+/* 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.
+ */
+#$d_stdiobase USE_STDIO_BASE /**/
+#ifdef USE_STDIO_BASE
+#define FILE_base(fp) $stdio_base
+#define FILE_bufsiz(fp) $stdio_bufsiz
+#endif
+
+/* HAS_VPRINTF:
+ * This symbol, if defined, indicates that the vprintf routine is available
+ * to printf with a pointer to an argument list. If unavailable, you
+ * may need to write your own, probably in terms of _doprnt().
+ */
+/* USE_CHAR_VSPRINTF:
+ * This symbol is defined if this system has vsprintf() returning type
+ * (char*). The trend seems to be to declare it as "int vsprintf()". It
+ * is up to the package author to declare vsprintf correctly based on the
+ * symbol.
+ */
+#$d_vprintf HAS_VPRINTF /**/
+#$d_charvspr USE_CHAR_VSPRINTF /**/
+
+/* DOUBLESIZE:
+ * This symbol contains the size of a double, so that the C preprocessor
+ * can make decisions based on it.
+ */
+#define DOUBLESIZE $doublesize /**/
+
+/* I_TIME:
+ * This symbol, if defined, indicates to the C program that it should
+ * include <time.h>.
+ */
+/* I_SYS_TIME:
+ * This symbol, if defined, indicates to the C program that it should
+ * include <sys/time.h>.
+ */
+/* I_SYS_TIME_KERNEL:
+ * This symbol, if defined, indicates to the C program that it should
+ * include <sys/time.h> with KERNEL defined.
+ */
+#$i_time I_TIME /**/
+#$i_systime I_SYS_TIME /**/
+#$i_systimek I_SYS_TIME_KERNEL /**/
+
+/* 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 $rd_nodata
+#$d_eofnblk EOF_NONBLOCK
+
+/* PTRSIZE:
+ * This symbol contains the size of a pointer, so that the C preprocessor
+ * can make decisions based on it. It will be sizeof(void *) if
+ * the compiler supports (void *); otherwise it will be
+ * sizeof(char *).
+ */
+#define PTRSIZE $ptrsize /**/
+
+/* Drand01:
+ * This macro is to be used to generate uniformly distributed
+ * random numbers over the range [0., 1.[. You may have to supply
+ * an 'extern double drand48();' in your program since SunOS 4.1.3
+ * doesn't provide you with anything relevant in it's headers.
+ * See HAS_DRAND48_PROTO.
+ */
+/* Rand_seed_t:
+ * This symbol defines the type of the argument of the
+ * random seed function.
+ */
+/* seedDrand01:
+ * This symbol defines the macro to be used in seeding the
+ * random number generator (see Drand01).
+ */
+/* RANDBITS:
+ * This symbol indicates how many bits are produced by the
+ * function used to generate normalized random numbers.
+ * Values include 15, 16, 31, and 48.
+ */
+#define Drand01() $drand01 /**/
+#define Rand_seed_t $randseedtype /**/
+#define seedDrand01(x) $seedfunc((Rand_seed_t)x) /**/
+#define RANDBITS $randbits /**/
+
+/* 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 $ssizetype /* signed count of bytes */
+
+/* EBCDIC:
+ * This symbol, if defined, indicates that this system uses
+ * EBCDIC encoding.
+ */
+#$ebcdic EBCDIC /**/
+
+/* OSNAME:
+ * This symbol contains the name of the operating system, as determined
+ * by Configure. You shouldn't rely on it too much; the specific
+ * feature tests from Configure are generally more reliable.
+ */
+#define OSNAME "$osname" /**/
+
+/* CAT2:
+ * This macro catenates 2 tokens together.
+ */
+/* STRINGIFY:
+ * This macro surrounds its token with double quotes.
+ */
+#if $cpp_stuff == 1
+#define CAT2(a,b)a/**/b
+#define STRINGIFY(a)"a"
+ /* If you can get stringification with catify, tell me how! */
+#endif
+#if $cpp_stuff == 42
+#define CAT2(a,b)a ## b
+#define StGiFy(a)# a
+#define STRINGIFY(a)StGiFy(a)
+#endif
+#if $cpp_stuff != 1 && $cpp_stuff != 42
+#include "Bletch: How does this C preprocessor catenate tokens?"
