$ make
cp lib/HTML/Tidy/Message.pm blib/lib/HTML/Tidy/Message.pm
cp lib/HTML/Tidy.pm blib/lib/HTML/Tidy.pm
/usr/local/bin/perl /opt/perl/5.6.1/lib/perl/ExtUtils/xsubpp  -typemap /opt/perl/5.6.1/lib/perl/ExtUtils/typemap  Tidy.xs > Tidy.xsc && mv Tidy.xsc Tidy.c
Error: 'const char *' not in typemap in Tidy.xs, line 15
Error: 'const char *' not in typemap in Tidy.xs, line 50
Error: 'const char *' not in typemap in Tidy.xs, line 51
Please specify prototyping behavior for Tidy.xs (see perlxs manual)
make: *** [Tidy.c] Error 1