1461 lines
80 KiB
XML
1461 lines
80 KiB
XML
<!DOCTYPE chapter PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
|
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"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"
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[<!ENTITY % poky SYSTEM "../poky.ent"> %poky; ] >
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|
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<chapter id='sdk-working-projects'>
|
||
|
||
<title>Using the SDK Toolchain Directly</title>
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||
|
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<para>
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You can use the SDK toolchain directly with Makefile,
|
||
Autotools, and <trademark class='trade'>Eclipse</trademark> based
|
||
projects.
|
||
This chapter covers information specific to each of these types of
|
||
projects.
|
||
</para>
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||
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||
<section id='autotools-based-projects'>
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||
<title>Autotools-Based Projects</title>
|
||
|
||
<para>
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||
Once you have a suitable cross-toolchain installed, it is very easy
|
||
to develop a project outside of the OpenEmbedded build system.
|
||
This section presents a simple "Helloworld" example that shows how
|
||
to set up, compile, and run the project.
|
||
</para>
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||
|
||
<section id='creating-and-running-a-project-based-on-gnu-autotools'>
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||
<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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<orderedlist>
|
||
<listitem><para>
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||
<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:
|
||
<literallayout class='monospaced'>
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||
$ mkdir $HOME/helloworld
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$ cd $HOME/helloworld
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||
</literallayout>
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||
</para></listitem>
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||
<listitem><para>
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||
<emphasis>Populate the directory:</emphasis>
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||
Create <filename>hello.c</filename>,
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||
<filename>Makefile.am</filename>,
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||
and <filename>configure.ac</filename> files as follows:
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||
<itemizedlist>
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||
<listitem><para>
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||
For <filename>hello.c</filename>, include
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||
these lines:
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||
<literallayout class='monospaced'>
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||
#include <stdio.h>
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||
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||
main()
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||
{
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||
printf("Hello World!\n");
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||
}
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||
</literallayout>
|
||
</para></listitem>
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||
<listitem><para>
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||
For <filename>Makefile.am</filename>,
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||
include these lines:
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||
<literallayout class='monospaced'>
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||
bin_PROGRAMS = hello
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hello_SOURCES = hello.c
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||
</literallayout>
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||
</para></listitem>
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||
<listitem><para>
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||
For <filename>configure.in</filename>,
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||
include these lines:
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||
<literallayout class='monospaced'>
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||
AC_INIT(hello,0.1)
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||
AM_INIT_AUTOMAKE([foreign])
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||
AC_PROG_CC
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||
AC_PROG_INSTALL
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||
AC_OUTPUT(Makefile)
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||
</literallayout>
|
||
</para></listitem>
|
||
</itemizedlist>
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||
</para></listitem>
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||
<listitem><para>
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||
<emphasis>Source the cross-toolchain
|
||
environment setup file:</emphasis>
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||
As described earlier in the manual, installing the
|
||
cross-toolchain creates a cross-toolchain
|
||
environment setup script in the directory that the SDK
|
||
was installed.
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||
Before you can use the tools to develop your project,
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||
you must source this setup script.
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The script begins with the string "environment-setup"
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||
and contains the machine architecture, which is
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||
followed by the string "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
|
||
32-bit Intel x86 Architecture and the
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||
&DISTRO_NAME; Yocto Project release:
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<literallayout class='monospaced'>
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$ source /opt/poky/&DISTRO;/environment-setup-i586-poky-linux
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</literallayout>
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||
</para></listitem>
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||
<listitem><para>
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||
<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
|
||
<filename>aclocal.m4</filename> files and create the
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||
configure script:
|
||
<literallayout class='monospaced'>
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||
$ aclocal
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||
$ autoconf
|
||
</literallayout>
|
||
</para></listitem>
|
||
<listitem><para>
|
||
<emphasis>Generate files needed by GNU coding
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||
standards:</emphasis>
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||
GNU coding standards require certain files in order
|
||
for the project to be compliant.
|
||
This command creates those files:
|
||
<literallayout class='monospaced'>
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||
$ touch NEWS README AUTHORS ChangeLog
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</literallayout>
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||
</para></listitem>
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||
<listitem><para>
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||
<emphasis>Generate the configure file:</emphasis>
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||
This command generates the
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||
<filename>configure</filename>:
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||
<literallayout class='monospaced'>
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$ automake -a
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||
</literallayout>
|
||
</para></listitem>
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||
<listitem><para>
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<emphasis>Cross-compile the project:</emphasis>
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This command compiles the project using the
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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:
|
||
<literallayout class='monospaced'>
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$ ./configure ${CONFIGURE_FLAGS}
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</literallayout>
|
||
</para></listitem>
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<listitem><para>
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||
<emphasis>Make and install the project:</emphasis>
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These two commands generate and install the project
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into the destination directory:
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<literallayout class='monospaced'>
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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>
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<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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<literallayout class='monospaced'>
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$ file ./tmp/usr/local/bin/hello
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</literallayout>
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||
</para></listitem>
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<listitem><para>
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<emphasis>Execute your project:</emphasis>
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To execute the project in the shell, simply enter
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the name.
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You could also copy the binary to the actual target
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hardware and run the project there as well:
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<literallayout class='monospaced'>
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$ ./hello
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</literallayout>
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As expected, the project displays the "Hello World!"
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message.
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</para></listitem>
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</orderedlist>
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</para>
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</section>
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<section id='passing-host-options'>
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<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
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by just passing the appropriate host option to
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<filename>configure.sh</filename>.
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The host option you use is derived from the name of the
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environment setup script found in the directory in which you
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installed the cross-toolchain.
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For example, the host option for an ARM-based target that uses
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the GNU EABI 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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<literallayout class='monospaced'>
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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
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problems recognizing the
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<filename>--with-libtool-sysroot=</filename><replaceable>sysroot-dir</replaceable>
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||
option, regenerate the script to enable the support by
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doing the following and then run the script again:
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<literallayout class='monospaced'>
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$ libtoolize --automake
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$ aclocal -I ${OECORE_TARGET_SYSROOT}/usr/share/aclocal [-I <replaceable>dir_containing_your_project-specific_m4_macros</replaceable>]
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||
$ autoconf
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||
$ autoheader
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||
$ automake -a
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</literallayout>
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</note>
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</para>
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||
</section>
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||
</section>
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<section id='makefile-based-projects'>
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||
<title>Makefile-Based Projects</title>
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<para>
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For Makefile-based projects, the cross-toolchain environment
|
||
variables established by running the cross-toolchain environment
|
||
setup script are subject to general <filename>make</filename>
|
||
rules.
