1XSUBPP(1)              Perl Programmers Reference Guide              XSUBPP(1)
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NAME

6       xsubpp - compiler to convert Perl XS code into C code
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SYNOPSIS

9       xsubpp [-v] [-except] [-s pattern] [-prototypes] [-noversioncheck]
10       [-nolinenumbers] [-nooptimize] [-typemap typemap] [-output filename]...
11       file.xs
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DESCRIPTION

14       This compiler is typically run by the makefiles created by
15       ExtUtils::MakeMaker.
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17       xsubpp will compile XS code into C code by embedding the constructs
18       necessary to let C functions manipulate Perl values and creates the
19       glue necessary to let Perl access those functions.  The compiler uses
20       typemaps to determine how to map C function parameters and variables to
21       Perl values.
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23       The compiler will search for typemap files called typemap.  It will use
24       the following search path to find default typemaps, with the rightmost
25       typemap taking precedence.
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27               ../../../typemap:../../typemap:../typemap:typemap
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29       It will also use a default typemap installed as "ExtUtils::typemap".
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OPTIONS

32       Note that the "XSOPT" MakeMaker option may be used to add these options
33       to any makefiles generated by MakeMaker.
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35       -hiertype
36            Retains '::' in type names so that C++ hierarchical types can be
37            mapped.
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39       -except
40            Adds exception handling stubs to the C code.
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42       -typemap typemap
43            Indicates that a user-supplied typemap should take precedence over
44            the default typemaps.  This option may be used multiple times,
45            with the last typemap having the highest precedence.
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47       -output filename
48            Specifies the name of the output file to generate.  If no file is
49            specified, output will be written to standard output.
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51       -v   Prints the xsubpp version number to standard output, then exits.
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53       -prototypes
54            By default xsubpp will not automatically generate prototype code
55            for all xsubs. This flag will enable prototypes.
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57       -noversioncheck
58            Disables the run time test that determines if the object file
59            (derived from the ".xs" file) and the ".pm" files have the same
60            version number.
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62       -nolinenumbers
63            Prevents the inclusion of `#line' directives in the output.
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65       -nooptimize
66            Disables certain optimizations.  The only optimization that is
67            currently affected is the use of targets by the output C code (see
68            perlguts).  This may significantly slow down the generated code,
69            but this is the way xsubpp of 5.005 and earlier operated.
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71       -noinout
72            Disable recognition of "IN", "OUT_LIST" and "INOUT_LIST"
73            declarations.
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75       -noargtypes
76            Disable recognition of ANSI-like descriptions of function
77            signature.
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79       -C++ Currently doesn't do anything at all.  This flag has been a no-op
80            for many versions of perl, at least as far back as perl5.003_07.
81            It's allowed here for backwards compatibility.
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ENVIRONMENT

84       No environment variables are used.
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AUTHOR

87       Originally by Larry Wall.  Turned into the "ExtUtils::ParseXS" module
88       by Ken Williams.
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MODIFICATION HISTORY

91       See the file Changes.
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SEE ALSO

94       perl(1), perlxs(1), perlxstut(1), ExtUtils::ParseXS
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98perl v5.10.1                      2017-03-22                         XSUBPP(1)
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