New Plan9 port

1 files changed, 1573 insertions, 0 deletions

diff --git a/plan9/config.plan9 b/plan9/config.plan9
new file mode 100644
index 0000000000..d59a75933b
--- /dev/null
+++ b/plan9/config.plan9
@@ -0,0 +1,1573 @@
+/* This file (config_H) is a sample config.h file.  If you are unable
+   to successfully run Configure, copy this file to config.h and
+   edit it to suit your system.
+*/
+/*
+ * This file was produced by running the config_h.SH script, which
+ * gets its values from config.sh, which is generally produced by
+ * running Configure.
+ *
+ * Feel free to modify any of this as the need arises.  Note, however,
+ * that running config_h.SH again will wipe out any changes you've made.
+ * For a more permanent change edit config.sh and rerun config_h.SH.
+ *
+ * $Id: Config_h.U,v 3.0.1.4 1995/09/25 09:10:49 ram Exp $
+ */
+
+/* Configuration time: Thu Feb  8 17:15:11 EST 1996
+ * Configured by: doughera
+ * Target system: sunos fractal 5.4 generic_101946-29 i86pc i386 
+ */
+
+#ifndef _config_h_
+#define _config_h_
+
+/* CAT2:
+ *	This macro catenates 2 tokens together.
+ */
+
+#define CAT2(a,b)a ## b
+#define CAT3(a,b,c)a ## b ## c
+#define CAT4(a,b,c,d)a ## b ## c ## d
+#define CAT5(a,b,c,d,e)a ## b ## c ## d ## e
+#define StGiFy(a)# a
+#define STRINGIFY(a)StGiFy(a)
+#define SCAT2(a,b)StGiFy(a) StGiFy(b)
+#define SCAT3(a,b,c)StGiFy(a) StGiFy(b) StGiFy(c)
+#define SCAT4(a,b,c,d)StGiFy(a) StGiFy(b) StGiFy(c) StGiFy(d)
+#define SCAT5(a,b,c,d,e)StGiFy(a) StGiFy(b) StGiFy(c) StGiFy(d) StGiFy(e)
+
+/* config-start */
+
+/* MEM_ALIGNBYTES:
+ *	This symbol contains the number of bytes required to align a
+ *	double. Usual values are 2, 4 and 8.
+ */
+#define MEM_ALIGNBYTES 8	/* config-skip */
+
+/* BIN:
+ *	This symbol holds the path of the bin directory where the package will
+ *	be installed. Program must be prepared to deal with ~name substitution.
+ */
+#define BIN "/_P9P_OBJTYPE/bin"	/*  */
+
+/* CPPSTDIN:
+ *	This symbol contains the first part of the string which will invoke
+ *	the C preprocessor on the standard input and produce to standard
+ *	output.	 Typical value of "cc -E" or "/lib/cpp", but it can also
+ *	call a wrapper. See CPPRUN.
+ */
+/* CPPMINUS:
+ *	This symbol contains the second part of the string which will invoke
+ *	the C preprocessor on the standard input and produce to standard
+ *	output.  This symbol will have the value "-" if CPPSTDIN needs a minus
+ *	to specify standard input, otherwise the value is "".
+ */
+#define CPPSTDIN "cpp"
+#define CPPMINUS ""
+
+/* HAS_ALARM:
+ *	This symbol, if defined, indicates that the alarm routine is
+ *	available.
+ */
+#define HAS_ALARM		/**/
+
+/* HASATTRIBUTE:
+ *	This symbol indicates the C compiler can check for function attributes,
+ *	such as printf formats. This is normally only supported by GNU cc.
+ */
+#undef HASATTRIBUTE 	/* config-skip*/
+#ifndef HASATTRIBUTE
+#define __attribute__(_arg_)
+#endif
+
+/* HAS_BCMP:
+ *	This symbol is defined if the bcmp() routine is available to
+ *	compare blocks of memory.
+ */
+#define HAS_BCMP	/**/
+
+/* HAS_BCOPY:
+ *	This symbol is defined if the bcopy() routine is available to
+ *	copy blocks of memory.
+ */
+#define HAS_BCOPY	/**/
+
+/* HAS_BZERO:
+ *	This symbol is defined if the bzero() routine is available to
+ *	set a memory block to 0.
+ */
+#define HAS_BZERO	/**/
+
+/* CASTI32:
+ *	This symbol is defined if the C compiler can cast negative
+ *	or large floating point numbers to 32-bit ints.
+ */
+#undef	CASTI32		/**/
+
+/* CASTNEGFLOAT:
+ *	This symbol is defined if the C compiler can cast negative
+ *	numbers to unsigned longs, ints and shorts.
+ */
+/* CASTFLAGS:
+ *	This symbol contains flags that say what difficulties the compiler
+ *	has casting odd floating values to unsigned long:
+ *		0 = ok
+ *		1 = couldn't cast < 0
+ *		2 = couldn't cast >= 0x80000000
+ *		4 = couldn't cast in argument expression list
+ */
+#define	CASTNEGFLOAT		/**/
+#if _P9P_OBJTYPE == 386
+#  define CASTFLAGS 2		/**/ /* config-skip */
+#else
+#  define CASTFLAGS 0		/**/ /* config-skip */
+#endif
+
+/* HAS_CHOWN:
+ *	This symbol, if defined, indicates that the chown routine is
+ *	available.
+ */
+#undef HAS_CHOWN		/**/
+
+/* HAS_CHROOT:
+ *	This symbol, if defined, indicates that the chroot routine is
+ *	available.
+ */
+#undef HAS_CHROOT		/**/
+
+/* HAS_CHSIZE:
+ *	This symbol, if defined, indicates that the chsize routine is available
+ *	to truncate files.  You might need a -lx to get this routine.
+ */
+#undef HAS_CHSIZE		/**/
+
+/* VOID_CLOSEDIR:
+ *	This symbol, if defined, indicates that the closedir() routine
+ *	does not return a value.
+ */
+#define VOID_CLOSEDIR		/**/
+
+/* HASCONST:
+ *	This symbol, if defined, indicates that this C compiler knows about
+ *	the const type. There is no need to actually test for that symbol
+ *	within your programs. The mere use of the "const" keyword will
+ *	trigger the necessary tests.
+ */
+#define HASCONST	/**/
+
+/* HAS_CRYPT:
+ *	This symbol, if defined, indicates that the crypt routine is available
+ *	to encrypt passwords and the like.
+ */
+/* #define HAS_CRYPT		/**/
+
+/* HAS_CUSERID:
+ *	This symbol, if defined, indicates that the cuserid routine is
+ *	available to get character login names.
+ */
+#define HAS_CUSERID		/**/
+
+/* HAS_DBL_DIG:
+ *	This symbol, if defined, indicates that this system's <float.h>
+ *	or <limits.h> defines the symbol DBL_DIG, which is the number
+ *	of significant digits in a double precision number.  If this
+ *	symbol is not defined, a guess of 15 is usually pretty good.
+ */
+#undef HAS_DBL_DIG 	/* */
+
+/* HAS_DIFFTIME:
+ *	This symbol, if defined, indicates that the difftime routine is
+ *	available.
+ */
+#define HAS_DIFFTIME		/**/
+
+/* HAS_DLERROR:
+ *	This symbol, if defined, indicates that the dlerror routine is
+ *	available to return a string describing the last error that
+ *	occurred from a call to dlopen(), dlclose() or dlsym().
+ */
+#undef HAS_DLERROR	/**/
+
+/* HAS_DUP2:
+ *	This symbol, if defined, indicates that the dup2 routine is
+ *	available to duplicate file descriptors.
