Beyond Linux® From Scratch (System V Edition) - Version r11.2-1338

Chapter 10. Graphics and Font Libraries

qrencode-4.1.1

Introduction to qrencode

Qrencode is a fast and compact library for encoding data in a QR Code symbol, a 2D symbology that can be scanned by handheld terminals such as a mobile phone with a CCD sensor.

This package is known to build and work properly using an LFS 11.3 platform.

Package Information

  • Download (HTTP): https://fukuchi.org/works/qrencode/qrencode-4.1.1.tar.bz2

  • Download MD5 sum: de7185bcab635a34730e1b73d4efa705

  • Download size: 451 KB

  • Estimated disk space required: 5.0 MB (with documentation, add 5 MB for tests)

  • Estimated build time: less than 0.1 SBU, add 0.1 SBU for tests

Qrencode Dependencies

Recommended

libpng-1.6.39

Optional

Doxygen-1.9.6 for generating documentation, and SDL2-2.26.3 for tests

User Notes: https://wiki.linuxfromscratch.org/blfs/wiki/qrencode

Installation of qrencode

Install libqrencode by running the following commands: 

./configure --prefix=/usr &&
make

If you have installed Doxygen-1.9.6, you can build the documentation by issuing: 

doxygen

The tests must be run after installing the package.

Now, as the root user: 

make install

If you have built the optional documentation, install it as the root user: 

install -vdm 755 /usr/share/doc/qrencode-4.1.1 &&
mv html/* /usr/share/doc/qrencode-4.1.1

To test the results, if you have passed the --with-tests option to configure, issue: make check.

Command Explanations

--with-tests: This option allows building the test programs. It requires SDL2-2.26.3.

--without-tools: This option prevents building the qrencode executable, removing the need for libpng-1.6.39.

Contents

Installed Program: qrencode
Installed Library: libqrencode.so
Installed Directory: /usr/share/doc/qrencode-4.1.1 (optional)

Short Descriptions

qrencode

encodes input data in a QR Code and saves it as a PNG or EPS image

libqrencode.so

contains functions for encoding data in a QR code symbol