From mboxrd@z Thu Jan  1 00:00:00 1970
Received: by archone.tamu.edu id <45338>; Thu, 13 Feb 1992 23:20:05 -0600
From: Byron Rakitzis <byron>
To: rc
Subject: configuration parameters
Message-Id: <92Feb13.232005cst.45338@archone.tamu.edu>
Date: Thu, 13 Feb 1992 23:19:54 -0600

rc's configuration has become unweildy. I want to try something cleaner
than that ugly makefile. Is the solution shown below satisfactory?

(the file that follows replaces the current config.h:)

/*
 * Configuration parameters for rc. Suggested defaults are at the bottom
 * of this file (you should probably look at those first to see if your
 * system matches one of them; you can search for the beginning of the
 * defaults section by looking for the string "#ifndef CUSTOM"). If you
 * want to override the suggested defaults, define the macro CUSTOM.
#define CUSTOM
 */

/*
 * (Note that certain default settings redefine this macro)
 * DEFAULTPATH the default search path that rc uses when it is started
 * without either a PATH or path environment variable. You must pick
 * something sensible for your system if you don't like the path shown
 * below.
 */
#define DEFAULTPATH "/usr/ucb", "/usr/bin", "/bin", "."

/*
 * Define the macro NODIRENT if your system has <sys/dir.h> but not
 * <dirent.h>. (e.g., NeXT-OS and RISCos)
#define NODIRENT
 */

/*
 * Define the macro SVSIGS if your system has System V signal semantics,
 * i.e., if "slow" system calls are interrupted rather than resumed
 * after returning from an interrupt handler. (If you are not sure what
 * this means, see the man page for signal(2). In any case, it is probably
 * safe to leave this macro undefined.)
#define SVSIGS
 */

/*
 * Define the macro NOCMDARG if you do not have /dev/fd or fifos on your
 * system. You may also want to define this if you have broken fifos.
 * For example, if you have a Sun with /tmp mounted as a ramdisk
 * (type "tmpfs") then you cannot use fifos in /tmp (sigh).
#define NOCMDARG
 */

/*
 * Define the macro DEVFD if your system supports /dev/fd.
#define DEVFD
 */

/*
 * Define the macro NOLIMITS if your system does not support Berkeley
 * limits.
#define NOLIMITS
 */

/*
 * Define the macro NOSIGCLD if your system uses SIGCLD in the System
 * V way. (e.g., sgi's Irix)
#define NOSIGCLD
 */

/*
 * Define the macro READLINE if you want rc to call GNU readline
 * instead of read(2) on interactive shells.
#define READLINE
 */

/*
 * Define the macro EDITLINE if you want rc to call Simmule Turner's
 * readline-like library. (it's about 1/10 the size of GNU, but with
 * fewer options) Also uncomment the EDITLIB variable in the Makefile.
#define EDITLINE
 */

/*
 * Define the macro NOEXECVE if your Unix does not interpret #! in the
 * kernel, and uncomment the EXECVE variable in the Makefile.
#define NOEXECVE
 */

/*
 * If you want rc to default to some interpreter for files which don't
 * have a legal #! on the first line, define the macro DEFAULTINTERP.
#define DEFAULTINTERP "/bin/sh"
 */

/*
 * If your /bin/sh (or another program you care about) rejects
 * environment variables with special characters in them, rc can put
 * out ugly variable names using [_0-9a-zA-Z] that encode the real
 * name; define PROTECT_ENV for this hack. (Known offenders: every
 * sh I have tried; SunOS (silently discards), NeXT (aborts with
 * error), SGI (aborts with error), Ultrix (sh seems to work, sh5
 * aborts with error))
#define PROTECT_ENV
 */

/* Beginning of defaults section: */

#ifndef CUSTOM

/*
 * Suggested settings for Sun, NeXT and sgi (machines here at TAMU):
 */

#ifdef NeXT
#define NODIRENT
#define	PROTECT_ENV
#define NOCMDARG
#endif

#ifdef sgi
#define SVSIGS
#define NOSIGCLD
#define	PROTECT_ENV
#undef DEFAULTPATH
#define DEFAULTPATH "/usr/bsd", "/usr/sbin", "/usr/bin", "/bin", "."
#endif

#ifdef sun
#define PROTECT_ENV
#undef DEFAULTPATH
#define DEFAULTPATH "/usr/ucb", "/usr/bin", "."
#endif

/*
 * Suggested settings for HP300 running 4.3BSD-utah (DWS):
 */

#if defined(hp300) && !defined(hpux)
#define NODIRENT
#define NOCMDARG
#define DEFAULTINTERP "/bin/sh"
#define PROTECT_ENV
#endif

/*
 * Suggested settings for Ultrix
 */

#ifdef ultrix
#define PROTECT_ENV
#define DEFAULTINTERP "/bin/sh"	/* so /bin/true can work */
#endif

/*
 * Suggested settings for RiscOS 4.52
 */

#ifdef host_mips
#define NODIRENT
#define PROTECT_ENV
extern int errno; /* not defined in the mips <errno.h> !?!?! */
#endif

#endif /* CUSTOM */