+ */
+#define HAS_DUP2	/**/
+
+/* HAS_FCHMOD:
+ *	This symbol, if defined, indicates that the fchmod routine is available
+ *	to change mode of opened files.  If unavailable, use chmod().
+ */
+#undef HAS_FCHMOD		/**/
+
+/* HAS_FCHOWN:
+ *	This symbol, if defined, indicates that the fchown routine is available
+ *	to change ownership of opened files.  If unavailable, use chown().
+ */
+#undef HAS_FCHOWN		/**/
+
+/* HAS_FCNTL:
+ *	This symbol, if defined, indicates to the C program that
+ *	the fcntl() function exists.
+ */
+#define HAS_FCNTL		/**/
+
+/* HAS_FGETPOS:
+ *	This symbol, if defined, indicates that the fgetpos routine is
+ *	available to get the file position indicator, similar to ftell().
+ */
+#define HAS_FGETPOS	/**/
+
+/* FLEXFILENAMES:
+ *	This symbol, if defined, indicates that the system supports filenames
+ *	longer than 14 characters.
+ */
+#define	FLEXFILENAMES		/**/
+
+/* HAS_FLOCK:
+ *	This symbol, if defined, indicates that the flock routine is
+ *	available to do file locking.
+ */
+#undef HAS_FLOCK		/**/
+
+/* HAS_FORK:
+ *	This symbol, if defined, indicates that the fork routine is
+ *	available.
+ */
+#define HAS_FORK		/**/
+
+/* HAS_FSETPOS:
+ *	This symbol, if defined, indicates that the fsetpos routine is
+ *	available to set the file position indicator, similar to fseek().
+ */
+#define HAS_FSETPOS	/**/
+
+/* HAS_GETGROUPS:
+ *	This symbol, if defined, indicates that the getgroups() routine is
+ *	available to get the list of process groups.  If unavailable, multiple
+ *	groups are probably not supported.
+ */
+#undef HAS_GETGROUPS		/* config-skip */
+
+/* HAS_GETHOSTENT:
+ *	This symbol, if defined, indicates that the gethostent routine is
+ *	available to lookup host names in some data base or other.
+ */
+#undef HAS_GETHOSTENT		/* config-skip */
+
+/* HAS_UNAME:
+ *	This symbol, if defined, indicates that the C program may use the
+ *	uname() routine to derive the host name.  See also HAS_GETHOSTNAME
+ *	and PHOSTNAME.
+ */
+#undef HAS_UNAME		/**/
+
+/* HAS_GETLOGIN:
+ *	This symbol, if defined, indicates that the getlogin routine is
+ *	available to get the login name.
+ */
+#define HAS_GETLOGIN		/**/
+
+/* HAS_GETPGRP:
+ *	This symbol, if defined, indicates that the getpgrp routine is
+ *	available to get the current process group.
+ */
+#define HAS_GETPGRP		/**/
+
+/* HAS_GETPGRP2:
+ *	This symbol, if defined, indicates that the getpgrp2() (as in DG/UX)
+ *	routine is available to get the current process group.
+ */
+#undef HAS_GETPGRP2		/**/
+
+/* HAS_GETPPID:
+ *	This symbol, if defined, indicates that the getppid routine is
+ *	available to get the parent process ID.
+ */
+#define HAS_GETPPID		/**/
+
+/* HAS_GETPRIORITY:
+ *	This symbol, if defined, indicates that the getpriority routine is
+ *	available to get a process's priority.
+ */
+#undef HAS_GETPRIORITY		/**/
+
+/* HAS_HTONL:
+ *	This symbol, if defined, indicates that the htonl() routine (and
+ *	friends htons() ntohl() ntohs()) are available to do network
+ *	order byte swapping.
+ */
+/* HAS_HTONS:
+ *	This symbol, if defined, indicates that the htons() routine (and
+ *	friends htonl() ntohl() ntohs()) are available to do network
+ *	order byte swapping.
+ */
+/* HAS_NTOHL:
+ *	This symbol, if defined, indicates that the ntohl() routine (and
+ *	friends htonl() htons() ntohs()) are available to do network
+ *	order byte swapping.
+ */
+/* HAS_NTOHS:
+ *	This symbol, if defined, indicates that the ntohs() routine (and
+ *	friends htonl() htons() ntohl()) are available to do network
+ *	order byte swapping.
+ */
+#define HAS_HTONL		/**/
+
+#define HAS_HTONS		/**/
+
+#define HAS_NTOHL		/**/
+
+#define HAS_NTOHS		/**/
+
+/* HAS_ISASCII:
+ *	This manifest constant lets the C program know that isascii 
+ *	is available.
+ */
+#undef HAS_ISASCII		/**/
+
+/* HAS_KILLPG:
+ *	This symbol, if defined, indicates that the killpg routine is available
+ *	to kill process groups.  If unavailable, you probably should use kill
+ *	with a negative process number.
+ */
+#undef HAS_KILLPG	/**/
+
+/* HAS_LINK:
+ *	This symbol, if defined, indicates that the link routine is
+ *	available to create hard links.
+ */
+#define HAS_LINK	/**/
+
+/* HAS_LOCALECONV:
+ *	This symbol, if defined, indicates that the localeconv routine is
+ *	available for numeric and monetary formatting conventions.
+ */
+#define HAS_LOCALECONV	/**/
+
+/* HAS_LOCKF:
+ *	This symbol, if defined, indicates that the lockf routine is
+ *	available to do file locking.
+ */
+#undef HAS_LOCKF		/**/
+
+/* HAS_LSTAT:
+ *	This symbol, if defined, indicates that the lstat routine is
+ *	available to do file stats on symbolic links.
+ */
+#define HAS_LSTAT		/**/
+
+/* HAS_MBLEN:
+ *	This symbol, if defined, indicates that the mblen routine is available
+ *	to find the number of bytes in a multibye character.
+ */
+#define HAS_MBLEN		/**/
+
+/* HAS_MBSTOWCS:
+ *	This symbol, if defined, indicates that the mbstowcs routine is
+ *	available to covert a multibyte string into a wide character string.
+ */
+#define	HAS_MBSTOWCS		/**/
+
+/* HAS_MBTOWC:
+ *	This symbol, if defined, indicates that the mbtowc routine is available
+ *	to covert a multibyte to a wide character.
+ */
+#define HAS_MBTOWC		/**/
+
+/* HAS_MEMCMP:
+ *	This symbol, if defined, indicates that the memcmp routine is available
+ *	to compare blocks of memory.
+ */
+#define HAS_MEMCMP	/**/
+
+/* HAS_MEMCPY:
+ *	This symbol, if defined, indicates that the memcpy routine is available
+ *	to copy blocks of memory.
+ */
+#define HAS_MEMCPY	/**/
+
+/* HAS_MEMMOVE:
+ *	This symbol, if defined, indicates that the memmove routine is available
+ *	to copy potentially overlapping blocks of memory. This should be used
+ *	only when HAS_SAFE_BCOPY is not defined. If neither is there, roll your
+ *	own version.
+ */
+#define HAS_MEMMOVE	/**/
+
+/* HAS_MEMSET:
+ *	This symbol, if defined, indicates that the memset routine is available
+ *	to set blocks of memory.
+ */
+#define HAS_MEMSET	/**/
+
+/* HAS_MKDIR:
+ *	This symbol, if defined, indicates that the mkdir routine is available
+ *	to create directories.  Otherwise you should fork off a new process to
+ *	exec /bin/mkdir.
