poky/documentation/adt-manual/adt-intro.xml - openbmc/openbmc - Gitiles

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 <!--SPDX-License-Identifier: CC-BY-2.0-UK-->

 <chapter id='adt-intro'>
     <title>The Application Development Toolkit (ADT)</title>

     <para>
         Part of the Yocto Project development solution is an Application Development
         Toolkit (ADT).
         The ADT provides you with a custom-built, cross-development
         platform suited for developing a user-targeted product application.
     </para>

     <para>
         Fundamentally, the ADT consists of the following:
         <itemizedlist>
             <listitem><para>An architecture-specific cross-toolchain and matching
                 sysroot both built by the
                 <ulink url='&YOCTO_DOCS_DEV_URL;#build-system-term'>OpenEmbedded build system</ulink>.
                 The toolchain and sysroot 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 Eclipse IDE Yocto Plug-in.</para></listitem>
             <listitem><para>The Quick EMUlator (QEMU), which lets you simulate target hardware.
                 </para></listitem>
             <listitem><para>Various user-space tools that greatly enhance your application
                 development experience.</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 either by running the ADT Installer
             script, 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>Sysroot</title>

         <para>
             The matching target sysroot contains needed headers and libraries for generating
             binaries that run on the target architecture.
             The 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='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
             "<ulink url='&YOCTO_DOCS_DEV_URL;#adt-eclipse'>Working Within Eclipse</ulink>" section
             of the Yocto Project Development Manual.
         </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 made available a number of ways:
             <itemizedlist>
                 <listitem><para>
                     If you use the ADT Installer script to install ADT, you can
                     specify whether or not to install QEMU.
                     </para></listitem>
                 <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='user-space-tools'>
         <title>User-Space Tools</title>

         <para>
             User-space tools are included as part of the Yocto Project.
             You will find these tools helpful during development.
             The tools include LatencyTOP, PowerTOP, OProfile, 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>OProfile:</emphasis> A system-wide profiler for Linux
                     systems that is capable of profiling all running code at low overhead.
                     You can find out more about OProfile at
                     <ulink url='http://oprofile.sourceforge.net/about/'></ulink>.
                     For examples on how to setup and use this tool, see the
                     "<ulink url='&YOCTO_DOCS_PROF_URL;#profile-manual-oprofile'>OProfile</ulink>"
                     section in the Yocto Project Profiling and Tracing Manual.
                     </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>

 </chapter>
 <!--
 vim: expandtab tw=80 ts=4
 -->
	<!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; ] >
	<!--SPDX-License-Identifier: CC-BY-2.0-UK-->

	<chapter id='adt-intro'>
	<title>The Application Development Toolkit (ADT)</title>

	<para>
	Part of the Yocto Project development solution is an Application Development
	Toolkit (ADT).
	The ADT provides you with a custom-built, cross-development
	platform suited for developing a user-targeted product application.
	</para>

	<para>
	Fundamentally, the ADT consists of the following:
	<itemizedlist>
	<listitem><para>An architecture-specific cross-toolchain and matching
	sysroot both built by the
	<ulink url='&YOCTO_DOCS_DEV_URL;#build-system-term'>OpenEmbedded build system</ulink>.
	The toolchain and sysroot 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 Eclipse IDE Yocto Plug-in.</para></listitem>
	<listitem><para>The Quick EMUlator (QEMU), which lets you simulate target hardware.
	</para></listitem>
	<listitem><para>Various user-space tools that greatly enhance your application
	development experience.</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 either by running the ADT Installer
	script, 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>Sysroot</title>

	<para>
	The matching target sysroot contains needed headers and libraries for generating
	binaries that run on the target architecture.
	The 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='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
	"<ulink url='&YOCTO_DOCS_DEV_URL;#adt-eclipse'>Working Within Eclipse</ulink>" section
	of the Yocto Project Development Manual.
	</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 made available a number of ways:
	<itemizedlist>
	<listitem><para>
	If you use the ADT Installer script to install ADT, you can
	specify whether or not to install QEMU.
	</para></listitem>
	<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='user-space-tools'>
	<title>User-Space Tools</title>

	<para>
	User-space tools are included as part of the Yocto Project.
	You will find these tools helpful during development.
	The tools include LatencyTOP, PowerTOP, OProfile, 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>OProfile:</emphasis> A system-wide profiler for Linux
	systems that is capable of profiling all running code at low overhead.
	You can find out more about OProfile at
	<ulink url='http://oprofile.sourceforge.net/about/'></ulink>.
	For examples on how to setup and use this tool, see the
	"<ulink url='&YOCTO_DOCS_PROF_URL;#profile-manual-oprofile'>OProfile</ulink>"
	section in the Yocto Project Profiling and Tracing Manual.
	</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>

	</chapter>
	<!--
	vim: expandtab tw=80 ts=4
	-->