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Date: Mon, 15 Jan 2007 13:51:01 -0600
From: Dan Nelson <dnelson@allantgroup.com>
To: girish r <fmail_girish@yahoo.com>
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Cc: freebsd-hackers@freebsd.org
Subject: Re: semaphore.h does'nt include fcntl.h ?
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In the last episode (Jan 15), girish r said:
> > You'll need to include "options P1003_1B_SEMAPHORES" in your kernel
> > config, or load the "sem" kernel module.
> > --Dan Nelson
>
> I could'nt find "sem" so I tried sysvsem.ko but I get:
> 
> kldload: can't load sysvsem: File exists
> 
> Does it mean that sysvsem support is already present
> in the kernel? I am using fbsd 6.2.

sysv semaphores are different from POSIX semaphores, so loading
sysvsem.ko won't help you here.  It looks like the "sem" module is
missing from /usr/src/sys/modules/Makefile, which explains why you
don't have it :)  You can build it manually though:

 cd /usr/src/sys/modules/sem 
 make obj && make depend && make && make install
 kldload sem

-- 
	Dan Nelson
	dnelson@allantgroup.com