+ */
+#define HAS_MKDIR		/**/
+
+/* HAS_MKFIFO:
+ *	This symbol, if defined, indicates that the mkfifo routine is
+ *	available to create FIFOs. Otherwise, mknod should be able to
+ *	do it for you. However, if mkfifo is there, mknod might require
+ *	super-user privileges which mkfifo will not.
+ */
+#define HAS_MKFIFO		/**/
+
+/* HAS_MKTIME:
+ *	This symbol, if defined, indicates that the mktime routine is
+ *	available.
+ */
+#define HAS_MKTIME		/**/
+
+/* HAS_MSG:
+ *	This symbol, if defined, indicates that the entire msg*(2) library is
+ *	supported (IPC mechanism based on message queues).
+ */
+#undef HAS_MSG		/**/
+
+/* HAS_NICE:
+ *	This symbol, if defined, indicates that the nice routine is
+ *	available.
+ */
+#undef HAS_NICE		/**/
+
+/* HAS_OPEN3:
+ *	This manifest constant lets the C program know that the three
+ *	argument form of open(2) is available.
+ */
+#define HAS_OPEN3		/**/
+
+/* HAS_PATHCONF:
+ *	This symbol, if defined, indicates that pathconf() is available
+ *	to determine file-system related limits and options associated
+ *	with a given filename.
+ */
+/* HAS_FPATHCONF:
+ *	This symbol, if defined, indicates that pathconf() is available
+ *	to determine file-system related limits and options associated
+ *	with a given open file descriptor.
+ */
+#define HAS_PATHCONF		/**/
+#define HAS_FPATHCONF		/**/
+
+/* HAS_PAUSE:
+ *	This symbol, if defined, indicates that the pause routine is
+ *	available to suspend a process until a signal is received.
+ */
+#define HAS_PAUSE		/**/
+
+/* HAS_PIPE:
+ *	This symbol, if defined, indicates that the pipe routine is
+ *	available to create an inter-process channel.
+ */
+#define HAS_PIPE		/**/
+
+/* HAS_POLL:
+ *	This symbol, if defined, indicates that the poll routine is
+ *	available to poll active file descriptors.
+ */
+#undef HAS_POLL		/**/
+
+/* HAS_READDIR:
+ *	This symbol, if defined, indicates that the readdir routine is
+ *	available to read directory entries. You may have to include
+ *	<dirent.h>. See I_DIRENT.
+ */
+#define HAS_READDIR		/**/
+
+/* HAS_SEEKDIR:
+ *	This symbol, if defined, indicates that the seekdir routine is
+ *	available. You may have to include <dirent.h>. See I_DIRENT.
+ */
+#undef HAS_SEEKDIR		/**/
+
+/* HAS_TELLDIR:
+ *	This symbol, if defined, indicates that the telldir routine is
+ *	available. You may have to include <dirent.h>. See I_DIRENT.
+ */
+#undef HAS_TELLDIR		/**/
+
+/* HAS_REWINDDIR:
+ *	This symbol, if defined, indicates that the rewinddir routine is
+ *	available. You may have to include <dirent.h>. See I_DIRENT.
+ */
+#define HAS_REWINDDIR		/**/
+
+/* HAS_READLINK:
+ *	This symbol, if defined, indicates that the readlink routine is
+ *	available to read the value of a symbolic link.
+ */
+#define HAS_READLINK		/**/
+
+/* HAS_RENAME:
+ *	This symbol, if defined, indicates that the rename routine is available
+ *	to rename files.  Otherwise you should do the unlink(), link(), unlink()
+ *	trick.
+ */
+#define HAS_RENAME	/**/
+
+/* HAS_RMDIR:
+ *	This symbol, if defined, indicates that the rmdir routine is
+ *	available to remove directories. Otherwise you should fork off a
+ *	new process to exec /bin/rmdir.
+ */
+#define HAS_RMDIR		/**/
+
+/* HAS_SAFE_BCOPY:
+ *	This symbol, if defined, indicates that the bcopy routine is available
+ *	to copy potentially overlapping memory blocks. Otherwise you should
+ *	probably use memmove() or memcpy(). If neither is defined, roll your
+ *	own version.
+ */
+#undef HAS_SAFE_BCOPY	/**/
+
+/* HAS_SAFE_MEMCPY:
+ *	This symbol, if defined, indicates that the memcpy routine is available
+ *	to copy potentially overlapping memory blocks. Otherwise you should
+ *	probably use memmove() or memcpy(). If neither is defined, roll your
+ *	own version.
+ */
+#undef HAS_SAFE_MEMCPY	/**/
+
+/* HAS_SELECT:
+ *	This symbol, if defined, indicates that the select routine is
+ *	available to select active file descriptors. If the timeout field
+ *	is used, <sys/time.h> may need to be included.
+ */
+#define HAS_SELECT	/* config-skip */
+
+/* HAS_SEM:
+ *	This symbol, if defined, indicates that the entire sem*(2) library is
+ *	supported.
+ */
+#undef HAS_SEM		/**/
+
+/* HAS_SETEGID:
+ *	This symbol, if defined, indicates that the setegid routine is available
+ *	to change the effective gid of the current program.
+ */
+#undef HAS_SETEGID		/**/
+
+/* HAS_SETEUID:
+ *	This symbol, if defined, indicates that the seteuid routine is available
+ *	to change the effective uid of the current program.
+ */
+#undef HAS_SETEUID		/**/
+
+/* HAS_SETLINEBUF:
+ *	This symbol, if defined, indicates that the setlinebuf routine is
+ *	available to change stderr or stdout from block-buffered or unbuffered
+ *	to a line-buffered mode.
+ */
+#undef HAS_SETLINEBUF		/**/
+
+/* HAS_SETLOCALE:
+ *	This symbol, if defined, indicates that the setlocale routine is
+ *	available to handle locale-specific ctype implementations.
+ */
+#define HAS_SETLOCALE	/**/
+
+/* HAS_SETPGID:
+ *	This symbol, if defined, indicates that the setpgid routine is
+ *	available to set process group ID.
+ */
+#define HAS_SETPGID	/**/
+
+/* HAS_SETPGRP:
+ *	This symbol, if defined, indicates that the setpgrp routine is
+ *	available to set the current process group.
+ */
+/* USE_BSDPGRP:
+ *	This symbol, if defined, indicates that the BSD notion of process
+ *	group is to be used. For instance, you have to say setpgrp(pid, pgrp)
+ *	instead of the USG setpgrp().
+ */
+#undef HAS_SETPGRP		/**/
+#undef USE_BSDPGRP		/**/
+
+/* HAS_SETPGRP2:
+ *	This symbol, if defined, indicates that the setpgrp2() (as in DG/UX)
+ *	routine is available to set the current process group.
+ */
+#undef HAS_SETPGRP2		/**/
+
+/* HAS_SETPRIORITY:
+ *	This symbol, if defined, indicates that the setpriority routine is
+ *	available to set a process's priority.
+ */
+#undef HAS_SETPRIORITY		/**/
+
+/* HAS_SETREGID:
+ *	This symbol, if defined, indicates that the setregid routine is
+ *	available to change the real and effective gid of the current
+ *	process.
+ */
+/* HAS_SETRESGID:
+ *	This symbol, if defined, indicates that the setresgid routine is
+ *	available to change the real, effective and saved gid of the current
+ *	process.
+ */
+#undef HAS_SETREGID		/**/
+#undef HAS_SETRESGID		/**/
+
+/* HAS_SETREUID:
+ *	This symbol, if defined, indicates that the setreuid routine is
+ *	available to change the real and effective uid of the current
+ *	process.
