From owner-freebsd-ports@FreeBSD.ORG  Fri Feb 24 19:15:34 2012
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From: Chuck Swiger <cswiger@mac.com>
In-reply-to: <CAKgQ7UJDxDPh-LwBT+d9_wXUWgLFo+csi=X3KMJde125e9REcg@mail.gmail.com>
Date: Fri, 24 Feb 2012 11:15:32 -0800
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References: <CAKgQ7UJDxDPh-LwBT+d9_wXUWgLFo+csi=X3KMJde125e9REcg@mail.gmail.com>
To: Norman Khine <norman@khine.net>
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Cc: freebsd-ports@freebsd.org
Subject: Re: dl library and fdatasync(2)
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On Feb 24, 2012, at 10:40 AM, Norman Khine wrote:
> i am trying to build nodejs on freebsd9, and get a warning:
> 
> Checking for library dl                  : not found
> 
> Checking for fdatasync(2) with c++       : no
> 
> could someone point me where these libraries are?

FreeBSD's libc provides dlopen(), dlclose(), etc-- there's no need for a separate libdl to do dynamic loading.

fdatasync(2) is a cheaper version of fsync(2) which does not try to update filesystem metadata; using soft updates with FreeBSD's  UFS2 filesystem already provides most of the benefits.  So you don't need that either, just call fsync() instead.

Regards,
-- 
-Chuck