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diff --git a/yocto-poky/documentation/sdk-manual/sdk-intro.xml b/yocto-poky/documentation/sdk-manual/sdk-intro.xml deleted file mode 100644 index 88ae77831..000000000 --- a/yocto-poky/documentation/sdk-manual/sdk-intro.xml +++ /dev/null @@ -1,338 +0,0 @@ -<!DOCTYPE chapter PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" -"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd" -[<!ENTITY % poky SYSTEM "../poky.ent"> %poky; ] > - -<chapter id='sdk-intro'> -<title>Introduction</title> - -<section id='sdk-manual-intro'> - <title>Introduction</title> - - <para> - Welcome to the Yocto Project Software Development Kit (SDK) - Developer's Guide. - This manual provides information that lets you use both the standard - Yocto Project SDK and an extensible SDK to develop applications and - images using the Yocto Project. - Additionally, the manual also provides information on how to use - the popular <trademark class='trade'>Eclipse</trademark> IDE as part - of your application development workflow. - </para> - - <para> - Prior to the 2.0 Release of the Yocto Project, application - development was primarily accomplished through the use of the - Application Development Toolkit (ADT) and the availability - of stand-alone cross-development toolchains and other tools. - With the 2.1 Release of the Yocto Project, application development - has transitioned to within a more traditional SDK and extensible - SDK. - </para> - - <para> - A standard SDK consists of a cross-development toolchain that contains - a compiler, debugger, and various miscellaneous tools; libraries, - headers, and symbols to match an image; and environment setup script. - You can use this SDK to independently develop and test code that is - destined to run on some target machine. - </para> - - <para> - An extensible SDK consists of everything that the standard SDK has plus - tools that allow you to easily add new applications and libraries to - an image, modify the source of an existing component, test changes on - the target hardware, and easily integrate an application into the - <ulink url='&YOCTO_DOCS_DEV_URL;#build-system-term'>OpenEmbedded build system</ulink>. - </para> - - <para> - SDKs are completely self-contained. - The binaries are linked against their own copy of - <filename>libc</filename>, which results in no dependencies - on the target system. - To achieve this, the pointer to the dynamic loader is - configured at install time since that path cannot be dynamically - altered. - This is the reason for a wrapper around the - <filename>populate_sdk</filename> and - <filename>populate_sdk_ext</filename> archives. - </para> - - <para> - Another feature for the SDKs is that only one set of cross-canadian - toolchain binaries are produced per architecture. - This feature takes advantage of the fact that the target hardware can - be passed to <filename>gcc</filename> as a set of compiler options. - Those options are set up by the environment script and contained in - variables such as - <ulink url='&YOCTO_DOCS_REF_URL;#var-CC'><filename>CC</filename></ulink> - and - <ulink url='&YOCTO_DOCS_REF_URL;#var-LD'><filename>LD</filename></ulink>. - This reduces the space needed for the tools. - Understand, however, that a sysroot is still needed for every target - since those binaries are target-specific. - </para> - - <para> - Going beyond the actual SDK, the SDK development environment consists - of the following: - <itemizedlist> - <listitem><para>An architecture-specific cross-toolchain and - matching sysroots (target and native) all built by the - OpenEmbedded build system. - The toolchain and sysroots are based on a - <ulink url='&YOCTO_DOCS_DEV_URL;#metadata'>Metadata</ulink> - configuration and extensions, - which allows you to cross-develop on the host machine for the - target hardware. - </para></listitem> - <listitem><para>The Quick EMUlator (QEMU), which lets you simulate - target hardware. - QEMU is not literally part of the SDK. - You must build and include this emulator separately. - However, QEMU plays an important role in the development - process that revolves around use of and SDK. - </para></listitem> - <listitem><para>The Eclipse IDE Yocto Plug-in. - This plug-in is also available for you if you are an Eclipse - user. - In the same manner as QEMU, the plug-in is not literally part - of the SDK but is rather available for use as part of the - development process. - </para></listitem> - <listitem><para>Various user-space tools that greatly enhance - your application development experience. - These tools are also separate from the actual SDK but can be - independently obtained and used in the development