+ */
+/* HAS_SETRESUID:
+ *	This symbol, if defined, indicates that the setresuid routine is
+ *	available to change the real, effective and saved uid of the current
+ *	process.
+ */
+#undef HAS_SETREUID		/**/
+#undef HAS_SETRESUID		/**/
+
+/* HAS_SETRGID:
+ *	This symbol, if defined, indicates that the setrgid routine is available
+ *	to change the real gid of the current program.
+ */
+#undef HAS_SETRGID		/**/
+
+/* HAS_SETRUID:
+ *	This symbol, if defined, indicates that the setruid routine is available
+ *	to change the real uid of the current program.
+ */
+#undef HAS_SETRUID		/**/
+
+/* HAS_SETSID:
+ *	This symbol, if defined, indicates that the setsid routine is
+ *	available to set the process group ID.
+ */
+#define HAS_SETSID	/**/
+
+/* HAS_SHM:
+ *	This symbol, if defined, indicates that the entire shm*(2) library is
+ *	supported.
+ */
+#undef HAS_SHM		/**/
+
+/* Shmat_t:
+ *	This symbol holds the return type of the shmat() system call.
+ *	Usually set to 'void *' or 'char *'.
+ */
+/* HAS_SHMAT_PROTOTYPE:
+ *	This symbol, if defined, indicates that the sys/shm.h includes
+ *	a prototype for shmat().  Otherwise, it is up to the program to
+ *	guess one.  Shmat_t shmat _((int, Shmat_t, int)) is a good guess,
+ *	but not always right so it should be emitted by the program only
+ *	when HAS_SHMAT_PROTOTYPE is not defined to avoid conflicting defs.
+ */
+#undef Shmat_t 	/* config-skip */
+#undef HAS_SHMAT_PROTOTYPE	/**/
+
+/* HAS_SIGACTION:
+ *	This symbol, if defined, indicates that Vr4's sigaction() routine
+ *	is available.
+ */
+#define HAS_SIGACTION	/**/
+
+/* HAS_SOCKET:
+ *	This symbol, if defined, indicates that the BSD socket interface is
+ *	supported.
+ */
+/* HAS_SOCKETPAIR:
+ *	This symbol, if defined, indicates that the BSD socketpair() call is
+ *	supported.
+ */
+#define HAS_SOCKET		/**/
+#define HAS_SOCKETPAIR	/**/
+
+/* USE_STAT_BLOCKS:
+ *	This symbol is defined if this system has a stat structure declaring
+ *	st_blksize and st_blocks.
+ */
+#undef USE_STAT_BLOCKS 	/**/
+
+/* USE_STDIO_PTR:
+ *	This symbol is defined if the _ptr and _cnt fields (or similar)
+ *	of the stdio FILE structure can be used to access the stdio buffer
+ *	for a file handle.  If this is defined, then the FILE_ptr(fp)
+ *	and FILE_cnt(fp) macros will also be defined and should be used
+ *	to access these fields.
+ */
+/* USE_STDIO_BASE:
+ *	This symbol is defined if the _base field (or similar) of the
+ *	stdio FILE structure can be used to access the stdio buffer for
+ *	a file handle.  If this is defined, then the FILE_base(fp) macro
+ *	will also be defined and should be used to access this field.
+ *	Also, the FILE_bufsiz(fp) macro will be defined and should be used
+ *	to determine the number of bytes in the buffer.  USE_STDIO_BASE
+ *	will never be defined unless USE_STDIO_PTR is.
+ */
+#undef USE_STDIO_PTR 	/**/
+#undef USE_STDIO_BASE 	/**/
+
+/* FILE_ptr:
+ *	This macro is used to access the _ptr field (or equivalent) of the
+ *	FILE structure pointed to by its argument. This macro will always be
+ *	defined if USE_STDIO_PTR is defined.
+ */
+/* STDIO_PTR_LVALUE:
+ *	This symbol is defined if the FILE_ptr macro can be used as an
+ *	lvalue.
+ */
+/* FILE_cnt:
+ *	This macro is used to access the _cnt field (or equivalent) of the
+ *	FILE structure pointed to by its argument. This macro will always be
+ *	defined if USE_STDIO_PTR is defined.
+ */
+/* STDIO_CNT_LVALUE:
+ *	This symbol is defined if the FILE_cnt macro can be used as an
+ *	lvalue.
+ */
+#ifdef USE_STDIO_PTR
+#define FILE_ptr(fp)	((fp)->_ptr)
+#define STDIO_PTR_LVALUE 		/**/
+#define FILE_cnt(fp)	((fp)->_cnt)
+#define STDIO_CNT_LVALUE 		/**/
+#endif
+
+/* FILE_base:
+ *	This macro is used to access the _base field (or equivalent) of the
+ *	FILE structure pointed to by its argument. This macro will always be
+ *	defined if USE_STDIO_BASE is defined.
+ */
+/* FILE_bufsiz:
+ *	This macro is used to determine the number of bytes in the I/O
+ *	buffer pointed to by _base field (or equivalent) of the FILE
+ *	structure pointed to its argument. This macro will always be defined
+ *	if USE_STDIO_BASE is defined.
+ */
+#ifdef USE_STDIO_BASE
+#define FILE_base(fp)	((fp)->_base)
+#define FILE_bufsiz(fp)	((fp)->_cnt + (fp)->_ptr - (fp)->_base)
+#endif
+
+/* HAS_STRCHR:
+ *	This symbol is defined to indicate that the strchr()/strrchr()
+ *	functions are available for string searching. If not, try the
+ *	index()/rindex() pair.
+ */
+/* HAS_INDEX:
+ *	This symbol is defined to indicate that the index()/rindex()
+ *	functions are available for string searching.
+ */
+#define HAS_STRCHR	/**/
+#undef HAS_INDEX	/**/
+
+/* HAS_STRCOLL:
+ *	This symbol, if defined, indicates that the strcoll routine is
+ *	available to compare strings using collating information.
+ */
+#define HAS_STRCOLL	/**/
+
+/* USE_STRUCT_COPY:
+ *	This symbol, if defined, indicates that this C compiler knows how
+ *	to copy structures.  If undefined, you'll need to use a block copy
+ *	routine of some sort instead.
+ */
+#define	USE_STRUCT_COPY	/**/
+
+/* HAS_STRERROR:
+ *	This symbol, if defined, indicates that the strerror routine is
+ *	available to translate error numbers to strings. See the writeup
+ *	of Strerror() in this file before you try to define your own.
+ */
+/* HAS_SYS_ERRLIST:
+ *	This symbol, if defined, indicates that the sys_errlist array is
+ *	available to translate error numbers to strings. The extern int
+ *	sys_nerr gives the size of that table.
+ */
+/* Strerror:
+ *	This preprocessor symbol is defined as a macro if strerror() is
+ *	not available to translate error numbers to strings but sys_errlist[]
+ *	array is there.
+ */
+#define HAS_STRERROR		/**/
+#define HAS_SYS_ERRLIST	/**/
+#define Strerror(e) strerror(e)
+
+/* HAS_STRXFRM:
+ *	This symbol, if defined, indicates that the strxfrm() routine is
+ *	available to transform strings.
+ */
+#define HAS_STRXFRM	/**/
+
+/* HAS_SYMLINK:
+ *	This symbol, if defined, indicates that the symlink routine is available
+ *	to create symbolic links.
