Thank you for your answer

I tried to do an install PAR::Packer, but CPAN used to tell me that the module was already installed, which led me to try the make clean and everything else...

But I just tried your cpan>force install PAR::Packer and it worked, I managed to create a runnable bin out of a perl script, and even managed to create a binary file including perl, two other modules and another script, it works just fine :)

THANKS A LOT !