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: http://www.sai.msu.su/~er/xntp/porting.html
Дата изменения: Unknown Дата индексирования: Sat Dec 22 01:48:10 2007 Кодировка: Поисковые слова: active galaxy |
Porting to a new machine or operating system ordinarily requires
updating the ./machines
directory and the
./compilers
directories in order to define the build
environment and autoconfigure means. You will probably have to modify
the ntp_machines.h
file and "l_stdlib.h"
files
as well. The two most famous trouble spots are the I/O code in
./xntpd/ntp_io.c
and the clock adjustment code in
./xntpd/ntp_unixclock.c
.
These are the rules so that older bsd systems and the POSIX standard system can coexist together.
select
then include
"ntp_select.h"
. select
is not standard, since
it is very system dependent as to where it is defined. The logic to
include the right system dependent include file is in
"ntp_select.h"
.
"ntp_string.h"
instead of <string.h>
.
"ntp_malloc.h"
if you use
malloc
.
"ntp_io.h"
instead of
<sys/file.h>
or <fnctl.h>
to get
O_*
flags.
"ntp_if.h"
instead of
<net/if.h>
.
"ntp_stdlib.h"
instead of
<stdlib.h>
.
SYS_
.
./include/ntp_machine.h
based on system identifier. This
file is included by the "ntp_types.h"
file and should
always be placed first after the <>
defines.
"l_stdlib.h"
file. This
file is included by the "ntp_stdlib.h"
file and should
ordinarily be placed last in the includes list.
"l_stdlib.h"
can contain any extra definitions that are
needed so that gcc
will shut up. They should be controlled
by a system identifier and there should be a separate section for each
system. Really this will make it easier to maintain.
See include/ntp_machines.h
for the various compile time
options.
When you are satisfied the port works and that other ports are not adversely affected, please send patches for the system files you have changed, as well as any documentation that should be updated, including the advice herein.
Good luck.