+ */
+#define HAS_SYMLINK	/**/
+
+/* HAS_SYSCALL:
+ *	This symbol, if defined, indicates that the syscall routine is
+ *	available to call arbitrary system calls. If undefined, that's tough.
+ */
+#undef HAS_SYSCALL	/**/
+
+/* HAS_SYSCONF:
+ *	This symbol, if defined, indicates that sysconf() is available
+ *	to determine system related limits and options.
+ */
+#define HAS_SYSCONF	/**/
+
+/* HAS_SYSTEM:
+ *	This symbol, if defined, indicates that the system routine is
+ *	available to issue a shell command.
+ */
+#define HAS_SYSTEM	/**/
+
+/* HAS_TCGETPGRP:
+ *	This symbol, if defined, indicates that the tcgetpgrp routine is
+ *	available to get foreground process group ID.
+ */
+#define HAS_TCGETPGRP		/**/
+
+/* HAS_TCSETPGRP:
+ *	This symbol, if defined, indicates that the tcsetpgrp routine is
+ *	available to set foreground process group ID.
+ */
+#define HAS_TCSETPGRP		/**/
+
+/* Time_t:
+ *	This symbol holds the type returned by time(). It can be long,
+ *	or time_t on BSD sites (in which case <sys/types.h> should be
+ *	included).
+ */
+#define Time_t time_t		/* Time type */
+
+/* HAS_TIMES:
+ *	This symbol, if defined, indicates that the times() routine exists.
+ *	Note that this became obsolete on some systems (SUNOS), which now
+ * use getrusage(). It may be necessary to include <sys/times.h>.
+ */
+#define HAS_TIMES		/**/
+
+/* HAS_TRUNCATE:
+ *	This symbol, if defined, indicates that the truncate routine is
+ *	available to truncate files.
+ */
+#undef HAS_TRUNCATE	/**/
+
+/* HAS_TZNAME:
+ *	This symbol, if defined, indicates that the tzname[] array is
+ *	available to access timezone names.
+ */
+#define HAS_TZNAME		/**/
+
+/* HAS_UMASK:
+ *	This symbol, if defined, indicates that the umask routine is
+ *	available to set and get the value of the file creation mask.
+ */
+#define HAS_UMASK		/**/
+
+/* HAS_VFORK:
+ *	This symbol, if defined, indicates that vfork() exists.
+ */
+#undef HAS_VFORK	/**/
+
+/* Signal_t:
+ *	This symbol's value is either "void" or "int", corresponding to the
+ *	appropriate return type of a signal handler.  Thus, you can declare
+ *	a signal handler using "Signal_t (*handler)()", and define the
+ *	handler using "Signal_t handler(sig)".
+ */
+#define Signal_t void	/* Signal handler's return type */
+
+/* HASVOLATILE:
+ *	This symbol, if defined, indicates that this C compiler knows about
+ *	the volatile declaration.
+ */
+#define	HASVOLATILE	/**/
+#ifndef HASVOLATILE
+#define volatile /* config-skip */
+#endif
+
+/* HAS_VPRINTF:
+ *	This symbol, if defined, indicates that the vprintf routine is available
+ *	to printf with a pointer to an argument list.  If unavailable, you
+ *	may need to write your own, probably in terms of _doprnt().
+ */
+/* USE_CHAR_VSPRINTF:
+ *	This symbol is defined if this system has vsprintf() returning type
+ *	(char*).  The trend seems to be to declare it as "int vsprintf()".  It
+ *	is up to the package author to declare vsprintf correctly based on the
+ *	symbol.
+ */
+#define HAS_VPRINTF	/**/
+#define USE_CHAR_VSPRINTF 	/**/
+
+/* HAS_WAIT4:
+ *	This symbol, if defined, indicates that wait4() exists.
+ */
+#undef HAS_WAIT4	/**/
+
+/* HAS_WAITPID:
+ *	This symbol, if defined, indicates that the waitpid routine is
+ *	available to wait for child process.
+ */
+#undef HAS_WAITPID	/**/
+
+/* HAS_WCSTOMBS:
+ *	This symbol, if defined, indicates that the wcstombs routine is
+ *	available to convert wide character strings to multibyte strings.
+ */
+#define HAS_WCSTOMBS	/**/
+
+/* HAS_WCTOMB:
+ *	This symbol, if defined, indicates that the wctomb routine is available
+ *	to covert a wide character to a multibyte.
+ */
+#define HAS_WCTOMB		/**/
+
+/* Fpos_t:
+ *	This symbol holds the type used to declare file positions in libc.
+ *	It can be fpos_t, long, uint, etc... It may be necessary to include
+ *	<sys/types.h> to get any typedef'ed information.
+ */
+#define Fpos_t fpos_t		/* File position type */
+
+/* Gid_t:
+ *	This symbol holds the return type of getgid() and the type of
+ *	argument to setrgid() and related functions.  Typically,
+ *	it is the type of group ids in the kernel. It can be int, ushort,
+ *	uid_t, etc... It may be necessary to include <sys/types.h> to get
+ *	any typedef'ed information.
+ */
+#define Gid_t gid_t		/* config-skip */
+
+/* Groups_t:
+ *	This symbol holds the type used for the second argument to
+ *	getgroups().  Usually, this is the same of gidtype, but
+ *	sometimes it isn't.  It can be int, ushort, uid_t, etc... 
+ *	It may be necessary to include <sys/types.h> to get any 
+ *	typedef'ed information.  This is only required if you have
+ *	getgroups().
+ */
+#ifdef HAS_GETGROUPS
+#define Groups_t gid_t	/* Type for 2nd arg to getgroups() */
+#endif
+
+/* DB_Prefix_t:
+ *	This symbol contains the type of the prefix structure element
+ *	in the <db.h> header file.  In older versions of DB, it was
+ *	int, while in newer ones it is u_int32_t.
+ */
+/* DB_Hash_t:
+ *	This symbol contains the type of the prefix structure element
+ *	in the <db.h> header file.  In older versions of DB, it was
+ *	int, while in newer ones it is size_t.
+ */
+#define DB_Hash_t	int		/**/
+#define DB_Prefix_t	int  	/**/
+
+/* I_DIRENT:
+ *	This symbol, if defined, indicates to the C program that it should
+ *	include <dirent.h>. Using this symbol also triggers the definition
+ *	of the Direntry_t define which ends up being 'struct dirent' or
+ *	'struct direct' depending on the availability of <dirent.h>.
+ */
+/* DIRNAMLEN:
+ *	This symbol, if defined, indicates to the C program that the length
+ *	of directory entry names is provided by a d_namlen field.  Otherwise
+ *	you need to do strlen() on the d_name field.
+ */
+/* Direntry_t:
+ *	This symbol is set to 'struct direct' or 'struct dirent' depending on
+ *	whether dirent is available or not. You should use this pseudo type to
+ *	portably declare your directory entries.
+ */
+#define I_DIRENT		/**/
+#undef DIRNAMLEN	/**/
+#define Direntry_t struct dirent
+
+/* I_DLFCN:
+ *	This symbol, if defined, indicates that <dlfcn.h> exists and should
+ *	be included.
+ */
+#undef I_DLFCN		/**/
+
+/* I_FCNTL:
+ *	This manifest constant tells the C program to include <fcntl.h>.
+ */
+#define I_FCNTL	/**/
+
+/* I_FLOAT:
+ *	This symbol, if defined, indicates to the C program that it should
+ *	include <float.h> to get definition of symbols like DBL_MAX or
+ *	DBL_MIN, i.e. machine dependent floating point values.