+#endif
+
+/* CPPSTDIN:
+ * This symbol contains the first part of the string which will invoke
+ * the C preprocessor on the standard input and produce to standard
+ * output. Typical value of "cc -E" or "/lib/cpp", but it can also
+ * call a wrapper. See CPPRUN.
+ */
+/* CPPMINUS:
+ * This symbol contains the second part of the string which will invoke
+ * the C preprocessor on the standard input and produce to standard
+ * output. This symbol will have the value "-" if CPPSTDIN needs a minus
+ * to specify standard input, otherwise the value is "".
+ */
+/* CPPRUN:
+ * This symbol contains the string which will invoke a C preprocessor on
+ * the standard input and produce to standard output. It needs to end
+ * with CPPLAST, after all other preprocessor flags have been specified.
+ * The main difference with CPPSTDIN is that this program will never be a
+ * pointer to a shell wrapper, i.e. it will be empty if no preprocessor is
+ * available directly to the user. Note that it may well be different from
+ * the preprocessor used to compile the C program.
+ */
+#define CPPSTDIN "$cppstdin"
+#define CPPMINUS "$cppminus"
+#define CPPRUN "$cpprun"
+
+/* HAS_ACCESS:
+ * This manifest constant lets the C program know that the access()
+ * system call is available to check for accessibility using real UID/GID.
+ * (always present on UNIX.)
+ */
+#$d_access HAS_ACCESS /**/
+
+/* HAS_CSH:
+ * This symbol, if defined, indicates that the C-shell exists.
+ */
+/* CSH:
+ * This symbol, if defined, contains the full pathname of csh.
+ */
+#$d_csh HAS_CSH /**/
+#ifdef HAS_CSH
+#define CSH "$full_csh" /**/
+#endif
+
+/* HAS_ENDGRENT:
+ * This symbol, if defined, indicates that the getgrent routine is
+ * available for finalizing sequential access of the group database.
+ */
+#$d_endgrent HAS_ENDGRENT /**/
+
+/* HAS_ENDHOSTENT:
+ * This symbol, if defined, indicates that the endhostent() routine is
+ * available to close whatever was being used for host queries.
+ */
+#$d_endhent HAS_ENDHOSTENT /**/
+
+/* HAS_ENDNETENT:
+ * This symbol, if defined, indicates that the endnetent() routine is
+ * available to close whatever was being used for network queries.
+ */
+#$d_endnent HAS_ENDNETENT /**/
+
+/* HAS_ENDPROTOENT:
+ * This symbol, if defined, indicates that the endprotoent() routine is
+ * available to close whatever was being used for protocol queries.
+ */
+#$d_endpent HAS_ENDPROTOENT /**/
+
+/* HAS_ENDPWENT:
+ * This symbol, if defined, indicates that the getgrent routine is
+ * available for finalizing sequential access of the passwd database.
+ */
+#$d_endpwent HAS_ENDPWENT /**/
+
+/* HAS_ENDSERVENT:
+ * This symbol, if defined, indicates that the endservent() routine is
+ * available to close whatever was being used for service queries.
+ */
+#$d_endsent HAS_ENDSERVENT /**/
+
+/* HAS_GETGRENT:
+ * This symbol, if defined, indicates that the getgrent routine is
+ * available for sequential access of the group database.
+ */
+#$d_getgrent HAS_GETGRENT /**/
+
+/* HAS_GETHOSTBYADDR:
+ * This symbol, if defined, indicates that the gethostbyaddr() routine is
+ * available to look up hosts by their IP addresses.
+ */
+#$d_gethbyaddr HAS_GETHOSTBYADDR /**/
+
+/* HAS_GETHOSTBYNAME:
+ * This symbol, if defined, indicates that the gethostbyname() routine is
+ * available to look up host names in some data base or other.
