README file for directory ./kernel/sys of the NTP Version 3 distribution This directory contains system header files used by the clock discipline and STREAMS modules in the .. (./kernel) directory. If the precision-time kernel (KERNEL_PLL define) is configured, the installation process requires the header file /usr/include/sys/timex.h for the particular architecture to be in place. The file timex.h included in this distribution is for Suns; the files for other systems can be found in the kernel distributions available from the manufacturer's representatives.