No POD found for qrpng.c. Time to read the source?
qrpng.c
To install Image::PNG::QRCode, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Image::PNG::QRCode
CPAN shell
perl -MCPAN -e shell install Image::PNG::QRCode
For more information on module installation, please visit the detailed CPAN module installation guide.