Blame - yocto-poky/documentation/sdk-manual/sdk-using.xml - openbmc/openbmc

poky-glibc-<replaceable>host_system</replaceable>-<replaceable>image_type</replaceable>-<replaceable>arch</replaceable>-toolchain-<replaceable>release_version</replaceable>.sh

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Where:

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<replaceable>host_system</replaceable> is a string representing your development system:

i686 or x86_64.

<replaceable>image_type</replaceable> is the image for which the SDK was built.

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<replaceable>arch</replaceable> is a string representing the tuned target architecture:

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i586, x86_64, powerpc, mips, armv7a or armv5te

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<replaceable>release_version</replaceable> is a string representing the release number of the

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Yocto Project:

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&DISTRO;, &DISTRO;+snapshot

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</literallayout>

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For example, the following toolchain installer is for a 64-bit

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development host system and a i586-tuned target architecture

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based off the SDK for <filename>core-image-sato</filename> and

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using the current &DISTRO; snapshot:

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poky-glibc-x86_64-core-image-sato-i586-toolchain-&DISTRO;.sh

</literallayout>

</para>

<para>

The SDK and toolchains are self-contained and by default are installed

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into <filename>/opt/poky</filename>.

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However, when you run the SDK installer, you can choose an

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installation directory.

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<note>

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You must change the permissions on the toolchain

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installer script so that it is executable:

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$ chmod +x poky-glibc-x86_64-core-image-sato-i586-toolchain-2.1.sh

</literallayout>

</note>

</para>

<para>

The following command shows how to run the installer given a

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toolchain tarball for a 64-bit x86 development host system and

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a 32-bit x86 target architecture.

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The example assumes the toolchain installer is located in

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<filename>~/Downloads/</filename>.

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<note>

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If you do not have write permissions for the directory

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into which you are installing the SDK, the installer

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notifies you and exits.

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Be sure you have write permissions in the directory and

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run the installer again.

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</note>

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$ ./poky-glibc-x86_64-core-image-sato-i586-toolchain-2.1.sh

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Poky (Yocto Project Reference Distro) SDK installer version 2.0

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===============================================================

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Enter target directory for SDK (default: /opt/poky/2.1):

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You are about to install the SDK to "/opt/poky/2.1". Proceed[Y/n]? Y

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Extracting SDK.......................................................................done

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Setting it up...done

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SDK has been successfully set up and is ready to be used.

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Each time you wish to use the SDK in a new shell session, you need to source the environment setup script e.g.

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$ . /opt/poky/2.1/environment-setup-i586-poky-linux

</literallayout>

</para>

<para>

Again, reference the

"<link linkend='sdk-installed-standard-sdk-directory-structure'>Installed Standard SDK Directory Structure</link>"

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section for more details on the resulting directory structure of

the installed SDK.

</para>

</section>

<title>Running the SDK Environment Setup Script</title>

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<para>

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Once you have the SDK installed, you must run the SDK environment

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setup script before you can actually use it.

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This setup script resides in the directory you chose when you installed

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the SDK.

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For information on where this setup script can reside, see the

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"<link linkend='sdk-appendix-obtain'>Obtaining the SDK</link>"

Appendix.

</para>

<para>

Before running the script, be sure it is the one that matches the

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architecture for which you are developing.

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Environment setup scripts begin with the string

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"<filename>environment-setup</filename>" and include as part of their

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name the tuned target architecture.

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For example, the command to source a setup script for an IA-based

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target machine using i586 tuning and located in the default SDK

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installation directory is as follows:

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$ source /opt/poky/&DISTRO;/environment-setup-i586-poky-linux

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</literallayout>

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When you run the setup script, many environment variables are

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defined:

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<ulink url='&YOCTO_DOCS_REF_URL;#var-SDKTARGETSYSROOT'><filename>SDKTARGETSYSROOT</filename></ulink> - The path to the sysroot used for cross-compilation

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<ulink url='&YOCTO_DOCS_REF_URL;#var-PKG_CONFIG_PATH'><filename>PKG_CONFIG_PATH</filename></ulink> - The path to the target pkg-config files

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<ulink url='&YOCTO_DOCS_REF_URL;#var-CONFIG_SITE'><filename>CONFIG_SITE</filename></ulink> - A GNU autoconf site file preconfigured for the target

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<ulink url='&YOCTO_DOCS_REF_URL;#var-CC'><filename>CC</filename></ulink> - The minimal command and arguments to run the C compiler

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<ulink url='&YOCTO_DOCS_REF_URL;#var-CXX'><filename>CXX</filename></ulink> - The minimal command and arguments to run the C++ compiler

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<ulink url='&YOCTO_DOCS_REF_URL;#var-CPP'><filename>CPP</filename></ulink> - The minimal command and arguments to run the C preprocessor

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<ulink url='&YOCTO_DOCS_REF_URL;#var-AS'><filename>AS</filename></ulink> - The minimal command and arguments to run the assembler

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<ulink url='&YOCTO_DOCS_REF_URL;#var-LD'><filename>LD</filename></ulink> - The minimal command and arguments to run the linker

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<ulink url='&YOCTO_DOCS_REF_URL;#var-GDB'><filename>GDB</filename></ulink> - The minimal command and arguments to run the GNU Debugger

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<ulink url='&YOCTO_DOCS_REF_URL;#var-STRIP'><filename>STRIP</filename></ulink> - The minimal command and arguments to run 'strip', which strips symbols

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<ulink url='&YOCTO_DOCS_REF_URL;#var-RANLIB'><filename>RANLIB</filename></ulink> - The minimal command and arguments to run 'ranlib'

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<ulink url='&YOCTO_DOCS_REF_URL;#var-OBJCOPY'><filename>OBJCOPY</filename></ulink> - The minimal command and arguments to run 'objcopy'

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<ulink url='&YOCTO_DOCS_REF_URL;#var-OBJDUMP'><filename>OBJDUMP</filename></ulink> - The minimal command and arguments to run 'objdump'

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<ulink url='&YOCTO_DOCS_REF_URL;#var-AR'><filename>AR</filename></ulink> - The minimal command and arguments to run 'ar'

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<ulink url='&YOCTO_DOCS_REF_URL;#var-NM'><filename>NM</filename></ulink> - The minimal command and arguments to run 'nm'

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<ulink url='&YOCTO_DOCS_REF_URL;#var-TARGET_PREFIX'><filename>TARGET_PREFIX</filename></ulink> - The toolchain binary prefix for the target tools

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<ulink url='&YOCTO_DOCS_REF_URL;#var-CROSS_COMPILE'><filename>CROSS_COMPILE</filename></ulink> - The toolchain binary prefix for the target tools

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<ulink url='&YOCTO_DOCS_REF_URL;#var-CONFIGURE_FLAGS'><filename>CONFIGURE_FLAGS</filename></ulink> - The minimal arguments for GNU configure

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<ulink url='&YOCTO_DOCS_REF_URL;#var-CFLAGS'><filename>CFLAGS</filename></ulink> - Suggested C flags

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<ulink url='&YOCTO_DOCS_REF_URL;#var-CXXFLAGS'><filename>CXXFLAGS</filename></ulink> - Suggested C++ flags

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<ulink url='&YOCTO_DOCS_REF_URL;#var-LDFLAGS'><filename>LDFLAGS</filename></ulink> - Suggested linker flags when you use CC to link

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<ulink url='&YOCTO_DOCS_REF_URL;#var-CPPFLAGS'><filename>CPPFLAGS</filename></ulink> - Suggested preprocessor flags

</literallayout>

</para>

</section>

<title>Autotools-Based Projects</title>

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<para>

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Once you have a suitable cross-toolchain installed, it is very easy to

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develop a project outside of the OpenEmbedded build system.

