


XSUBPP(1)        Perl Programmers Reference Guide       XSUBPP(1)


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

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

DESCRIPTION
       This compiler is typically run by the makefiles created by
       the ExtUtils::MakeMaker manpage.

       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.

       -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.




2001-05-24                 perl v5.6.1                          1





XSUBPP(1)        Perl Programmers Reference Guide       XSUBPP(1)


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

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

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

       -noargtypes
            Disable recognition of ANSI-like descriptions of
            function signature.

ENVIRONMENT
       No environment variables are used.

AUTHOR
       Larry Wall

MODIFICATION HISTORY
       See the file changes.pod.

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


























2001-05-24                 perl v5.6.1                          2