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||
</para>
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||
|
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<para>
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||
To illustrate this, consider the following four cross-toolchain
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||
environment variables:
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||
<literallayout class='monospaced'>
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||
<ulink url='&YOCTO_DOCS_REF_URL;#var-CC'>CC</ulink>=i586-poky-linux-gcc -m32 -march=i586 --sysroot=/opt/poky/&DISTRO;/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/&DISTRO;/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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||
<itemizedlist>
|
||
<listitem><para>
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||
<emphasis>Case 1 - No Variables Set in the
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||
<filename>Makefile</filename>:</emphasis>
|
||
Because these variables are not specifically set in the
|
||
<filename>Makefile</filename>, the variables retain their
|
||
values based on the environment.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
<emphasis>Case 2 - Variables Set in the
|
||
<filename>Makefile</filename>:</emphasis>
|
||
Specifically setting variables in the
|
||
<filename>Makefile</filename> during the build results in
|
||
the environment settings of the variables being
|
||
overwritten.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
<emphasis>Case 3 - Variables Set when the
|
||
<filename>Makefile</filename> is Executed from the
|
||
Command Line:</emphasis>
|
||
Executing the <filename>Makefile</filename> from the
|
||
command-line results in the variables being overwritten
|
||
with command-line content regardless of what is being set
|
||
in the <filename>Makefile</filename>.
|
||
In this case, environment variables are not considered
|
||
unless you use the "-e" flag during the build:
|
||
<literallayout class='monospaced'>
|
||
$ make -e <replaceable>file</replaceable>
|
||
</literallayout>
|
||
If you use this flag, then the environment values of the
|
||
variables override any variables specifically set in the
|
||
<filename>Makefile</filename>.
|
||
</para></listitem>
|
||
</itemizedlist>
|
||
<note>
|
||
For the list of variables set up by the cross-toolchain
|
||
environment setup script, see the
|
||
"<link linkend='sdk-running-the-sdk-environment-setup-script'>Running the SDK Environment Setup Script</link>"
|
||
section.
|
||
</note>
|
||
</para>
|
||
</section>
|
||
|
||
<section id='sdk-developing-applications-using-eclipse'>
|
||
<title>Developing Applications Using <trademark class='trade'>Eclipse</trademark></title>
|
||
|
||
<para>
|
||
If you are familiar with the popular Eclipse IDE, you can use an
|
||
Eclipse Yocto Plug-in to allow you to develop, deploy, and test your
|
||
application all from within Eclipse.
|
||
This section describes general workflow using the SDK and Eclipse
|
||
and how to configure and set up Eclipse.
|
||
</para>
|
||
|
||
<section id='workflow-using-eclipse'>
|
||
<title>Workflow Using <trademark class='trade'>Eclipse</trademark></title>
|
||
|
||
<para>
|
||
The following figure and supporting list summarize the
|
||
application development general workflow that employs both the
|
||
SDK Eclipse.
|
||
</para>
|
||
|
||
<para>
|
||
<imagedata fileref="figures/sdk-eclipse-dev-flow.png"
|
||
width="7in" depth="7in" align="center" scale="100" />
|
||
</para>
|
||
|
||
<para>
|
||
<orderedlist>
|
||
<listitem><para>
|
||
<emphasis>Prepare the host system for the Yocto
|
||
Project</emphasis>:
|
||
See
|
||
"<ulink url='&YOCTO_DOCS_REF_URL;#detailed-supported-distros'>Supported Linux Distributions</ulink>"
|
||
and
|
||
"<ulink url='&YOCTO_DOCS_REF_URL;#required-packages-for-the-host-development-system'>Required Packages for the Host Development System</ulink>"
|
||
sections both in the Yocto Project Reference Manual for
|
||
requirements.
|
||
In particular, be sure your host system has the
|
||
<filename>xterm</filename> package installed.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
<emphasis>Secure the Yocto Project kernel target
|
||
image</emphasis>:
|
||
You must have a target kernel image that has been built
|
||
using the OpenEmbedded build system.</para>
|
||
<para>Depending on whether the Yocto Project has a
|
||
pre-built image that matches your target architecture
|
||
and where you are going to run the image while you
|
||
develop your application (QEMU or real hardware), the
|
||
area from which you get the image differs.
|
||
<itemizedlist>
|
||
<listitem><para>
|
||
Download the image from
|
||
<ulink url='&YOCTO_MACHINES_DL_URL;'><filename>machines</filename></ulink>
|
||
if your target architecture is supported and
|
||
you are going to develop and test your
|
||
application on actual hardware.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Download the image from
|
||
<ulink url='&YOCTO_QEMU_DL_URL;'>
|
||
<filename>machines/qemu</filename></ulink> if
|
||
your target architecture is supported and you
|
||
are going to develop and test your application
|
||
using the QEMU emulator.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Build your image if you cannot find a pre-built
|
||
image that matches your target architecture.
|
||
If your target architecture is similar to a
|
||
supported architecture, you can modify the
|
||
kernel image before you build it.
|
||
See the
|
||
"<ulink url='&YOCTO_DOCS_DEV_URL;#patching-the-kernel'>Patching the Kernel</ulink>"
|
||
section in the Yocto Project Development
|
||
manual for an example.
|
||
</para></listitem>
|
||
</itemizedlist>
|
||
</para></listitem>
|
||
<listitem>
|
||
<para><emphasis>Install the SDK</emphasis>:
|
||
The SDK provides a target-specific cross-development
|
||
toolchain, the root filesystem, the QEMU emulator, and
|
||
other tools that can help you develop your application.
|
||
For information on how to install the SDK, see the
|
||
"<link linkend='sdk-installing-the-sdk'>Installing the SDK</link>"
|
||
section.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
<emphasis>Secure the target root filesystem
|
||
and the Cross-development toolchain</emphasis>:
|
||
You need to find and download the appropriate root
|
||
filesystem and the cross-development toolchain.</para>
|
||
<para>You can find the tarballs for the root filesystem
|
||
in the same area used for the kernel image.