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This section presents a simple "Helloworld" example that shows how

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to set up, compile, and run the project.

</para>

<title>Creating and Running a Project Based on GNU Autotools</title>

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<para>

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Follow these steps to create a simple Autotools-based project:

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<listitem><para><emphasis>Create your directory:</emphasis>

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Create a clean directory for your project and then make

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that directory your working location:

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$ mkdir $HOME/helloworld

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$ cd $HOME/helloworld

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</literallayout></para></listitem>

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<listitem><para><emphasis>Populate the directory:</emphasis>

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Create <filename>hello.c</filename>, <filename>Makefile.am</filename>,

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and <filename>configure.in</filename> files as follows:

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<listitem><para>For <filename>hello.c</filename>, include

these lines:

#include <stdio.h>

main()

{

printf("Hello World!\n");

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}

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</literallayout></para></listitem>

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<listitem><para>For <filename>Makefile.am</filename>,

include these lines:

bin_PROGRAMS = hello

hello_SOURCES = hello.c

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</literallayout></para></listitem>

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<listitem><para>For <filename>configure.in</filename>,

include these lines:

AC_INIT(hello.c)

AM_INIT_AUTOMAKE(hello,0.1)

AC_PROG_CC

AC_PROG_INSTALL

AC_OUTPUT(Makefile)

</literallayout></para></listitem>

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</itemizedlist></para></listitem>

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<listitem><para><emphasis>Source the cross-toolchain

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environment setup file:</emphasis>

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Installation of the cross-toolchain creates a cross-toolchain

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environment setup script in the directory that the SDK

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was installed.

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Before you can use the tools to develop your project, you must

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source this setup script.

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The script begins with the string "environment-setup" and contains

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the machine architecture, which is followed by the string

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"poky-linux".

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Here is an example that sources a script from the

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default SDK installation directory that uses the

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32-bit Intel x86 Architecture and the

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&DISTRO_NAME; Yocto Project release:

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$ source /opt/poky/&DISTRO;/environment-setup-i586-poky-linux

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</literallayout></para></listitem>

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<listitem><para><emphasis>Generate the local aclocal.m4

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files and create the configure script:</emphasis>

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The following GNU Autotools generate the local

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<filename>aclocal.m4</filename> files and create the

configure script:

$ aclocal

$ autoconf

</literallayout></para></listitem>

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<listitem><para><emphasis>Generate files needed by GNU

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coding standards:</emphasis>

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GNU coding standards require certain files in order for the

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project to be compliant.

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This command creates those files:

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$ touch NEWS README AUTHORS ChangeLog

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</literallayout></para></listitem>

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<listitem><para><emphasis>Generate the configure

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file:</emphasis>

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This command generates the <filename>configure</filename>:

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$ automake -a

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</literallayout></para></listitem>

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<listitem><para><emphasis>Cross-compile the project:</emphasis>

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This command compiles the project using the cross-compiler.

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The

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<ulink url='&YOCTO_DOCS_REF_URL;#var-CONFIGURE_FLAGS'><filename>CONFIGURE_FLAGS</filename></ulink>

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environment variable provides the minimal arguments for

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GNU configure:

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$ ./configure ${CONFIGURE_FLAGS}

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</literallayout></para></listitem>

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<listitem><para><emphasis>Make and install the project:</emphasis>

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These two commands generate and install the project into the

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destination directory:

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$ make

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$ make install DESTDIR=./tmp

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</literallayout></para></listitem>

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<listitem><para><emphasis>Verify the installation:</emphasis>

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This command is a simple way to verify the installation

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of your project.

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Running the command prints the architecture on which

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the binary file can run.

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This architecture should be the same architecture that

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the installed cross-toolchain supports.

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$ file ./tmp/usr/local/bin/hello

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</literallayout></para></listitem>

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<listitem><para><emphasis>Execute your project:</emphasis>

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To execute the project in the shell, simply enter the name.

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You could also copy the binary to the actual target hardware

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and run the project there as well:

$ ./hello

</literallayout>

As expected, the project displays the "Hello World!" message.

</para></listitem>

</orderedlist>

</para>

</section>

<title>Passing Host Options</title>

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<para>

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For an Autotools-based project, you can use the cross-toolchain by just

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passing the appropriate host option to <filename>configure.sh</filename>.

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The host option you use is derived from the name of the environment setup

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script found in the directory in which you installed the cross-toolchain.

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For example, the host option for an ARM-based target that uses the GNU EABI

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is <filename>armv5te-poky-linux-gnueabi</filename>.

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You will notice that the name of the script is

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<filename>environment-setup-armv5te-poky-linux-gnueabi</filename>.

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Thus, the following command works to update your project and

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rebuild it using the appropriate cross-toolchain tools:

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$ ./configure --host=armv5te-poky-linux-gnueabi \

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--with-libtool-sysroot=<replaceable>sysroot_dir</replaceable>

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</literallayout>

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<note>

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If the <filename>configure</filename> script results in problems recognizing the

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<filename>--with-libtool-sysroot=</filename><replaceable>sysroot-dir</replaceable> option,

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regenerate the script to enable the support by doing the following and then

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run the script again:

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$ libtoolize --automake

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$ aclocal -I ${OECORE_NATIVE_SYSROOT}/usr/share/aclocal \

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[-I <replaceable>dir_containing_your_project-specific_m4_macros</replaceable>]

$ autoconf

$ autoheader

$ automake -a

</literallayout>

</note>

</para>

</section>

</section>

<title>Makefile-Based Projects</title>

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<para>

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For Makefile-based projects, the cross-toolchain environment variables

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established by running the cross-toolchain environment setup script

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are subject to general <filename>make</filename> rules.

