config.3

视频监控网络部分的协议ddns,的模块的实现代码,请大家大胆指正.

.Sp
This variable conditionally defines the \f(CW\*(C`HAS_COPYSIGNL\*(C'\fR symbol, which
indicates to the C program that the \fIcopysignl()\fR routine is available.
If aintl is also present we can emulate modfl.
.ie n .IP """d_cplusplus""" 4
.el .IP "\f(CWd_cplusplus\fR" 4
.IX Item "d_cplusplus"
From \fId_cplusplus.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`USE_CPLUSPLUS\*(C'\fR symbol, which
indicates that a \*(C+ compiler was used to compiled Perl and will be
used to compile extensions.
.ie n .IP """d_crypt""" 4
.el .IP "\f(CWd_crypt\fR" 4
.IX Item "d_crypt"
From \fId_crypt.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`CRYPT\*(C'\fR symbol, which
indicates to the C program that the \fIcrypt()\fR routine is available
to encrypt passwords and the like.
.ie n .IP """d_crypt_r""" 4
.el .IP "\f(CWd_crypt_r\fR" 4
.IX Item "d_crypt_r"
From \fId_crypt_r.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_CRYPT_R\*(C'\fR symbol,
which indicates to the C program that the \fIcrypt_r()\fR
routine is available.
.ie n .IP """d_csh""" 4
.el .IP "\f(CWd_csh\fR" 4
.IX Item "d_csh"
From \fId_csh.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`CSH\*(C'\fR symbol, which
indicates to the C program that the C\-shell exists.
.ie n .IP """d_ctermid""" 4
.el .IP "\f(CWd_ctermid\fR" 4
.IX Item "d_ctermid"
From \fId_ctermid.U\fR:
.Sp
This variable conditionally defines \f(CW\*(C`CTERMID\*(C'\fR if \fIctermid()\fR is
available to generate filename for terminal.
.ie n .IP """d_ctermid_r""" 4
.el .IP "\f(CWd_ctermid_r\fR" 4
.IX Item "d_ctermid_r"
From \fId_ctermid_r.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_CTERMID_R\*(C'\fR symbol,
which indicates to the C program that the \fIctermid_r()\fR
routine is available.
.ie n .IP """d_ctime_r""" 4
.el .IP "\f(CWd_ctime_r\fR" 4
.IX Item "d_ctime_r"
From \fId_ctime_r.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_CTIME_R\*(C'\fR symbol,
which indicates to the C program that the \fIctime_r()\fR
routine is available.
.ie n .IP """d_cuserid""" 4
.el .IP "\f(CWd_cuserid\fR" 4
.IX Item "d_cuserid"
From \fId_cuserid.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_CUSERID\*(C'\fR symbol, which
indicates to the C program that the \fIcuserid()\fR routine is available
to get character login names.
.ie n .IP """d_dbl_dig""" 4
.el .IP "\f(CWd_dbl_dig\fR" 4
.IX Item "d_dbl_dig"
From \fId_dbl_dig.U\fR:
.Sp
This variable conditionally defines d_dbl_dig if this system's
header files provide \f(CW\*(C`DBL_DIG\*(C'\fR, which is the number of significant
digits in a double precision number.
.ie n .IP """d_dbminitproto""" 4
.el .IP "\f(CWd_dbminitproto\fR" 4
.IX Item "d_dbminitproto"
From \fId_dbminitproto.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_DBMINIT_PROTO\*(C'\fR symbol,
which indicates to the C program that the system provides
a prototype for the \fIdbminit()\fR function.  Otherwise, it is
up to the program to supply one.
.ie n .IP """d_difftime""" 4
.el .IP "\f(CWd_difftime\fR" 4
.IX Item "d_difftime"
From \fId_difftime.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_DIFFTIME\*(C'\fR symbol, which
indicates to the C program that the \fIdifftime()\fR routine is available.
.ie n .IP """d_dir_dd_fd""" 4
.el .IP "\f(CWd_dir_dd_fd\fR" 4
.IX Item "d_dir_dd_fd"
From \fId_dir_dd_fd.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_DIR_DD_FD\*(C'\fR symbol, which
indicates that the \f(CW\*(C`DIR\*(C'\fR directory stream type contains a member
variable called dd_fd.
