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xsubpp - compiler to convert Perl XS code into C code
xsubpp [-v] [-C++] [-except] [-s pattern] [-prototypes] [-noversioncheck] [-nolinenumbers] [-nooptimize] [-typemap typemap] ... file.xs
This compiler is typically run by the makefiles created by ExtUtils::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 called typemap. It will use the following search path to find default typemaps, with the rightmost typemap taking precedence.
Note that the
XSOPTMakeMaker option may be used to add these options to any makefiles generated by MakeMaker.
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
.xsfile) and the
.pmfiles have the same version number.
Prevents the inclusion of `#line' directives in the output.
Disables certain optimizations. The only optimization that is currently affected is the use of targets by the output C code (see perlguts). This may significantly slow down the generated code, but this is the way xsubpp of 5.005 and earlier operated.
Disable recognition of
Disable recognition of ANSI-like descriptions of function signature.
No environment variables are used.
See the file changes.pod.
perl(1), perlxs(1), perlxstut(1)