</para>

<para>

To illustrate this, consider the following four cross-toolchain

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environment variables:

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<ulink url='&YOCTO_DOCS_REF_URL;#var-CC'>CC</ulink>=i586-poky-linux-gcc -m32 -march=i586 --sysroot=/opt/poky/1.8/sysroots/i586-poky-linux

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<ulink url='&YOCTO_DOCS_REF_URL;#var-LD'>LD</ulink>=i586-poky-linux-ld --sysroot=/opt/poky/1.8/sysroots/i586-poky-linux

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<ulink url='&YOCTO_DOCS_REF_URL;#var-CFLAGS'>CFLAGS</ulink>=-O2 -pipe -g -feliminate-unused-debug-types

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<ulink url='&YOCTO_DOCS_REF_URL;#var-CXXFLAGS'>CXXFLAGS</ulink>=-O2 -pipe -g -feliminate-unused-debug-types

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</literallayout>

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Now, consider the following three cases:

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<listitem><para><emphasis>Case 1 - No Variables Set in the <filename>Makefile</filename>:</emphasis>

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Because these variables are not specifically set in the

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<filename>Makefile</filename>, the variables retain their

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values based on the environment.

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</para></listitem>

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<listitem><para><emphasis>Case 2 - Variables Set in the <filename>Makefile</filename>:</emphasis>

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Specifically setting variables in the

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<filename>Makefile</filename> during the build results in the

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environment settings of the variables being overwritten.

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</para></listitem>

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<listitem><para><emphasis>Case 3 - Variables Set when the <filename>Makefile</filename> is Executed from the Command Line:</emphasis>

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Executing the <filename>Makefile</filename> from the command

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line results in the variables being overwritten with

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command-line content regardless of what is being set in the

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<filename>Makefile</filename>.

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In this case, environment variables are not considered unless

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you use the "-e" flag during the build:

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$ make -e <replaceable>file</replaceable>

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</literallayout>

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If you use this flag, then the environment values of the

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variables override any variables specifically set in the

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<filename>Makefile</filename>.

</para></listitem>

</itemizedlist>

<note>

For the list of variables set up by the cross-toolchain environment

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setup script, see the

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"<link linkend='sdk-running-the-sdk-environment-setup-script'>Running the SDK Environment Setup Script</link>"

section.

</note>

</para>

</section>

<title>Developing Applications Using <trademark class='trade'>Eclipse</trademark></title>

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<para>

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If you are familiar with the popular Eclipse IDE, you can use an

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Eclipse Yocto Plug-in to allow you to develop, deploy, and test your

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application all from within Eclipse.

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This section describes general workflow using the SDK and Eclipse

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and how to configure and set up Eclipse.

</para>

<title>Workflow Using <trademark class='trade'>Eclipse</trademark></title>

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<para>

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The following figure and supporting list summarize the application

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development general workflow that employs both the SDK Eclipse.

</para>

<para>

<imagedata fileref="figures/sdk-eclipse-dev-flow.png"

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width="7in" depth="7in" align="center" scale="100" />

</para>

<para>

<listitem><para><emphasis>Prepare the host system for the Yocto Project</emphasis>:

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See

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"<ulink url='&YOCTO_DOCS_REF_URL;#detailed-supported-distros'>Supported Linux Distributions</ulink>"

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and

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"<ulink url='&YOCTO_DOCS_REF_URL;#required-packages-for-the-host-development-system'>Required Packages for the Host Development System</ulink>" sections both

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in the Yocto Project Reference Manual for requirements.

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In particular, be sure your host system has the

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<filename>xterm</filename> package installed.

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</para></listitem>

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<listitem><para><emphasis>Secure the Yocto Project kernel target image</emphasis>:

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You must have a target kernel image that has been built using the OpenEmbedded

464

build system.</para>

465

<para>Depending on whether the Yocto Project has a pre-built image that matches your target

466

architecture and where you are going to run the image while you develop your application

467

(QEMU or real hardware), the area from which you get the image differs.

468

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<listitem><para>Download the image from

470

<ulink url='&YOCTO_MACHINES_DL_URL;'><filename>machines</filename></ulink>

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if your target architecture is supported and you are going to develop

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and test your application on actual hardware.</para></listitem>

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<listitem><para>Download the image from

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<filename>machines/qemu</filename></ulink> if your target architecture is supported

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and you are going to develop and test your application using the QEMU

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emulator.</para></listitem>

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<listitem><para>Build your image if you cannot find a pre-built image that matches

479

your target architecture.

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If your target architecture is similar to a supported architecture, you can

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modify the kernel image before you build it.

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See the

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"<ulink url='&YOCTO_DOCS_DEV_URL;#patching-the-kernel'>Patching the Kernel</ulink>"

484

section in the Yocto Project Development

485

manual for an example.</para></listitem>

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</itemizedlist></para>

487

<para>For information on pre-built kernel image naming schemes for images

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that can run on the QEMU emulator, see the

489

<ulink url='&YOCTO_DOCS_SDK_URL;#sdk-manual'>Yocto Project Software Development Kit (SDK) Developer's Guide</ulink>.

490

</para></listitem>

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<listitem><para><emphasis>Install the SDK</emphasis>:

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The SDK provides a target-specific cross-development toolchain, the root filesystem,

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the QEMU emulator, and other tools that can help you develop your application.

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For information on how to install the SDK, see the

495

"<link linkend='sdk-installing-the-sdk'>Installing the SDK</link>"

496

section.

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</para></listitem>

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<listitem><para><emphasis>Secure the target root filesystem

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and the Cross-development toolchain</emphasis>:

500

You need to find and download the appropriate root filesystem and

501

the cross-development toolchain.</para>

502

<para>You can find the tarballs for the root filesystem in the same area used

503

for the kernel image.

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Depending on the type of image you are running, the root filesystem you need differs.

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For example, if you are developing an application that runs on an image that

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supports Sato, you need to get a root filesystem that supports Sato.</para>

507

<para>You can find the cross-development toolchains at

508

<ulink url='&YOCTO_TOOLCHAIN_DL_URL;'><filename>toolchains</filename></ulink>.

509

Be sure to get the correct toolchain for your development host and your

510

target architecture.

511

See the "<link linkend='sdk-locating-pre-built-sdk-installers'>Locating Pre-Built SDK Installers</link>"

512

section for information and the

513

"<link linkend='sdk-installing-the-sdk'>Installing the SDK</link>"

514

section for installation information.

515

</para></listitem>

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<listitem><para><emphasis>Create and build your application</emphasis>:

517

At this point, you need to have source files for your application.

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Once you have the files, you can use the Eclipse IDE to import them and build the

519

project.

520

If you are not using Eclipse, you need to use the cross-development tools you have

521

installed to create the image.</para></listitem>

522

<listitem><para><emphasis>Deploy the image with the application</emphasis>:

523

If you are using the Eclipse IDE, you can deploy your image to the hardware or to

524

QEMU through the project's preferences.

