[Info-vax] ANSI89 C and Sleep function

[GerMarsh]

Hello VMSers

I have to use the /STANDARD=ANSI89 qualifier to compile a C program
with the sleep() funtion in it.

I have found the function def in a header file:  #include <unistd.h>
but the link fails with:
%LINK-W-NUDFSYMS, 1 undefined symbol:
%LINK-I-UDFSYM,         SLEEP
%LINK-W-USEUNDEF, undefined symbol SLEEP referenced
        in psect $LINK$ offset %X00000180

If I remove the /STANDARD qualifier, I don't need the header file and
the link is ok. Anyone know where the object code for that sleep
function lives so I can include it in the link?

I've looked in both user and ref manuals but cannot glean anything
from them.

Signed,

Confused of Cymru (Wales!)