mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-24 11:29:10 +00:00
38 lines
1.7 KiB
Plaintext
38 lines
1.7 KiB
Plaintext
These are the rules so that older bsd systems and the POSIX standard
|
|
system can coexist togather.
|
|
|
|
1) If you use select then include "ntp_select.h"
|
|
select is not standard, since it is very system depenedent as to where
|
|
select is defined. The logic to include the right system dependent
|
|
include file is in "ntp_select.h".
|
|
2) Always use POSIX defintion of strings. Inlcude "ntp_string.h" instaed
|
|
of <string.h>.
|
|
3) Always include "ntp_malloc.h" if you use malloc.
|
|
4) Always include "ntp_io.h" instead of <sys/file.h> or <fnctl.h> to
|
|
get O_* flags.
|
|
5) Always include "ntp_if.h" instead of <net/if.h>.
|
|
6) Always include "ntp_stdlib.h" instead of <stdlib.h>.
|
|
7) Always define a system identifier for any new system added to the
|
|
machines directory. The identifier should always start with SYS_!
|
|
8) Define any special defines needed for a system in
|
|
./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.
|
|
9) Define any special library prototypes left over from the system
|
|
library and include files in the "l_stdlib.h" file. This file is
|
|
included by the "ntp_stdlib.h" file and should ordinarily be
|
|
placed last in the includes list.
|
|
10) Don't define a include file by the same name as a system include file.
|
|
|
|
|
|
"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 seperate section for each system. Really this will
|
|
make it easier to maintain.
|
|
|
|
See include/ntp_machines.h for the verious compile time options.
|
|
|
|
Good luck.
|
|
|
|
Bill Jones, with amendments by Dave Mills
|