.ie n .IP """d_dirfd""" 4
.el .IP "\f(CWd_dirfd\fR" 4
.IX Item "d_dirfd"
From \fId_dirfd.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_DIRFD\*(C'\fR constant,
which indicates to the C program that \fIdirfd()\fR is available
to return the file descriptor of a directory stream.
.ie n .IP """d_dirnamlen""" 4
.el .IP "\f(CWd_dirnamlen\fR" 4
.IX Item "d_dirnamlen"
From \fIi_dirent.U\fR:
.Sp
This variable conditionally defines \f(CW\*(C`DIRNAMLEN\*(C'\fR, which indicates
to the C program that the length of directory entry names is
provided by a d_namelen field.
.ie n .IP """d_dlerror""" 4
.el .IP "\f(CWd_dlerror\fR" 4
.IX Item "d_dlerror"
From \fId_dlerror.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_DLERROR\*(C'\fR symbol, which
indicates to the C program that the \fIdlerror()\fR routine is available.
.ie n .IP """d_dlopen""" 4
.el .IP "\f(CWd_dlopen\fR" 4
.IX Item "d_dlopen"
From \fId_dlopen.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_DLOPEN\*(C'\fR symbol, which
indicates to the C program that the \fIdlopen()\fR routine is available.
.ie n .IP """d_dlsymun""" 4
.el .IP "\f(CWd_dlsymun\fR" 4
.IX Item "d_dlsymun"
From \fId_dlsymun.U\fR:
.Sp
This variable conditionally defines \f(CW\*(C`DLSYM_NEEDS_UNDERSCORE\*(C'\fR, which
indicates that we need to prepend an underscore to the symbol
name before calling \fIdlsym()\fR.
.ie n .IP """d_dosuid""" 4
.el .IP "\f(CWd_dosuid\fR" 4
.IX Item "d_dosuid"
From \fId_dosuid.U\fR:
.Sp
This variable conditionally defines the symbol \f(CW\*(C`DOSUID\*(C'\fR, which
tells the C program that it should insert setuid emulation code
on hosts which have setuid #! scripts disabled.
.ie n .IP """d_drand48_r""" 4
.el .IP "\f(CWd_drand48_r\fR" 4
.IX Item "d_drand48_r"
From \fId_drand48_r.U\fR:
.Sp
This variable conditionally defines the \s-1HAS_DRAND48_R\s0 symbol,
which indicates to the C program that the \fIdrand48_r()\fR
routine is available.
.ie n .IP """d_drand48proto""" 4
.el .IP "\f(CWd_drand48proto\fR" 4
.IX Item "d_drand48proto"
From \fId_drand48proto.U\fR:
.Sp
This variable conditionally defines the \s-1HAS_DRAND48_PROTO\s0 symbol,
which indicates to the C program that the system provides
a prototype for the \fIdrand48()\fR function.  Otherwise, it is
up to the program to supply one.
.ie n .IP """d_dup2""" 4
.el .IP "\f(CWd_dup2\fR" 4
.IX Item "d_dup2"
From \fId_dup2.U\fR:
.Sp
This variable conditionally defines \s-1HAS_DUP2\s0 if \fIdup2()\fR is
available to duplicate file descriptors.
.ie n .IP """d_eaccess""" 4
.el .IP "\f(CWd_eaccess\fR" 4
.IX Item "d_eaccess"
From \fId_eaccess.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_EACCESS\*(C'\fR symbol, which
indicates to the C program that the \fIeaccess()\fR routine is available.
.ie n .IP """d_endgrent""" 4
.el .IP "\f(CWd_endgrent\fR" 4
.IX Item "d_endgrent"
From \fId_endgrent.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_ENDGRENT\*(C'\fR symbol, which
indicates to the C program that the \fIendgrent()\fR routine is available
for sequential access of the group database.
