dev-manual: Added new section on changing default image hostname
Fixes [YOCTO #7417] New section to address how the user can change the devalt image hostname written out to /etc/hostname. (From yocto-docs rev: 4ac6bc05947e56106aafcc6f9aef93bd93293fba) Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Scott Rifenbark
Richard Purdie
parent
1345195137
commit
083d4a36a2
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@ -741,13 +741,13 @@
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...
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DESCRIPTION = "A useful utility"
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...
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EXTRA_OECONF = "--enable-something"
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EXTRA_OECONF = "‐‐enable-something"
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...
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#### bbappended from meta-anotherlayer ####
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DESCRIPTION = "Customized utility"
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EXTRA_OECONF += "--enable-somethingelse"
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EXTRA_OECONF += "‐‐enable-somethingelse"
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</literallayout>
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Ideally, you would tidy up these utilities as
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follows:
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@ -755,7 +755,7 @@
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...
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DESCRIPTION = "Customized utility"
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...
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EXTRA_OECONF = "--enable-something --enable-somethingelse"
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EXTRA_OECONF = "‐‐enable-something ‐‐enable-somethingelse"
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...
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</literallayout></para></listitem>
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</itemizedlist></para></listitem>
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@ -1170,6 +1170,61 @@
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For other forms of image dependencies see the other areas of this section.
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</para>
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</section>
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<section id='usingpoky-extend-customimage-image-name'>
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<title>Customizing an Image Hostname</title>
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<para>
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By default the configured hostname (i.e.
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<filename>/etc/hostname</filename>) in an image is the
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same as the machine name.
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For example, if
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<ulink url='&YOCTO_DOCS_REF_URL;#var-MACHINE'><filename>MACHINE</filename></ulink>
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equals "qemux86", the configured hostname written to
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<filename>/etc/hostname</filename> is "qemux86".
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</para>
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<para>
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You can customize this name by altering the value of the
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"hostname" variable in the base-files recipe using either
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an append file or a configuration file.
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<note>
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Setting the variable to "" causes no hostname to be
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written to <filename>/etc/hostname</filename>.
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</note>
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Use the following in an append file:
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<literallayout class='monospaced'>
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hostname="myhostname"
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</literallayout>
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Use the following in a configuration file:
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<literallayout class='monospaced'>
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hostname_pn-base-files = "myhostname"
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</literallayout>
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</para>
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<para>
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Changing the default value of the variable "hostname" can be
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useful in certain situations.
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For example, suppose you need to do extensive testing on an
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image and you would like to easily identify the image
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under test from existing images with typical default
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hostnames.
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In this situation, you could change the default hostname to
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"testme", which results in all the images using the name
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"testme".
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Once testing is complete and you do not need to rebuild the
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image for test any longer, you can easily reset the default
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hostname.
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</para>
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<para>
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Another point of interest is that if you leave the variable
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"hostname" unset, the image will have no default hostname
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in the filesystem.
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This condition is suitable for environments that use
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dynamic hostnames such as virtual machines.
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</para>
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</section>
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</section>
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<section id='new-recipe-writing-a-new-recipe'>
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@ -2275,7 +2330,7 @@
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configure script with the appropriate options.</para>
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<para>For the case involving a custom configure
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script, you would run
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<filename>./configure --help</filename> and look for
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<filename>./configure ‐‐help</filename> and look for
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the options you need to set.</para></listitem>
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</itemizedlist>
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</para>
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@ -2298,7 +2353,7 @@
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configure script as needed.
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For reference information on configure options specific to the
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software you are building, you can consult the output of the
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<filename>./configure --help</filename> command within
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<filename>./configure ‐‐help</filename> command within
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<filename>${S}</filename> or consult the software's upstream
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documentation.
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</para>
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@ -3780,7 +3835,7 @@
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or by entering the command with a help argument as follows:
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<literallayout class='monospaced'>
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$ wic -h
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$ wic --help
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$ wic ‐‐help
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</literallayout>
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</para>
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@ -3796,7 +3851,7 @@
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<para>
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You can also get detailed help on a number of topics
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from the help system.
