config.h

早期freebsd实现

#ifndef config_h
#define config_h
/* config.h
 *
 * This file is hand tailored for MS-DOS and MSC 5.1 and 6.00A.
 * Tom Dinger, March 1991.
 */


/*
 * BUGGY_MSC5:
 *	This symbol is defined if you are the unfortunate owner of the buggy
 *	Microsoft C compiler version 5.1.  It is used as a conditional to
 *	guard code sections that are known to break this compiler.
 * BUGGY_MSC6:
 *	This symbol is defined if you are the unfortunate owner of the buggy
 *	Microsoft C compiler version 6.0A.  It is used as a conditional to
 *	guard code sections that are known to break this compiler.
 */
#define BUGGY_MSC5			/**/
/*#undef BUGGY_MSC6			/**/


/* EUNICE
 *	This symbol, if defined, indicates that the program is being compiled
 *	under the EUNICE package under VMS.  The program will need to handle
 *	things like files that don't go away the first time you unlink them,
 *	due to version numbering.  It will also need to compensate for lack
 *	of a respectable link() command.
 */
/* VMS
 *	This symbol, if defined, indicates that the program is running under
 *	VMS.  It is currently only set in conjunction with the EUNICE symbol.
 */
/*#undef	EUNICE		/**/
/*#undef	VMS		/**/

/* ALIGNBYTES
 *	This symbol contains the number of bytes required to align a double.
 *	Usual values are 2, 4, and 8.
 */
#define ALIGNBYTES 4		/**/

/* BIN
 *	This symbol holds the name of the directory in which the user wants
 *	to keep publicly executable images for the package in question.  It
 *	is most often a local directory such as /usr/local/bin.
 */
#define BIN "/usr/local/bin"             /**/

/* BYTEORDER
 *	This symbol contains an encoding of the order of bytes in a long.
 *	Usual values (in octal) are 01234, 04321, 02143, 03412...
 */
#define BYTEORDER 0x1234		/**/

/* 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".
 */
/* 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 "".
 */
/* TODO: doesn't work for MSC -- it's more complicated than this */
#define CPPSTDIN "cl "
#define CPPMINUS ""

/* HAS_BCMP
 *	This symbol, if defined, indicates that the bcmp routine is available
 *	to compare blocks of memory.  If undefined, use memcmp.  If that's
 *	not available, roll your own.
 */
/*#undef	HAS_BCMP		/**/

/* HAS_BCOPY
 *	This symbol, if defined, indicates that the bcopy routine is available
 *	to copy blocks of memory.  Otherwise you should probably use memcpy().
 *	If neither is defined, roll your own.
 */
/* SAFE_BCOPY
 *	This symbol, if defined, indicates that the bcopy routine is available
 *	to copy potentially overlapping copy blocks of bcopy.  Otherwise you
 *	should probably use memmove() or memcpy().  If neither is defined,
 *	roll your own.
 */
/*#undef	HAS_BCOPY		/**/
/*#undef	SAFE_BCOPY		/**/

/* HAS_BZERO
 *	This symbol, if defined, indicates that the bzero routine is available
 *	to zero blocks of memory.  Otherwise you should probably use memset()
 *	or roll your own.
 */
/*#undef	HAS_BZERO		/**/

/* CASTNEGFLOAT
 *	This symbol, if defined, indicates that this C compiler knows how to
 *	cast negative or large floating point 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:
 *		1 = couldn't cast < 0
 *		2 = couldn't cast >= 0x80000000
 */
#define	CASTNEGFLOAT	/**/
#define	CASTFLAGS 0	/**/

/* CHARSPRINTF
 *	This symbol is defined if this system declares "char *sprintf()" in
 *	stdio.h.  The trend seems to be to declare it as "int sprintf()".  It
 *	is up to the package author to declare sprintf correctly based on the
 *	symbol.
 */
/*#undef	CHARSPRINTF 	/**/

/* 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.
 */
#define	HAS_CHSIZE		/**/

/* HAS_CRYPT
 *	This symbol, if defined, indicates that the crypt routine is available
 *	to encrypt passwords and the like.
 */
/*#undef	HAS_CRYPT		/**/

/* CSH
 *	This symbol, if defined, indicates that the C-shell exists.
 *	If defined, contains the full pathname of csh.
 */
/*#undef CSH "/usr/bin/csh"		/**/

/* 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.
 */
/*#undef DOSUID		/**/

/* HAS_DUP2
 *	This symbol, if defined, indicates that the dup2 routine is available
 *	to dup file descriptors.  Otherwise you should use dup().
 */
#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.
 */
/*#undef	HAS_FCNTL		/**/

/* FLEXFILENAMES
 *	This symbol, if defined, indicates that the system supports filenames
 *	longer than 14 characters.
 */
/*#undef	FLEXFILENAMES		/**/

/* HAS_FLOCK
 *	This symbol, if defined, indicates that the flock() routine is
 *	available to do file locking.
 */
/*#undef	HAS_FLOCK		/**/

/* 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		/**/

/* 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		/**/

/* HAS_GETPGRP
 *	This symbol, if defined, indicates that the getpgrp() routine is
 *	available to get the current process group.
 */
/*#undef	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_GETPRIORITY
 *	This symbol, if defined, indicates that the getpriority() routine is
 *	available to get a process's priority.
 */
/*#undef	HAS_GETPRIORITY		/**/

