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ExtUtils::Mksymlists(3User Contributed Perl DocumentatiExtUtils::Mksymlists(3)

       ExtUtils::Mksymlists - write linker options files for dynamic extension

           use ExtUtils::Mksymlists;
           Mksymlists({ NAME     => $name ,
                        DL_VARS  => [ $var1, $var2, $var3 ],
                        DL_FUNCS => { $pkg1 => [ $func1, $func2 ],
                                      $pkg2 => [ $func3 ] });

       "ExtUtils::Mksymlists" produces files used by the linker under some OSs during the creation of shared libraries
       for dynamic extensions.  It is normally called from a MakeMaker-generated Makefile when the extension is built.
       The linker option file is generated by calling the function "Mksymlists", which is exported by default from
       "ExtUtils::Mksymlists".  It takes one argument, a list of key-value pairs, in which the following keys are rec-

           This item specifies the name by which the linker knows the extension, which may be different from the name
           of the extension itself (for instance, some linkers add an '_' to the name of the extension).  If it is not
           specified, it is derived from the NAME attribute.  It is presently used only by OS2 and Win32.

           This is identical to the DL_FUNCS attribute available via MakeMaker, from which it is usually taken.  Its
           value is a reference to an associative array, in which each key is the name of a package, and each value is
           an a reference to an array of function names which should be exported by the extension.  For instance, one
           might say "DL_FUNCS => { Homer::Iliad => [ qw(trojans greeks) ], Homer::Odyssey => [ qw(travellers family
           suitors) ] }".  The function names should be identical to those in the XSUB code; "Mksymlists" will alter
           the names written to the linker option file to match the changes made by xsubpp.  In addition, if none of
           the functions in a list begin with the string boot_, "Mksymlists" will add a bootstrap function for that
           package, just as xsubpp does.  (If a boot_<pkg> function is present in the list, it is passed through
           unchanged.)  If DL_FUNCS is not specified, it defaults to the bootstrap function for the extension speci-
           fied in NAME.

           This is identical to the DL_VARS attribute available via MakeMaker, and, like DL_FUNCS, it is usually spec-
           ified via MakeMaker.  Its value is a reference to an array of variable names which should be exported by
           the extension.

           This key can be used to specify the name of the linker option file (minus the OS-specific extension), if
           for some reason you do not want to use the default value, which is the last word of the NAME attribute
           (e.g. for "Tk::Canvas", FILE defaults to "Canvas").

           This provides an alternate means to specify function names to be exported from the extension.  Its value is
           a reference to an array of function names to be exported by the extension.  These names are passed through
           unaltered to the linker options file.  Specifying a value for the FUNCLIST attribute suppresses automatic
           generation of the bootstrap function for the package. To still create the bootstrap name you have to spec-
           ify the package name in the DL_FUNCS hash:

               Mksymlists({ NAME     => $name ,
                            FUNCLIST => [ $func1, $func2 ],
                            DL_FUNCS => { $pkg => [] } });

           This attribute is used to specify names to be imported into the extension. It is currently only used by
           OS/2 and Win32.

           This gives the name of the extension (e.g. "Tk::Canvas") for which the linker option file will be produced.

       When calling "Mksymlists", one should always specify the NAME attribute.  In most cases, this is all that's
       necessary.  In the case of unusual extensions, however, the other attributes can be used to provide additional
       information to the linker.

       Charles Bailey <>

       Last revised 14-Feb-1996, for Perl 5.002.

perl v5.8.8                       2009-03-22           ExtUtils::Mksymlists(3)