+ */
+#define I_FLOAT		/**/
+
+/* I_GRP:
+ *	This symbol, if defined, indicates to the C program that it should
+ *	include <grp.h>.
+ */
+#define I_GRP		/**/
+
+/* I_LIMITS:
+ *	This symbol, if defined, indicates to the C program that it should
+ *	include <limits.h> to get definition of symbols like WORD_BIT or
+ *	LONG_MAX, i.e. machine dependant limitations.
+ */
+#define I_LIMITS		/**/
+
+/* I_MATH:
+ *	This symbol, if defined, indicates to the C program that it should
+ *	include <math.h>.
+ */
+#define I_MATH		/**/
+
+/* I_MEMORY:
+ *	This symbol, if defined, indicates to the C program that it should
+ *	include <memory.h>.
+ */
+#undef I_MEMORY		/**/
+
+/* I_NDBM:
+ *	This symbol, if defined, indicates that <ndbm.h> exists and should
+ *	be included.
+ */
+#undef I_NDBM	/**/
+
+/* I_NET_ERRNO:
+ *	This symbol, if defined, indicates that <net/errno.h> exists and 
+ *	should be included.
+ */
+#undef I_NET_ERRNO		/* config-skip */
+
+/* I_NETINET_IN:
+ *	This symbol, if defined, indicates to the C program that it should
+ *	include <netinet/in.h>. Otherwise, you may try <sys/in.h>.
+ */
+#define I_NETINET_IN	/* config-skip */
+
+/* I_PWD:
+ *	This symbol, if defined, indicates to the C program that it should
+ *	include <pwd.h>.
+ */
+/* PWQUOTA:
+ *	This symbol, if defined, indicates to the C program that struct passwd
+ *	contains pw_quota.
+ */
+/* PWAGE:
+ *	This symbol, if defined, indicates to the C program that struct passwd
+ *	contains pw_age.
+ */
+/* PWCHANGE:
+ *	This symbol, if defined, indicates to the C program that struct passwd
+ *	contains pw_change.
+ */
+/* PWCLASS:
+ *	This symbol, if defined, indicates to the C program that struct passwd
+ *	contains pw_class.
+ */
+/* PWEXPIRE:
+ *	This symbol, if defined, indicates to the C program that struct passwd
+ *	contains pw_expire.
+ */
+/* PWCOMMENT:
+ *	This symbol, if defined, indicates to the C program that struct passwd
+ *	contains pw_comment.
+ */
+#define I_PWD		/**/
+#undef PWQUOTA	/**/
+#undef PWAGE	/**/
+#undef PWCHANGE	/**/
+#undef PWCLASS	/**/
+#undef PWEXPIRE	/**/
+#undef PWCOMMENT	/**/
+
+/* I_STDDEF:
+ *	This symbol, if defined, indicates that <stddef.h> exists and should
+ *	be included.
+ */
+#define I_STDDEF	/**/
+
+/* I_STDLIB:
+ *	This symbol, if defined, indicates that <stdlib.h> exists and should
+ *	be included.
+ */
+#define I_STDLIB		/**/
+
+/* I_STRING:
+ *	This symbol, if defined, indicates to the C program that it should
+ *	include <string.h> (USG systems) instead of <strings.h> (BSD systems).
+ */
+#define I_STRING		/**/
+
+/* I_SYS_DIR:
+ *	This symbol, if defined, indicates to the C program that it should
+ *	include <sys/dir.h>.
+ */
+#undef I_SYS_DIR		/**/
+
+/* I_SYS_FILE:
+ *	This symbol, if defined, indicates to the C program that it should
+ *	include <sys/file.h> to get definition of R_OK and friends.
+ */
+#undef I_SYS_FILE		/**/
+
+/* I_SYS_IOCTL:
+ *	This symbol, if defined, indicates that <sys/ioctl.h> exists and should
+ *	be included. Otherwise, include <sgtty.h> or <termio.h>.
+ */
+#define	I_SYS_IOCTL		/**/
+
+/* I_SYS_NDIR:
+ *	This symbol, if defined, indicates to the C program that it should
+ *	include <sys/ndir.h>.
+ */
+#undef I_SYS_NDIR	/**/
+
+/* I_SYS_PARAM:
+ *	This symbol, if defined, indicates to the C program that it should
+ *	include <sys/param.h>.
+ */
+#define I_SYS_PARAM		/**/
+
+/* Plan 9: file position in Plan 9 is <select.h> */
+/* I_SYS_SELECT:
+ *	This symbol, if defined, indicates to the C program that it should
+ *	include <sys/select.h> in order to get definition of struct timeval.
+ */
+#undef I_SYS_SELECT	/**/
+
+/* I_SYS_TIMES:
+ *	This symbol, if defined, indicates to the C program that it should
+ *	include <sys/times.h>.
+ */
+#define	I_SYS_TIMES		/**/
+
+/* I_SYS_TYPES:
+ *	This symbol, if defined, indicates to the C program that it should
+ *	include <sys/types.h>.
+ */
+#define	I_SYS_TYPES		/**/
+
+/* I_SYS_UN:
+ *	This symbol, if defined, indicates to the C program that it should
+ *	include <sys/un.h> to get UNIX domain socket definitions.
+ */
+#define I_SYS_UN		/**/
+
+/* I_TERMIO:
+ *	This symbol, if defined, indicates that the program should include
+ *	<termio.h> rather than <sgtty.h>.  There are also differences in
+ *	the ioctl() calls that depend on the value of this symbol.
+ */
+/* I_TERMIOS:
+ *	This symbol, if defined, indicates that the program should include
+ *	the POSIX termios.h rather than sgtty.h or termio.h.
+ *	There are also differences in the ioctl() calls that depend on the
+ *	value of this symbol.
+ */
+/* I_SGTTY:
+ *	This symbol, if defined, indicates that the program should include
+ *	<sgtty.h> rather than <termio.h>.  There are also differences in
+ *	the ioctl() calls that depend on the value of this symbol.
+ */
+#undef I_TERMIO		/**/
+#define I_TERMIOS		/**/
+#undef I_SGTTY		/**/
+
+/* Plan 9: P9 has both <time.h> and <sys/time.h> */
+/* I_TIME:
+ *	This symbol, if defined, indicates to the C program that it should
+ *	include <time.h>.
+ */
+/* I_SYS_TIME:
+ *	This symbol, if defined, indicates to the C program that it should
+ *	include <sys/time.h>.
+ */
+/* I_SYS_TIME_KERNEL:
+ *	This symbol, if defined, indicates to the C program that it should
+ *	include <sys/time.h> with KERNEL defined.
+ */
+#define I_TIME		/**/
+#define I_SYS_TIME		/**/
+#undef I_SYS_TIME_KERNEL		/**/
+
+/* I_UNISTD:
+ *	This symbol, if defined, indicates to the C program that it should
+ *	include <unistd.h>.
+ */
+#define I_UNISTD		/**/
+
+/* I_UTIME:
+ *	This symbol, if defined, indicates to the C program that it should
+ *	include <utime.h>.
+ */
+#define I_UTIME		/**/
+
+/* I_VFORK:
+ *	This symbol, if defined, indicates to the C program that it should
+ *	include vfork.h.
+ */
+#undef I_VFORK	/**/
+
+/* Off_t:
+ *	This symbol holds the type used to declare offsets in the kernel.
+ *	It can be int, long, off_t, etc... It may be necessary to include
+ *	<sys/types.h> to get any typedef'ed information.