/* HAS_HTONS
 *	This symbol, if defined, indicates that the htons routine (and friends)
 *	are available to do network order byte swapping.
 */
/* HAS_HTONL
 *	This symbol, if defined, indicates that the htonl routine (and friends)
 *	are available to do network order byte swapping.
 */
/* HAS_NTOHS
 *	This symbol, if defined, indicates that the ntohs routine (and friends)
 *	are available to do network order byte swapping.
 */
/* HAS_NTOHL
 *	This symbol, if defined, indicates that the ntohl routine (and friends)
 *	are available to do network order byte swapping.
 */
/*#undef	HAS_HTONS	/**/
/*#undef	HAS_HTONL	/**/
/*#undef	HAS_NTOHS	/**/
/*#undef	HAS_NTOHL	/**/

/* index
 *	This preprocessor symbol is defined, along with rindex, if the system
 *	uses the strchr and strrchr routines instead.
 */
/* rindex
 *	This preprocessor symbol is defined, along with index, if the system
 *	uses the strchr and strrchr routines instead.
 */
#define	index strchr	/* cultural */
#define	rindex strrchr	/*  differences? */

/* HAS_ISASCII
 *	This symbol, if defined, indicates that the isascii routine is available
 *	to test characters for asciiness.
 */
#define	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_LSTAT
 *	This symbol, if defined, indicates that the lstat() routine is
 *	available to stat symbolic links.
 */
/*#undef	HAS_LSTAT		/**/

/* HAS_MEMCMP
 *	This symbol, if defined, indicates that the memcmp routine is available
 *	to compare blocks of memory.  If undefined, roll your own.
 */
#define	HAS_MEMCMP		/**/

/* HAS_MEMCPY
 *	This symbol, if defined, indicates that the memcpy routine is available
 *	to copy blocks of memory.  Otherwise you should probably use bcopy().
 *	If neither is defined, roll your own.
 */
/* SAFE_MEMCPY
 *	This symbol, if defined, indicates that the memcpy routine is available
 *	to copy potentially overlapping copy blocks of memory.  Otherwise you
 *	should probably use memmove() or bcopy().  If neither is defined,
 *	roll your own.
 */
#define	HAS_MEMCPY		/**/
/*#undef	SAFE_MEMCPY		/**/

/* HAS_MEMMOVE
 *	This symbol, if defined, indicates that the memmove routine is available
 *	to move potentially overlapping blocks of memory.  Otherwise you
 *	should use bcopy() or roll your own.
 */
/*#undef	HAS_MEMMOVE		/**/

/* HAS_MEMSET
 *	This symbol, if defined, indicates that the memset routine is available
 *	to set a block of memory to a character.  If undefined, roll your own.
 */
#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_MSG
 *	This symbol, if defined, indicates that the entire msg*(2) library is
 *	supported.
 */
/*#undef	HAS_MSG		/**/

/* HAS_MSGCTL
 *	This symbol, if defined, indicates that the msgctl() routine is
 *	available to control message passing.
 */
/*#undef	HAS_MSGCTL		/**/

/* HAS_MSGGET
 *	This symbol, if defined, indicates that the msgget() routine is
 *	available to get messages.
 */
/*#undef	HAS_MSGGET		/**/

/* HAS_MSGRCV
 *	This symbol, if defined, indicates that the msgrcv() routine is
 *	available to receive messages.
 */
/*#undef	HAS_MSGRCV		/**/

/* HAS_MSGSND
 *	This symbol, if defined, indicates that the msgsnd() routine is
 *	available to send messages.
 */
/*#undef	HAS_MSGSND		/**/

/* HAS_NDBM
 *	This symbol, if defined, indicates that ndbm.h exists and should
 *	be included.
 */
/*#undef	HAS_NDBM		/**/

/* HAS_ODBM
 *	This symbol, if defined, indicates that dbm.h exists and should
 *	be included.
 */
/*#undef	HAS_ODBM		/**/

/* HAS_OPEN3
 *	This manifest constant lets the C program know that the three
 *	argument form of open(2) is available.
 */
#define	HAS_OPEN3		/**/

/* HAS_READDIR
 *	This symbol, if defined, indicates that the readdir routine is available
 *	from the C library to read directories.
 */
#define	HAS_READDIR		/**/

/* 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_REWINDDIR
 *	This symbol, if defined, indicates that the rewindir routine is
 *	available to rewind directories.
 */
#define	HAS_REWINDDIR		/**/

/* 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_SEEKDIR
 *	This symbol, if defined, indicates that the seekdir routine is
 *	available to seek into directories.
 */
#define	HAS_SEEKDIR		/**/

/* HAS_SELECT
 *	This symbol, if defined, indicates that the select() subroutine
 *	exists.
 */
/*#undef	HAS_SELECT	/**/

/* HAS_SEM
 *	This symbol, if defined, indicates that the entire sem*(2) library is
 *	supported.
 */
/*#undef	HAS_SEM		/**/

/* HAS_SEMCTL
 *	This symbol, if defined, indicates that the semctl() routine is
 *	available to control semaphores.
 */
/*#undef	HAS_SEMCTL		/**/

/* HAS_SEMGET
 *	This symbol, if defined, indicates that the semget() routine is
 *	available to get semaphores ids.
 */
/*#undef	HAS_SEMGET		/**/

/* HAS_SEMOP
 *	This symbol, if defined, indicates that the semop() routine is
 *	available to perform semaphore operations.
 */
/*#undef	HAS_SEMOP		/**/

/* 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_SETPGRP
 *	This symbol, if defined, indicates that the setpgrp() routine is
 *	available to set the current process group.
 */
/*#undef	HAS_SETPGRP		/**/

/* 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 program.
 */
/* HAS_SETRESGID
 *	This symbol, if defined, indicates that the setresgid routine is
 *	available to change the real, effective and saved gid of the current
 *	program.
 */
/*#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 program.
 */
/* HAS_SETRESUID
 *	This symbol, if defined, indicates that the setresuid routine is