diff options
Diffstat (limited to 'yocto-poky/documentation/adt-manual/adt-command.xml')
-rw-r--r-- | yocto-poky/documentation/adt-manual/adt-command.xml | 265 |
1 files changed, 0 insertions, 265 deletions
diff --git a/yocto-poky/documentation/adt-manual/adt-command.xml b/yocto-poky/documentation/adt-manual/adt-command.xml deleted file mode 100644 index c78d18a16..000000000 --- a/yocto-poky/documentation/adt-manual/adt-command.xml +++ /dev/null @@ -1,265 +0,0 @@ -<!DOCTYPE chapter PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" -"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd" -[<!ENTITY % poky SYSTEM "../poky.ent"> %poky; ] > - -<chapter id='using-the-command-line'> -<title>Using the Command Line</title> - - <para> - Recall that earlier the manual discussed how to use an existing toolchain - tarball that had been installed into the default installation - directory, <filename>/opt/poky/&DISTRO;</filename>, which is outside of the - <ulink url='&YOCTO_DOCS_DEV_URL;#build-directory'>Build Directory</ulink> - (see the section "<link linkend='using-an-existing-toolchain-tarball'>Using a Cross-Toolchain Tarball)</link>". - And, that sourcing your architecture-specific environment setup script - initializes a suitable cross-toolchain development environment. - </para> - - <para> - During this setup, locations for the compiler, QEMU scripts, QEMU binary, - a special version of <filename>pkgconfig</filename> and other useful - utilities are added to the <filename>PATH</filename> variable. - Also, variables to assist - <filename>pkgconfig</filename> and <filename>autotools</filename> - are also defined so that, for example, <filename>configure.sh</filename> - can find pre-generated test results for tests that need target hardware - on which to run. - You can see the - "<link linkend='setting-up-the-cross-development-environment'>Setting Up the Cross-Development Environment</link>" - section for the list of cross-toolchain environment variables - established by the script. - </para> - - <para> - Collectively, these conditions allow you to easily use the toolchain - outside of the OpenEmbedded build environment on both Autotools-based - projects and Makefile-based projects. - This chapter provides information for both these types of projects. - </para> - - -<section id='autotools-based-projects'> -<title>Autotools-Based Projects</title> - - <para> - 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> - - <section id='creating-and-running-a-project-based-on-gnu-autotools'> - <title>Creating and Running a Project Based on GNU Autotools</title> - - <para> - Follow these steps to create a simple Autotools-based project: - <orderedlist> - <listitem><para><emphasis>Create your directory:</emphasis> - Create a clean directory for your project and then make - that directory your working location: - <literallayout class='monospaced'> - $ mkdir $HOME/helloworld - $ cd $HOME/helloworld - </literallayout></para></listitem> - <listitem><para><emphasis>Populate the directory:</emphasis> - Create <filename>hello.c</filename>, <filename>Makefile.am</filename>, - and <filename>configure.in</filename> files as follows: - <itemizedlist> - <listitem><para>For <filename>hello.c</filename>, include - these lines: - <literallayout class='monospaced'> - #include <stdio.h> - - main() - { - printf("Hello World!\n"); - } - </literallayout></para></listitem> - <listitem><para>For <filename>Makefile.am</filename>, - include these lines: - <literallayout class='monospaced'> - bin_PROGRAMS = hello - hello_SOURCES = hello.c - </literallayout></para></listitem> - <listitem><para>For <filename>configure.in</filename>, - include these lines: - <literallayout class='monospaced'> - AC_INIT(hello.c) - AM_INIT_AUTOMAKE(hello,0.1) - AC_PROG_CC - AC_PROG_INSTALL - AC_OUTPUT(Makefile) - </literallayout></para></listitem> - </itemizedlist></para></listitem> - <listitem><para><emphasis>Source the cross-toolchain - environment setup file:</emphasis> - Installation of the cross-toolchain creates a cross-toolchain - environment setup script in the directory that the ADT - was installed. - Before you can use the tools to develop your project, you must - source this setup script. - The script begins with the string "environment-setup" and contains - the machine architecture, which is followed by the string - "poky-linux". - Here is an example that sources a script from the - default ADT installation directory that uses the - 32-bit Intel x86 Architecture and the - &DISTRO_NAME; Yocto Project release: - <literallayout class='monospaced'> - $ source /opt/poky/&DISTRO;/environment-setup-i586-poky-linux - </literallayout></para></listitem> - <listitem><para><emphasis>Generate the local aclocal.m4 - files and create the configure script:</emphasis> - The following GNU Autotools generate the local - <filename>aclocal.m4</filename> files and create the - configure script: - <literallayout class='monospaced'> - $ aclocal - $ autoconf - </literallayout></para></listitem> - <listitem><para><emphasis>Generate files needed by GNU - coding standards:</emphasis> - GNU coding standards require certain files in order for the - project to be compliant. - This command creates those files: - <literallayout class='monospaced'> - $ touch NEWS README AUTHORS ChangeLog - </literallayout></para></listitem> - <listitem><para><emphasis>Generate the configure - file:</emphasis> - This command generates the <filename>configure</filename>: - <literallayout class='monospaced'> - $ automake -a - </literallayout></para></listitem> - <listitem><para><emphasis>Cross-compile the project:</emphasis> - This command compiles the project using the cross-compiler. - The - <ulink url='&YOCTO_DOCS_REF_URL;#var-CONFIGURE_FLAGS'><filename>CONFIGURE_FLAGS</filename></ulink> - environment variable provides the minimal arguments for - GNU configure: - <literallayout class='monospaced'> - $ ./configure ${CONFIGURE_FLAGS} - </literallayout></para></listitem> - <listitem><para><emphasis>Make and install the project:</emphasis> - These two commands generate and install the project into the - destination directory: - <literallayout class='monospaced'> - $ make - $ make install DESTDIR=./tmp - </literallayout></para></listitem> - <listitem><para><emphasis>Verify the installation:</emphasis> - This command is a simple way to verify the installation - of your project. - Running the command prints the architecture on which - the binary file can run. - This architecture should be the same architecture that - the installed cross-toolchain supports. - <literallayout class='monospaced'> - $ file ./tmp/usr/local/bin/hello - </literallayout></para></listitem> - <listitem><para><emphasis>Execute your project:</emphasis> - To execute the project in the shell, simply enter the name. - You could also copy the binary to the actual target hardware - and run the project there as well: - <literallayout class='monospaced'> - $ ./hello - </literallayout> - As expected, the project displays the "Hello World!" message. - </para></listitem> - </orderedlist> - </para> - </section> - - <section id='passing-host-options'> - <title>Passing Host Options</title> - - <para> - For an Autotools-based project, you can use the cross-toolchain by just - passing the appropriate host option to <filename>configure.sh</filename>. - The host option you use is derived from the name of the environment setup - script found in the directory in which you installed the cross-toolchain. - For example, the host option for an ARM-based target that uses the GNU EABI - is <filename>armv5te-poky-linux-gnueabi</filename>. - You will notice that the name of the script is - <filename>environment-setup-armv5te-poky-linux-gnueabi</filename>. - Thus, the following command works to update your project and - rebuild it using the appropriate cross-toolchain tools: - <literallayout class='monospaced'> - $ ./configure --host=armv5te-poky-linux-gnueabi \ - --with-libtool-sysroot=<replaceable>sysroot_dir</replaceable> - </literallayout> - <note> - If the <filename>configure</filename> script results in problems recognizing the - <filename>--with-libtool-sysroot=</filename><replaceable>sysroot-dir</replaceable> option, - regenerate the script to enable the support by doing the following and then - run the script again: - <literallayout class='monospaced'> - $ libtoolize --automake - $ aclocal -I ${OECORE_NATIVE_SYSROOT}/usr/share/aclocal \ - [-I <replaceable>dir_containing_your_project-specific_m4_macros</replaceable>] - $ autoconf - $ autoheader - $ automake -a - </literallayout> - </note> - </para> - </section> -</section> - -<section id='makefile-based-projects'> -<title>Makefile-Based Projects</title> - - <para> - 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. - </para> - - <para> - To illustrate this, consider the following four cross-toolchain - environment variables: - <literallayout class='monospaced'> - <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 - <ulink url='&YOCTO_DOCS_REF_URL;#var-LD'>LD</ulink>=i586-poky-linux-ld --sysroot=/opt/poky/1.8/sysroots/i586-poky-linux - <ulink url='&YOCTO_DOCS_REF_URL;#var-CFLAGS'>CFLAGS</ulink>=-O2 -pipe -g -feliminate-unused-debug-types - <ulink url='&YOCTO_DOCS_REF_URL;#var-CXXFLAGS'>CXXFLAGS</ulink>=-O2 -pipe -g -feliminate-unused-debug-types - </literallayout> - Now, consider the following three cases: - <itemizedlist> - <listitem><para><emphasis>Case 1 - No Variables Set in the <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='setting-up-the-cross-development-environment'>Setting Up the Cross-Development Environment</link>" - section. - </note> - </para> -</section> -</chapter> -<!-- -vim: expandtab tw=80 ts=4 ---> |