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The output of <filename>wic --help</filename>
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The output of <filename>wic ‐‐help</filename>
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displays a list of available help
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topics under a "Help topics" heading.
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You can have the help system display the help text for
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@ -3866,38 +3921,38 @@
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your own custom file or use a file from a set of
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existing files as described by further options.
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-o <replaceable>OUTDIR</replaceable>, --outdir=<replaceable>OUTDIR</replaceable>
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-o <replaceable>OUTDIR</replaceable>, ‐‐outdir=<replaceable>OUTDIR</replaceable>
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The name of a directory in which to create image.
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-i <replaceable>PROPERTIES_FILE</replaceable>, --infile=<replaceable>PROPERTIES_FILE</replaceable>
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-i <replaceable>PROPERTIES_FILE</replaceable>, ‐‐infile=<replaceable>PROPERTIES_FILE</replaceable>
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The name of a file containing the values for image
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properties as a JSON file.
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-e <replaceable>IMAGE_NAME</replaceable>, --image-name=<replaceable>IMAGE_NAME</replaceable>
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-e <replaceable>IMAGE_NAME</replaceable>, ‐‐image-name=<replaceable>IMAGE_NAME</replaceable>
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The name of the image from which to use the artifacts
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(e.g. <filename>core-image-sato</filename>).
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-r <replaceable>ROOTFS_DIR</replaceable>, --rootfs-dir=<replaceable>ROOTFS_DIR</replaceable>
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-r <replaceable>ROOTFS_DIR</replaceable>, ‐‐rootfs-dir=<replaceable>ROOTFS_DIR</replaceable>
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The path to the <filename>/rootfs</filename> directory to use as the
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<filename>.wks</filename> rootfs source.
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-b <replaceable>BOOTIMG_DIR</replaceable>, --bootimg-dir=<replaceable>BOOTIMG_DIR</replaceable>
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-b <replaceable>BOOTIMG_DIR</replaceable>, ‐‐bootimg-dir=<replaceable>BOOTIMG_DIR</replaceable>
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The path to the directory containing the boot artifacts
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(e.g. <filename>/EFI</filename> or <filename>/syslinux</filename>) to use as the <filename>.wks</filename> bootimg
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source.
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-k <replaceable>KERNEL_DIR</replaceable>, --kernel-dir=<replaceable>KERNEL_DIR</replaceable>
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-k <replaceable>KERNEL_DIR</replaceable>, ‐‐kernel-dir=<replaceable>KERNEL_DIR</replaceable>
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The path to the directory containing the kernel to use
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in the <filename>.wks</filename> boot image.
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-n <replaceable>NATIVE_SYSROOT</replaceable>, --native-sysroot=<replaceable>NATIVE_SYSROOT</replaceable>
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-n <replaceable>NATIVE_SYSROOT</replaceable>, ‐‐native-sysroot=<replaceable>NATIVE_SYSROOT</replaceable>
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The path to the native sysroot containing the tools to use
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to build the image.
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-s, --skip-build-check
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-s, ‐‐skip-build-check
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Skips the build check.
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-D, --debug
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-D, ‐‐debug
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Output debug information.
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</literallayout>
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<note>
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@ -4107,13 +4162,13 @@
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</literallayout>
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Next, the example modifies the
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<filename>directdisksdb.wks</filename> file and changes all
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instances of "<filename>--ondisk sda</filename>"
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to "<filename>--ondisk sdb</filename>".
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instances of "<filename>‐‐ondisk sda</filename>"
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to "<filename>‐‐ondisk sdb</filename>".
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The example changes the following two lines and leaves the
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remaining lines untouched:
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<literallayout class='monospaced'>
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part /boot --source bootimg-pcbios --ondisk sdb --label boot --active --align 1024
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part / --source rootfs --ondisk sdb --fstype=ext3 --label platform --align 1024
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part /boot ‐‐source bootimg-pcbios ‐‐ondisk sdb ‐‐label boot ‐‐active ‐‐align 1024
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part / ‐‐source rootfs ‐‐ondisk sdb ‐‐fstype=ext3 ‐‐label platform ‐‐align 1024
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</literallayout>
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Once the lines are changed, the example generates the
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<filename>directdisksdb</filename> image.