+ */
+#$d_gethbyname HAS_GETHOSTBYNAME /**/
+
+/* HAS_GETHOSTENT:
+ * This symbol, if defined, indicates that the gethostent() routine is
+ * available to look up host names in some data base or another.
+ */
+#$d_gethent HAS_GETHOSTENT /**/
+
+/* HAS_GETHOSTNAME:
+ * This symbol, if defined, indicates that the C program may use the
+ * gethostname() routine to derive the host name. See also HAS_UNAME
+ * and PHOSTNAME.
+ */
+/* HAS_UNAME:
+ * This symbol, if defined, indicates that the C program may use the
+ * uname() routine to derive the host name. See also HAS_GETHOSTNAME
+ * and PHOSTNAME.
+ */
+/* PHOSTNAME:
+ * This symbol, if defined, indicates the command to feed to the
+ * popen() routine to derive the host name. See also HAS_GETHOSTNAME
+ * and HAS_UNAME. Note that the command uses a fully qualified path,
+ * so that it is safe even if used by a process with super-user
+ * privileges.
+ */
+#$d_gethname HAS_GETHOSTNAME /**/
+#$d_uname HAS_UNAME /**/
+#$d_phostname HAS_PHOSTNAME
+#ifdef HAS_PHOSTNAME
+#define PHOSTNAME "$aphostname" /* How to get the host name */
+#endif
+
+/* HAS_GETNETBYADDR:
+ * This symbol, if defined, indicates that the getnetbyaddr() routine is
+ * available to look up networks by their IP addresses.
+ */
+#$d_getnbyaddr HAS_GETNETBYADDR /**/
+
+/* HAS_GETNETBYNAME:
+ * This symbol, if defined, indicates that the getnetbyname() routine is
+ * available to look up networks by their names.
+ */
+#$d_getnbyname HAS_GETNETBYNAME /**/
+
+/* HAS_GETNETENT:
+ * This symbol, if defined, indicates that the getnetent() routine is
+ * available to look up network names in some data base or another.
+ */
+#$d_getnent HAS_GETNETENT /**/
+
+/* HAS_GETPROTOENT:
+ * This symbol, if defined, indicates that the getprotoent() routine is
+ * available to look up protocols in some data base or another.
+ */
+#$d_getpent HAS_GETPROTOENT /**/
+
+/* HAS_GETPROTOBYNAME:
+ * This symbol, if defined, indicates that the getprotobyname()
+ * routine is available to look up protocols by their name.
+ */
+/* HAS_GETPROTOBYNUMBER:
+ * This symbol, if defined, indicates that the getprotobynumber()
+ * routine is available to look up protocols by their number.
+ */
+#$d_getpbyname HAS_GETPROTOBYNAME /**/
+#$d_getpbynumber HAS_GETPROTOBYNUMBER /**/
+
+/* HAS_GETPWENT:
+ * This symbol, if defined, indicates that the getpwent routine is
+ * available for sequential access of the passwd database.
+ * If this is not available, the older getpw() function may be available.
+ */
+#$d_getpwent HAS_GETPWENT /**/
+
+/* HAS_GETSERVENT:
+ * This symbol, if defined, indicates that the getservent() routine is
+ * available to look up network services in some data base or another.
+ */
+#$d_getsent HAS_GETSERVENT /**/
+
+/* HAS_GETSERVBYNAME:
+ * This symbol, if defined, indicates that the getservbyname()
+ * routine is available to look up services by their name.
+ */
+/* HAS_GETSERVBYPORT:
+ * This symbol, if defined, indicates that the getservbyport()
+ * routine is available to look up services by their port.
+ */
+#$d_getsbyname HAS_GETSERVBYNAME /**/
+#$d_getsbyport HAS_GETSERVBYPORT /**/
+
+/* HAS_HTONL:
+ * This symbol, if defined, indicates that the htonl() routine (and
+ * friends htons() ntohl() ntohs()) are available to do network
+ * order byte swapping.
+ */
+/* HAS_HTONS:
+ * This symbol, if defined, indicates that the htons() routine (and
+ * friends htonl() ntohl() ntohs()) are available to do network
+ * order byte swapping.