+ */
+#define Off_t off_t		/* <offset> type */
+
+/* Mode_t:
+ *	This symbol holds the type used to declare file modes 
+ *	for systems calls.  It is usually mode_t, but may be
+ *	int or unsigned short.  It may be necessary to include <sys/types.h>
+ *	to get any typedef'ed information.
+ */
+#define Mode_t mode_t	 /* file mode parameter for system calls */
+
+/* CAN_PROTOTYPE:
+ *	If defined, this macro indicates that the C compiler can handle
+ *	function prototypes.
+ */
+/* _:
+ *	This macro is used to declare function parameters for folks who want
+ *	to make declarations with prototypes using a different style than
+ *	the above macros.  Use double parentheses.  For example:
+ *
+ *		int main _((int argc, char *argv[]));
+ */
+#define	CAN_PROTOTYPE	/**/
+#ifdef CAN_PROTOTYPE
+#define	_(args) args 	/* config-skip */
+#else
+#define	_(args) () 		/* config-skip */	
+#endif
+
+/* RANDBITS:
+ *	This symbol contains the number of bits of random number the rand()
+ *	function produces.  Usual values are 15, 16, and 31.
+ */
+#define RANDBITS 15		/**/
+
+/* SCRIPTDIR:
+ *	This symbol holds the name of the directory in which the user wants
+ *	to put publicly executable scripts for the package in question.  It
+ *	is often a directory that is mounted across diverse architectures.
+ *	Programs must be prepared to deal with ~name expansion.
+ */
+#define SCRIPTDIR "/bin"	
+
+/* Select_fd_set_t:
+ *	This symbol holds the type used for the 2nd, 3rd, and 4th
+ *	arguments to select.  Usually, this is 'fd_set *', if HAS_FD_SET
+ *	is defined, and 'int *' otherwise.  This is only useful if you 
+ *	have select(), of course.
+ */
+#define Select_fd_set_t 	fd_set *	/**/
+
+/* Size_t:
+ *	This symbol holds the type used to declare length parameters
+ *	for string functions.  It is usually size_t, but may be
+ *	unsigned long, int, etc.  It may be necessary to include
+ *	<sys/types.h> to get any typedef'ed information.
+ */
+#define Size_t size_t	 /* length paramater for string functions */
+
+/* SSize_t:
+ *	This symbol holds the type used by functions that return
+ *	a count of bytes or an error condition.  It must be a signed type.
+ *	It is usually ssize_t, but may be long or int, etc.
+ *	It may be necessary to include <sys/types.h> or <unistd.h>
+ *	to get any typedef'ed information.
+ *	We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
+ */
+#define SSize_t ssize_t	 /* signed count of bytes */
+
+/* STDCHAR:
+ *	This symbol is defined to be the type of char used in stdio.h.
+ *	It has the values "unsigned char" or "char".
+ */
+#define STDCHAR char	/**/
+
+/* Uid_t:
+ *	This symbol holds the type used to declare user ids in the kernel.
+ *	It can be int, ushort, uid_t, etc... It may be necessary to include
+ *	<sys/types.h> to get any typedef'ed information.
+ */
+#define Uid_t uid_t		/* UID type */
+
+/* PLAN9:
+	This symbol, if defined, indicates that the program is running under the
+*	Plan 9 operating system.
+*/
+#define PLAN9		/**/
+
+#define OSNAME "plan9"
+
+#define BIN_SH "/bin/rc"
+
+/* MYMALLOC:
+ *	This symbol, if defined, indicates that we're using our own malloc.
+ */
+#undef MYMALLOC			/**/
+
+
+#undef VMS
+
+/* LOC_SED:
+ *	This symbol holds the complete pathname to the sed program.
+ */
+#define LOC_SED 	"/bin/sed"	/**/
+
+/* ARCHLIB_EXP:
+ *	This symbol contains the ~name expanded version of ARCHLIB, to be used
+ *	in programs that are not prepared to deal with ~ expansion at run-time.
+ */
+#define ARCHLIB_EXP "/_P9P_OBJTYPE/lib/perl/_P9P_VERSION"
+
+/* BYTEORDER:
+ *	This symbol hold the hexadecimal constant defined in byteorder,
+ *	i.e. 0x1234 or 0x4321, etc...
+ */
+#define BYTEORDER 0x1234	/* large digits for MSB */
+
+/* CSH:
+ *	This symbol, if defined, indicates that the C-shell exists.
+ *	If defined, contains the full pathname of csh.
+ */
+#undef CSH 		/**/
+
+/* DLSYM_NEEDS_UNDERSCORE:
+ *	This symbol, if defined, indicates that we need to prepend an
+ *	underscore to the symbol name before calling dlsym().  This only
+ *	makes sense if you *have* dlsym, which we will presume is the
+ *	case if you're using dl_dlopen.xs.
+ */
+#undef DLSYM_NEEDS_UNDERSCORE 	/* */
+
+/* SETUID_SCRIPTS_ARE_SECURE_NOW:
+ *	This symbol, if defined, indicates that the bug that prevents
+ *	setuid scripts from being secure is not present in this kernel.
+ */
+/* DOSUID:
+ *	This symbol, if defined, indicates that the C program should
+ *	check the script that it is executing for setuid/setgid bits, and
+ *	attempt to emulate setuid/setgid on systems that have disabled
+ *	setuid #! scripts because the kernel can't do it securely.
+ *	It is up to the package designer to make sure that this emulation
+ *	is done securely.  Among other things, it should do an fstat on
+ *	the script it just opened to make sure it really is a setuid/setgid
+ *	script, it should make sure the arguments passed correspond exactly
+ *	to the argument on the #! line, and it should not trust any
+ *	subprocesses to which it must pass the filename rather than the
+ *	file descriptor of the script to be executed.
+ */
+#define SETUID_SCRIPTS_ARE_SECURE_NOW	/**/
+#undef DOSUID		/**/
+
+/* Gconvert:
+ *	This preprocessor macro is defined to convert a floating point
+ *	number to a string without a trailing decimal point.  This
+ *	emulates the behavior of sprintf("%g"), but is sometimes much more
+ *	efficient.  If gconvert() is not available, but gcvt() drops the
+ *	trailing decimal point, then gcvt() is used.  If all else fails,
+ *	a macro using sprintf("%g") is used. Arguments for the Gconvert
+ *	macro are: value, number of digits, whether trailing zeros should
+ *	be retained, and the output buffer.
+ *	Possible values are:
+ *		d_Gconvert='gconvert((x),(n),(t),(b))'
+ *		d_Gconvert='gcvt((x),(n),(b))'
+ *		d_Gconvert='sprintf((b),"%.*g",(n),(x))'
+ *	The last two assume trailing zeros should not be kept.
+ */
+#define Gconvert(x,n,t,b) sprintf((b),"%.*g",(n),(x))
+
+/* Sigjmp_buf:
+ * This is the buffer type to be used with Sigsetjmp and Siglongjmp.
+ */
+/* Sigsetjmp:
+ * This macro is used in the same way as sigsetjmp(), but will invoke
+ * traditional setjmp() if sigsetjmp isn't available.
+ */
+/* Siglongjmp:
+ * This macro is used in the same way as siglongjmp(), but will invoke
+ * traditional longjmp() if siglongjmp isn't available.
+ */
+#define HAS_SIGSETJMP	/**/  /* config-skip */
+#define Sigjmp_buf sigjmp_buf /* config-skip */
+#define Sigsetjmp(buf,save_mask) sigsetjmp(buf,save_mask)  /* config-skip */
+#define Siglongjmp(buf,retval) siglongjmp(buf,retval)    /* config-skip */
+
+/* USE_DYNAMIC_LOADING:
+ *	This symbol, if defined, indicates that dynamic loading of
+ *	some sort is available.
