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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.

  -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 the
       perlguts manpage).  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" 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)

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