+ */
+/* HAS_NTOHL:
+ * This symbol, if defined, indicates that the ntohl() routine (and
+ * friends htonl() htons() ntohs()) are available to do network
+ * order byte swapping.
+ */
+/* HAS_NTOHS:
+ * This symbol, if defined, indicates that the ntohs() routine (and
+ * friends htonl() htons() ntohl()) are available to do network
+ * order byte swapping.
+ */
+#$d_htonl HAS_HTONL /**/
+#$d_htonl HAS_HTONS /**/
+#$d_htonl HAS_NTOHL /**/
+#$d_htonl HAS_NTOHS /**/
+
+/* HAS_LONG_DOUBLE:
+ * This symbol will be defined if the C compiler supports long
+ * doubles.
+ */
+/* LONG_DOUBLESIZE:
+ * This symbol contains the size of a long double, so that the
+ * C preprocessor can make decisions based on it. It is only
+ * defined if the system supports long doubles.
+ */
+#$d_longdbl HAS_LONG_DOUBLE /**/
+#ifdef HAS_LONG_DOUBLE
+#define LONG_DOUBLESIZE $longdblsize /**/
+#endif
+
+/* HAS_LONG_LONG:
+ * This symbol will be defined if the C compiler supports long long.
+ */
+/* LONGLONGSIZE:
+ * This symbol contains the size of a long long, so that the
+ * C preprocessor can make decisions based on it. It is only
+ * defined if the system supports long long.
+ */
+#$d_longlong HAS_LONG_LONG /**/
+#ifdef HAS_LONG_LONG
+#define LONGLONGSIZE $longlongsize /**/
+#endif
+
+/* HAS_MEMCHR:
+ * This symbol, if defined, indicates that the memchr routine is available
+ * to locate characters within a C string.
+ */
+#$d_memchr HAS_MEMCHR /**/
+
+/* HAS_MMAP:
+ * This symbol, if defined, indicates that the mmap system call is
+ * available to map a file into memory.
+ */
+/* Mmap_t:
+ * This symbol holds the return type of the mmap() system call
+ * (and simultaneously the type of the first argument).
+ * Usually set to 'void *' or 'cadd_t'.
+ */
+#$d_mmap HAS_MMAP /**/
+#define Mmap_t $mmaptype /**/
+
+/* HAS_MSG:
+ * This symbol, if defined, indicates that the entire msg*(2) library is
+ * supported (IPC mechanism based on message queues).
+ */
+#$d_msg HAS_MSG /**/
+
+/* HAS_SEM:
+ * This symbol, if defined, indicates that the entire sem*(2) library is
+ * supported.
+ */
+#$d_sem HAS_SEM /**/
+
+/* HAS_SETGRENT:
+ * This symbol, if defined, indicates that the setgrent routine is
+ * available for initializing sequential access of the group database.
+ */
+#$d_setgrent HAS_SETGRENT /**/
+
+/* HAS_SETGROUPS:
+ * This symbol, if defined, indicates that the setgroups() routine is
+ * available to set the list of process groups. If unavailable, multiple
+ * groups are probably not supported.
+ */
+#$d_setgrps HAS_SETGROUPS /**/
+
+/* HAS_SETHOSTENT:
+ * This symbol, if defined, indicates that the sethostent() routine is
+ * available.
+ */
+#$d_sethent HAS_SETHOSTENT /**/
+
+/* HAS_SETNETENT:
+ * This symbol, if defined, indicates that the setnetent() routine is
+ * available.
+ */
+#$d_setnent HAS_SETNETENT /**/
+
+/* HAS_SETPROTOENT:
+ * This symbol, if defined, indicates that the setprotoent() routine is
+ * available.
+ */
+#$d_setpent HAS_SETPROTOENT /**/
+
+/* HAS_SETPWENT:
+ * This symbol, if defined, indicates that the setpwent routine is
+ * available for initializing sequential access of the passwd database.
+ */
+#$d_setpwent HAS_SETPWENT /**/
+
+/* HAS_SETSERVENT:
+ * This symbol, if defined, indicates that the setservent() routine is
+ * available.
