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ExtUtils::Embed(3pm)   Perl Programmers Reference Guide   ExtUtils::Embed(3pm)

NAME
       ExtUtils::Embed - Utilities for embedding Perl in C/C++ applications

SYNOPSIS
        perl -MExtUtils::Embed -e xsinit
        perl -MExtUtils::Embed -e ccopts
        perl -MExtUtils::Embed -e ldopts

DESCRIPTION
       ExtUtils::Embed provides utility functions for embedding a Perl
       interpreter and extensions in your C/C++ applications.  Typically, an
       application Makefile will invoke ExtUtils::Embed functions while
       building your application.

@EXPORT
       ExtUtils::Embed exports the following functions:

       xsinit(), ldopts(), ccopts(), perl_inc(), ccflags(), ccdlflags(),
       xsi_header(), xsi_protos(), xsi_body()

FUNCTIONS
       xsinit()
           Generate C/C++ code for the XS initializer function.

           When invoked as "`perl -MExtUtils::Embed -e xsinit --`" the
           following options are recognized:

           -o <output filename> (Defaults to perlxsi.c)

           -o STDOUT will print to STDOUT.

           -std (Write code for extensions that are linked with the current
           Perl.)

           Any additional arguments are expected to be names of modules to
           generate code for.

           When invoked with parameters the following are accepted and
           optional:

           "xsinit($filename,$std,[@modules])"

           Where,

           $filename is equivalent to the -o option.

           $std is boolean, equivalent to the -std option.

           [@modules] is an array ref, same as additional arguments mentioned
           above.

       Examples
            perl -MExtUtils::Embed -e xsinit -- -o xsinit.c Socket

           This will generate code with an xs_init function that glues the
           perl Socket::bootstrap function to the C boot_Socket function and
           writes it to a file named xsinit.c.

           Note that DynaLoader is a special case where it must call
           boot_DynaLoader directly.

            perl -MExtUtils::Embed -e xsinit

           This will generate code for linking with DynaLoader and each static
           extension found in $Config{static_ext}.  The code is written to the
           default file name perlxsi.c.

            perl -MExtUtils::Embed -e xsinit -- -o xsinit.c -std DBI DBD::Oracle

           Here, code is written for all the currently linked extensions along
           with code for DBI and DBD::Oracle.

           If you have a working DynaLoader then there is rarely any need to
           statically link in any other extensions.

       ldopts()
           Output arguments for linking the Perl library and extensions to
           your application.

           When invoked as "`perl -MExtUtils::Embed -e ldopts --`" the
           following options are recognized:

           -std

           Output arguments for linking the Perl library and any extensions
           linked with the current Perl.

           -I <path1:path2>

           Search path for ModuleName.a archives.  Default path is @INC.
           Library archives are expected to be found as
           /some/path/auto/ModuleName/ModuleName.a For example, when looking
           for Socket.a relative to a search path, we should find
           auto/Socket/Socket.a

           When looking for DBD::Oracle relative to a search path, we should
           find auto/DBD/Oracle/Oracle.a

           Keep in mind that you can always supply /my/own/path/ModuleName.a
           as an additional linker argument.

           --  <list of linker args>

           Additional linker arguments to be considered.

           Any additional arguments found before the -- token are expected to
           be names of modules to generate code for.

           When invoked with parameters the following are accepted and
           optional:

           "ldopts($std,[@modules],[@link_args],$path)"

           Where:

           $std is boolean, equivalent to the -std option.

           [@modules] is equivalent to additional arguments found before the
           -- token.

           [@link_args] is equivalent to arguments found after the -- token.

           $path is equivalent to the -I option.

           In addition, when ldopts is called with parameters, it will return
           the argument string rather than print it to STDOUT.

       Examples
            perl -MExtUtils::Embed -e ldopts

           This will print arguments for linking with libperl and extensions
           found in $Config{static_ext}.  This includes libraries found in
           $Config{libs} and the first ModuleName.a library for each extension
           that is found by searching @INC or the path specified by the -I
           option.  In addition, when ModuleName.a is found, additional linker
           arguments are picked up from the extralibs.ld file in the same
           directory.

            perl -MExtUtils::Embed -e ldopts -- -std Socket

           This will do the same as the above example, along with printing
           additional arguments for linking with the Socket extension.

            perl -MExtUtils::Embed -e ldopts -- -std Msql -- -L/usr/msql/lib -lmsql

           Any arguments after the second '--' token are additional linker
           arguments that will be examined for potential conflict.  If there
           is no conflict, the additional arguments will be part of the
           output.

       perl_inc()
           For including perl header files this function simply prints:

            -I$Config{archlibexp}/CORE

           So, rather than having to say:

            perl -MConfig -e 'print "-I$Config{archlibexp}/CORE"'

           Just say:

            perl -MExtUtils::Embed -e perl_inc

       ccflags(), ccdlflags()
           These functions simply print $Config{ccflags} and
           $Config{ccdlflags}

       ccopts()
           This function combines perl_inc(), ccflags() and ccdlflags() into
           one.

       xsi_header()
           This function simply returns a string defining the same EXTERN_C
           macro as perlmain.c along with #including perl.h and EXTERN.h.

       xsi_protos(@modules)
           This function returns a string of boot_$ModuleName prototypes for
           each @modules.

       xsi_body(@modules)
           This function returns a string of calls to newXS() that glue the
           module bootstrap function to boot_ModuleName for each @modules.

           xsinit() uses the xsi_* functions to generate most of its code.

EXAMPLES
       For examples on how to use ExtUtils::Embed for building C/C++
       applications with embedded perl, see perlembed.

SEE ALSO
       perlembed

AUTHOR
       Doug MacEachern <dougm@osf.org>

       Based on ideas from Tim Bunce <Tim.Bunce@ig.co.uk> and minimod.pl by
       Andreas Koenig <k@anna.in-berlin.de> and Tim Bunce.

perl v5.12.1                      2010-04-26              ExtUtils::Embed(3pm)
 

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Gedruckt am: 28.06.2017 05:39 GMT+0200 (2017-06-28T05:39:37+02:00)