Try this. Create a directory called "say" and place the file say.i in it, along with Makefile.PL which should look like

#!/usr/bin/perl -w  -  
use strict;
use ExtUtils::MakeMaker;

system q[ swig -perl5 say.i ];

WriteMakefile(
    'NAME'    => 'say',    # Name of package
    'INC'     => ' -I/usr/local/include/flite ',
    'LIBS'    => [
        ' -llflite_cmu_us_kal -lflite_usenglish -lflite_cmulex -lflite
+ -lm '
    ], # Name of custom libraries
    'OBJECT'  => 'say.o say_wrap.o', # Object files
);
[download]

Now, execute the commands

• perl Makefile.PL
• make
• make install

If all that works out as it should, you should now have a module called "say" installed, and you can go ahead and execute "make dist" which should create a file "say-0.01.tar.gz" suitable for uploading to cpan.

If you do plan to upload this to cpan, I'd suggest thinking about a better name since all lowercase package names are generally reserved for pragmas.