+ */
+#$d_setsent HAS_SETSERVENT /**/
+
+/* HAS_SETVBUF:
+ * This symbol, if defined, indicates that the setvbuf routine is
+ * available to change buffering on an open stdio stream.
+ * to a line-buffered mode.
+ */
+#$d_setvbuf HAS_SETVBUF /**/
+
+/* HAS_SHM:
+ * This symbol, if defined, indicates that the entire shm*(2) library is
+ * supported.
+ */
+#$d_shm HAS_SHM /**/
+
+/* 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.
+ */
+/* HAS_MSG_CTRUNC:
+ * This symbol, if defined, indicates that the MSG_CTRUNC is supported.
+ * Checking just with #ifdef might not be enough because this symbol
+ * has been known to be an enum.
+ */
+/* HAS_MSG_DONTROUTE:
+ * This symbol, if defined, indicates that the MSG_DONTROUTE is supported.
+ * Checking just with #ifdef might not be enough because this symbol
+ * has been known to be an enum.
+ */
+/* HAS_MSG_OOB:
+ * This symbol, if defined, indicates that the MSG_OOB is supported.
+ * Checking just with #ifdef might not be enough because this symbol
+ * has been known to be an enum.
+ */
+/* HAS_MSG_PEEK:
+ * This symbol, if defined, indicates that the MSG_PEEK is supported.
+ * Checking just with #ifdef might not be enough because this symbol
+ * has been known to be an enum.
+ */
+/* HAS_MSG_PROXY:
+ * This symbol, if defined, indicates that the MSG_PROXY is supported.
+ * Checking just with #ifdef might not be enough because this symbol
+ * has been known to be an enum.
+ */
+/* HAS_SCM_RIGHTS:
+ * This symbol, if defined, indicates that the SCM_RIGHTS is supported.
+ * Checking just with #ifdef might not be enough because this symbol
+ * has been known to be an enum.
+ */
+/* HAS_SENDMSG:
+ * This symbol, if defined, indicates that the sendmsg is supported
+ * to send messages between sockets. You will also need struct
+ * iovec from <sys/uio.h>, HAS_STRUCT_IOVEC and I_SYSUIO.
+ */
+/* HAS_RECVMSG:
+ * This symbol, if defined, indicates that the recvmsg is supported
+ * to send messages between sockets. You will also need struct
+ * iovec from <sys/uio.h>, HAS_STRUCT_IOVEC and I_SYSUIO.
+ */
+/* HAS_STRUCT_MSGHDR:
+ * This symbol, if defined, indicates that the struct msghdr
+ * (BSD 4.3 or 4.4) is supported. You will also need struct
+ * iovec from <sys/uio.h>, HAS_STRUCT_IOVEC and I_SYSUIO.
+ */
+/* HAS_STRUCT_CMSGHDR:
+ * This symbol, if defined, indicates that the struct cmsghdr
+ * (BSD 4.4) is supported. You will also need struct
+ * iovec from <sys/uio.h>, HAS_STRUCT_IOVEC and I_SYSUIO.
+ */
+#$d_socket HAS_SOCKET /**/
+#$d_sockpair HAS_SOCKETPAIR /**/
+#$d_msg_ctrunc HAS_MSG_CTRUNC /**/
+#$d_msg_dontroute HAS_MSG_DONTROUTE /**/
+#$d_msg_oob HAS_MSG_OOB /**/
+#$d_msg_peek HAS_MSG_PEEK /**/
+#$d_msg_proxy HAS_MSG_PROXY /**/
+#$d_scm_rights HAS_SCM_RIGHTS /**/
+#$d_sendmsg HAS_SENDMSG /**/
+#$d_recvmsg HAS_RECVMSG /**/
+#$d_msghdr_s HAS_STRUCT_MSGHDR /**/
+#$d_cmsghdr_s HAS_STRUCT_CMSGHDR /**/
+
+/* USE_STAT_BLOCKS:
+ * This symbol is defined if this system has a stat structure declaring
+ * st_blksize and st_blocks.
