todo

二维码QR的linux平台下的编码源代码

Thread unsafe.
Only two functions, QRspec_newFrame() and init_rs(), are thread unsafe.

view_qrcode should support various options like qrencode.

This package contains

*.c and *.h files (total):  5422 lines, 131476 bytes.
configure script         : 22866 lines, 740829 bytes.

It's absolutely crazy.