|
||
Depending on the type of image you are running, the
|
||
root filesystem you need differs.
|
||
For example, if you are developing an application that
|
||
runs on an image that supports Sato, you need to get a
|
||
root filesystem that supports Sato.</para>
|
||
<para>You can find the cross-development toolchains at
|
||
<ulink url='&YOCTO_TOOLCHAIN_DL_URL;'><filename>toolchains</filename></ulink>.
|
||
Be sure to get the correct toolchain for your
|
||
development host and your target architecture.
|
||
See the "<link linkend='sdk-locating-pre-built-sdk-installers'>Locating Pre-Built SDK Installers</link>"
|
||
section for information and the
|
||
"<link linkend='sdk-installing-the-sdk'>Installing the SDK</link>"
|
||
section for installation information.
|
||
<note>
|
||
As an alternative to downloading an SDK, you can
|
||
build the SDK installer.
|
||
For information on building the installer, see the
|
||
"<link linkend='sdk-building-an-sdk-installer'>Building an SDK Installer</link>"
|
||
section.
|
||
Another helpful resource for building an installer
|
||
is the
|
||
<ulink url='https://wiki.yoctoproject.org/wiki/TipsAndTricks/RunningEclipseAgainstBuiltImage'>Cookbook guide to Making an Eclipse Debug Capable Image</ulink>
|
||
wiki page.
|
||
</note>
|
||
</para></listitem>
|
||
<listitem><para>
|
||
<emphasis>Create and build your application</emphasis>:
|
||
At this point, you need to have source files for your
|
||
application.
|
||
Once you have the files, you can use the Eclipse IDE
|
||
to import them and build the project.
|
||
If you are not using Eclipse, you need to use the
|
||
cross-development tools you have installed to create
|
||
the image.</para></listitem>
|
||
<listitem><para>
|
||
<emphasis>Deploy the image with the
|
||
application</emphasis>:
|
||
Using the Eclipse IDE, you can deploy your image to the
|
||
hardware or to QEMU through the project's preferences.
|
||
You can also use Eclipse to load and test your image
|
||
under QEMU.
|
||
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.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
<emphasis>Test and debug the application</emphasis>:
|
||
Once your application is deployed, you need to test it.
|
||
Within the Eclipse IDE, you can use the debugging
|
||
environment along with supported performance enhancing
|
||
<ulink url='http://www.eclipse.org/linuxtools/'>Linux Tools</ulink>.
|
||
</para></listitem>
|
||
</orderedlist>
|
||
</para>
|
||
</section>
|
||
|
||
<section id='adt-eclipse'>
|
||
<title>Working Within Eclipse</title>
|
||
|
||
<para>
|
||
The Eclipse IDE is a popular development environment and it
|
||
fully supports development using the Yocto Project.
|
||
</para>
|
||
|
||
<para>
|
||
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 as well
|
||
as actual target hardware.
|
||
You can also perform cross-debugging and profiling.
|
||
The environment also supports performance enhancing
|
||
<ulink url='http://www.eclipse.org/linuxtools/'>tools</ulink>
|
||
that allow you to perform remote profiling, tracing,
|
||
collection of power data, collection of latency data, and
|
||
collection of performance data.
|
||
<note>
|
||
This release of the Yocto Project supports both the Neon
|
||
and Mars versions of the Eclipse IDE.
|
||
This section provides information on how to use the Neon
|
||
release with the Yocto Project.
|
||
For information on how to use the Mars version of Eclipse
|
||
with the Yocto Project, see
|
||
"<link linkend='sdk-appendix-latest-yp-eclipse-plug-in'>Appendix C</link>.
|
||
</note>
|
||
</para>
|
||
|
||
<section id='neon-setting-up-the-eclipse-ide'>
|
||
<title>Setting Up the Neon Version of the Eclipse IDE</title>
|
||
|
||
<para>
|
||
To develop within the Eclipse IDE, you need to do the
|
||
following:
|
||
<orderedlist>
|
||
<listitem><para>
|
||
Install the Neon version of the Eclipse IDE.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Configure the Eclipse IDE.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Install the Eclipse Yocto Plug-in.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Configure the Eclipse Yocto Plug-in.
|
||
</para></listitem>
|
||
</orderedlist>
|
||
<note>
|
||
Do not install Eclipse from your distribution's package
|
||
repository.
|
||
Be sure to install Eclipse from the official Eclipse
|
||
download site as directed in the next section.
|
||
</note>
|
||
</para>
|
||
|
||
<section id='neon-installing-eclipse-ide'>
|
||
<title>Installing the Neon Eclipse IDE</title>
|
||
|
||
<para>
|
||
Follow these steps to locate, install, and configure
|
||
Neon Eclipse:
|
||
<orderedlist>
|
||
<listitem><para>
|
||
<emphasis>Locate the Neon Download:</emphasis>
|
||
Open a browser and go to
|
||
<ulink url='http://www.eclipse.org/neon/'>http://www.eclipse.org/neon/</ulink>.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
<emphasis>Download the Tarball:</emphasis>
|
||
Click through the "Download" buttons to
|
||
download the file.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
<emphasis>Unpack the Tarball:</emphasis>
|
||
Move to a clean directory and unpack the
|
||
tarball.
|
||
Here is an example:
|
||
<literallayout class='monospaced'>
|
||
$ cd ~
|
||
$ tar -xzvf ~/Downloads/eclipse-inst-linux64.tar.gz
|
||
</literallayout>
|
||
Everything unpacks into a folder named
|
||
"eclipse-installer".
|
||
</para></listitem>
|
||
<listitem><para>
|
||
<emphasis>Launch the Installer:</emphasis>
|
||
Use the following commands to launch the
|
||
installer:
|
||
<literallayout class='monospaced'>
|
||
$ cd ~/eclipse-installer
|
||
$ ./eclipse-inst
|
||
</literallayout>
|
||
</para></listitem>
|
||
<listitem><para>
|
||
<emphasis>Select Your IDE:</emphasis>
|
||
From the list, select the "Eclipse IDE for
|
||
C/C++ Developers".