+ */
+#$d_statblks USE_STAT_BLOCKS /**/
+
+/* HAS_STRERROR:
+ * This symbol, if defined, indicates that the strerror routine is
+ * available to translate error numbers to strings. See the writeup
+ * of Strerror() in this file before you try to define your own.
+ */
+/* HAS_SYS_ERRLIST:
+ * This symbol, if defined, indicates that the sys_errlist array is
+ * available to translate error numbers to strings. The extern int
+ * sys_nerr gives the size of that table.
+ */
+/* Strerror:
+ * This preprocessor symbol is defined as a macro if strerror() is
+ * not available to translate error numbers to strings but sys_errlist[]
+ * array is there.
+ */
+#$d_strerror HAS_STRERROR /**/
+#$d_syserrlst HAS_SYS_ERRLIST /**/
+#define Strerror(e) $d_strerrm
+
+/* HAS_UNION_SEMUN:
+ * This symbol, if defined, indicates that the union semun is
+ * defined by including <sys/sem.h>. If not, the user code
+ * probably needs to define it as:
+ * union semun {
+ * int val;
+ * struct semid_ds *buf;
+ * unsigned short *array;
+ * }
+ */
+/* USE_SEMCTL_SEMUN:
+ * This symbol, if defined, indicates that union semun is
+ * used for semctl IPC_STAT.
+ */
+/* USE_SEMCTL_SEMID_DS:
+ * This symbol, if defined, indicates that struct semid_ds * is
+ * used for semctl IPC_STAT.
+ */
+#$d_union_semun HAS_UNION_SEMUN /**/
+#$d_semctl_semun USE_SEMCTL_SEMUN /**/
+#$d_semctl_semid_ds USE_SEMCTL_SEMID_DS /**/
+
+/* HAS_VFORK:
+ * This symbol, if defined, indicates that vfork() exists.
+ */
+#$d_vfork 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 $signal_t /* Signal handler's return type */
+
+/* Groups_t:
+ * This symbol holds the type used for the second argument to
+ * getgroups() and setgropus(). Usually, this is the same as
+ * gidtype (gid_t) , 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() or setgropus()..
+ */
+#if defined(HAS_GETGROUPS) || defined(HAS_SETGROUPS)
+#define Groups_t $groupstype /* Type for 2nd arg to [sg]etgroups() */
+#endif
+
+/* I_GRP:
+ * This symbol, if defined, indicates to the C program that it should
+ * include <grp.h>.
+ */
+/* GRPASSWD:
+ * This symbol, if defined, indicates to the C program that struct group
+ * in <grp.h> contains gr_passwd.
+ */
+#$i_grp I_GRP /**/
+#$d_grpasswd GRPASSWD /**/
+
+/* I_NETDB:
+ * This symbol, if defined, indicates that <netdb.h> exists and
+ * should be included.
+ */
+#$i_netdb I_NETDB /**/
+
+/* 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.
+ */
+/* PWGECOS:
+ * This symbol, if defined, indicates to the C program that struct passwd
+ * contains pw_gecos.
+ */
+/* PWPASSWD:
+ * This symbol, if defined, indicates to the C program that struct passwd
+ * contains pw_passwd.
+ */
+#$i_pwd I_PWD /**/
+#$d_pwquota PWQUOTA /**/
+#$d_pwage PWAGE /**/
+#$d_pwchange PWCHANGE /**/
+#$d_pwclass PWCLASS /**/
+#$d_pwexpire PWEXPIRE /**/
+#$d_pwcomment PWCOMMENT /**/
+#$d_pwgecos PWGECOS /**/
+#$d_pwpasswd PWPASSWD /**/
+
+/* I_SYSUIO:
+ * This symbol, if defined, indicates that <sys/uio.h> exists and
+ * should be included.
+ */
+#$i_sysuio I_SYSUIO /**/
+
+/* 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 $malloctype /**/
+#define Free_t $freetype /**/
+
+/* MYMALLOC:
+ * This symbol, if defined, indicates that we're using our own malloc.
