#### Beyond Linux® From Scratch (systemd Edition) - Version 10.1

### Chapter 12. System Utilities

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# GPM-1.20.7

## Introduction to GPM

The GPM (General Purpose Mouse daemon) package contains a mouse server for the console and xterm. It not only provides cut and paste support generally, but its library component is used by various software such as Links to provide mouse support to the application. It is useful on desktops, especially if following (Beyond) Linux From Scratch instructions; it's often much easier (and less error prone) to cut and paste between two console windows than to type everything by hand!

This package is known to build and work properly using an LFS-10.1 platform.

### Package Information

- Download (HTTP): http://anduin.linuxfromscratch.org/BLFS/gpm/gpm-1.20.7.tar.bz2

- Download (FTP): ftp://anduin.linuxfromscratch.org/BLFS/gpm/gpm-1.20.7.tar.bz2

- Download MD5 sum: bf84143905a6a903dbd4d4b911a2a2b8

- Download size: 820 KB

- Estimated disk space required: 7.4 MB

- Estimated build time: 0.1 SBU

### Additional Downloads

- Required patch: http://www.linuxfromscratch.org/patches/blfs/10.1/gpm-1.20.7-consolidated-1.patch

User Notes: http://wiki.linuxfromscratch.org/blfs/wiki/GPM

## Kernel Configuration

Enable the following option in the kernel configuration and recompile the kernel if necessary:

    Device Drivers  --->
      Input device support ---> [CONFIG_INPUT]
        <*/M> Mouse interface   [CONFIG_INPUT_MOUSEDEV]

## Installation of GPM

Install GPM by running the following commands:

    patch -Np1 -i ../gpm-1.20.7-consolidated-1.patch &&
    ./autogen.sh                                     &&
    ./configure --prefix=/usr --sysconfdir=/etc      &&
    make

This package does not come with a test suite.

Now, as the `root` user:

    make install                                          &&

    install-info --dir-file=/usr/share/info/dir           \
                 /usr/share/info/gpm.info                 &&

    ln -sfv libgpm.so.2.1.0 /usr/lib/libgpm.so            &&
    install -v -m644 conf/gpm-root.conf /etc              &&

    install -v -m755 -d /usr/share/doc/gpm-1.20.7/support &&
    install -v -m644    doc/support/*                     \
                        /usr/share/doc/gpm-1.20.7/support &&
    install -v -m644    doc/{FAQ,HACK_GPM,README*}        \
                        /usr/share/doc/gpm-1.20.7

## Command Explanations

./autogen.sh: This command creates the missing configure script.

install-info ...: This package installs a `.info` file, but does not update the system `dir` file. This command makes the update.

ln -v -sfn libgpm.so.2.1.0 /usr/lib/libgpm.so: This command is used to create (or update) the `.so` symlink to the library.

## Configuring GPM

###

#### Systemd Unit

To start the gpm daemon at boot, install the systemd unit from the blfs-systemd-units-20210122 package by running the following command as the `root` user:

    make install-gpm

###

#### Config Files

`/etc/gpm-root.conf` and `~/.gpm-root`: The default and individual user gpm-root configuration files.

###

#### Configuration Information

GPM is by default started with the following parameters: `-m /dev/input/mice -t imps2`. If the mentioned parameters don't suit your needs, you can override them by running the following commands as the `root` user:

    install -v -dm755 /etc/systemd/system/gpm.service.d &&
    cat > /etc/systemd/system/gpm.service.d/99-user.conf << EOF
    [Service]
    ExecStart=/usr/sbin/gpm <list of parameters>
    EOF

## Contents

Installed Programs: disable-paste, display-buttons, display-coords, get-versions, gpm, gpm-root, hltest, mev, and mouse-test
Installed Library: libgpm.{so.a}
Installed Directory: /usr/share/doc/gpm-1.20.7

### Short Descriptions

disable-paste | is a security mechanism used to disable the paste buffer
display-buttons | is a simple program that reports the mouse buttons being pressed and released
display-coords | is a simple program that reports the mouse coordinates
get-versions | is used to report the GPM library and server versions
gpm | is a cut and paste utility and mouse server for virtual consoles
gpm-root | is a default handler for gpm. It is used to draw menus on the root window
hltest | is a simple sample application using the high-level library, meant to be read by programmers trying to use the high-level library
mev | is a program to report mouse events
mouse-test | is a tool for determining the mouse type and device it's attached to
`libgpm.{so.a}` | contains the API functions to access the GPM daemon

Last updated on 2021-02-20 11:35:58 -0800

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