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KLIBC is used as an internal makefile variable, it expands to either true or false right now. udev should use something else than KLIBC to allow build against the latest and greatest klibc version.
83 lines
2.9 KiB
Plaintext
83 lines
2.9 KiB
Plaintext
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udev - a userspace implementation of devfs
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For more information on the design, and structure of this project, see the
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files in the docs/ directory.
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To use:
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- You must be running a 2.6 version of the Linux kernel.
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- Make sure sysfs is mounted. udev will figure out where sysfs is mounted, but
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the traditional place for it is at /sys. You can mount it by hand by running:
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mount -t sysfs none /sys
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- Make sure you have the latest version of the linux-hotplug scripts. They are
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available at linux-hotplug.sf.net or from your local kernel.org mirror at:
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kernel.org/pub/linux/utils/kernel/hotplug/
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They are required in order for udev to work properly.
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If for some reason you do not install the hotplug scripts, you must tell the
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kernel to point the hotplug binary at wherever you install udev at. This can
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be done by:
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echo "/sbin/udev" > /proc/sys/kernel/hotplug
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- Build the project:
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make
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Note:
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There are a number of different flags that you can use when building
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udev. They are as follows:
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prefix - set this to the default root that you want udev to be
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installed into. This works just like the 'configure --prefix'
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script does. Default value is ''. Only override this if you
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really know what you are doing.
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USE_KLIBC - if set to 'true', udev is built and linked against the included
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version of klibc. Default value is 'false'.
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DEBUG - if set to 'true', debugging messages will be sent to the syslog
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as udev is run. Default value is 'false'.
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USE_DBUS - if set to 'true', DBUS messages will be sent everytime udev
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creates or removes a device node. This requires that DBUS
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development headers and libraries be present on your system to
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build properly. Default value is 'false'.
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So, if you want to build udev using klibc with debugging messages, you
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would do:
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make USE_KLIBC=true DEBUG=true
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- Install the project:
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make install
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This will put the udev binary in /sbin, create the /udev and /etc/udev
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directories, and place the udev configuration files in /etc/udev. You
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will probably want to edit the namedev.* files to create custom naming
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rules. More info on how the config files are set up are contained in
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comments in the files, and is located in the documentation.
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- Add and remove devices from the system and marvel as nodes are created
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and removed in /udev/ based on the device types.
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- If you later get sick of it, uninstall it:
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make uninstall
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Things are still quite rough, and it's a bit beyond proof of concept
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code. Help is very much appreciated, see the TODO file for a list of
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things left to be done.
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If you want to build using klibc, use the Makefile.klibc file:
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- read the klibc/klibc/README file for how to set up the linux
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symlink properly.
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- make clean
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- make -f Makefile.klibc
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and marvel at the tiny binary you just created :)
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Any comment/questions/concerns please let me know.
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greg k-h
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greg@kroah.com
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