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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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Created 1996-2024 by Maxim Chirkov

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