|
||
</para></listitem>
|
||
<listitem><para>
|
||
<emphasis>Install the Software:</emphasis>
|
||
Accept the default "cpp-neon" directory and
|
||
click "Install".
|
||
Accept any license agreements and approve any
|
||
certificates.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
<emphasis>Launch Neon:</emphasis>
|
||
Click the "Launch" button and accept the
|
||
default "workspace".
|
||
</para></listitem>
|
||
</orderedlist>
|
||
</para>
|
||
</section>
|
||
|
||
<section id='neon-configuring-the-mars-eclipse-ide'>
|
||
<title>Configuring the Neon Eclipse IDE</title>
|
||
|
||
<para>
|
||
Follow these steps to configure the Neon Eclipse IDE.
|
||
<note>
|
||
Depending on how you installed Eclipse and what
|
||
you have already done, some of the options will
|
||
not appear.
|
||
If you cannot find an option as directed by the
|
||
manual, it has already been installed.
|
||
</note>
|
||
<orderedlist>
|
||
<listitem><para>
|
||
Be sure Eclipse is running and you are in your
|
||
workbench.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Select "Install New Software" from the "Help"
|
||
pull-down menu.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Select
|
||
"Neon - http://download.eclipse.org/releases/neon"
|
||
from the "Work with:" pull-down menu.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Expand the box next to "Linux Tools" and select
|
||
the following:
|
||
<literallayout class='monospaced'>
|
||
C/C++ Remote (Over TCF/TE) Run/Debug Launcher
|
||
TM Terminal
|
||
</literallayout>
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Expand the box next to "Mobile and Device
|
||
Development" and select the following
|
||
boxes:
|
||
<literallayout class='monospaced'>
|
||
C/C++ Remote (Over TCF/TE) Run/Debug Launcher
|
||
Remote System Explorer User Actions
|
||
TM Terminal
|
||
TCF Remote System Explorer add-in
|
||
TCF Target Explorer
|
||
</literallayout>
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Expand the box next to "Programming Languages"
|
||
and select the following box:
|
||
<literallayout class='monospaced'>
|
||
C/C++ Development Tools SDK
|
||
</literallayout>
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Complete the installation by clicking through
|
||
appropriate "Next" and "Finish" buttons.
|
||
</para></listitem>
|
||
</orderedlist>
|
||
</para>
|
||
</section>
|
||
|
||
<section id='neon-installing-the-eclipse-yocto-plug-in'>
|
||
<title>Installing or Accessing the Neon Eclipse Yocto Plug-in</title>
|
||
|
||
<para>
|
||
You can install the Eclipse Yocto Plug-in into the
|
||
Eclipse IDE one of two ways: use the Yocto Project's
|
||
Eclipse Update site to install the pre-built plug-in
|
||
or build and install the plug-in from the latest
|
||
source code.
|
||
</para>
|
||
|
||
<section id='neon-new-software'>
|
||
<title>Installing the Pre-built Plug-in from the Yocto Project Eclipse Update Site</title>
|
||
|
||
<para>
|
||
To install the Neon Eclipse Yocto Plug-in from the
|
||
update site, follow these steps:
|
||
<orderedlist>
|
||
<listitem><para>
|
||
Start up the Eclipse IDE.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
In Eclipse, select "Install New
|
||
Software" from the "Help" menu.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Click "Add..." in the "Work with:" area.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Enter
|
||
<filename>&ECLIPSE_DL_PLUGIN_URL;/neon</filename>
|
||
in the URL field and provide a meaningful
|
||
name in the "Name" field.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Click "OK" to have the entry added
|
||
to the "Work with:" drop-down list.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Select the entry for the plug-in
|
||
from the "Work with:" drop-down list.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Check the boxes next to the following:
|
||
<literallayout class='monospaced'>
|
||
Yocto Project SDK Plug-in
|
||
Yocto Project Documentation plug-in
|
||
</literallayout>
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Complete the remaining software
|
||
installation steps and then restart the
|
||
Eclipse IDE to finish the installation of
|
||
the plug-in.
|
||
<note>
|
||
You can click "OK" when prompted about
|
||
installing software that contains
|
||
unsigned content.
|
||
</note>
|
||
</para></listitem>
|
||
</orderedlist>
|
||
</para>
|
||
</section>
|
||
|
||
<section id='neon-zip-file-method'>
|
||
<title>Installing the Plug-in Using the Latest Source Code</title>
|
||
|
||
<para>
|
||
To install the Neon Eclipse Yocto Plug-in from the
|
||
latest source code, follow these steps:
|
||
<orderedlist>
|
||
<listitem><para>
|
||
Be sure your development system
|
||
has JDK 1.8+
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Install X11-related packages:
|
||
<literallayout class='monospaced'>
|
||
$ sudo apt-get install xauth
|
||
</literallayout>
|
||
</para></listitem>
|
||
<listitem><para>
|
||
In a new terminal shell, create a
|
||
Git repository with:
|
||
<literallayout class='monospaced'>
|
||
$ cd ~
|
||
$ git clone git://git.yoctoproject.org/eclipse-poky
|
||
</literallayout>
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Use Git to create the correct tag:
|
||
<literallayout class='monospaced'>
|
||
$ cd ~/eclipse-poky
|
||
$ git checkout neon/yocto-&DISTRO;
|
||
</literallayout>
|
||
This creates a local tag named
|
||
<filename>neon/yocto-&DISTRO;</filename>
|
||
based on the branch
|
||
<filename>origin/neon-master</filename>.
|
||
You are put into a detached HEAD state,
|
||
which is fine since you are only going to
|
||
be building and not developing.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Change to the <filename>scripts</filename>
|
||
directory within the Git repository:
|
||
<literallayout class='monospaced'>
|
||
$ cd scripts
|
||
</literallayout>
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Set up the local build environment
|
||
by running the setup script:
|
||
<literallayout class='monospaced'>
|
||
$ ./setup.sh
|
||
</literallayout>
|
||
When the script finishes execution,
|
||
it prompts you with instructions on how to
|
||
run the <filename>build.sh</filename>
|
||
script, which is also in the
|
||
<filename>scripts</filename> directory of
|
||
the Git repository created earlier.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Run the <filename>build.sh</filename>
|
||
script as directed.
|
||
Be sure to provide the tag name,
|
||
documentation branch, and a release name.
