config.h

ARM上的如果你对底层感兴趣

 *	This symbol, if defined, indicates that the entire msg*(2) library is
 *	supported (IPC mechanism based on message queues).
 */
/*#define HAS_MSG		/**/

/* HAS_NICE:
 *	This symbol, if defined, indicates that the nice routine is
 *	available.
 */
/*#define HAS_NICE		/**/

/* 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. You may safely
 *	include <poll.h> when this symbol is defined.
 */
/*#define 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.
 */
#define 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.
 */
#define 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_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	/**/

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

/* HAS_SETEGID:
 *	This symbol, if defined, indicates that the setegid routine is available
 *	to change the effective gid of the current program.
 */
/*#define HAS_SETEGID		/**/

/* HAS_SETEUID:
 *	This symbol, if defined, indicates that the seteuid routine is available
 *	to change the effective uid of the current program.
 */
/*#define 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.
 */
/*#define 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(pid, gpid)
 *	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_BSD_SETPGRP:
 *	This symbol, if defined, indicates that setpgrp needs two
 *	arguments whereas USG one needs none.  See also HAS_SETPGID
 *	for a POSIX interface.
 */
/*#define HAS_SETPGRP		/**/
/*#define USE_BSD_SETPGRP	/**/

/* HAS_SETPGRP2:
 *	This symbol, if defined, indicates that the setpgrp2() (as in DG/UX)
 *	routine is available to set the current process group.
 */
/*#define HAS_SETPGRP2		/**/

/* HAS_SETPRIORITY:
 *	This symbol, if defined, indicates that the setpriority routine is
 *	available to set a process's priority.
 */
/*#define 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.
 */
/*#define HAS_SETREGID		/**/
/*#define 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.
 */
/*#define HAS_SETREUID		/**/
/*#define HAS_SETRESUID		/**/

/* HAS_SETRGID:
 *	This symbol, if defined, indicates that the setrgid routine is available
 *	to change the real gid of the current program.
 */
/*#define HAS_SETRGID		/**/

/* HAS_SETRUID:
 *	This symbol, if defined, indicates that the setruid routine is available
 *	to change the real uid of the current program.
 */
/*#define 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.
 */
/*#define 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.
 */
#define Shmat_t void *	/**/
/*#define HAS_SHMAT_PROTOTYPE	/**/

/* USE_STAT_BLOCKS:
 *	This symbol is defined if this system has a stat structure declaring
 *	st_blksize and st_blocks.
 */
/*#define USE_STAT_BLOCKS 	/**/

/* 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	/**/
/*#define 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_STRTOD:
 *	This symbol, if defined, indicates that the strtod routine is
 *	available to provide better numeric string conversion than atof().
 */
#define HAS_STRTOD	/**/

/* HAS_STRTOL:
 *	This symbol, if defined, indicates that the strtol routine is available
 *	to provide better numeric string conversion than atoi() and friends.
 */
#define HAS_STRTOL	/**/

/* HAS_STRTOUL:
 *	This symbol, if defined, indicates that the strtoul routine is
 *	available to provide conversion of strings to unsigned long.
 */
#define HAS_STRTOUL	/**/

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

/* HAS_TRUNCATE:
 *	This symbol, if defined, indicates that the truncate routine is
 *	available to truncate files.
 */
/*#define 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.
 */
/*#define HAS_VFORK	/**/

/* HASVOLATILE:
 *	This symbol, if defined, indicates that this C compiler knows about
 *	the volatile declaration.
 */
#define	HASVOLATILE	/**/
#ifndef HASVOLATILE
#define volatile
#endif

/* HAS_WAIT4:
 *	This symbol, if defined, indicates that wait4() exists.
 */
/*#define HAS_WAIT4	/**/

/* HAS_WAITPID:
 *	This symbol, if defined, indicates that the waitpid routine is
 *	available to wait for child process.
 */
#define 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		/**/

/* EBCDIC:
 *	This symbol, if defined, indicates that this system uses
 *	EBCDIC encoding.
 */
/*#define	EBCDIC 		/**/

/* I_ARPA_INET:
 *	This symbol, if defined, indicates that <arpa/inet.h> exists and should
 *	be included.
 */
#define I_ARPA_INET	/**/

/* 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.
 */
/*#define I_DBM	/**/
#define I_RPCSVC_DBM	/**/

/* 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.
 */