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@ -4200,11 +4255,11 @@
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somewhere other than the default
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<filename>/var/tmp/wic</filename> directory:
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<literallayout class='monospaced'>
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$ wic create ~/test.wks -o /home/trz/testwic --rootfs-dir \
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$ wic create ~/test.wks -o /home/trz/testwic ‐‐rootfs-dir \
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/home/trz/yocto/yocto-image/build/tmp/work/crownbay_noemgd-poky-linux/core-image-minimal/1.0-r0/rootfs \
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--bootimg-dir /home/trz/yocto/yocto-image/build/tmp/sysroots/crownbay-noemgd/usr/share \
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--kernel-dir /home/trz/yocto/yocto-image/build/tmp/sysroots/crownbay-noemgd/usr/src/kernel \
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--native-sysroot /home/trz/yocto/yocto-image/build/tmp/sysroots/x86_64-linux
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‐‐bootimg-dir /home/trz/yocto/yocto-image/build/tmp/sysroots/crownbay-noemgd/usr/share \
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‐‐kernel-dir /home/trz/yocto/yocto-image/build/tmp/sysroots/crownbay-noemgd/usr/src/kernel \
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‐‐native-sysroot /home/trz/yocto/yocto-image/build/tmp/sysroots/x86_64-linux
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Creating image(s)...
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@ -4247,7 +4302,7 @@
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partitions.
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The plugins provide a mechanism for mapping values
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specified in <filename>.wks</filename> files using the
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<filename>--source</filename> keyword to a
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<filename>‐‐source</filename> keyword to a
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particular plugin implementation that populates a
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corresponding partition.
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</para>
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@ -4276,11 +4331,11 @@
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When the <filename>wic</filename> implementation needs
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to invoke a partition-specific implementation, it looks
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for the plugin that has the same name as the
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<filename>--source</filename> parameter given to
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<filename>‐‐source</filename> parameter given to
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that partition.
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For example, if the partition is set up as follows:
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<literallayout class='monospaced'>
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part /boot --source bootimg-pcbios ...
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part /boot ‐‐source bootimg-pcbios ...
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</literallayout>
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The methods defined as class members of the plugin
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having the matching <filename>bootimg-pcbios.name</filename>
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@ -4290,7 +4345,7 @@
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<para>
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To be more concrete, here is the plugin definition that
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matches a
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<filename>--source bootimg-pcbios</filename> usage,
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<filename>‐‐source bootimg-pcbios</filename> usage,
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along with an example
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method called by the <filename>wic</filename> implementation
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when it needs to invoke an implementation-specific
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@ -4312,7 +4367,7 @@
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The <filename>SourcePlugin</filename> class defines the
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following methods, which is the current set of methods
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that can be implemented or overridden by
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<filename>--source</filename> plugins.
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<filename>‐‐source</filename> plugins.
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Any methods not implemented by a
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<filename>SourcePlugin</filename> subclass inherit the
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implementations present in the
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@ -4444,13 +4499,13 @@
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<para>
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Following are the supported options:
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<itemizedlist>
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<listitem><para><emphasis><filename>--size</filename>:</emphasis>
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<listitem><para><emphasis><filename>‐‐size</filename>:</emphasis>
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The minimum partition size in MBytes.
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Specify an integer value such as 500.
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Do not append the number with "MB".