|
||
</para>
|
||
<para>
|
||
Following is an example:
|
||
<literallayout class='monospaced'>
|
||
$ ECLIPSE_HOME=/home/scottrif/eclipse-poky/scripts/eclipse ./build.sh -l neon/yocto-&DISTRO; master yocto-&DISTRO; 2>&1 | tee build.log
|
||
</literallayout>
|
||
The previous example command adds the tag
|
||
you need for
|
||
<filename>mars/yocto-&DISTRO;</filename>
|
||
to <filename>HEAD</filename>, then tells
|
||
the build script to use the local (-l) Git
|
||
checkout for the build.
|
||
After running the script, the file
|
||
<filename>org.yocto.sdk-</filename><replaceable>release</replaceable><filename>-</filename><replaceable>date</replaceable><filename>-archive.zip</filename>
|
||
is in the current directory.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
If necessary, start the Eclipse IDE
|
||
and be sure you are in the Workbench.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Select "Install New Software" from
|
||
the "Help" pull-down menu.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Click "Add".
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Provide anything you want in the
|
||
"Name" field.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Click "Archive" and browse to the
|
||
ZIP file you built earlier.
|
||
This ZIP file should not be "unzipped", and
|
||
must be the
|
||
<filename>*archive.zip</filename> file
|
||
created by running the
|
||
<filename>build.sh</filename> script.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Click the "OK" button.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Check the boxes that appear in
|
||
the installation window to install the
|
||
following:
|
||
<literallayout class='monospaced'>
|
||
Yocto Project SDK Plug-in
|
||
Yocto Project Documentation plug-in
|
||
</literallayout>
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Finish the installation by clicking
|
||
through the appropriate buttons.
|
||
You can click "OK" when prompted about
|
||
installing software that contains unsigned
|
||
content.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Restart the Eclipse IDE if necessary.
|
||
</para></listitem>
|
||
</orderedlist>
|
||
</para>
|
||
|
||
<para>
|
||
At this point you should be able to configure the
|
||
Eclipse Yocto Plug-in as described in the
|
||
"<link linkend='mars-configuring-the-eclipse-yocto-plug-in'>Configuring the Neon Eclipse Yocto Plug-in</link>"
|
||
section.
|
||
</para>
|
||
</section>
|
||
</section>
|
||
|
||
<section id='neon-configuring-the-eclipse-yocto-plug-in'>
|
||
<title>Configuring the Neon Eclipse Yocto Plug-in</title>
|
||
|
||
<para>
|
||
Configuring the Neon Eclipse Yocto Plug-in involves
|
||
setting the Cross Compiler options and the Target
|
||
options.
|
||
The configurations you choose become the default
|
||
settings for all projects.
|
||
You do have opportunities to change them later when
|
||
you configure the project (see the following section).
|
||
</para>
|
||
|
||
<para>
|
||
To start, you need to do the following from within the
|
||
Eclipse IDE:
|
||
<itemizedlist>
|
||
<listitem><para>
|
||
Choose "Preferences" from the "Window" menu to
|
||
display the Preferences Dialog.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Click "Yocto Project SDK" to display
|
||
the configuration screen.
|
||
</para></listitem>
|
||
</itemizedlist>
|
||
The following sub-sections describe how to configure
|
||
the plug-in.
|
||
<note>
|
||
Throughout the descriptions, a start-to-finish
|
||
example for preparing a QEMU image for use with
|
||
Eclipse is referenced as the "wiki" and is linked
|
||
to the example on the
|
||
<ulink url='https://wiki.yoctoproject.org/wiki/TipsAndTricks/RunningEclipseAgainstBuiltImage'> Cookbook guide to Making an Eclipse Debug Capable Image</ulink>
|
||
wiki page.
|
||
</note>
|
||
</para>
|
||
|
||
<section id='neon-configuring-the-cross-compiler-options'>
|
||
<title>Configuring the Cross-Compiler Options</title>
|
||
|
||
<para>
|
||
Cross Compiler options enable Eclipse to use your
|
||
specific cross compiler toolchain.
|
||
To configure these options, you must select
|
||
the type of toolchain, point to the toolchain,
|
||
specify the sysroot location, and select the target
|
||
architecture.
|
||
<itemizedlist>
|
||
<listitem><para>
|
||
<emphasis>Selecting the Toolchain
|
||
Type:</emphasis>
|
||
Choose between
|
||
<filename>Standalone pre-built toolchain</filename>
|
||
and
|
||
<filename>Build system derived toolchain</filename>
|
||
for Cross Compiler Options.
|
||
<itemizedlist>
|
||
<listitem><para>
|
||
<emphasis>
|
||
<filename>Standalone Pre-built Toolchain:</filename>
|
||
</emphasis>
|
||
Select this type when you are using
|
||
a stand-alone cross-toolchain.
|
||
For example, suppose you are an
|
||
application developer and do not
|
||
need to build a target image.
|
||
Instead, you just want to use an
|
||
architecture-specific toolchain on
|
||
an existing kernel and target root
|
||
filesystem.
|
||
In other words, you have downloaded
|
||
and installed a pre-built toolchain
|
||
for an existing image.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
<emphasis>
|
||
<filename>Build System Derived Toolchain:</filename>
|
||
</emphasis>
|
||
Select this type if you built the
|
||
toolchain as part of the
|
||
<ulink url='&YOCTO_DOCS_DEV_URL;#build-directory'>Build Directory</ulink>.
|
||
When you select
|
||
<filename>Build system derived toolchain</filename>,
|
||
you are using the toolchain built
|
||
and bundled inside the Build
|
||
Directory.
|
||
For example, suppose you created a
|
||
suitable image using the steps in the
|
||
<ulink url='https://wiki.yoctoproject.org/wiki/TipsAndTricks/RunningEclipseAgainstBuiltImage'>wiki</ulink>.
|
||
In this situation, you would select
|
||
the
|
||
<filename>Build system derived toolchain</filename>.
|
||
</para></listitem>
|
||
</itemizedlist>
|
||
</para></listitem>
|
||
<listitem><para>
|
||
<emphasis>Specify the Toolchain Root
|
||
Location:</emphasis>
|
||
If you are using a stand-alone pre-built
|
||
toolchain, you should be pointing to where
|
||
it is installed (e.g.