+ */
+#undef USE_DYNAMIC_LOADING		/**/
+
+/* I_DBM:
+ *	This symbol, if defined, indicates that <dbm.h> exists and should
+ *	be included.
+ */
+/* I_RPCSVC_DBM:
+ *	This symbol, if defined, indicates that <rpcsvc/dbm.h> exists and
+ *	should be included.
+ */
+#undef I_DBM	/**/
+#undef I_RPCSVC_DBM	/**/
+
+/* I_LOCALE:
+ *	This symbol, if defined, indicates to the C program that it should
+ *	include <locale.h>.
+ */
+#define	I_LOCALE		/**/
+
+/* I_SYS_STAT:
+ *	This symbol, if defined, indicates to the C program that it should
+ *	include <sys/stat.h>.
+ */
+#define	I_SYS_STAT		/**/
+
+/* I_STDARG:
+ *	This symbol, if defined, indicates that <stdarg.h> exists and should
+ *	be included.
+ */
+/* I_VARARGS:
+ *	This symbol, if defined, indicates to the C program that it should
+ *	include <varargs.h>.
+ */
+#define I_STDARG		/**/
+#undef I_VARARGS	/**/
+
+/* INTSIZE:
+ *	This symbol contains the size of an int, so that the C preprocessor
+ *	can make decisions based on it.
+ */
+#define INTSIZE 4		/**/
+
+/* Free_t:
+ *	This variable contains the return type of free().  It is usually
+ * void, but occasionally int.
+ */
+/* Malloc_t:
+ *	This symbol is the type of pointer returned by malloc and realloc.
+ */
+#define Malloc_t void *			/**/
+#define Free_t void			/**/
+
+/* VAL_O_NONBLOCK:
+ *	This symbol is to be used during open() or fcntl(F_SETFL) to turn on
+ *	non-blocking I/O for the file descriptor. Note that there is no way
+ *	back, i.e. you cannot turn it blocking again this way. If you wish to
+ *	alternatively switch between blocking and non-blocking, use the
+ *	ioctl(FIOSNBIO) call instead, but that is not supported by all devices.
+ */
+/* VAL_EAGAIN:
+ *	This symbol holds the errno error code set by read() when no data was
+ *	present on the non-blocking file descriptor.
+ */
+/* RD_NODATA:
+ *	This symbol holds the return code from read() when no data is present
+ *	on the non-blocking file descriptor. Be careful! If EOF_NONBLOCK is
+ *	not defined, then you can't distinguish between no data and EOF by
+ *	issuing a read(). You'll have to find another way to tell for sure!
+ */
+/* EOF_NONBLOCK:
+ *	This symbol, if defined, indicates to the C program that a read() on
+ *	a non-blocking file descriptor will return 0 on EOF, and not the value
+ *	held in RD_NODATA (-1 usually, in that case!).
+ */
+#define VAL_O_NONBLOCK O_NONBLOCK
+#define VAL_EAGAIN EAGAIN
+#define RD_NODATA -1
+#define EOF_NONBLOCK
+
+/* OLDARCHLIB_EXP:
+ *	This symbol contains the ~name expanded version of OLDARCHLIB, to be
+ *	used in programs that are not prepared to deal with ~ expansion at 
+ *	run-time.
+ */
+#undef OLDARCHLIB_EXP		/**/
+
+/* PRIVLIB_EXP:
+ *	This symbol contains the ~name expanded version of PRIVLIB, to be used
+ *	in programs that are not prepared to deal with ~ expansion at run-time.
+ */
+#define PRIVLIB_EXP "/sys/lib/perl"		/* */
+
+/* SIG_NAME:
+ *	This symbol contains a list of signal names in order of
+ *	signal number. This is intended
+ *	to be used as a static array initialization, like this:
+ *		char *sig_name[] = { SIG_NAME };
+ *	The signals in the list are separated with commas, and each signal
+ *	is surrounded by double quotes. There is no leading SIG in the signal
+ *	name, i.e. SIGQUIT is known as "QUIT".
+ *	Gaps in the signal numbers (up to NSIG) are filled in with NUMnn,
+ *	etc., where nn is the actual signal number (e.g. NUM37).
+ *	The signal number for sig_name[i] is stored in sig_num[i].
+ *	The last element is 0 to terminate the list with a NULL.  This
+ *	corresponds to the 0 at the end of the sig_num list.
+ */
+/* SIG_NUM:
+ *	This symbol contains a list of signal numbers, in the same order as the
+ *	SIG_NAME list. It is suitable for static array initialization, as in:
+ *		int sig_num[] = { SIG_NUM };
+ *	The signals in the list are separated with commas, and the indices
+ *	within that list and the SIG_NAME list match, so it's easy to compute
+ *	the signal name from a number or vice versa at the price of a small
+ *	dynamic linear lookup. 
+ *	Duplicates are allowed, but are moved to the end of the list.
+ *	The signal number corresponding to sig_name[i] is sig_number[i].
+ *	if (i < NSIG) then sig_number[i] == i.  
+ *	The last element is 0, corresponding to the 0 at the end of
+ *	the sig_name list.
+ */
+#define SIG_NAME "ZERO","HUP","INT","QUIT","ILL","ABRT","FPE","KILL","SEGV","PIPE","ALRM","TERM","USR1","USR2","CHLD","CONT","STOP","TSTP","TTIN","TTOU",0 /* config-skip */
+#define SIG_NUM 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,0	/* config-skip */
+
+/* SITELIB_EXP:
+ *	This symbol contains the ~name expanded version of SITELIB, to be used
+ *	in programs that are not prepared to deal with ~ expansion at run-time.
+ */
+#define SITELIB_EXP  "/sys/lib/perl/site_perl"	/* */
+
+/* SITEARCH_EXP:
+ *	This symbol contains the ~name expanded version of SITEARCH, to be used
+ *	in programs that are not prepared to deal with ~ expansion at run-time.
+ */
+#define SITEARCH_EXP  "/_P9P_OBJTYPE/lib/perl/_P9P_VERSION/site_perl"		/* */
+
+/* STARTPERL:
+ *	This variable contains the string to put in front of a perl
+ *	script to make sure (one hopes) that it runs with perl and not
+ *	some shell.
+ */
+#define STARTPERL "#!/bin/perl"		/**/
+
+/* VOIDFLAGS:
+ *	This symbol indicates how much support of the void type is given by this
+ *	compiler.  What various bits mean:
+ *
+ *	    1 = supports declaration of void
+ *	    2 = supports arrays of pointers to functions returning void
+ *	    4 = supports comparisons between pointers to void functions and
+ *		    addresses of void functions
+ *	    8 = suports declaration of generic void pointers
+ *
+ *	The package designer should define VOIDUSED to indicate the requirements
+ *	of the package.  This can be done either by #defining VOIDUSED before
+ *	including config.h, or by defining defvoidused in Myinit.U.  If the
+ *	latter approach is taken, only those flags will be tested.  If the
+ *	level of void support necessary is not present, defines void to int.
+ */
+#ifndef VOIDUSED
+#define VOIDUSED 15
+#endif
+#define VOIDFLAGS 15
+#if (VOIDFLAGS & VOIDUSED) != VOIDUSED
+#define void int		/* is void to be avoided? */ /* config-skip */
+#define M_VOID			/* Xenix strikes again */ /* config-skip */
+#endif
+
+#endif