525

If you are not using the Eclipse IDE, then you need to deploy the application

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to the hardware using other methods.

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Or, if you are using QEMU, you need to use that tool and

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load your image in for testing.

529

See the

530

"<ulink url='&YOCTO_DOCS_DEV_URL;#dev-manual-qemu'>Using the Quick EMUlator (QEMU)</ulink>"

531

chapter in the Yocto Project Development Manual

532

for information on using QEMU.

533

</para></listitem>

534

<listitem><para><emphasis>Test and debug the application</emphasis>:

535

Once your application is deployed, you need to test it.

536

Within the Eclipse IDE, you can use the debugging environment along with the

537

set of installed user-space tools to debug your application.

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Of course, the same user-space tools are available separately if you choose

539

not to use the Eclipse IDE.</para></listitem>

</orderedlist>

</para>

</section>

<title>Working Within Eclipse</title>

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547

<para>

548

The Eclipse IDE is a popular development environment and it fully

549

supports development using the Yocto Project.

550

<note>

551

This release of the Yocto Project supports both the Luna

552

and Kepler versions of the Eclipse IDE.

553

Thus, the following information provides setup information for

both versions.

</note>

</para>

<para>

When you install and configure the Eclipse Yocto Project Plug-in

560

into the Eclipse IDE, you maximize your Yocto Project experience.

561

Installing and configuring the Plug-in results in an environment

562

that has extensions specifically designed to let you more easily

563

develop software.

564

These extensions allow for cross-compilation, deployment, and

565

execution of your output into a QEMU emulation session as well as

566

actual target hardware.

567

You can also perform cross-debugging and profiling.

568

The environment also supports a suite of tools that allows you

569

to perform remote profiling, tracing, collection of power data,

570

collection of latency data, and collection of performance data.

</para>

<para>

This section describes how to install and configure the Eclipse IDE

575

Yocto Plug-in and how to use it to develop your application.

</para>

<title>Setting Up the Eclipse IDE</title>

580

581

<para>

582

To develop within the Eclipse IDE, you need to do the following:

583

584

<listitem><para>Install the optimal version of the Eclipse

585

IDE.</para></listitem>

586

<listitem><para>Configure the Eclipse IDE.

587

</para></listitem>

588

<listitem><para>Install the Eclipse Yocto Plug-in.

589

</para></listitem>

590

<listitem><para>Configure the Eclipse Yocto Plug-in.

</para></listitem>

</orderedlist>

<note>

Do not install Eclipse from your distribution's package

595

repository.

596

Be sure to install Eclipse from the official Eclipse

597

download site as directed in the next section.

</note>

</para>

<title>Installing the Eclipse IDE</title>

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604

<para>

605

It is recommended that you have the Luna SR2 (4.4.2)

606

version of the Eclipse IDE installed on your development

607

system.

608

However, if you currently have the Kepler 4.3.2 version

609

installed and you do not want to upgrade the IDE, you can

610

configure Kepler to work with the Yocto Project.

</para>

<para>

If you do not have the Luna SR2 (4.4.2) Eclipse IDE

615

installed, you can find the tarball at

616

<ulink url='&ECLIPSE_MAIN_URL;'></ulink>.

617

From that site, choose the appropriate download from the

618

"Eclipse IDE for C/C++ Developers".

619

This version contains the Eclipse Platform, the Java

620

Development Tools (JDT), and the Plug-in Development

Environment.

</para>

<para>

Once you have downloaded the tarball, extract it into a

626

clean directory.

627

For example, the following commands unpack and install the

628

downloaded Eclipse IDE tarball into a clean directory

629

using the default name <filename>eclipse</filename>:

630

631

$ cd ~

632

$ tar -xzvf ~/Downloads/eclipse-cpp-luna-SR2-linux-gtk-x86_64.tar.gz

</literallayout>

</para>

</section>

<title>Configuring the Eclipse IDE</title>

639

640

<para>

641

This section presents the steps needed to configure the

Eclipse IDE.

</para>

<para>

Before installing and configuring the Eclipse Yocto Plug-in,

647

you need to configure the Eclipse IDE.

648

Follow these general steps:

649

650

<listitem><para>Start the Eclipse IDE.</para></listitem>

651

<listitem><para>Make sure you are in your Workbench and

652

select "Install New Software" from the "Help"

653

pull-down menu.</para></listitem>

654

<listitem><para>Select

655

<filename>Luna - &ECLIPSE_LUNA_URL;</filename>

656

from the "Work with:" pull-down menu.

657

<note>

658

For Kepler, select

659

<filename>Kepler - &ECLIPSE_KEPLER_URL;</filename>

660

</note>

661

</para></listitem>

662

<listitem><para>Expand the box next to "Linux Tools"

663

and select the

664

<filename>Linux Tools LTTng Tracer Control</filename>,

665

<filename>Linux Tools LTTng Userspace Analysis</filename>,

666

and

667

<filename>LTTng Kernel Analysis</filename> boxes.

668

If these selections do not appear in the list,

669

that means the items are already installed.

670

<note>

671

For Kepler, select

672

<filename>LTTng - Linux Tracing Toolkit</filename>

box.

</note>

</para></listitem>

<listitem><para>Expand the box next to "Mobile and

677

Device Development" and select the following boxes.

678

Again, if any of the following items are not

679

available for selection, that means the items are

680

already installed:

681

682

<listitem><para><filename>C/C++ Remote Launch (Requires RSE Remote System Explorer)</filename></para></listitem>

683

<listitem><para><filename>Remote System Explorer End-user Runtime</filename></para></listitem>

684

<listitem><para><filename>Remote System Explorer User Actions</filename></para></listitem>

685

<listitem><para><filename>Target Management Terminal (Core SDK)</filename></para></listitem>

686

<listitem><para><filename>TCF Remote System Explorer add-in</filename></para></listitem>

687

<listitem><para><filename>TCF Target Explorer</filename></para></listitem>

688

</itemizedlist></para></listitem>

689

<listitem><para>Expand the box next to "Programming

690

Languages" and select the

691

<filename>C/C++ Autotools Support</filename>

692

and <filename>C/C++ Development Tools</filename>

693

boxes.

694

For Luna, these items do not appear on the list

695

as they are already installed.

696

</para></listitem>

697

<listitem><para>Complete the installation and restart

698

the Eclipse IDE.</para></listitem>

</orderedlist>

</para>

</section>

<title>Installing or Accessing the Eclipse Yocto Plug-in</title>

705

706

<para>

707

You can install the Eclipse Yocto Plug-in into the Eclipse

708

IDE one of two ways: use the Yocto Project's Eclipse

709

Update site to install the pre-built plug-in or build and

710

install the plug-in from the latest source code.