+ */
+#$d_mymalloc MYMALLOC /**/
+
+/* 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 $sig_name_init /**/
+#define SIG_NUM $sig_num_init /**/
+
+/* 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 $defvoidused
+#endif
+#define VOIDFLAGS $voidflags
+#if (VOIDFLAGS & VOIDUSED) != VOIDUSED
+#define void int /* is void to be avoided? */
+#define M_VOID /* Xenix strikes again */
+#endif
+
+/* ARCHLIB:
+ * This variable, if defined, holds the name of the directory in
+ * which the user wants to put architecture-dependent public
+ * library files for $package. It is most often a local directory
+ * such as /usr/local/lib. Programs using this variable must be
+ * prepared to deal with filename expansion. If ARCHLIB is the
+ * same as PRIVLIB, it is not defined, since presumably the
+ * program already searches PRIVLIB.
+ */
+/* ARCHLIB_EXP:
+ * This symbol contains the ~name expanded version of ARCHLIB, to be used
+ * in programs that are not prepared to deal with ~ expansion at run-time.
+ */
+#$d_archlib ARCHLIB "$archlib" /**/
+#$d_archlib ARCHLIB_EXP "$archlibexp" /**/
+
+/* DLSYM_NEEDS_UNDERSCORE:
+ * This symbol, if defined, indicates that we need to prepend an
+ * underscore to the symbol name before calling dlsym(). This only
+ * makes sense if you *have* dlsym, which we will presume is the
+ * case if you're using dl_dlopen.xs.
+ */
+#$d_dlsymun DLSYM_NEEDS_UNDERSCORE /**/
+
+/* HAS_ENDSPENT:
+ * This symbol, if defined, indicates that the endspent system call is
+ * available to finalize the scan of SysV shadow password entries.
+ */
+#$d_endspent HAS_ENDSPENT /**/
+
+/* HAS_FSEEKO:
+ * This symbol, if defined, indicates that the fseeko routine is
+ * available to fseek beyond 32 bits (useful for ILP32 hosts).
+ */
+#$d_fseeko HAS_FSEEKO /**/
+
+/* HAS_FTELLO:
+ * This symbol, if defined, indicates that the ftello routine is
+ * available to ftell from beyond 32 bits (useful for ILP32 hosts).
+ */
+#$d_ftello HAS_FTELLO /**/
+
+/* HAS_GETMNTENT:
+ * This symbol, if defined, indicates that the getmntent routine is
+ * available to iterate through mounted file systems.
+ */
+#$d_getmntent HAS_GETMNTENT /**/
+
+/* HAS_GETSPENT:
+ * This symbol, if defined, indicates that the getspent system call is
+ * available to retrieve SysV shadow password entries sequentially.
+ */
+#$d_getspent HAS_GETSPENT /**/
+
+/* HAS_GETSPNAM:
+ * This symbol, if defined, indicates that the getspnam system call is
+ * available to retrieve SysV shadow password entries by name.
+ */
+#$d_getspnam HAS_GETSPNAM /**/
+
+/* HAS_HASMNTOPT:
+ * This symbol, if defined, indicates that the hasmntopt routine is
+ * available to query the mount options of file systems.
+ */
+#$d_hasmntopt HAS_HASMNTOPT /**/
+
+/* HAS_MADVISE:
+ * This symbol, if defined, indicates that the madvise system call is
+ * available to map a file into memory.
+ */
+#$d_madvise HAS_MADVISE /**/
+
+/* HAS_MPROTECT:
+ * This symbol, if defined, indicates that the mprotect system call is
+ * available to modify the access protection of a memory mapped file.
+ */
+#$d_mprotect HAS_MPROTECT /**/
+
+/* HAS_READV:
+ * This symbol, if defined, indicates that the readv routine is
+ * available to do gather reads. You will also need <sys/uio.h>
+ * and there I_SYSUIO.
+ */
+#$d_readv HAS_READV /**/
+
+/* HAS_SETSPENT:
+ * This symbol, if defined, indicates that the setspent system call is
+ * available to initialize the scan of SysV shadow password entries.