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You do not need this option if you use
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<filename>--source</filename>.</para></listitem>
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<listitem><para><emphasis><filename>--source</filename>:</emphasis>
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<filename>‐‐source</filename>.</para></listitem>
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<listitem><para><emphasis><filename>‐‐source</filename>:</emphasis>
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This option is a
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<filename>wic</filename>-specific option that
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names the source of the data that populates
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@ -4462,7 +4517,7 @@
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"<link linkend='openembedded-kickstart-plugins'>Plugins</link>"
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section.</para>
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<para>If you use
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<filename>--source rootfs</filename>,
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<filename>‐‐source rootfs</filename>,
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<filename>wic</filename> creates a partition as
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large as needed and to fill it with the contents of
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the root filesystem pointed to by the
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@ -4472,14 +4527,14 @@
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option.
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The filesystem type used to create the
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partition is driven by the value of the
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<filename>--fstype</filename> option
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<filename>‐‐fstype</filename> option
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specified for the partition.
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See the entry on
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<filename>--fstype</filename> that
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<filename>‐‐fstype</filename> that
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follows for more information.
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</para>
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<para>If you use
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<filename>--source <replaceable>plugin-name</replaceable></filename>,
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<filename>‐‐source <replaceable>plugin-name</replaceable></filename>,
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<filename>wic</filename> creates a partition as
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large as needed and fills it with the contents of
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the partition that is generated by the
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@ -4492,10 +4547,10 @@
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filesystem type end up being are dependent
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on the given plugin implementation.
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</para></listitem>
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<listitem><para><emphasis><filename>--ondisk</filename> or <filename>--ondrive</filename>:</emphasis>
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<listitem><para><emphasis><filename>‐‐ondisk</filename> or <filename>‐‐ondrive</filename>:</emphasis>
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Forces the partition to be created on a particular
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disk.</para></listitem>
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<listitem><para><emphasis><filename>--fstype</filename>:</emphasis>
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<listitem><para><emphasis><filename>‐‐fstype</filename>:</emphasis>
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Sets the file system type for the partition.
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Valid values are:
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<itemizedlist>
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@ -4512,7 +4567,7 @@
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<listitem><para><filename>swap</filename>
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</para></listitem>
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</itemizedlist></para></listitem>
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<listitem><para><emphasis><filename>--fsoptions</filename>:</emphasis>
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<listitem><para><emphasis><filename>‐‐fsoptions</filename>:</emphasis>
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Specifies a free-form string of options to be
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used when mounting the filesystem.
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This string will be copied into the
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|
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@ -4522,15 +4577,15 @@
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If not specified, the default string
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is "defaults".
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</para></listitem>
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<listitem><para><emphasis><filename>--label label</filename>:</emphasis>
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<listitem><para><emphasis><filename>‐‐label label</filename>:</emphasis>
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Specifies the label to give to the filesystem to
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be made on the partition.
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If the given label is already in use by another
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filesystem, a new label is created for the
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partition.</para></listitem>
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<listitem><para><emphasis><filename>--active</filename>:</emphasis>
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<listitem><para><emphasis><filename>‐‐active</filename>:</emphasis>
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Marks the partition as active.</para></listitem>
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<listitem><para><emphasis><filename>--align (in KBytes)</filename>:</emphasis>
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<listitem><para><emphasis><filename>‐‐align (in KBytes)</filename>:</emphasis>
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This option is a <filename>wic</filename>-specific
|
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option that says to start a partition on an
|
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x KBytes boundary.</para></listitem>
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|
|
@ -4547,17 +4602,17 @@
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<note>
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Bootloader functionality and boot partitions are
|
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implemented by the various
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<filename>--source</filename>
|
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<filename>‐‐source</filename>
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plugins that implement bootloader functionality.
|
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The bootloader command essentially provides a means of
|
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modifying bootloader configuration.
|
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</note>
|
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<itemizedlist>
|
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<listitem><para><emphasis><filename>--timeout</filename>:</emphasis>
|
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<listitem><para><emphasis><filename>‐‐timeout</filename>:</emphasis>
|
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Specifies the number of seconds before the
|
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bootloader times out and boots the default option.
|
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</para></listitem>
|
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<listitem><para><emphasis><filename>--append</filename>:</emphasis>
|
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<listitem><para><emphasis><filename>‐‐append</filename>:</emphasis>
|
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Specifies kernel parameters.
