NAME
    xsubpp - compiler to convert Perl XS code into C code

SYNOPSIS
    xsubpp [-v] [-C++] [-except] [-s pattern] [-prototypes] [-nover-
    sioncheck] [-nolinenumbers] [-nooptimize] [-typemap typemap] ...
    file.xs

DESCRIPTION
    This compiler is typically run by the makefiles created by ExtU-
    tils::MakeMaker.

    xsubpp will compile XS code into C code by embedding the constructs
    necessary to let C functions manipulate Perl values and creates the
    glue necessary to let Perl access those functions. The compiler uses
    typemaps to determine how to map C function parameters and variables to
    Perl values.

    The compiler will search for typemap files called typemap. It will use
    the following search path to find default typemaps, with the rightmost
    typemap taking precedence.

     ../../../typemap:../../typemap:../typemap:typemap

OPTIONS
    Note that the "XSOPT" MakeMaker option may be used to add these options
    to any makefiles generated by MakeMaker.

    -C++ Adds ``extern "C"'' to the C code.

    -hiertype
   Retains '::' in type names so that C++ hierachical types can be
   mapped.

    -except
   Adds exception handling stubs to the C code.

    -typemap typemap
   Indicates that a user-supplied typemap should take precedence over
   the default typemaps. This option may be used multiple times,
   with the last typemap having the highest precedence.

    -v  Prints the xsubpp version number to standard output, then exits.

    -prototypes
   By default xsubpp will not automatically generate prototype code
   for all xsubs. This flag will enable prototypes.

    -noversioncheck
   Disables the run time test that determines if the object file
   (derived from the ".xs" file) and the ".pm" files have the same
   version number.

    -nolinenumbers
   Prevents the inclusion of `#line' directives in the output.

    -nooptimize
   Disables certain optimizations. The only optimization that is
   currently affected is the use of targets by the output C code (see
   perlguts). This may significantly slow down the generated code,
   but this is the way xsubpp of 5.005 and earlier operated.

    -noinout
   Disable recognition of "IN", "OUT_LIST" and "INOUT_LIST" declara-
   tions.

    -noargtypes
   Disable recognition of ANSI-like descriptions of function signa-
   ture.

ENVIRONMENT
    No environment variables are used.

AUTHOR
    Larry Wall

MODIFICATION HISTORY
    See the file changes.pod.

SEE ALSO
   perl(1),perlxs(1),perlxstut(1)