[Mingw-users] Help - where is the C language sleep() function?

[Charles S. <cws...@tr...>]

I'm a newbie to MinGW, looking to compile a free-standing version of my
FOSS Linux C language program for Windows XP users.

My program builds and runs correctly so long as I omit a sleep()
function (which is critical to other parts of the program).

Here's a test program:
---------------
/* sleeptest.c */
#include <unistd.h>
int main ( void )
{
  sleep(5);
  return 0;
}
---------------

Running:
  gcc -Wall sleeptest.c -o sleeptest
yields the error message:
sleeptest.c: In function `main':
sleeptest.c:5: warning: implicit declaration of function `sleep'
C:\DOCUME~1\winuser\LOCALS~1\Temp/cceccaaa.o<.text+0x32>:sleeptest.c undefined reference to `sleep'
collect2: ld returned 1 exit status 

I have downloaded and un-TAR'd the following MinGW binary packages into
directory c:\mingw
  gcc-core-3.4.2-20040916-1.tar.gz
  mingw-runtime-3.9.tar.gz
  mingw-utils-0.3.tar.gz
  w32api-3.6.tar.gz
  binutils-2.15.91-20040904-1.tar.gz

What else do I need to install to get the sleep() function?

Thanks for your help.

Regards,
Charles Sullivan