</para>

<title>Installing the Pre-built Plug-in from the Yocto Project Eclipse Update Site</title>

715

716

<para>

717

To install the Eclipse Yocto Plug-in from the update

718

site, follow these steps:

719

720

<listitem><para>Start up the Eclipse IDE.

721

</para></listitem>

722

<listitem><para>In Eclipse, select "Install New

723

Software" from the "Help" menu.

724

</para></listitem>

725

<listitem><para>Click "Add..." in the "Work with:"

726

area.</para></listitem>

727

<listitem><para>Enter

728

<filename>&ECLIPSE_DL_PLUGIN_URL;/luna</filename>

729

in the URL field and provide a meaningful name

730

in the "Name" field.

731

<note>

732

If you are using Kepler, use

733

<filename>&ECLIPSE_DL_PLUGIN_URL;/kepler</filename>

734

in the URL field.

735

</note></para></listitem>

736

<listitem><para>Click "OK" to have the entry added

737

to the "Work with:" drop-down list.

738

</para></listitem>

739

<listitem><para>Select the entry for the plug-in

740

from the "Work with:" drop-down list.

741

</para></listitem>

742

<listitem><para>Check the boxes next to

743

<filename>Yocto Project ADT Plug-in</filename>,

744

<filename>Yocto Project Bitbake Commander Plug-in</filename>,

745

and

746

<filename>Yocto Project Documentation plug-in</filename>.

747

</para></listitem>

748

<listitem><para>Complete the remaining software

749

installation steps and then restart the Eclipse

750

IDE to finish the installation of the plug-in.

751

<note>

752

You can click "OK" when prompted about

753

installing software that contains unsigned

content.

</note>

</para></listitem>

</orderedlist>

</para>

</section>

<title>Installing the Plug-in Using the Latest Source Code</title>

763

764

<para>

765

To install the Eclipse Yocto Plug-in from the latest

766

source code, follow these steps:

767

768

<listitem><para>Be sure your development system

769

is not using OpenJDK to build the plug-in

770

by doing the following:

771

772

<listitem><para>Use the Oracle JDK.

773

If you don't have that, go to

774

775

and download the latest appropriate

776

Java SE Development Kit tarball for

777

your development system and

778

extract it into your home directory.

779

</para></listitem>

780

<listitem><para>In the shell you are going

781

to do your work, export the location of

782

the Oracle Java.

783

The previous step creates a new folder

784

for the extracted software.

785

You need to use the following

786

<filename>export</filename> command

787

and provide the specific location:

788

789

export PATH=~/<replaceable>extracted_jdk_location</replaceable>/bin:$PATH

</literallayout>

</para></listitem>

</orderedlist>

</para></listitem>

<listitem><para>In the same shell, create a Git

repository with:

$ cd ~

$ git clone git://git.yoctoproject.org/eclipse-poky

799

</literallayout>

800

</para></listitem>

801

<listitem><para>Be sure to checkout the correct

802

tag.

803

For example, if you are using Luna, do the

804

following:

805

806

$ git checkout luna/yocto-&DISTRO;

807

</literallayout>

808

This puts you in a detached HEAD state, which

809

is fine since you are only going to be building

810

and not developing.

811

<note>

812

If you are building kepler, checkout the

813

<filename>kepler/yocto-&DISTRO;</filename>

branch.

</note>

</para></listitem>

<listitem><para>Change to the

818

<filename>scripts</filename>

819

directory within the Git repository:

$ cd scripts

</literallayout>

</para></listitem>

<listitem><para>Set up the local build environment

825

by running the setup script:

$ ./setup.sh

</literallayout>

</para></listitem>

<listitem><para>When the script finishes execution,

831

it prompts you with instructions on how to run

832

the <filename>build.sh</filename> script, which

833

is also in the <filename>scripts</filename>

834

directory of the Git repository created

835

earlier.

836

</para></listitem>

837

<listitem><para>Run the <filename>build.sh</filename>

838

script as directed.

839

Be sure to provide the tag name, documentation

840

branch, and a release name.

841

Here is an example that uses the

842

<filename>luna/yocto-&DISTRO;</filename> tag, the

843

<filename>master</filename> documentation

844

branch, and

845

<filename>&DISTRO_NAME_NO_CAP;</filename> for the

846

release name:

847

848

$ ECLIPSE_HOME=/home/scottrif/eclipse-poky/scripts/eclipse ./build.sh luna/yocto-&DISTRO; master &DISTRO_NAME_NO_CAP; 2>&1 | tee -a build.log

849

</literallayout>

850

After running the script, the file

851

<filename>org.yocto.sdk-</filename><replaceable>release</replaceable><filename>-</filename><replaceable>date</replaceable><filename>-archive.zip</filename>

852

is in the current directory.

853

</para></listitem>

854

<listitem><para>If necessary, start the Eclipse IDE

855

and be sure you are in the Workbench.

856

</para></listitem>

857

<listitem><para>Select "Install New Software" from

858

the "Help" pull-down menu.

859

</para></listitem>

860

<listitem><para>Click "Add".</para></listitem>

861

<listitem><para>Provide anything you want in the

862

"Name" field.

863

</para></listitem>

864

<listitem><para>Click "Archive" and browse to the

865

ZIP file you built in step eight.

866

This ZIP file should not be "unzipped", and must

867

be the <filename>*archive.zip</filename> file

868

created by running the

869

<filename>build.sh</filename> script.

870

</para></listitem>

871

<listitem><para>Click the "OK" button.

872

</para></listitem>

873

<listitem><para>Check the boxes that appear in

874

the installation window to install the

875

<filename>Yocto Project ADT Plug-in</filename>,

876

<filename>Yocto Project Bitbake Commander Plug-in</filename>,

877

and the

878

<filename>Yocto Project Documentation plug-in</filename>.

879

</para></listitem>

880

<listitem><para>Finish the installation by clicking

881

through the appropriate buttons.

882

You can click "OK" when prompted about

883

installing software that contains unsigned

884

content.

885

</para></listitem>

886

<listitem><para>Restart the Eclipse IDE if

necessary.

</para></listitem>

</orderedlist>

</para>

<para>

At this point you should be able to configure the

894

Eclipse Yocto Plug-in as described in the

895

"<link linkend='configuring-the-eclipse-yocto-plug-in'>Configuring the Eclipse Yocto Plug-in</link>"

section.</para>

</section>

</section>

<title>Configuring the Eclipse Yocto Plug-in</title>

902

903

<para>

904

Configuring the Eclipse Yocto Plug-in involves setting the

905

Cross Compiler options and the Target options.

906

The configurations you choose become the default settings

907

for all projects.

908

You do have opportunities to change them later when

909

you configure the project (see the following section).

</para>

<para>

To start, you need to do the following from within the

914

Eclipse IDE:

915

916

<listitem><para>Choose "Preferences" from the

917

"Window" menu to display the Preferences Dialog.