|
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These parameters will be added to the syslinux
|
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<filename>APPEND</filename> or
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|
|
@ -5826,7 +5881,8 @@
|
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<para>The <filename>merge_config.sh</filename> script is
|
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part of the Linux Yocto kernel Git repositories
|
||||
(i.e. <filename>linux-yocto-3.14</filename>,
|
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<filename>linux-yocto-3.19</filename>, and so forth)
|
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<filename>linux-yocto-3.10</filename>,
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<filename>linux-yocto-3.8</filename>, and so forth)
|
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in the
|
||||
<filename>scripts/kconfig</filename> directory.</para>
|
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<para>For more information on configuration fragments,
|
||||
|
|
@ -6484,7 +6540,7 @@
|
|||
For this scenario, you need to start the PR Service using
|
||||
the <filename>bitbake-prserv</filename> command:
|
||||
<literallayout class='monospaced'>
|
||||
bitbake-prserv --host <replaceable>ip</replaceable> --port <replaceable>port</replaceable> --start
|
||||
bitbake-prserv ‐‐host <replaceable>ip</replaceable> ‐‐port <replaceable>port</replaceable> ‐‐start
|
||||
</literallayout>
|
||||
In addition to hand-starting the service, you need to
|
||||
update the <filename>local.conf</filename> file of each
|
||||
|
|
@ -7136,9 +7192,9 @@
|
|||
Given this example, issue the following commands on the
|
||||
target:
|
||||
<literallayout class='monospaced'>
|
||||
# smart channel --add all type=rpm-md baseurl=http://server.name/rpm/all
|
||||
# smart channel --add i585 type=rpm-md baseurl=http://server.name/rpm/i586
|
||||
# smart channel --add qemux86 type=rpm-md baseurl=http://server.name/rpm/qemux86
|
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# smart channel ‐‐add all type=rpm-md baseurl=http://server.name/rpm/all
|
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# smart channel ‐‐add i585 type=rpm-md baseurl=http://server.name/rpm/i586
|
||||
# smart channel ‐‐add qemux86 type=rpm-md baseurl=http://server.name/rpm/qemux86
|
||||
</literallayout>
|
||||
Also from the target machine, fetch the repository
|
||||
information using this command:
|
||||
|
|
@ -8588,13 +8644,13 @@
|
|||
Consequently, running the tests on other machine
|
||||
means that you have to move the contents and call
|
||||
<filename>runexported.py</filename> with
|
||||
"--deploy-dir <replaceable>path</replaceable>" as
|
||||
"‐‐deploy-dir <replaceable>path</replaceable>" as
|
||||
follows:
|
||||
<literallayout class='monospaced'>
|
||||
./runexported.py --deploy-dir /new/path/on/this/machine testdata.json
|
||||
./runexported.py ‐‐deploy-dir /new/path/on/this/machine testdata.json
|
||||
</literallayout>
|
||||
<filename>runexported.py</filename> accepts other arguments
|
||||
as well as described using <filename>--help</filename>.
|
||||
as well as described using <filename>‐‐help</filename>.
