Ilya Zakharevich


xsubpp - compiler to convert Perl XS code into C code


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


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.




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


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.


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


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


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.


No environment variables are used.


Larry Wall


See the file changes.pod.


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