CONTENTS

• NAME
• SYNOPSIS
• DESCRIPTION
• OPTIONS
• ENVIRONMENT
• AUTHOR
• MODIFICATION HISTORY
• SEE ALSO

#NAME

xsubpp - compiler to convert Perl XS code into C code

#SYNOPSIS

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

#DESCRIPTION

This compiler is typically run by the makefiles created byExtUtils::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 calledtypemap. It will use the following search path to find default typemaps, with the rightmost typemap taking precedence.

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

#OPTIONS

Note that theXSOPT MakeMaker option may be used to add these options to any makefiles generated by MakeMaker.

#-C++

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

#-csuffix csuffix

Set the suffix used for the generated C or C++ code. Defaults to '.c' (even with-C++), but some platforms might want to have e.g. '.cpp'. Don't forget the '.' from the front.

#-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 thexsubpp version number to standard output, then exits.

#-prototypes

By defaultxsubpp 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 oftargets by the output C code (seeperlguts). This may significantly slow down the generated code, but this is the wayxsubpp of 5.005 and earlier operated.

#-noinout

Disable recognition ofIN,OUT_LIST andINOUT_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 filechanges.pod.

#SEE ALSO

perl(1), perlxs(1), perlxstut(1)

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