918

</para></listitem>

919

<listitem><para>Click "Yocto Project ADT" to display

920

the configuration screen.

</para></listitem>

</itemizedlist>

</para>

<title>Configuring the Cross-Compiler Options</title>

927

928

<para>

929

To configure the Cross Compiler Options, you must select

930

the type of toolchain, point to the toolchain, specify

931

the sysroot location, and select the target

932

architecture.

933

934

<listitem><para><emphasis>Selecting the Toolchain Type:</emphasis>

935

Choose between

936

<filename>Standalone pre-built toolchain</filename>

937

and

938

<filename>Build system derived toolchain</filename>

939

for Cross Compiler Options.

940

941

942

<filename>Standalone Pre-built Toolchain:</filename></emphasis>

943

Select this mode when you are using

944

a stand-alone cross-toolchain.

945

For example, suppose you are an

946

application developer and do not

947

need to build a target image.

948

Instead, you just want to use an

949

architecture-specific toolchain on

950

an existing kernel and target root

951

filesystem.</para></listitem>

952

953

<filename>Build System Derived Toolchain:</filename></emphasis>

954

Select this mode if the

955

cross-toolchain has been installed

956

and built as part of the

957

<ulink url='&YOCTO_DOCS_DEV_URL;#build-directory'>Build Directory</ulink>.

958

When you select

959

<filename>Build system derived toolchain</filename>,

960

you are using the toolchain bundled

961

inside the Build Directory.

</para></listitem>

</itemizedlist>

</para></listitem>

<listitem><para><emphasis>Point to the Toolchain:</emphasis>

966

If you are using a stand-alone pre-built

967

toolchain, you should be pointing to where it is

968

installed.

969

See the

970

"<link linkend='sdk-installing-the-sdk'>Installing the SDK</link>"

971

section for information about how the SDK is

972

installed.</para>

973

<para>If you are using a system-derived

974

toolchain, the path you provide for the

975

<filename>Toolchain Root Location</filename>

976

field is the

977

<ulink url='&YOCTO_DOCS_DEV_URL;#build-directory'>Build Directory</ulink>.

978

See the

979

"<link linkend='sdk-building-an-sdk-installer'>Building an SDK Installer</link>"

980

section.</para></listitem>

981

<listitem><para><emphasis>Specify the Sysroot Location:</emphasis>

982

This location is where the root filesystem for

983

the target hardware resides.

984

</para>

985

<para>The location of

986

the sysroot filesystem depends on where you

987

separately extracted and installed the

988

filesystem.</para>

989

<para>For information on how to install the

990

toolchain and on how to extract and install the

991

sysroot filesystem, see the

992

"<link linkend='sdk-building-an-sdk-installer'>Building an SDK Installer</link>"

993

section.

994

</para></listitem>

995

<listitem><para><emphasis>Select the Target Architecture:</emphasis>

996

The target architecture is the type of hardware

997

you are going to use or emulate.

998

Use the pull-down

999

<filename>Target Architecture</filename> menu

1000

to make your selection.

1001

The pull-down menu should have the supported

1002

architectures.

1003

If the architecture you need is not listed in

1004

the menu, you will need to build the image.

1005

See the

1006

"<ulink url='&YOCTO_DOCS_QS_URL;#qs-building-images'>Building Images</ulink>"

1007

section of the Yocto Project Quick Start for

1008

more information.</para></listitem>

</itemizedlist>

</para>

</section>

<title>Configuring the Target Options</title>

1015

1016

<para>

1017

You can choose to emulate hardware using the QEMU

1018

emulator, or you can choose to run your image on actual

hardware.

Select this option if you will be using the

1023

QEMU emulator.

1024

If you are using the emulator, you also need to

1025

locate the kernel and specify any custom

1026

options.</para>

1027

<para>If you selected

1028

<filename>Build system derived toolchain</filename>,

1029

the target kernel you built will be located in

1030

the Build Directory in

1031

<filename>tmp/deploy/images/<replaceable>machine</replaceable></filename>

1032

directory.

1033

If you selected

1034

<filename>Standalone pre-built toolchain</filename>,

1035

the pre-built image you downloaded is located

1036

in the directory you specified when you

1037

downloaded the image.</para>

1038

<para>Most custom options are for advanced QEMU

1039

users to further customize their QEMU instance.

1040

These options are specified between paired

1041

angled brackets.

1042

Some options must be specified outside the

1043

brackets.

1044

In particular, the options

1045

<filename>serial</filename>,

1046

<filename>nographic</filename>, and

1047

<filename>kvm</filename> must all be outside the

1048

brackets.

1049

Use the <filename>man qemu</filename> command

1050

to get help on all the options and their use.

1051

The following is an example:

1052

1053

serial ‘<-m 256 -full-screen>’

1054

</literallayout></para>

1055

<para>

1056

Regardless of the mode, Sysroot is already

1057

defined as part of the Cross-Compiler Options

1058

configuration in the

1059

<filename>Sysroot Location:</filename> field.

1060

</para></listitem>

1061

<listitem><para><emphasis>External HW:</emphasis>

1062

Select this option if you will be using actual

1063

hardware.</para></listitem>

</itemizedlist>

</para>

<para>

Click the "OK" to save your plug-in configurations.

</para>

</section>

</section>

</section>

<title>Creating the Project</title>

1076

1077

<para>

1078

You can create two types of projects: Autotools-based, or

1079

Makefile-based.

1080

This section describes how to create Autotools-based projects

1081

from within the Eclipse IDE.

1082

For information on creating Makefile-based projects in a

1083

terminal window, see the

1084

"<link linkend='makefile-based-projects'>Makefile-Based Projects</link>"

1085

section.

1086

<note>

1087

Do not use special characters in project names

1088

(e.g. spaces, underscores, etc.). Doing so can

1089

cause configuration to fail.

</note>

</para>

<para>

To create a project based on a Yocto template and then display

1095

the source code, follow these steps:

1096

1097

<listitem><para>Select "Project" from the "File -> New" menu.

1098

</para></listitem>

1099

<listitem><para>Double click <filename>CC++</filename>.

1100

</para></listitem>

1101

<listitem><para>Double click <filename>C Project</filename>

1102

to create the project.</para></listitem>

1103

<listitem><para>Expand <filename>Yocto Project ADT Autotools Project</filename>.

1104

</para></listitem>

1105

<listitem><para>Select <filename>Hello World ANSI C Autotools Project</filename>.

1106

This is an Autotools-based project based on a Yocto

1107

template.</para></listitem>

1108

<listitem><para>Put a name in the <filename>Project name:</filename>

1109

field.

1110

Do not use hyphens as part of the name.

1111

</para></listitem>

1112

<listitem><para>Click "Next".</para></listitem>

1113

<listitem><para>Add information in the

1114

<filename>Author</filename> and

1115

<filename>Copyright notice</filename> fields.