+ */
+#$d_setspent HAS_SETSPENT /**/
+
+/* USE_SFIO:
+ * This symbol, if defined, indicates that sfio should
+ * be used.
+ */
+#$d_sfio USE_SFIO /**/
+
+/* HAS_FSTATFS:
+ * This symbol, if defined, indicates that the fstatfs routine is
+ * available to stat filesystems of file descriptors.
+ */
+/* HAS_STRUCT_STATFS_FLAGS:
+ * This symbol, if defined, indicates that the struct statfs
+ * does have the f_flags member containing the mount flags of
+ * the filesystem holding the file.
+ * This kind of struct statfs is coming from sys/mount.h (BSD),
+ * not from sys/statfs.h (SYSV).
+ */
+#$d_fstatfs HAS_FSTATFS /**/
+#$d_statfsflags HAS_STRUCT_STATFS_FLAGS /**/
+
+/* HAS_FSTATVFS:
+ * This symbol, if defined, indicates that the fstatvfs routine is
+ * available to stat filesystems of file descriptors.
+ */
+#$d_fstatvfs HAS_FSTATVFS /**/
+
+/* HAS_TELLDIR_PROTO:
+ * This symbol, if defined, indicates that the system provides
+ * a prototype for the telldir() function. Otherwise, it is up
+ * to the program to supply one. A good guess is
+ * extern long telldir (DIR*);
+ */
+#$d_telldirproto HAS_TELLDIR_PROTO /**/
+
+/* HAS_WRITEV:
+ * This symbol, if defined, indicates that the writev routine is
+ * available to do scatter writes.
+ */
+#$d_writev HAS_WRITEV /**/
+
+/* HAS_DBMINIT64:
+ * This symbol, if defined, indicates that the dbminit64 routine is
+ * available to open dbm files larger than 2 gigabytes.
+ */
+/* HAS_DBMCLOSE64:
+ * This symbol, if defined, indicates that the dbmclose64 routine is
+ * available to close dbm files larger than 2 gigabytes.
+ */
+/* HAS_FETCH64:
+ * This symbol, if defined, indicates that the fetch64 routine is
+ * available to fetch from dbm files larger than 2 gigabytes.
+ */
+/* HAS_STORE64:
+ * This symbol, if defined, indicates that the store64 routine is
+ * available to store to dbm files larger than 2 gigabytes.
+ */
+/* HAS_DELETE64:
+ * This symbol, if defined, indicates that the delete64 routine is
+ * available to delete from dbm files larger than 2 gigabytes.
+ */
+/* HAS_FIRSTKEY64:
+ * This symbol, if defined, indicates that the firstkey64 routine is
+ * available to firstkey in dbm files larger than 2 gigabytes.
+ */
+/* HAS_NEXTKEY64:
+ * This symbol, if defined, indicates that the nextkey64 routine is
+ * available to nextkey in dbm files larger than 2 gigabytes.
+ */
+#$d_dbminit64 HAS_DBMINIT64 /**/
+#$d_dbmclose64 HAS_DBMCLOSE64 /**/
+#$d_fetch64 HAS_FETCH64 /**/
+#$d_store64 HAS_STORE64 /**/
+#$d_delete64 HAS_DELETE64 /**/
+#$d_firstkey64 HAS_FIRSTKEY64 /**/
+#$d_nextkey64 HAS_NEXTKEY64 /**/
+
+/* USE_DYNAMIC_LOADING:
+ * This symbol, if defined, indicates that dynamic loading of
+ * some sort is available.
+ */
+#$usedl USE_DYNAMIC_LOADING /**/
+
+/* FFLUSH_NULL:
+ * This symbol, if defined, tells that fflush(NULL) does flush
+ * all pending stdio output.
+ */
+/* FFLUSH_ALL:
+ * This symbol, if defined, tells that to flush
+ * all pending stdio output one must loop through all
+ * the stdio file handles stored in an array and fflush them.
+ * Note that if fflushNULL is defined, fflushall will not
+ * even be probed for and will be left undefined.
+ */
+#$fflushNULL FFLUSH_NULL /**/
+#$fflushall FFLUSH_ALL /**/