|
||
<filename>/opt/poky/&DISTRO;</filename>).
|
||
See the
|
||
"<link linkend='sdk-installing-the-sdk'>Installing the SDK</link>"
|
||
section for information about how the SDK is
|
||
installed.</para>
|
||
<para>If you are using a build system
|
||
derived toolchain, the path you provide for
|
||
the
|
||
<filename>Toolchain Root Location</filename>
|
||
field is the
|
||
<ulink url='&YOCTO_DOCS_DEV_URL;#build-directory'>Build Directory</ulink>
|
||
from which you run the
|
||
<filename>bitbake</filename> command (e.g
|
||
<filename>/home/scottrif/poky/build</filename>).
|
||
</para>
|
||
<para>For more information, see the
|
||
"<link linkend='sdk-building-an-sdk-installer'>Building an SDK Installer</link>"
|
||
section.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
<emphasis>Specify Sysroot Location:
|
||
</emphasis>
|
||
This location is where the root filesystem
|
||
for the target hardware resides.
|
||
</para>
|
||
<para>This location depends on where you
|
||
separately extracted and installed the
|
||
target filesystem.
|
||
As an example, suppose you prepared an
|
||
image using the steps in the
|
||
<ulink url='https://wiki.yoctoproject.org/wiki/TipsAndTricks/RunningEclipseAgainstBuiltImage'>wiki</ulink>.
|
||
If so, the
|
||
<filename>MY_QEMU_ROOTFS</filename>
|
||
directory is found in the
|
||
<ulink url='&YOCTO_DOCS_DEV_URL;#build-directory'>Build Directory</ulink>
|
||
and you would browse to and select that
|
||
directory (e.g.
|
||
<filename>/home/scottrif/poky/build/MY_QEMU_ROOTFS</filename>).
|
||
</para>
|
||
<para>For more information on how to
|
||
install the toolchain and on how to extract
|
||
and install the sysroot filesystem, see the
|
||
"<link linkend='sdk-building-an-sdk-installer'>Building an SDK Installer</link>"
|
||
section.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
<emphasis>Select the Target Architecture:
|
||
</emphasis>
|
||
The target architecture is the type of
|
||
hardware you are going to use or emulate.
|
||
Use the pull-down
|
||
<filename>Target Architecture</filename>
|
||
menu to make your selection.
|
||
The pull-down menu should have the
|
||
supported architectures.
|
||
If the architecture you need is not listed
|
||
in the menu, you will need to build the
|
||
image.
|
||
See the
|
||
"<ulink url='&YOCTO_DOCS_QS_URL;#qs-building-images'>Building Images</ulink>"
|
||
section of the Yocto Project Quick Start
|
||
for more information.
|
||
You can also see the
|
||
<ulink url='https://wiki.yoctoproject.org/wiki/TipsAndTricks/RunningEclipseAgainstBuiltImage'>wiki</ulink>.
|
||
</para></listitem>
|
||
</itemizedlist>
|
||
</para>
|
||
</section>
|
||
|
||
<section id='neon-configuring-the-target-options'>
|
||
<title>Configuring the Target Options</title>
|
||
|
||
<para>
|
||
You can choose to emulate hardware using the QEMU
|
||
emulator, or you can choose to run your image on
|
||
actual hardware.
|
||
<itemizedlist>
|
||
<listitem><para>
|
||
<emphasis>QEMU:</emphasis>
|
||
Select this option if you will be using the
|
||
QEMU emulator.
|
||
If you are using the emulator, you also
|
||
need to locate the kernel and specify any
|
||
custom options.</para>
|
||
<para>If you selected the
|
||
<filename>Build system derived toolchain</filename>,
|
||
the target kernel you built will be located
|
||
in the
|
||
<ulink url='&YOCTO_DOCS_DEV_URL;#build-directory'>Build Directory</ulink>
|
||
in
|
||
<filename>tmp/deploy/images/<replaceable>machine</replaceable></filename>
|
||
directory.
|
||
As an example, suppose you performed the
|
||
steps in the
|
||
<ulink url='https://wiki.yoctoproject.org/wiki/TipsAndTricks/RunningEclipseAgainstBuiltImage'>wiki</ulink>.
|
||
In this case, you specify your Build
|
||
Directory path followed by the image (e.g.
|
||
<filename>/home/scottrif/poky/build/tmp/deploy/images/qemux86/bzImage-qemux86.bin</filename>).
|
||
</para>
|
||
<para>If you selected the standalone
|
||
pre-built toolchain, the pre-built image
|
||
you downloaded is located in the directory
|
||
you specified when you downloaded the
|
||
image.</para>
|
||
<para>Most custom options are for advanced
|
||
QEMU users to further customize their QEMU
|
||
instance.
|
||
These options are specified between paired
|
||
angled brackets.
|
||
Some options must be specified outside the
|
||
brackets.
|
||
In particular, the options
|
||
<filename>serial</filename>,
|
||
<filename>nographic</filename>, and
|
||
<filename>kvm</filename> must all be
|
||
outside the brackets.
|
||
Use the <filename>man qemu</filename>
|
||
command to get help on all the options and
|
||
their use.
|
||
The following is an example:
|
||
<literallayout class='monospaced'>
|
||
serial ‘<-m 256 -full-screen>’
|
||
</literallayout></para>
|
||
<para>
|
||
Regardless of the mode, Sysroot is already
|
||
defined as part of the Cross-Compiler
|
||
Options configuration in the
|
||
<filename>Sysroot Location:</filename>
|
||
field.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
<emphasis>External HW:</emphasis>
|
||
Select this option if you will be using
|
||
actual hardware.</para></listitem>
|
||
</itemizedlist>
|
||
</para>
|
||
|
||
<para>
|
||
Click the "Apply" and "OK" to save your plug-in
|
||
configurations.
|
||
</para>
|
||
</section>
|
||
</section>
|
||
</section>
|
||
|
||
<section id='neon-creating-the-project'>
|
||
<title>Creating the Project</title>
|
||
|
||
<para>
|
||
You can create two types of projects: Autotools-based, or
|
||
Makefile-based.
|
||
This section describes how to create Autotools-based
|
||
projects from within the Eclipse IDE.
