tce-load -i compiletc automake libtool-dev intltool gettext-dev

wget https://github.com/fukuchi/libqrencode/archive/refs/tags/v4.1.1.tar.gz

cd libqrencode-4.1.1

./autogen.sh

CC="gcc -mtune=generic -Os -pipe" CXX="g++ -mtune=generic -Os -pipe -fno-exceptions -fno-rtti" ./configure --prefix=/usr/local --disable-static --localstatedir=/var

find . -name Makefile -type f -exec sed -i 's/-g -O2//g' {} \;

make [0m 2.34s]
sudo make install

Options used to compile and link:
  CC       = gcc -mtune=generic -Os -pipe
  CFLAGS   = -Wall -g -O2 -pthread
  CPPFLAGS = 
  CXX      = g++ -mtune=generic -Os -pipe -fno-exceptions -fno-rtti
  CXXFLAGS = 
  LDFLAGS  =