.ie n .IP """d_endgrent_r""" 4
.el .IP "\f(CWd_endgrent_r\fR" 4
.IX Item "d_endgrent_r"
From \fId_endgrent_r.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_ENDGRENT_R\*(C'\fR symbol,
which indicates to the C program that the \fIendgrent_r()\fR
routine is available.
.ie n .IP """d_endhent""" 4
.el .IP "\f(CWd_endhent\fR" 4
.IX Item "d_endhent"
From \fId_endhent.U\fR:
.Sp
This variable conditionally defines \f(CW\*(C`HAS_ENDHOSTENT\*(C'\fR if \fIendhostent()\fR is
available to close whatever was being used for host queries.
.ie n .IP """d_endhostent_r""" 4
.el .IP "\f(CWd_endhostent_r\fR" 4
.IX Item "d_endhostent_r"
From \fId_endhostent_r.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_ENDHOSTENT_R\*(C'\fR symbol,
which indicates to the C program that the \fIendhostent_r()\fR
routine is available.
.ie n .IP """d_endnent""" 4
.el .IP "\f(CWd_endnent\fR" 4
.IX Item "d_endnent"
From \fId_endnent.U\fR:
.Sp
This variable conditionally defines \f(CW\*(C`HAS_ENDNETENT\*(C'\fR if \fIendnetent()\fR is
available to close whatever was being used for network queries.
.ie n .IP """d_endnetent_r""" 4
.el .IP "\f(CWd_endnetent_r\fR" 4
.IX Item "d_endnetent_r"
From \fId_endnetent_r.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_ENDNETENT_R\*(C'\fR symbol,
which indicates to the C program that the \fIendnetent_r()\fR
routine is available.
.ie n .IP """d_endpent""" 4
.el .IP "\f(CWd_endpent\fR" 4
.IX Item "d_endpent"
From \fId_endpent.U\fR:
.Sp
This variable conditionally defines \f(CW\*(C`HAS_ENDPROTOENT\*(C'\fR if \fIendprotoent()\fR is
available to close whatever was being used for protocol queries.
.ie n .IP """d_endprotoent_r""" 4
.el .IP "\f(CWd_endprotoent_r\fR" 4
.IX Item "d_endprotoent_r"
From \fId_endprotoent_r.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_ENDPROTOENT_R\*(C'\fR symbol,
which indicates to the C program that the \fIendprotoent_r()\fR
routine is available.
.ie n .IP """d_endpwent""" 4
.el .IP "\f(CWd_endpwent\fR" 4
.IX Item "d_endpwent"
From \fId_endpwent.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_ENDPWENT\*(C'\fR symbol, which
indicates to the C program that the \fIendpwent()\fR routine is available
for sequential access of the passwd database.
.ie n .IP """d_endpwent_r""" 4
.el .IP "\f(CWd_endpwent_r\fR" 4
.IX Item "d_endpwent_r"
From \fId_endpwent_r.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_ENDPWENT_R\*(C'\fR symbol,
which indicates to the C program that the \fIendpwent_r()\fR
routine is available.
.ie n .IP """d_endsent""" 4
.el .IP "\f(CWd_endsent\fR" 4
.IX Item "d_endsent"
From \fId_endsent.U\fR:
.Sp
This variable conditionally defines \f(CW\*(C`HAS_ENDSERVENT\*(C'\fR if \fIendservent()\fR is
available to close whatever was being used for service queries.
.ie n .IP """d_endservent_r""" 4
.el .IP "\f(CWd_endservent_r\fR" 4
.IX Item "d_endservent_r"
From \fId_endservent_r.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_ENDSERVENT_R\*(C'\fR symbol,
which indicates to the C program that the \fIendservent_r()\fR
routine is available.
.ie n .IP """d_eofnblk""" 4
.el .IP "\f(CWd_eofnblk\fR" 4
.IX Item "d_eofnblk"
From \fInblock_io.U\fR:
.Sp
This variable conditionally defines \f(CW\*(C`EOF_NONBLOCK\*(C'\fR if \f(CW\*(C`EOF\*(C'\fR can be seen
when reading from a non-blocking I/O source.