|
||
For information on creating Makefile-based projects in a
|
||
terminal window, see the
|
||
"<link linkend='makefile-based-projects'>Makefile-Based Projects</link>"
|
||
section.
|
||
<note>
|
||
Do not use special characters in project names
|
||
(e.g. spaces, underscores, etc.). Doing so can
|
||
cause configuration to fail.
|
||
</note>
|
||
</para>
|
||
|
||
<para>
|
||
To create a project based on a Yocto template and then
|
||
display the source code, follow these steps:
|
||
<orderedlist>
|
||
<listitem><para>
|
||
Select "C Project" from the "File -> New" menu.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Expand
|
||
<filename>Yocto Project SDK Autotools Project</filename>.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Select <filename>Hello World ANSI C Autotools Projects</filename>.
|
||
This is an Autotools-based project based on a Yocto
|
||
template.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Put a name in the
|
||
<filename>Project name:</filename> field.
|
||
Do not use hyphens as part of the name
|
||
(e.g. <filename>hello</filename>).
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Click "Next".
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Add appropriate information in the various fields.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Click "Finish".
|
||
</para></listitem>
|
||
<listitem><para>
|
||
If the "open perspective" prompt appears,
|
||
click "Yes" so that you in the C/C++ perspective.
|
||
</para></listitem>
|
||
<listitem><para>The left-hand navigation pane shows
|
||
your project.
|
||
You can display your source by double clicking the
|
||
project's source file.
|
||
</para></listitem>
|
||
</orderedlist>
|
||
</para>
|
||
</section>
|
||
|
||
<section id='neon-configuring-the-cross-toolchains'>
|
||
<title>Configuring the Cross-Toolchains</title>
|
||
|
||
<para>
|
||
The earlier section,
|
||
"<link linkend='neon-configuring-the-eclipse-yocto-plug-in'>Configuring the Neon Eclipse Yocto Plug-in</link>",
|
||
sets up the default project configurations.
|
||
You can override these settings for a given project by
|
||
following these steps:
|
||
<orderedlist>
|
||
<listitem><para>
|
||
Select "Yocto Project Settings" from
|
||
the "Project -> Properties" menu.
|
||
This selection brings up the Yocto Project Settings
|
||
Dialog and allows you to make changes specific to
|
||
an individual project.</para>
|
||
<para>By default, the Cross Compiler Options and
|
||
Target Options for a project are inherited from
|
||
settings you provided using the Preferences Dialog
|
||
as described earlier in the
|
||
"<link linkend='neon-configuring-the-eclipse-yocto-plug-in'>Configuring the Neon Eclipse Yocto Plug-in</link>"
|
||
section.
|
||
The Yocto Project Settings Dialog allows you to
|
||
override those default settings for a given
|
||
project.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Make or verify your configurations for the
|
||
project and click "OK".
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Right-click in the navigation pane and
|
||
select "Reconfigure Project" from the pop-up menu.
|
||
This selection reconfigures the project by running
|
||
<filename>autogen.sh</filename> in the workspace
|
||
for your project.
|
||
The script also runs
|
||
<filename>libtoolize</filename>,
|
||
<filename>aclocal</filename>,
|
||
<filename>autoconf</filename>,
|
||
<filename>autoheader</filename>,
|
||
<filename>automake --a</filename>, and
|
||
<filename>./configure</filename>.
|
||
Click on the "Console" tab beneath your source code
|
||
to see the results of reconfiguring your project.
|
||
</para></listitem>
|
||
</orderedlist>
|
||
</para>
|
||
</section>
|
||
|
||
<section id='neon-building-the-project'>
|
||
<title>Building the Project</title>
|
||
|
||
<para>
|
||
To build the project select "Build All" from the
|
||
"Project" menu.
|
||
The console should update and you can note the
|
||
cross-compiler you are using.
|
||
<note>
|
||
When building "Yocto Project SDK Autotools" projects,
|
||
the Eclipse IDE might display error messages for
|
||
Functions/Symbols/Types that cannot be "resolved",
|
||
even when the related include file is listed at the
|
||
project navigator and when the project is able to
|
||
build.
|
||
For these cases only, it is recommended to add a new
|
||
linked folder to the appropriate sysroot.
|
||
Use these steps to add the linked folder:
|
||
<orderedlist>
|
||
<listitem><para>
|
||
Select the project.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Select "Folder" from the
|
||
<filename>File > New</filename> menu.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
In the "New Folder" Dialog, select "Link to
|
||
alternate location (linked folder)".
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Click "Browse" to navigate to the include
|
||
folder inside the same sysroot location
|
||
selected in the Yocto Project
|
||
configuration preferences.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Click "OK".
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Click "Finish" to save the linked folder.
|
||
</para></listitem>
|
||
</orderedlist>
|
||
</note>
|
||
</para>
|
||
</section>
|
||
|
||
<section id='neon-starting-qemu-in-user-space-nfs-mode'>
|
||
<title>Starting QEMU in User-Space NFS Mode</title>
|
||
|
||
<para>
|
||
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>"
|
||
chapter in the Yocto Project Development Manual
|
||
for more information on using QEMU.
|
||
</note>
|
||
<orderedlist>
|
||
<listitem><para>Expose and select "External Tools
|
||
Configurations ..." from the "Run -> External
|
||
Tools" menu.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Locate and select your image in the navigation
|
||
panel to the left
|
||
(e.g. <filename>qemu_i586-poky-linux</filename>).
