h2xs.1

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.

.\" Automatically generated by Pod::Man 2.16 (Pod::Simple 3.05)
.\"
.\" Standard preamble:
.\" ========================================================================
.de Sh \" Subsection heading
.br
.if t .Sp
.ne 5
.PP
\fB\\$1\fR
.PP
..
.de Sp \" Vertical space (when we can't use .PP)
.if t .sp .5v
.if n .sp
..
.de Vb \" Begin verbatim text
.ft CW
.nf
.ne \\$1
..
.de Ve \" End verbatim text
.ft R
.fi
..
.\" Set up some character translations and predefined strings.  \*(-- will
.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left
.\" double quote, and \*(R" will give a right double quote.  \*(C+ will
.\" give a nicer C++.  Capital omega is used to do unbreakable dashes and
.\" therefore won't be available.  \*(C` and \*(C' expand to `' in nroff,
.\" nothing in troff, for use with C<>.
.tr \(*W-
.ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p'
.ie n \{\
.    ds -- \(*W-
.    ds PI pi
.    if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch
.    if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\"  diablo 12 pitch
.    ds L" ""
.    ds R" ""
.    ds C` ""
.    ds C' ""
'br\}
.el\{\
.    ds -- \|\(em\|
.    ds PI \(*p
.    ds L" ``
.    ds R" ''
'br\}
.\"
.\" Escape single quotes in literal strings from groff's Unicode transform.
.ie \n(.g .ds Aq \(aq
.el       .ds Aq '
.\"
.\" If the F register is turned on, we'll generate index entries on stderr for
.\" titles (.TH), headers (.SH), subsections (.Sh), items (.Ip), and index
.\" entries marked with X<> in POD.  Of course, you'll have to process the
.\" output yourself in some meaningful fashion.
.ie \nF \{\
.    de IX
.    tm Index:\\$1\t\\n%\t"\\$2"
..
.    nr % 0
.    rr F
.\}
.el \{\
.    de IX
..
.\}
.\"
.\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2).
.\" Fear.  Run.  Save yourself.  No user-serviceable parts.
.    \" fudge factors for nroff and troff
.if n \{\
.    ds #H 0
.    ds #V .8m
.    ds #F .3m
.    ds #[ \f1
.    ds #] \fP
.\}
.if t \{\
.    ds #H ((1u-(\\\\n(.fu%2u))*.13m)
.    ds #V .6m
.    ds #F 0
.    ds #[ \&
.    ds #] \&
.\}
.    \" simple accents for nroff and troff
.if n \{\
.    ds ' \&
.    ds ` \&
.    ds ^ \&
.    ds , \&
.    ds ~ ~
.    ds /
.\}
.if t \{\
.    ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u"
.    ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u'
.    ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u'
.    ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u'
.    ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u'
.    ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u'
.\}
.    \" troff and (daisy-wheel) nroff accents
.ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V'
.ds 8 \h'\*(#H'\(*b\h'-\*(#H'
.ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#]
.ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H'
.ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u'
.ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#]
.ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#]
.ds ae a\h'-(\w'a'u*4/10)'e
.ds Ae A\h'-(\w'A'u*4/10)'E
.    \" corrections for vroff
.if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u'
.if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u'
.    \" for low resolution devices (crt and lpr)
.if \n(.H>23 .if \n(.V>19 \
\{\
.    ds : e
.    ds 8 ss
.    ds o a
.    ds d- d\h'-1'\(ga
.    ds D- D\h'-1'\(hy
.    ds th \o'bp'
.    ds Th \o'LP'
.    ds ae ae
.    ds Ae AE
.\}
.rm #[ #] #H #V #F C
.\" ========================================================================
.\"
.IX Title "H2XS 1"
.TH H2XS 1 "2008-01-23" "perl v5.10.0" "Perl Programmers Reference Guide"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
h2xs \- convert .h C header files to Perl extensions
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
\&\fBh2xs\fR [\fB\s-1OPTIONS\s0\fR ...] [headerfile ... [extra_libraries]]
.PP
\&\fBh2xs\fR \fB\-h\fR|\fB\-?\fR|\fB\-\-help\fR
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
\&\fIh2xs\fR builds a Perl extension from C header files.  The extension
will include functions which can be used to retrieve the value of any
#define statement which was in the C header files.
.PP
The \fImodule_name\fR will be used for the name of the extension.  If
module_name is not supplied then the name of the first header file
will be used, with the first character capitalized.
.PP
If the extension might need extra libraries, they should be included
here.  The extension Makefile.PL will take care of checking whether
the libraries actually exist and how they should be loaded.  The extra
libraries should be specified in the form \-lm \-lposix, etc, just as on
the cc command line.  By default, the Makefile.PL will search through
the library path determined by Configure.  That path can be augmented
by including arguments of the form \fB\-L/another/library/path\fR in the
extra-libraries argument.
.PP
In spite of its name, \fIh2xs\fR may also be used to create a skeleton pure
Perl module. See the \fB\-X\fR option.
.SH "OPTIONS"
.IX Header "OPTIONS"
.IP "\fB\-A\fR, \fB\-\-omit\-autoload\fR" 5
.IX Item "-A, --omit-autoload"
Omit all autoload facilities.  This is the same as \fB\-c\fR but also
removes the \f(CW\*(C`use\ AutoLoader\*(C'\fR statement from the .pm file.
.IP "\fB\-B\fR, \fB\-\-beta\-version\fR" 5
.IX Item "-B, --beta-version"
Use an alpha/beta style version number.  Causes version number to
be \*(L"0.00_01\*(R" unless \fB\-v\fR is specified.
