+ Note:
+ There are a number of different flags that you can use when building
+ udev. They are as follows:
+ prefix
+ set this to the default root that you want udev to be
+ installed into. This works just like the 'configure --prefix'
+ script does. Default value is ''. Only override this if you
+ really know what you are doing.
+ USE_KLIBC
+ if set to 'true', udev is built and linked against the
+ included version of klibc. Default value is 'false'.
+ USE_LOG
+ if set to 'true', udev will emit messages to the syslog when
+ it creates or removes device nodes. This is helpful to see
+ what udev is doing. This is enabled by default. Note, if you
+ are building udev against klibc it is recommended that you
+ disable this option (due to klibc's syslog implementation.)
+ USE_SELINUX
+ if set to 'true', udev will be built with SELinux support
+ enabled. This is disabled by default.
+ DEBUG
+ if set to 'true', debugging messages will be sent to the syslog
+ as udev is run. Default value is 'false'.
+ KERNEL_DIR
+ If this is not set it will default to /lib/modules/`uname -r`/build
+ This is used if USE_KLIBC=true to find the kernel include
+ directory that klibc needs to build against. This must be set
+ if you are not building udev while running a 2.6 kernel.
+
+ So, if you want to build udev using klibc with debugging messages, you
+ would do:
+ make USE_KLIBC=true DEBUG=true
+