Subject: Re: unix define
To: Greg A. Woods <>
From: Erik E. Fair <>
List: current-users
Date: 06/16/1998 00:50:59
Larry Wall discovered long ago to do his #ifdef's on *features* rather than
systems. Features can be tested for by a configuration script. Operating
System feature sets change over time, and no two versions of "unix" have
exactly the same feature set.

Depending on "unix" is foolhardy for any programmer who wants to write
portable code.

	Erik <>