Add-On Packages; Chromium; Installation - GARZ&FRICKE GUF-Yocto-34.0-r5756-0-VINCELL User Manual

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5 Add-On Packages

Starting with Garz & Fricke Yocto Linux BSP Release 19 some packages are not integrated into the prebuilt OS-

images provided by Garz & Fricke but instead shipped separately as installable RPM-packages. This is done to

not burden the prebuilt OS-images with larger packets and to allow choices, which particular version of a package

to install on a speciﬁc device.

Such RPM packages can be transfered to the device using any protocol or storage-medium supported by the

system and afterwards installed using the following command:

$ rpm -i

Please note that RPM-packages, like the prebuilt OS-images, are provided for each Garz & Fricke system sep-

arately and can be installed on only the particular system they are intended for, e.g. an RPM-package provided

for VINCELL cannot be installed on a SANTARO or vice versa.

Deinstallation of RPM-packages can be performed likewise:

$ rpm -e

For deinstallation you can usually provide abbreviated package names instead of ﬁlenames or package names

including full version numbers.

The following sections assume that RPM-packages are stored on your TFTP-server and will be uploaded to the

device using TFTP. You may use other protocols or storage-media to transfer the RPM-packages to your device,

of course.

5.1 Chromium

Starting with Yocto Release 19 Garz & Fricke provides the open-source Chromium browser as installable RPM-

package.

This package is intended to be used for HTML-based applications starting automatically during system boot,

which won't display the regular browser GUI, i.e. URL-bar, navigation buttons, etc.

5.1.1 Installation

The prebuilt Yocto OS-images provided by Garz & Fricke usually start a small QT-based demo-application au-

tomatically on system boot. As the Chromium package will install the browser to start automatically on system

boot, as well, our default demo application must be disabled ﬁrst:

$ update-rc.d -f qt4-guf-demo remove

Note: This will only remove the symlinks responsible for starting the qt4-guf-demo during system boot. The

application itself still remains on the device and may still be started from the command-line.

Now the Chromium package may be uploaded and installed on the device. The following example assumes that

you use a TFTP-Server on your Host-PC and have copied the RPM-package to its TFTP-Root folder, already. Of

course you may use FTP, SFTP, USB-Sticks, SD-Cards or other protocols or storage-media instead. You must

change the IP-address in the following example to the IP-address of your Host-PC and may have to change the

name of the RPM-package you want to install (Garz & Fricke will eventually supply different Chromium versions

for each platform).

$ export TFTP=172.20.9.107

$ curl tftp://$TFTP/GUF-Yocto-34.0-r5756-0-VINCELL-chromium-42.0.2311.90-r0.rpm >/tmp

/chromium.rpm

$ rpm -i /tmp/chromium.rpm

$ sync

This may take a moment and shortly afterwards Chromium should already start automatically. After installation

Chromium will always start automatically on each system boot.

GUF-Yocto-34.0-r5756-0

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