1116

</para></listitem>

1117

<listitem><para>Be sure the <filename>License</filename>

1118

field is correct.</para></listitem>

1119

<listitem><para>Click "Finish".</para></listitem>

1120

<listitem><para>If the "open perspective" prompt appears,

1121

click "Yes" so that you in the C/C++ perspective.

1122

</para></listitem>

1123

<listitem><para>The left-hand navigation pane shows your

1124

project.

1125

You can display your source by double clicking the

1126

project's source file.</para></listitem>

</orderedlist>

</para>

</section>

<title>Configuring the Cross-Toolchains</title>

<para>

The earlier section,

"<link linkend='configuring-the-eclipse-yocto-plug-in'>Configuring the Eclipse Yocto Plug-in</link>",

1137

sets up the default project configurations.

1138

You can override these settings for a given project by following

1139

these steps:

1140

1141

<listitem><para>Select "Change Yocto Project Settings" from

1142

the "Project" menu.

1143

This selection brings up the Yocto Project Settings

1144

Dialog and allows you to make changes specific to an

1145

individual project.</para>

1146

<para>By default, the Cross Compiler Options and Target

1147

Options for a project are inherited from settings you

1148

provided using the Preferences Dialog as described

1149

earlier in the

1150

"<link linkend='configuring-the-eclipse-yocto-plug-in'>Configuring the Eclipse Yocto Plug-in</link>" section.

1151

The Yocto Project Settings Dialog allows you to override

1152

those default settings for a given project.

1153

</para></listitem>

1154

<listitem><para>Make your configurations for the project

1155

and click "OK".

1156

</para></listitem>

1157

<listitem><para>Right-click in the navigation pane and

1158

select "Reconfigure Project" from the pop-up menu.

1159

This selection reconfigures the project by running

1160

<filename>autogen.sh</filename> in the workspace for

1161

your project.

1162

The script also runs <filename>libtoolize</filename>,

1163

<filename>aclocal</filename>,

1164

<filename>autoconf</filename>,

1165

<filename>autoheader</filename>,

1166

<filename>automake --a</filename>, and

1167

<filename>./configure</filename>.

1168

Click on the "Console" tab beneath your source code to

1169

see the results of reconfiguring your project.

</para></listitem>

</orderedlist>

</para>

</section>

<title>Building the Project</title>

1177

1178

<para>

1179

To build the project select "Build Project" from the

1180

"Project" menu.

1181

The console should update and you can note the cross-compiler

1182

you are using.

1183

<note>

1184

When building "Yocto Project ADT Autotools" projects, the Eclipse

1185

IDE might display error messages for Functions/Symbols/Types

1186

that cannot be "resolved", even when the related include file

1187

is listed at the project navigator and when the project is

1188

able to build.

1189

For these cases only, it is recommended to add a new linked

1190

folder to the appropriate sysroot.

1191

Use these steps to add the linked folder:

Select the project.

</para></listitem>

Select "Folder" from the

1198

<filename>File > New</filename> menu.

1199

</para></listitem>

1200

1201

In the "New Folder" Dialog, select "Link to alternate

1202

location (linked folder)".

1203

</para></listitem>

1204

1205

Click "Browse" to navigate to the include folder inside

1206

the same sysroot location selected in the Yocto Project

1207

configuration preferences.

</para></listitem>

Click "OK".

</para></listitem>

Click "Finish" to save the linked folder.

</para></listitem>

</orderedlist>

</note>

</para>

</section>

<title>Starting QEMU in User-Space NFS Mode</title>

1222

1223

<para>

1224

To start the QEMU emulator from within Eclipse, follow these

steps:

<note>

See the

"<ulink url='&YOCTO_DOCS_DEV_URL;#dev-manual-qemu'>Using the Quick EMUlator (QEMU)</ulink>"

1229

chapter in the Yocto Project Development Manual

1230

for more information on using QEMU.

1231

</note>

1232

1233

<listitem><para>Expose and select "External Tools" from

1234

the "Run" menu.

1235

Your image should appear as a selectable menu item.

1236

</para></listitem>

1237

<listitem><para>Select your image from the menu to launch

1238

the emulator in a new window.

1239

</para></listitem>

1240

<listitem><para>If needed, enter your host root password in

1241

the shell window at the prompt.

1242

This sets up a <filename>Tap 0</filename> connection

1243

needed for running in user-space NFS mode.

1244

</para></listitem>

1245

<listitem><para>Wait for QEMU to launch.</para></listitem>

1246

<listitem><para>Once QEMU launches, you can begin operating

1247

within that environment.

1248

One useful task at this point would be to determine the

1249

IP Address for the user-space NFS by using the

1250

<filename>ifconfig</filename> command.

</para></listitem>

</orderedlist>

</para>

</section>

<title>Deploying and Debugging the Application</title>

1258

1259

<para>

1260

Once the QEMU emulator is running the image, you can deploy

1261

your application using the Eclipse IDE and then use

1262

the emulator to perform debugging.

1263

Follow these steps to deploy the application.

1264

<note>

1265

Currently, Eclipse does not support SSH port forwarding.

1266

Consequently, if you need to run or debug a remote

1267

application using the host display, you must create a

1268

tunneling connection from outside Eclipse and keep

1269

that connection alive during your work.

1270

For example, in a new terminal, run the following:

1271

1272

ssh -XY user_name@remote_host_ip

1273

</literallayout>

1274

After running the command, add the command to be executed

1275

in Eclipse's run configuration before the application

as follows:

export DISPLAY=:10.0

</literallayout>

</note>

<listitem><para>Select "Debug Configurations..." from the

1283

"Run" menu.</para></listitem>

1284

<listitem><para>In the left area, expand

1285

<filename>C/C++Remote Application</filename>.

1286

</para></listitem>

1287

<listitem><para>Locate your project and select it to bring

1288

up a new tabbed view in the Debug Configurations Dialog.

1289

</para></listitem>

1290

<listitem><para>Enter the absolute path into which you want

1291

to deploy the application.

1292

Use the "Remote Absolute File Path for

1293

C/C++Application:" field.

1294

For example, enter

1295

<filename>/usr/bin/<replaceable>programname</replaceable></filename>.

1296

</para></listitem>

1297

<listitem><para>Click on the "Debugger" tab to see the

1298

cross-tool debugger you are using.</para></listitem>

1299

<listitem><para>Click on the "Main" tab.</para></listitem>

1300

<listitem><para>Create a new connection to the QEMU instance

1301

by clicking on "new".</para></listitem>

1302

<listitem><para>Select <filename>TCF</filename>, which means

1303

Target Communication Framework.</para></listitem>

1304

<listitem><para>Click "Next".</para></listitem>

1305

<listitem><para>Clear out the "host name" field and enter

1306

the IP Address determined earlier.</para></listitem>

1307

<listitem><para>Click "Finish" to close the

1308

New Connections Dialog.</para></listitem>

1309

<listitem><para>Use the drop-down menu now in the

1310

"Connection" field and pick the IP Address you entered.

