool edit-recipe</filename> - command, you must supply the root name of the recipe - (i.e. no version, paths, or extensions). - Also, the recipe file itself must reside in the workspace - as a result of the <filename>devtool add</filename> or - <filename>devtool upgrade</filename> commands. - However, you can override that requirement by using the - "-a" or "--any-recipe" option. - Using either of these options allows you to edit any recipe - regardless of its location. - </para> - </section> - - <section id='devtool-updating-a-recipe'> - <title>Updating a Recipe</title> - - <para> - Use the <filename>devtool update-recipe</filename> command to - update your recipe with patches that reflect changes you make - to the source files. - For example, if you know you are going to work on some - code, you could first use the - <link linkend='devtool-modifying-a-recipe'><filename>devtool modify</filename></link> - command to extract the code and set up the workspace. - After which, you could modify, compile, and test the code. - </para> - - <para> - When you are satisfied with the results and you have committed - your changes to the Git repository, you can then - run the <filename>devtool update-recipe</filename> to create the - patches and update the recipe: - <literallayout class='monospaced'> - $ devtool update-recipe <replaceable>recipe</replaceable> - </literallayout> - If you run the <filename>devtool update-recipe</filename> - without committing your changes, the command ignores the - changes. - </para> - - <para> - Often, you might want to apply customizations made to your - software in your own layer rather than apply them to the - original recipe. - If so, you can use the - <filename>-a</filename> or <filename>--append</filename> - option with the <filename>devtool update-recipe</filename> - command. - These options allow you to specify the layer into which to - write an append file: - <literallayout class='monospaced'> - $ devtool update-recipe <replaceable>recipe</replaceable> -a <replaceable>base-layer-directory</replaceable> - </literallayout> - The <filename>*.bbappend</filename> file is created at the - appropriate path within the specified layer directory, which - may or may not be in your <filename>bblayers.conf</filename> - file. - If an append file already exists, the command updates it - appropriately. - </para> - </section> - - <section id='devtool-upgrading-a-recipe'> - <title>Upgrading a Recipe</title> - - <para> - Use the <filename>devtool upgrade</filename> command - to upgrade an existing recipe to a new upstream version. - The command puts the upgraded recipe file into the - workspace along with any associated files, and extracts - the source tree to a specified location should patches - need rebased or added to as a result of the upgrade. - </para> - - <para> - When you use the <filename>devtool upgrade</filename> command, - you must supply the root name of the recipe (i.e. no version, - paths, or extensions), and you must supply the directory - to which you want the source extracted. - Additional command options let you control things such as - the version number to which you want to upgrade (i.e. the - <ulink url='&YOCTO_DOCS_REF_URL;#var-PV'><filename>PV</filename></ulink>), - the source revision to which you want to upgrade (i.e. the - <ulink url='&YOCTO_DOCS_REF_URL;#var-SRCREV'><filename>SRCREV</filename></ulink>, - whether or not to apply patches, and so forth. - </para> - </section> - - <section id='devtool-resetting-a-recipe'> - <title>Resetting a Recipe</title> - - <para> - Use the <filename>devtool reset</filename> command to remove a - recipe and its configuration (e.g. the corresponding - <filename>.bbappend</filename> file) from the workspace layer. - Realize that this command deletes the recipe and the - append file. - The command does not physically move them for you. - Consequently, you must be sure to physically relocate your - updated recipe and the append file outside of the workspace - layer before running the <filename>devtool reset</filename> - command. - </para> - - <para> - If the <filename>devtool reset</filename> command detects that - the recipe or the append files have been modified, the - command preserves the modified files in a separate "attic" - subdirectory under the workspace layer. - </para> - - <para> - Here is an example that resets the workspace directory that - contains the <filename>mtr</filename> recipe: - <literallayout class='monospaced'> - $ devtool reset mtr - NOTE: Cleaning sysroot for recipe mtr... - NOTE: Leaving source tree /home/scottrif/poky/build/workspace/sources/mtr as-is; if you no - longer need it then please delete it manually - $ - </literallayout> - </para> - </section> - - <section id='devtool-building-your-recipe'> - <title>Building Your Recipe</title> - - <para> - Use the <filename>devtool build</filename> command to cause the - OpenEmbedded build system to build your recipe. - The <filename>devtool build</filename> command is equivalent to - <filename>bitbake -c populate_sysroot</filename>. - </para> - - <para> - When you use the <filename>devtool build</filename> command, - you must supply the root name of the recipe (i.e. no version, - paths, or extensions). - You can use either the "-s" or the "--disable-parallel-make" - option to disable parallel makes during the build. - Here is an example: - <literallayout class='monospaced'> - $ devtool build <replaceable>recipe</replaceable> - </literallayout> - </para> - </section> - - <section id='devtool-building-your-image'> - <title>Building Your Image</title> - - <para> - Use the <filename>devtool build-image</filename> command - to build an image, extending it to include packages from - recipes in the workspace. - Using this command is useful when you want an image that - ready for immediate deployment onto a device for testing. - For proper integration into a final image, you need to - edit your custom image recipe appropriately. - </para> - - <para> - When you use the <filename>devtool build-image</filename> - command, you must supply the name of the image. - This command has no command line options: - <literallayout class='monospaced'> - $ devtool build-image <replaceable>image</replaceable> - </literallayout> - </para> - </section> - - <section id='devtool-deploying-your-software-on-the-target-machine'> - <title>Deploying Your Software on the Target Machine</title> - - <para> - Use the <filename>devtool deploy-target</filename> command to - deploy the recipe's build output to the live target machine: - <literallayout class='monospaced'> - $ devtool deploy-target <replaceable>recipe</replaceable> <replaceable>target</replaceable> - </literallayout> - The <replaceable>target</replaceable> is the address of the - target machine, which must be running an SSH server (i.e. - <filename>user@hostname[:destdir]</filename>). - </para> - - <para> - This command deploys all files installed during the - <ulink url='&YOCTO_DOCS_REF_URL;#ref-tasks-install'><filename>do_install</filename></ulink> - task. - Furthermore, you do not need to have package management enabled - within the target machine. - If you do, the package manager is bypassed. - <note><title>Notes</title> - <para> - The <filename>deploy-target</filename> - functionality is for development only. - You should never use it to update an image that will be - used in production. - </para> - </note> - </para> - </section> - - <section id='devtool-removing-your-software-from-the-target-machine'> - <title>Removing Your Software from the Target Machine</title> - - <para> - Use the <filename>devtool undeploy-target</filename> command to - remove deployed build output from the target machine. - For the <filename>devtool undeploy-target</filename> command to - work, you must have previously used the - <link linkend='devtool-deploying-your-software-on-the-target-machine'><filename>devtool deploy-target</filename></link> - command. - <literallayout class='monospaced'> - $ devtool undeploy-target <replaceable>recipe</replaceable> <replaceable>target</replaceable> - </literallayout> - The <replaceable>target</replaceable> is the address of the - target machine, which must be running an SSH server (i.e. - <filename>user@hostname</filename>). - </para> - </section> - - <section id='devtool-creating-the-workspace'> - <title>Creating the Workspace Layer in an Alternative Location</title> - - <para> - Use the <filename>devtool create-workspace</filename> command to - create a new workspace layer in your - <link linkend='build-directory'>Build Directory</link>. - When you create a new workspace layer, it is populated with the - <filename>README</filename> file and the - <filename>conf</filename> directory only. - </para> - - <para> - The following example creates a new workspace layer in your - current working and by default names the workspace layer - "workspace": - <literallayout class='monospaced'> - $ devtool create-workspace - </literallayout> - </para> - - <para> - You can create a workspace layer anywhere by supplying - a pathname with the command. - The following command creates a new workspace layer named - "new-workspace": - <literallayout class='monospaced'> - $ devtool create-workspace /home/scottrif/new-workspace - </literallayout> - </para> - </section> - - <section id='devtool-get-the-status-of-the-recipes-in-your-workspace'> - <title>Get the Status of the Recipes in Your Workspace</title> - - <para> - Use the <filename>devtool status</filename> command to - list the recipes currently in your workspace. - Information includes the paths to their respective - external source trees. - </para> - - <para> - The <filename>devtool status</filename> command has no - command-line options: - <literallayout class='monospaced'> - devtool status - </literallayout> - Following is sample output after using - <link linkend='devtool-adding-a-new-recipe-to-the-workspace'><filename>devtool add</filename></link> - to create and add the <filename>mtr_0.86.bb</filename> recipe - to the <filename>workspace</filename> directory: - <literallayout class='monospaced'> - $ devtool status - mtr: /home/scottrif/poky/build/workspace/sources/mtr (/home/scottrif/poky/build/workspace/recipes/mtr/mtr_0.86.bb) - $ - </literallayout> - </para> - </section> - - <section id='devtool-search-for-available-target-recipes'> - <title>Search for Available Target Recipes</title> - - <para> - Use the <filename>devtool search</filename> command to - search for available target recipes. - The command matches the recipe name, package name, - description, and installed files. - The command displays the recipe name as a result of a - match. - </para> - - <para> - When you use the <filename>devtool search</filename> command, - you must supply a <replaceable>keyword</replaceable>. - The command uses the <replaceable>keyword</replaceable> when - searching for a match. - </para> - </section> - </section> - <section id="using-a-quilt-workflow"> <title>Using Quilt in Your Workflow</title> @@ -2192,4 +1593,62 @@ </note> </section> +<section id="platdev-appdev-devpyshell"> + <title>Using a Development Python Shell</title> + + <para> + Similar to working within a development shell as described in + the previous section, you can also spawn and work within an + interactive Python development shell. + When debugging certain commands or even when just editing packages, + <filename>devpyshell</filename> can be a useful tool. + When you invoke <filename>devpyshell</filename>, all tasks up to and + including + <ulink url='&YOCTO_DOCS_REF_URL;#ref-tasks-patch'><filename>do_patch</filename></ulink> + are run for the specified target. + Then a new terminal is opened. + Additionally, key Python objects and code are available in the same + way they are to BitBake tasks, in particular, the data store 'd'. + So, commands such as the following are useful when exploring the data + store and running functions: + <literallayout class='monospaced'> + pydevshell> d.getVar("STAGING_DIR", True) + '/media/build1/poky/build/tmp/sysroots' + pydevshell> d.getVar("STAGING_DIR", False) + '${TMPDIR}/sysroots' + pydevshell> d.setVar("FOO", "bar") + pydevshell> d.getVar("FOO", True) + 'bar' + pydevshell> d.delVar("FOO") + pydevshell> d.getVar("FOO", True) + pydevshell> bb.build.exec_func("do_unpack", d) + pydevshell> + </literallayout> + The commands execute just as if the OpenEmbedded build system were executing them. + Consequently, working this way can be helpful when debugging a build or preparing + software to be used with the OpenEmbedded build system. + </para> + + <para> + Following is an example that uses <filename>devpyshell</filename> on a target named + <filename>matchbox-desktop</filename>: + <literallayout class='monospaced'> + $ bitbake matchbox-desktop -c devpyshell + </literallayout> + </para> + + <para> + This command spawns a terminal and places you in an interactive + Python interpreter within the OpenEmbedded build environment. + The <ulink url='&YOCTO_DOCS_REF_URL;#var-OE_TERMINAL'><filename>OE_TERMINAL</filename></ulink> + variable controls what type of shell is opened. + </para> + + <para> + When you are finished using <filename>devpyshell</filename>, you + can exit the shell either by using Ctrl+d or closing the terminal + window. + </para> +</section> + </chapter> |