process. - </para></listitem> - </itemizedlist> - </para> - - <section id='the-cross-development-toolchain'> - <title>The Cross-Development Toolchain</title> - - <para> - The - <ulink url='&YOCTO_DOCS_DEV_URL;#cross-development-toolchain'>Cross-Development Toolchain</ulink> - consists of a cross-compiler, cross-linker, and cross-debugger - that are used to develop user-space applications for targeted - hardware. - This toolchain is created by running a toolchain installer script - or through a - <ulink url='&YOCTO_DOCS_DEV_URL;#build-directory'>Build Directory</ulink> - that is based on your Metadata configuration or extension for - your targeted device. - The cross-toolchain works with a matching target sysroot. - </para> - </section> - - <section id='sysroot'> - <title>Sysroots</title> - - <para> - The native and target sysroots contain needed headers and libraries - for generating binaries that run on the target architecture. - The target sysroot is based on the target root filesystem image - that is built by the OpenEmbedded build system and uses the same - Metadata configuration used to build the cross-toolchain. - </para> - </section> - - <section id='the-qemu-emulator'> - <title>The QEMU Emulator</title> - - <para> - The QEMU emulator allows you to simulate your hardware while - running your application or image. - QEMU is not part of the SDK but is made available a number of ways: - <itemizedlist> - <listitem><para> - If you have cloned the <filename>poky</filename> Git - repository to create a - <ulink url='&YOCTO_DOCS_DEV_URL;#source-directory'>Source Directory</ulink> - and you have sourced the environment setup script, QEMU is - installed and automatically available. - </para></listitem> - <listitem><para> - If you have downloaded a Yocto Project release and unpacked - it to create a - <ulink url='&YOCTO_DOCS_DEV_URL;#source-directory'>Source Directory</ulink> - and you have sourced the environment setup script, QEMU is - installed and automatically available. - </para></listitem> - <listitem><para> - If you have installed the cross-toolchain tarball and you - have sourced the toolchain's setup environment script, QEMU - is also installed and automatically available. - </para></listitem> - </itemizedlist> - </para> - </section> - - <section id='eclipse-overview'> - <title>Eclipse Yocto Plug-in</title> - - <para> - The Eclipse IDE is a popular development environment and it fully - supports development using the Yocto Project. - When you install and configure the Eclipse Yocto Project Plug-in - into the Eclipse IDE, you maximize your Yocto Project experience. - Installing and configuring the Plug-in results in an environment - that has extensions specifically designed to let you more easily - develop software. - These extensions allow for cross-compilation, deployment, and - execution of your output into a QEMU emulation session. - You can also perform cross-debugging and profiling. - The environment also supports a suite of tools that allows you to - perform remote profiling, tracing, collection of power data, - collection of latency data, and collection of performance data. - </para> - - <para> - For information about the application development workflow that - uses the Eclipse IDE and for a detailed example of how to install - and configure the Eclipse Yocto Project Plug-in, see the - "<link link='sdk-developing-applications-using-eclipse'>Developing Applications Using <trademark class='trade'>Eclipse</trademark></link>" - section. - </para> - </section> - - <section id='user-space-tools'> - <title>User-Space Tools</title> - - <para> - User-space tools are available as part of the SDK development - process and can be helpful. - The tools include LatencyTOP, PowerTOP, Perf, SystemTap, - and Lttng-ust. - These tools are common development tools for the Linux platform. - <itemizedlist> - <listitem><para><emphasis>LatencyTOP:</emphasis> LatencyTOP - focuses on latency that causes skips in audio, stutters in - your desktop experience, or situations that overload your - server even when you have plenty of CPU power left. - </para></listitem> - <listitem><para><emphasis>PowerTOP:</emphasis> Helps you - determine what software is using the most power. - You can find out more about PowerTOP at - <ulink url='https://01.org/powertop/'></ulink>.