1311

</para></listitem>

1312

<listitem><para>Click "Debug" to bring up a login screen

1313

and login.</para></listitem>

1314

<listitem><para>Accept the debug perspective.

</para></listitem>

</orderedlist>

</para>

</section>

<title>Running User-Space Tools</title>

1322

1323

<para>

1324

As mentioned earlier in the manual, several tools exist that

1325

enhance your development experience.

1326

These tools are aids in developing and debugging applications

1327

and images.

1328

You can run these user-space tools from within the Eclipse

1329

IDE through the "YoctoProjectTools" menu.

</para>

<para>

Once you pick a tool, you need to configure it for the remote

1334

target.

1335

Every tool needs to have the connection configured.

1336

You must select an existing TCF-based RSE connection to the

1337

remote target.

1338

If one does not exist, click "New" to create one.

</para>

<para>

Here are some specifics about the remote tools:

1343

1344

<listitem><para><emphasis><filename>Lttng2.0 trace import</filename>:</emphasis>

1345

Selecting this tool transfers the remote target's

1346

<filename>Lttng</filename> tracing data back to the

1347

local host machine and uses the Lttng Eclipse plug-in

1348

to graphically display the output.

1349

For information on how to use Lttng to trace an

1350

application,

1351

see <ulink url='http://lttng.org/documentation'></ulink>

1352

and the

1353

"<ulink url='&YOCTO_DOCS_PROF_URL;#lttng-linux-trace-toolkit-next-generation'>LTTng (Linux Trace Toolkit, next generation)</ulink>"

1354

section, which is in the Yocto Project Profiling and

1355

Tracing Manual.

1356

<note>Do not use

1357

<filename>Lttng-user space (legacy)</filename> tool.

1358

This tool no longer has any upstream support.</note>

1359

</para>

1360

<para>Before you use the

1361

<filename>Lttng2.0 trace import</filename> tool,

1362

you need to setup the Lttng Eclipse plug-in and create a

Tracing project.

Do the following:

<listitem><para>Select "Open Perspective" from the

1367

"Window" menu and then select "Other..." to

1368

bring up a menu of other perspectives.

1369

Choose "Tracing".

1370

</para></listitem>

1371

<listitem><para>Click "OK" to change the Eclipse

1372

perspective into the Tracing perspective.

1373

</para></listitem>

1374

<listitem><para>Create a new Tracing project by

1375

selecting "Project" from the "File -> New" menu.

1376

</para></listitem>

1377

<listitem><para>Choose "Tracing Project" from the

1378

"Tracing" menu and click "Next".

1379

</para></listitem>

1380

<listitem><para>Provide a name for your tracing

1381

project and click "Finish".

1382

</para></listitem>

1383

<listitem><para>Generate your tracing data on the

1384

remote target.</para></listitem>

1385

<listitem><para>Select "Lttng2.0 trace import"

1386

from the "Yocto Project Tools" menu to

1387

start the data import process.</para></listitem>

1388

<listitem><para>Specify your remote connection name.

1389

</para></listitem>

1390

<listitem><para>For the Ust directory path, specify

1391

the location of your remote tracing data.

1392

Make sure the location ends with

1393

<filename>ust</filename> (e.g.

1394

<filename>/usr/mysession/ust</filename>).

1395

</para></listitem>

1396

<listitem><para>Click "OK" to complete the import

1397

process.

1398

The data is now in the local tracing project

1399

you created.</para></listitem>

1400

<listitem><para>Right click on the data and then use

1401

the menu to Select "Generic CTF Trace" from the

1402

"Trace Type... -> Common Trace Format" menu to

1403

map the tracing type.</para></listitem>

1404

<listitem><para>Right click the mouse and select

1405

"Open" to bring up the Eclipse Lttng Trace

1406

Viewer so you view the tracing data.

1407

</para></listitem>

1408

</orderedlist></para></listitem>

1409

<listitem><para><emphasis><filename>PowerTOP</filename>:</emphasis>

1410

Selecting this tool runs PowerTOP on the remote target

1411

machine and displays the results in a new view called

1412

PowerTOP.</para>

1413

<para>The "Time to gather data(sec):" field is the time

1414

passed in seconds before data is gathered from the

1415

remote target for analysis.</para>

1416

<para>The "show pids in wakeups list:" field corresponds

1417

to the <filename>-p</filename> argument passed to

1418

<filename>PowerTOP</filename>.</para></listitem>

1419

<listitem><para><emphasis><filename>LatencyTOP and Perf</filename>:</emphasis>

1420

LatencyTOP identifies system latency, while

1421

Perf monitors the system's performance counter

1422

registers.

1423

Selecting either of these tools causes an RSE terminal

1424

view to appear from which you can run the tools.

1425

Both tools refresh the entire screen to display results

1426

while they run.

1427

For more information on setting up and using

1428

<filename>perf</filename>, see the

1429

"<ulink url='&YOCTO_DOCS_PROF_URL;#profile-manual-perf'>perf</ulink>"

1430

section in the Yocto Project Profiling and Tracing

1431

Manual.

1432

</para></listitem>

1433

<listitem><para><emphasis><filename>SystemTap</filename>:</emphasis>

1434

Systemtap is a tool that lets you create and reuse

1435

scripts to examine the activities of a live Linux

1436

system.

1437

You can easily extract, filter, and summarize data

1438

that helps you diagnose complex performance or

1439

functional problems.

1440

For more information on setting up and using

1441

<filename>SystemTap</filename>, see the

1442

<ulink url='https://sourceware.org/systemtap/documentation.html'>SystemTap Documentation</ulink>.

1443

</para></listitem>

1444

<listitem><para><emphasis><filename>yocto-bsp</filename>:</emphasis>

1445

The <filename>yocto-bsp</filename> tool lets you

1446

quickly set up a Board Support Package (BSP) layer.

1447

The tool requires a Metadata location, build location,

1448

BSP name, BSP output location, and a kernel

1449

architecture.

1450

For more information on the

1451

<filename>yocto-bsp</filename> tool outside of Eclipse,

1452

see the

1453

"<ulink url='&YOCTO_DOCS_BSP_URL;#creating-a-new-bsp-layer-using-the-yocto-bsp-script'>Creating a new BSP Layer Using the yocto-bsp Script</ulink>"

1454

section in the Yocto Project Board Support Package

1455

(BSP) Developer's Guide.

</para></listitem>

</itemizedlist>

</para>

</section>

</section>

</section>

</chapter>

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