From mboxrd@z Thu Jan  1 00:00:00 1970
To: 9fans@cse.psu.edu
Subject: Re: [9fans] /ape/sys/time.h
From: anothy@cosym.net
MIME-Version: 1.0
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: 8bit
Message-Id: <20010919152346.456A319A4E@mail.cse.psu.edu>
Date: Wed, 19 Sep 2001 11:23:34 -0400
Topicbox-Message-UUID: edda092a-eac9-11e9-9e20-41e7f4b1d025

to expand on rog's response:
there are a number of header files which arn't defined in pure
ANSI or POSIX which many vendors include in "ANSI/POSIX"
environments anyway. Plan 9's APE takes a stricter approach;
if you say you're using ANSI/POSIX, that's what you get. if you
want more, you need to #define for those headers. APE
ensures you get this right by including lines that're not valid
C code, so the compiler fails, making sure you'll notice your
mistake. the common fix is to add the defines to your
command line or ma?ke?file.

check out the APE paper (/sys/doc/ape.ps), page 3, for a list
of what defines are understood to allow extra stuff. as rog
noted, _BSD_EXTENSION is the most common.
-α.