perl Build.PL wxWidgets-version=2.9.4

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cpan> o conf init mbuild_install_arg
cpan> --uninst 1
cpan> o conf commit

##</code><code>##

cpan> o conf mbuild_install_arg
    mbuild_install_arg  [--uninst 1]

##</code><code>##

cpan> o conf init make_install_arg
cpan> UNINST=1
cpan> o conf commit
cpan> o conf make_install_arg
    make_install_arg  [UNINST=1]