.ie n .IP """d_eunice""" 4
.el .IP "\f(CWd_eunice\fR" 4
.IX Item "d_eunice"
From \fIGuess.U\fR:
.Sp
This variable conditionally defines the symbols \f(CW\*(C`EUNICE\*(C'\fR and \f(CW\*(C`VAX\*(C'\fR, which
alerts the C program that it must deal with ideosyncracies of \f(CW\*(C`VMS\*(C'\fR.
.ie n .IP """d_faststdio""" 4
.el .IP "\f(CWd_faststdio\fR" 4
.IX Item "d_faststdio"
From \fId_faststdio.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_FAST_STDIO\*(C'\fR symbol,
which indicates to the C program that the \*(L"fast stdio\*(R" is available
to manipulate the stdio buffers directly.
.ie n .IP """d_fchdir""" 4
.el .IP "\f(CWd_fchdir\fR" 4
.IX Item "d_fchdir"
From \fId_fchdir.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_FCHDIR\*(C'\fR symbol, which
indicates to the C program that the \fIfchdir()\fR routine is available.
.ie n .IP """d_fchmod""" 4
.el .IP "\f(CWd_fchmod\fR" 4
.IX Item "d_fchmod"
From \fId_fchmod.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_FCHMOD\*(C'\fR symbol, which
indicates to the C program that the \fIfchmod()\fR routine is available
to change mode of opened files.
.ie n .IP """d_fchown""" 4
.el .IP "\f(CWd_fchown\fR" 4
.IX Item "d_fchown"
From \fId_fchown.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_FCHOWN\*(C'\fR symbol, which
indicates to the C program that the \fIfchown()\fR routine is available
to change ownership of opened files.
.ie n .IP """d_fcntl""" 4
.el .IP "\f(CWd_fcntl\fR" 4
.IX Item "d_fcntl"
From \fId_fcntl.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`HAS_FCNTL\*(C'\fR symbol, and indicates
whether the \fIfcntl()\fR function exists
.ie n .IP """d_fcntl_can_lock""" 4
.el .IP "\f(CWd_fcntl_can_lock\fR" 4
.IX Item "d_fcntl_can_lock"
From \fId_fcntl_can_lock.U\fR:
.Sp
This variable conditionally defines the \f(CW\*(C`FCNTL_CAN_LOCK\*(C'\fR symbol
and indicates whether file locking with \fIfcntl()\fR works.
.ie n .IP """d_fd_macros""" 4
.el .IP "\f(CWd_fd_macros\fR" 4
.IX Item "d_fd_macros"
From \fId_fd_set.U\fR:
.Sp
This variable contains the eventual value of the \f(CW\*(C`HAS_FD_MACROS\*(C'\fR symbol,
which indicates if your C compiler knows about the macros which
manipulate an fd_set.
.ie n .IP """d_fd_set""" 4
.el .IP "\f(CWd_fd_set\fR" 4
.IX Item "d_fd_set"
From \fId_fd_set.U\fR:
.Sp
This variable contains the eventual value of the \f(CW\*(C`HAS_FD_SET\*(C'\fR symbol,
which indicates if your C compiler knows about the fd_set typedef.
.ie n .IP """d_fds_bits""" 4
.el .IP "\f(CWd_fds_bits\fR" 4
.IX Item "d_fds_bits"
From \fId_fd_set.U\fR:
.Sp
This variable contains the eventual value of the \f(CW\*(C`HAS_FDS_BITS\*(C'\fR symbol,
which indicates if your fd_set typedef contains the fds_bits member.
If you have an fd_set typedef, but the dweebs who installed it did
a half-fast job and neglected to provide the macros to manipulate
an fd_set, \f(CW\*(C`HAS_FDS_BITS\*(C'\fR will let us know how to fix the gaffe.
.ie n .IP """d_fgetpos""" 4
.el .IP "\f(CWd_fgetpos\fR" 4
.IX Item "d_fgetpos"
From \fId_fgetpos.U\fR:
.Sp
This variable conditionally defines \f(CW\*(C`HAS_FGETPOS\*(C'\fR if \fIfgetpos()\fR is
available to get the file position indicator.
.ie n .IP """d_finite""" 4
.el .IP "\f(CWd_finite\fR" 4