</para></listitem> - <listitem><para><emphasis>Perf:</emphasis> Performance counters - for Linux used to keep track of certain types of hardware - and software events. - For more information on these types of counters see - <ulink url='https://perf.wiki.kernel.org/'></ulink>. - For examples on how to setup and use this tool, see the - "<ulink url='&YOCTO_DOCS_PROF_URL;#profile-manual-perf'>perf</ulink>" - section in the Yocto Project Profiling and Tracing Manual. - </para></listitem> - <listitem><para><emphasis>SystemTap:</emphasis> A free software - infrastructure that simplifies information gathering about - a running Linux system. - This information helps you diagnose performance or - functional problems. - SystemTap is not available as a user-space tool through - the Eclipse IDE Yocto Plug-in. - See <ulink url='http://sourceware.org/systemtap'></ulink> - for more information on SystemTap. - For examples on how to setup and use this tool, see the - "<ulink url='&YOCTO_DOCS_PROF_URL;#profile-manual-systemtap'>SystemTap</ulink>" - section in the Yocto Project Profiling and Tracing Manual. - </para></listitem> - <listitem><para><emphasis>Lttng-ust:</emphasis> A User-space - Tracer designed to provide detailed information on - user-space activity. - See <ulink url='http://lttng.org/ust'></ulink> for more - information on Lttng-ust. - </para></listitem> - </itemizedlist> - </para> - </section> -</section> - -<section id='sdk-development-model'> - <title>SDK Development Model</title> - - <para> - Fundamentally, the SDK fits into the development process as follows: - <imagedata fileref="figures/sdk-environment.png" align="center" width="6in" depth="5in" scalefit="100" /> - The SDK is installed on any machine and can be used to develop - applications, images, and kernels. - An SDK can even be used by a QA Engineer or Release Engineer. - The fundamental concept is that the machine that has the SDK installed - does not have to be associated with the machine that has the - Yocto Project installed. - A developer can independently compile and test an object on their - machine and then, when the object is ready for integration into an - image, they can simply make it available to the machine that has the - the Yocto Project. - Once the object is available, the image can be rebuilt using the - Yocto Project to produce the modified image. - </para> - - <para> - You just need to follow these general steps: - <orderedlist> - <listitem><para><emphasis>Install the SDK for your target hardware:</emphasis> - For information on how to install the SDK, see the - "<link url='sdk-installing-the-sdk'>Installing the SDK</link>" - section.</para></listitem> - <listitem><para><emphasis>Download the Target Image:</emphasis> - The Yocto Project supports several target architectures - and has many pre-built kernel images and root filesystem - images.</para> - <para>If you are going to develop your application on - hardware, go to the - <ulink url='&YOCTO_MACHINES_DL_URL;'><filename>machines</filename></ulink> - download area and choose a target machine area - from which to download the kernel image and root filesystem. - This download area could have several files in it that - support development using actual hardware. - For example, the area might contain - <filename>.hddimg</filename> files that combine the - kernel image with the filesystem, boot loaders, and - so forth. - Be sure to get the files you need for your particular - development process.</para> - <para>If you are going to develop your application and - then run and test it using the QEMU emulator, go to the - <ulink url='&YOCTO_QEMU_DL_URL;'><filename>machines/qemu</filename></ulink> - download area. - From this area, go down into the directory for your - target architecture (e.g. <filename>qemux86_64</filename> - for an <trademark class='registered'>Intel</trademark>-based - 64-bit architecture). - Download kernel, root filesystem, and any other files you - need for your process. - <note>In order to use the root filesystem in QEMU, you - need to extract it. - See the - "<link url='sdk-extracting-the-root-filesystem'>Extracting the Root Filesystem</link>" - section for information on how to extract the root - filesystem.</note></para></listitem> - <listitem><para><emphasis>Develop and Test your - Application:</emphasis> At this point, you have the tools - to develop your application. - If you need to separately install and use the QEMU - emulator, you can go to - <ulink url='http://wiki.qemu.org/Main_Page'>QEMU Home Page</ulink> - to download and learn about the emulator. - You can see the - "<ulink url='&YOCTO_DOCS_DEV_URL;#dev-manual-qemu'>Using the Quick EMUlator (QEMU)</ulink>" - chapter in the Yocto Project Development Manual - for information on using QEMU within the Yocto - Project.</para></listitem> - </orderedlist> - </para> - - <para> - The remainder of this manual describes how to use both the standard - SDK and the extensible SDK. - Information also exists in appendix form that describes how you can - build, install, and modify an SDK. - </para> -</section> - -</chapter> -<!-- -vim: expandtab tw=80 ts=4 ---> |