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shell.h revision 1.5 
      1 /*-
      2  * Copyright (c) 1991, 1993
      3  *	The Regents of the University of California.  All rights reserved.
      4  *
      5  * This code is derived from software contributed to Berkeley by
      6  * Kenneth Almquist.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. All advertising materials mentioning features or use of this software
     17  *    must display the following acknowledgement:
     18  *	This product includes software developed by the University of
     19  *	California, Berkeley and its contributors.
     20  * 4. Neither the name of the University nor the names of its contributors
     21  *    may be used to endorse or promote products derived from this software
     22  *    without specific prior written permission.
     23  *
     24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     34  * SUCH DAMAGE.
     35  *
     36  *	@(#)shell.h	8.1 (Berkeley) 5/31/93
     37  */
     38 
     39 /*
     40  * The follow should be set to reflect the type of system you have:
     41  *	JOBS -> 1 if you have Berkeley job control, 0 otherwise.
     42  *	SYMLINKS -> 1 if your system includes symbolic links, 0 otherwise.
     43  *	SHORTNAMES -> 1 if your linker cannot handle long names.
     44  *	define BSD if you are running 4.2 BSD or later.
     45  *	define SYSV if you are running under System V.
     46  *	define DEBUG=1 to compile in debugging (set global "debug" to turn on)
     47  *	define DEBUG=2 to compile in and turn on debugging.
     48  *
     49  * When debugging is on, debugging info will be written to $HOME/trace and
     50  * a quit signal will generate a core dump.
     51  */
     52 
     53 
     54 #define JOBS 1
     55 #define SYMLINKS 1
     56 #ifndef BSD
     57 #define BSD 1
     58 #endif
     59 #define DEBUG 1
     60 
     61 #ifdef __STDC__
     62 typedef void *pointer;
     63 #ifndef NULL
     64 #define NULL (void *)0
     65 #endif
     66 #else /* not __STDC__ */
     67 typedef char *pointer;
     68 #ifndef NULL
     69 #define NULL 0
     70 #endif
     71 #endif /*  not __STDC__ */
     72 #define STATIC	/* empty */
     73 #define MKINIT	/* empty */
     74 
     75 #include <sys/cdefs.h>
     76 
     77 extern char nullstr[1];		/* null string */
     78 
     79 
     80 #ifdef DEBUG
     81 #define TRACE(param)	trace param
     82 #else
     83 #define TRACE(param)
     84 #endif
     85