What is __BSD_VISIBLE for?

[Keith Bottner]

I have noticed that __BSD_VISIBLE is used through out the sys headers. What
is this used to distinguish between? Anyone? Where is it set? Or where
should it be set?

Keith

[Nikolas Britton]

Post by Keith Bottner
I have noticed that __BSD_VISIBLE is used through out the sys headers. What
is this used to distinguish between? Anyone? Where is it set? Or where
should it be set?
Keith

hu?

[Keith Bottner]

__BSD_VISIBLE is throughout the system header files that are located at
sys/sys, specifically I am looking at the msg.h file and the struct mymsg;
however, I have noticed this in quite a few other places and I was hoping
that someone out there would know what its use is?

Keith

-----Original Message-----
From: owner-freebsd-***@freebsd.org
[mailto:owner-freebsd-***@freebsd.org] On Behalf Of Nikolas Britton
Sent: Tuesday, January 18, 2005 12:45 PM
To: Keith Bottner
Cc: 'Freebsd-***@Freebsd. Org'
Subject: Re: What is __BSD_VISIBLE for?

Post by Keith Bottner
I have noticed that __BSD_VISIBLE is used through out the sys headers.
What is this used to distinguish between? Anyone? Where is it set? Or
where should it be set?
Keith

hu?
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[Steven Smith]

Post by Keith Bottner
__BSD_VISIBLE is throughout the system header files that are located at
sys/sys, specifically I am looking at the msg.h file and the struct mymsg;
however, I have noticed this in quite a few other places and I was hoping
that someone out there would know what its use is?

There are a few features which are traditional for BSD systems, but
whcih are incompatible with e.g. POSIX. These tend to be hidden
behind #ifdef __BSD_VISIBLE, so that programs only see them if they
want them.

__BSD_VISIBLE is #define's automatically by sys/cdefs.h, but you can
disable that with a special option to gcc (-traditional, I think).

Steven.

Post by Keith Bottner
Keith
-----Original Message-----
Sent: Tuesday, January 18, 2005 12:45 PM
To: Keith Bottner
Subject: Re: What is __BSD_VISIBLE for?

Post by Keith Bottner
I have noticed that __BSD_VISIBLE is used through out the sys headers.
What is this used to distinguish between? Anyone? Where is it set? Or
where should it be set?
Keith

hu?
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