.IP "\fB\-C\fR, \fB\-\-omit\-changes\fR" 5
.IX Item "-C, --omit-changes"
Omits creation of the \fIChanges\fR file, and adds a \s-1HISTORY\s0 section to
the \s-1POD\s0 template.
.IP "\fB\-F\fR, \fB\-\-cpp\-flags\fR=\fIaddflags\fR" 5
.IX Item "-F, --cpp-flags=addflags"
Additional flags to specify to C preprocessor when scanning header for
function declarations.  Writes these options in the generated \fIMakefile.PL\fR
too.
.IP "\fB\-M\fR, \fB\-\-func\-mask\fR=\fIregular expression\fR" 5
.IX Item "-M, --func-mask=regular expression"
selects functions/macros to process.
.IP "\fB\-O\fR, \fB\-\-overwrite\-ok\fR" 5
.IX Item "-O, --overwrite-ok"
Allows a pre-existing extension directory to be overwritten.
.IP "\fB\-P\fR, \fB\-\-omit\-pod\fR" 5
.IX Item "-P, --omit-pod"
Omit the autogenerated stub \s-1POD\s0 section.
.IP "\fB\-X\fR, \fB\-\-omit\-XS\fR" 5
.IX Item "-X, --omit-XS"
Omit the \s-1XS\s0 portion. Used to generate a skeleton pure Perl module.
\&\f(CW\*(C`\-c\*(C'\fR and \f(CW\*(C`\-f\*(C'\fR are implicitly enabled.
.IP "\fB\-a\fR, \fB\-\-gen\-accessors\fR" 5
.IX Item "-a, --gen-accessors"
Generate an accessor method for each element of structs and unions. The
generated methods are named after the element name; will return the current
value of the element if called without additional arguments; and will set
the element to the supplied value (and return the new value) if called with
an additional argument. Embedded structures and unions are returned as a
pointer rather than the complete structure, to facilitate chained calls.
.Sp
These methods all apply to the Ptr type for the structure; additionally
two methods are constructed for the structure type itself, \f(CW\*(C`_to_ptr\*(C'\fR
which returns a Ptr type pointing to the same structure, and a \f(CW\*(C`new\*(C'\fR
method to construct and return a new structure, initialised to zeroes.
.IP "\fB\-b\fR, \fB\-\-compat\-version\fR=\fIversion\fR" 5
.IX Item "-b, --compat-version=version"
Generates a .pm file which is backwards compatible with the specified
perl version.
.Sp
For versions < 5.6.0, the changes are.
    \- no use of 'our' (uses 'use vars' instead)
    \- no 'use warnings'
.Sp
Specifying a compatibility version higher than the version of perl you
are using to run h2xs will have no effect.  If unspecified h2xs will default
to compatibility with the version of perl you are using to run h2xs.
.IP "\fB\-c\fR, \fB\-\-omit\-constant\fR" 5
.IX Item "-c, --omit-constant"
Omit \f(CW\*(C`constant()\*(C'\fR from the .xs file and corresponding specialised
\&\f(CW\*(C`AUTOLOAD\*(C'\fR from the .pm file.
.IP "\fB\-d\fR, \fB\-\-debugging\fR" 5
.IX Item "-d, --debugging"
Turn on debugging messages.
.IP "\fB\-e\fR, \fB\-\-omit\-enums\fR=[\fIregular expression\fR]" 5
.IX Item "-e, --omit-enums=[regular expression]"
If \fIregular expression\fR is not given, skip all constants that are defined in
a C enumeration. Otherwise skip only those constants that are defined in an
enum whose name matches \fIregular expression\fR.
.Sp
Since \fIregular expression\fR is optional, make sure that this switch is followed
by at least one other switch if you omit \fIregular expression\fR and have some
pending arguments such as header-file names. This is ok:
.Sp
.Vb 1
\&    h2xs \-e \-n Module::Foo foo.h
.Ve
.Sp
This is not ok:
.Sp
.Vb 1
\&    h2xs \-n Module::Foo \-e foo.h
.Ve
.Sp
In the latter, foo.h is taken as \fIregular expression\fR.
.IP "\fB\-f\fR, \fB\-\-force\fR" 5
.IX Item "-f, --force"
Allows an extension to be created for a header even if that header is
not found in standard include directories.
.IP "\fB\-g\fR, \fB\-\-global\fR" 5
.IX Item "-g, --global"
Include code for safely storing static data in the .xs file.
Extensions that do no make use of static data can ignore this option.
.IP "\fB\-h\fR, \fB\-?\fR, \fB\-\-help\fR" 5
.IX Item "-h, -?, --help"
Print the usage, help and version for this h2xs and exit.
.IP "\fB\-k\fR, \fB\-\-omit\-const\-func\fR" 5
.IX Item "-k, --omit-const-func"
For function arguments declared as \f(CW\*(C`const\*(C'\fR, omit the const attribute in the
generated \s-1XS\s0 code.
.IP "\fB\-m\fR, \fB\-\-gen\-tied\-var\fR" 5
.IX Item "-m, --gen-tied-var"
\&\fBExperimental\fR: for each variable declared in the header file(s), declare
a perl variable of the same name magically tied to the C variable.
.IP "\fB\-n\fR, \fB\-\-name\fR=\fImodule_name\fR" 5
.IX Item "-n, --name=module_name"
Specifies a name to be used for the extension, e.g., \-n\ \s-1RPC::DCE\s0
.IP "\fB\-o\fR, \fB\-\-opaque\-re\fR=\fIregular expression\fR" 5
.IX Item "-o, --opaque-re=regular expression"
Use \*(L"opaque\*(R" data type for the C types matched by the regular
expression, even if these types are \f(CW\*(C`typedef\*(C'\fR\-equivalent to types
from typemaps.  Should not be used without \fB\-x\fR.
.Sp