tce-load -i compiletc python3.8-meson vala-dev libhandy1-dev libwebp-dev libgusb-dev sane-dev gettext itstool

wget https://download.gnome.org/sources/simple-scan/40/simple-scan-40.5.tar.xz

cd simple-scan-40.5

mkdir build
cd build

CC="gcc -flto -march=armv8-a+crc -mtune=cortex-a72 -Os -pipe" CXX="g++ -flto -march=armv8-a+crc -mtune=cortex-a72 -Os -pipe -fno-exceptions -fno-rtti" meson --prefix=/usr/local --localstatedir=/var --buildtype=plain

ninja [0m 30.17s]
sudo ninja install

[+20.89s] DEBUG: simple-scan.vala:1819: Requesting scan at 300 dpi from device 'hpaio:/net/Officejet_6700?ip=192.168.1.150'
[+20.89s] DEBUG: scanner.vala:1754: Scanner.scan ("hpaio:/net/Officejet_6700?ip=192.168.1.150", dpi=300, scan_mode=ScanMode.COLOR, depth=8, type=single, side=both, paper_width=0, paper_height=0, brightness=0, contrast=0, delay=0ms)
[+20.89s] DEBUG: scanner.vala:844: Processing request
[+20.89s] DEBUG: scanner.vala:905: sane_open ("hpaio:/net/Officejet_6700?ip=192.168.1.150") -> SANE_STATUS_UNSUPPORTED
[+20.89s] WARNING: scanner.vala:909: Unable to open device: Operation not supported