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Arcom Embedded Linux Technical Manual Developing software for AEL

Installing additional packages into the host environment

When the host environment is installed, all of the library runtime and development

packages that are supplied on the Development Kit CD are installed into it. If you obtain

a library package from some other source, such as Arcom Technical Support, you must

install the runtime and development packages yourself.

This section explains installing packages in the host environment, whilst Package

management

, on page 29, explains installing packages in the target device. The

installation into both the host and target environments of applications and binaries that

you have built yourself (i.e. not using packages) is explained later in this section.

Many of the packages you want to install in the host environment are in the form of .deb

packages, suitable for installation on the target device. These must be converted into

LSB-compliant .rpm packages suitable for installation in the host environment. A small

minority of packages (for example cross compilers) are strictly intended for the host

environment only, and so are supplied directly as LSB .rpm packages.

The host environment contains a tool, ael-cross-rpm, that is used to convert a .deb

package into an LSB-compliant .rpm package. A .deb package ‘foo’ is converted by the

tool into an RPM package ‘lsb-arcom-ARCH-linux-foo’, with the correct metadata for an

LSB package and the correct file system layout for the Arcom host environment.

A .deb package or set of .deb packages can be converted to LSB compliant .rpm

packages by passing them to ael-cross-rpm. To do this, enter:

$ ael-cross-rpm libc6_2.3.1-3_arm.deb libc6-dev_2.3.1-3_arm.deb

When you enter this command, the following is displayed:

libc6_2.3.1−3_arm.deb

libc6−dev_2.3.1−3_arm.deb

You can see the newly created LSB .rpm packages in the current folder by entering:

$ ls *.rpm

When you enter this command, the following is displayed:

lsb−arcom−arm−linux−libc6−2.3.1−3.noarch.rpm

lsb−arcom−arm−linux−libc6−dev−2.3.1−3.noarch.rpm.

If ael-cross-rpm determines that a .deb package contains no files that would be useful

in the host environment, it does not produce any output for that package.

Once you have created the LSB .rpm packages, you must install them on your host

system. The method for doing this varies between Linux distributions.

On a distribution that uses the RPM package manager, for example Red Hat Linux, you

can install the LSB .rpm packages directly using the rpm tool:

# rpm -ivh lsb-arcom-arm-linux-libc6-2.3.1-3.noarch.rpm

When you enter this command, the following is displayed:

Preparing... ################################ [100%]

1:lsb−arcom−arm−linux−lib ################################# [100%]

1 2 ... 30 31 32 33 34 35 36 37 38 39 40 ... 71 72

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Eurotech ZEUS Bedienungsanleitung Seite 35