If set to 'true', very verbose debugging messages will be compiled
into the udev binaries. The actual level of debugging is specified
in the udev config file.
- STRIPCMD
- If udev is compiled for packaging an empty string can be passed
- to disable the stripping of the binaries.
USE_SELINUX
If set to 'true', udev will be built with SELinux support
enabled. This is disabled by default.