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Click "Run" to launch QEMU.
|
||
<note>
|
||
The host on which you are running QEMU must
|
||
have the <filename>rpcbind</filename> utility
|
||
running to be able to make RPC calls on a
|
||
server on that machine.
|
||
If QEMU does not invoke and you receive error
|
||
messages involving
|
||
<filename>rpcbind</filename>, follow the
|
||
suggestions to get the service running.
|
||
As an example, on a new Ubuntu 16.04 LTS
|
||
installation, you must do the following in
|
||
order to get QEMU to launch:
|
||
<literallayout class='monospaced'>
|
||
$ sudo apt-get install rpcbind
|
||
</literallayout>
|
||
After installing <filename>rpcbind</filename>,
|
||
you need to edit the
|
||
<filename>/etc/init.d/rpcbind</filename> file
|
||
to include the following line:
|
||
<literallayout class='monospaced'>
|
||
OPTIONS="-i -w"
|
||
</literallayout>
|
||
After modifying the file, you need to start the
|
||
service:
|
||
<literallayout class='monospaced'>
|
||
$ sudo service portmap restart
|
||
</literallayout>
|
||
</note>
|
||
</para></listitem>
|
||
<listitem><para>
|
||
If needed, enter your host root password in
|
||
the shell window at the prompt.
|
||
This sets up a <filename>Tap 0</filename>
|
||
connection needed for running in user-space NFS
|
||
mode.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Wait for QEMU to launch.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Once QEMU launches, you can begin operating
|
||
within that environment.
|
||
One useful task at this point would be to determine
|
||
the IP Address for the user-space NFS by using the
|
||
<filename>ifconfig</filename> command.
|
||
The IP address of the QEMU machine appears in the
|
||
xterm window.
|
||
You can use this address to help you see which
|
||
particular
|
||
IP address the instance of QEMU is using.
|
||
</para></listitem>
|
||
</orderedlist>
|
||
</para>
|
||
</section>
|
||
|
||
<section id='neon-deploying-and-debugging-the-application'>
|
||
<title>Deploying and Debugging the Application</title>
|
||
|
||
<para>
|
||
Once the QEMU emulator is running the image, you can deploy
|
||
your application using the Eclipse IDE and then use
|
||
the emulator to perform debugging.
|
||
Follow these steps to deploy the application.
|
||
<note>
|
||
Currently, Eclipse does not support SSH port
|
||
forwarding.
|
||
Consequently, if you need to run or debug a remote
|
||
application using the host display, you must create a
|
||
tunneling connection from outside Eclipse and keep
|
||
that connection alive during your work.
|
||
For example, in a new terminal, run the following:
|
||
<literallayout class='monospaced'>
|
||
$ ssh -XY <replaceable>user_name</replaceable>@<replaceable>remote_host_ip</replaceable>
|
||
</literallayout>
|
||
Using the above form, here is an example:
|
||
<literallayout class='monospaced'>
|
||
$ ssh -XY root@192.168.7.2
|
||
</literallayout>
|
||
After running the command, add the command to be
|
||
executed in Eclipse's run configuration before the
|
||
application as follows:
|
||
<literallayout class='monospaced'>
|
||
export DISPLAY=:10.0
|
||
</literallayout>
|
||
Be sure to not destroy the connection during your QEMU
|
||
session (i.e. do not
|
||
exit out of or close that shell).
|
||
</note>
|
||
<orderedlist>
|
||
<listitem><para>
|
||
Select "Debug Configurations..." from the
|
||
"Run" menu.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
In the left area, expand
|
||
<filename>C/C++Remote Application</filename>.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Locate your project and select it to bring
|
||
up a new tabbed view in the Debug Configurations
|
||
Dialog.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Click on the "Debugger" tab to see the
|
||
cross-tool debugger you are using.
|
||
Be sure to change to the debugger perspective in
|
||
Eclipse.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Click on the "Main" tab.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Create a new connection to the QEMU instance
|
||
by clicking on "new".</para></listitem>
|
||
<listitem><para>Select <filename>SSH</filename>, which
|
||
means Secure Socket Shell and then click "OK".
|
||
Optionally, you can select an TCF connection
|
||
instead.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Clear out the "Connection name" field and
|
||
enter any name you want for the connection.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Put the IP address for the connection in
|
||
the "Host" field.
|
||
For QEMU, the default is
|
||
<filename>192.168.7.2</filename>.
|
||
However, if a previous QEMU session did not exit
|
||
cleanly, the IP address increments (e.g.
|
||
<filename>192.168.7.3</filename>).
|
||
<note>
|
||
You can find the IP address for the current
|
||
QEMU session by looking in the xterm that
|
||
opens when you launch QEMU.
|
||
</note>
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Enter <filename>root</filename>, which
|
||
is the default for QEMU, for the "User" field.
|
||
Be sure to leave the password field empty.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Click "Finish" to close the New Connections Dialog.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
If necessary, use the drop-down menu now in the
|
||
"Connection" field and pick the IP Address you
|
||
entered.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Assuming you are connecting as the root
|
||
user, which is the default for QEMU x86-64 SDK
|
||
images provided by the Yocto Project, in the
|
||
"Remote Absolute File Path for C/C++ Application"
|
||
field, browse to
|
||
<filename>/home/root/</filename><replaceable>ProjectName</replaceable>
|
||
(e.g. <filename>/home/root/hello</filename>).
|
||
You could also browse to any other path you have
|
||
write access to on the target such as
|
||
<filename>/usr/bin</filename>.
|
||
This location is where your application will be
|
||
located on the QEMU system.
|
||
If you fail to browse to and specify an appropriate
|
||
location, QEMU will not understand what to remotely
|
||
launch.
|
||
Eclipse is helpful in that it auto fills your
|
||
application name for you assuming you browsed to a
|
||
directory.
|
||
<note>
|
||
If you are prompted to provide a username and
|
||
to optionally set a password, be sure you
|
||
provide "root" as the username and you leave
|
||
the password field blank.
|
||
</note>
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Be sure you change to the "Debug" perspective in
|
||
Eclipse.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Click "Debug"
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Accept the debug perspective.
|
||
</para></listitem>
|
||
</orderedlist>
|
||
</para>
|
||
</section>
|
||
|
||
<section id='neon-using-Linuxtools'>
|
||
<title>Using Linuxtools</title>
|
||
|
||
<para>
|
||
As mentioned earlier in the manual, performance tools exist
|
||
(Linuxtools) that enhance your development experience.
|
||
These tools are aids in developing and debugging
|
||
applications and images.
|
||
You can run these tools from within the Eclipse IDE through
|
||
the "Linuxtools" menu.
|
||
</para>
|
||
|
||
<para>
|
||
For information on how to configure and use these tools,
|
||
see
|
||
<ulink url='http://www.eclipse.org/linuxtools/'>http://www.eclipse.org/linuxtools/</ulink>.
|
||
</para>
|
||
</section>
|
||
</section>
|
||
</section>
|
||
</chapter>
|
||
<!--
|
||
vim: expandtab tw=80 ts=4
|
||
-->
|