|
||||
</para>
|
||||
</section>
|
||||
|
||||
|
|
@ -9054,7 +9110,7 @@
|
|||
| DEBUG: SITE files ['endian-little', 'bit-32', 'ix86-common', 'common-linux', 'common-glibc', 'i586-linux', 'common']
|
||||
| DEBUG: Executing shell function do_compile
|
||||
| NOTE: make -j 16
|
||||
| make --no-print-directory all-am
|
||||
| make ‐‐no-print-directory all-am
|
||||
| /bin/mkdir -p include/near
|
||||
| /bin/mkdir -p include/near
|
||||
| /bin/mkdir -p include/near
|
||||
|
|
@ -9095,7 +9151,7 @@
|
|||
| ln -s /home/pokybuild/yocto-autobuilder/yocto-slave/nightly-x86/build/build/tmp/work/i586-poky-linux/neard/
|
||||
0.14-r0/neard-0.14/include/dbus.h include/near/dbus.h
|
||||
| ./src/genbuiltin nfctype1 nfctype2 nfctype3 nfctype4 p2p > src/builtin.h
|
||||
| i586-poky-linux-gcc -m32 -march=i586 --sysroot=/home/pokybuild/yocto-autobuilder/yocto-slave/nightly-x86/
|
||||
| i586-poky-linux-gcc -m32 -march=i586 ‐‐sysroot=/home/pokybuild/yocto-autobuilder/yocto-slave/nightly-x86/
|
||||
build/build/tmp/sysroots/qemux86 -DHAVE_CONFIG_H -I. -I./include -I./src -I./gdbus -I/home/pokybuild/
|
||||
yocto-autobuilder/yocto-slave/nightly-x86/build/build/tmp/sysroots/qemux86/usr/include/glib-2.0
|
||||
-I/home/pokybuild/yocto-autobuilder/yocto-slave/nightly-x86/build/build/tmp/sysroots/qemux86/usr/
|
||||
|
|
@ -9170,7 +9226,7 @@
|
|||
Here is some abbreviated, sample output with the
|
||||
missing dependency clearly visible at the end:
|
||||
<literallayout class='monospaced'>
|
||||
i586-poky-linux-gcc -m32 -march=i586 --sysroot=/home/scott-lenovo/......
|
||||
i586-poky-linux-gcc -m32 -march=i586 ‐‐sysroot=/home/scott-lenovo/......
|
||||
.
|
||||
.
|
||||
.
|
||||
|
|
@ -9565,14 +9621,14 @@
|
|||
|
||||
<para>
|
||||
<literallayout class='monospaced'>
|
||||
# opcontrol --reset
|
||||
# opcontrol --start --separate=lib --no-vmlinux -c 5
|
||||
# opcontrol ‐‐reset
|
||||
# opcontrol ‐‐start ‐‐separate=lib ‐‐no-vmlinux -c 5
|
||||
.
|
||||
.
|
||||
[do whatever is being profiled]
|
||||
.
|
||||
.
|
||||
# opcontrol --stop
|
||||
# opcontrol ‐‐stop
|
||||
$ opreport -cl
|
||||
</literallayout>
|
||||
</para>
|
||||
|
|
@ -9585,7 +9641,7 @@
|
|||
five levels deep.
|
||||
<note>
|
||||
To profile the kernel, you would specify the
|
||||
<filename>--vmlinux=/path/to/vmlinux</filename> option.
|
||||
<filename>‐‐vmlinux=/path/to/vmlinux</filename> option.
|
||||
The <filename>vmlinux</filename> file is usually in the source directory in the
|
||||
<filename>/boot/</filename> directory and must match the running kernel.
|
||||
</note>
|
||||
|
|
@ -9648,7 +9704,7 @@
|
|||
With this connection, you just need to run "oprofile-server" on the device.
|
||||
By default, OProfile listens on port 4224.
|
||||
<note>
|
||||
You can change the port using the <filename>--port</filename> command-line
|
||||
You can change the port using the <filename>‐‐port</filename> command-line
|
||||
option.
|
||||
</note>
|
||||
</para>
|
||||
|
|
@ -9738,14 +9794,14 @@
|
|||
If network access to the target is unavailable, you can generate
|
||||
an archive for processing in <filename>oprofile-viewer</filename> as follows:
|
||||
<literallayout class='monospaced'>
|
||||
# opcontrol --reset
|
||||
# opcontrol --start --separate=lib --no-vmlinux -c 5
|
||||
# opcontrol ‐‐reset
|
||||
# opcontrol ‐‐start ‐‐separate=lib ‐‐no-vmlinux -c 5
|
||||
.
|
||||
.
|
||||
[do whatever is being profiled]
|
||||
.
|
||||
.
|
||||
# opcontrol --stop
|
||||
# opcontrol ‐‐stop
|
||||
# oparchive -o my_archive
|
||||
</literallayout>
|
||||
</para>
|
||||
|
|
|
|||
Loading…
Reference in New Issue