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ExtUtils::CBuilder(3pm)Perl Programmers Reference GuideExtUtils::CBuilder(3pm)

NAME
       ExtUtils::CBuilder - Compile and link C code for Perl modules

SYNOPSIS
         use ExtUtils::CBuilder;

         my $b = ExtUtils::CBuilder->new(%options);
         $obj_file = $b->compile(source => 'MyModule.c');
         $lib_file = $b->link(objects => $obj_file);

DESCRIPTION
       This module can build the C portions of Perl modules by invoking the
       appropriate compilers and linkers in a cross-platform manner.  It was
       motivated by the "Module::Build" project, but may be useful for other
       purposes as well.  However, it is not intended as a general cross-
       platform interface to all your C building needs.  That would have been
       a much more ambitious goal!

METHODS
       new Returns a new "ExtUtils::CBuilder" object.  A "config" parameter
           lets you override "Config.pm" settings for all operations performed
           by the object, as in the following example:

             # Use a different compiler than Config.pm says
             my $b = ExtUtils::CBuilder->new( config =>
                                              { ld => 'gcc' } );

           A "quiet" parameter tells "CBuilder" to not print its "system()"
           commands before executing them:

             # Be quieter than normal
             my $b = ExtUtils::CBuilder->new( quiet => 1 );

       have_compiler
           Returns true if the current system has a working C compiler and
           linker, false otherwise.  To determine this, we actually compile
           and link a sample C library.  The sample will be compiled in the
           system tempdir or, if that fails for some reason, in the current
           directory.

       have_cplusplus
           Just like have_compiler but for C++ instead of C.

       compile
           Compiles a C source file and produces an object file.  The name of
           the object file is returned.  The source file is specified in a
           "source" parameter, which is required; the other parameters listed
           below are optional.

           "object_file"
               Specifies the name of the output file to create.  Otherwise the
               "object_file()" method will be consulted, passing it the name
               of the "source" file.

           "include_dirs"
               Specifies any additional directories in which to search for
               header files.  May be given as a string indicating a single
               directory, or as a list reference indicating multiple
               directories.

           "extra_compiler_flags"
               Specifies any additional arguments to pass to the compiler.
               Should be given as a list reference containing the arguments
               individually, or if this is not possible, as a string
               containing all the arguments together.

           "C++"
               Specifies that the source file is a C++ source file and sets
               appropriate compiler flags

           The operation of this method is also affected by the "archlibexp",
           "cccdlflags", "ccflags", "optimize", and "cc" entries in
           "Config.pm".

       link
           Invokes the linker to produce a library file from object files.  In
           scalar context, the name of the library file is returned.  In list
           context, the library file and any temporary files created are
           returned.  A required "objects" parameter contains the name of the
           object files to process, either in a string (for one object file)
           or list reference (for one or more files).  The following
           parameters are optional:

           lib_file
               Specifies the name of the output library file to create.
               Otherwise the "lib_file()" method will be consulted, passing it
               the name of the first entry in "objects".

           module_name
               Specifies the name of the Perl module that will be created by
               linking.  On platforms that need to do prelinking (Win32, OS/2,
               etc.) this is a required parameter.

           extra_linker_flags
               Any additional flags you wish to pass to the linker.

           On platforms where "need_prelink()" returns true, "prelink()" will
           be called automatically.

           The operation of this method is also affected by the "lddlflags",
           "shrpenv", and "ld" entries in "Config.pm".

       link_executable
           Invokes the linker to produce an executable file from object files.
           In scalar context, the name of the executable file is returned.  In
           list context, the executable file and any temporary files created
           are returned.  A required "objects" parameter contains the name of
           the object files to process, either in a string (for one object
           file) or list reference (for one or more files).  The optional
           parameters are the same as "link" with exception for

           exe_file
               Specifies the name of the output executable file to create.
               Otherwise the "exe_file()" method will be consulted, passing it
               the name of the first entry in "objects".

       object_file
            my $object_file = $b->object_file($source_file);

           Converts the name of a C source file to the most natural name of an
           output object file to create from it.  For instance, on Unix the
           source file foo.c would result in the object file foo.o.

       lib_file
            my $lib_file = $b->lib_file($object_file);

           Converts the name of an object file to the most natural name of a
           output library file to create from it.  For instance, on Mac OS X
           the object file foo.o would result in the library file foo.bundle.

       exe_file
            my $exe_file = $b->exe_file($object_file);

           Converts the name of an object file to the most natural name of an
           executable file to create from it.  For instance, on Mac OS X the
           object file foo.o would result in the executable file foo, and on
           Windows it would result in foo.exe.

       prelink
           On certain platforms like Win32, OS/2, VMS, and AIX, it is
           necessary to perform some actions before invoking the linker.  The
           "ExtUtils::Mksymlists" module does this, writing files used by the
           linker during the creation of shared libraries for dynamic
           extensions.  The names of any files written will be returned as a
           list.

           Several parameters correspond to
           "ExtUtils::Mksymlists::Mksymlists()" options, as follows:

               Mksymlists()   prelink()          type
              -------------|-------------------|-------------------
               NAME        |  dl_name          | string (required)
               DLBASE      |  dl_base          | string
               FILE        |  dl_file          | string
               DL_VARS     |  dl_vars          | array reference
               DL_FUNCS    |  dl_funcs         | hash reference
               FUNCLIST    |  dl_func_list     | array reference
               IMPORTS     |  dl_imports       | hash reference
               VERSION     |  dl_version       | string

           Please see the documentation for "ExtUtils::Mksymlists" for the
           details of what these parameters do.

       need_prelink
           Returns true on platforms where "prelink()" should be called during
           linking, and false otherwise.

       extra_link_args_after_prelink
           Returns list of extra arguments to give to the link command; the
           arguments are the same as for prelink(), with addition of array
           reference to the results of prelink(); this reference is indexed by
           key "prelink_res".

TO DO
       Currently this has only been tested on Unix and doesn't contain any of
       the Windows-specific code from the "Module::Build" project.  I'll do
       that next.

HISTORY
       This module is an outgrowth of the "Module::Build" project, to which
       there have been many contributors.  Notably, Randy W. Sims submitted
       lots of code to support 3 compilers on Windows and helped with various
       other platform-specific issues.  Ilya Zakharevich has contributed fixes
       for OS/2; John E. Malmberg and Peter Prymmer have done likewise for
       VMS.

AUTHOR
       Ken Williams, kwilliams@cpan.org

COPYRIGHT
       Copyright (c) 2003-2005 Ken Williams.  All rights reserved.

       This library is free software; you can redistribute it and/or modify it
       under the same terms as Perl itself.

SEE ALSO
       perl(1), Module::Build(3)

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

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