Compiled on RPI4B-4G with 5.10.77-piCore-v8

Compile Flags:
CFLAGS='-mtune=generic -Os -pipe -flto -fuse-linker-plugin -fno-exceptions'
CXXFLAGS='-mtune=generic -Os -pipe -flto -fuse-linker-plugin -fno-exceptions -fno-rtti'
LDFLAGS='-Wl,-O1'
export CFLAGS CXXFLAGS LDFLAGS

Dependencies:
compiletc
libarchive-dev

Commands:

wget --no-check-certificate https://github.com/vasi/pixz/releases/download/v1.0.7/pixz-1.0.7.tar.gz

tar -xf pixz-1.0.7.tar.gz

cd pixz-1.0.7/

./configure --prefix=/usr/local

time make -j16
real    0m 1.04s
user    0m 1.35s
sys     0m 0.16s

DESTDIR=/tmp/packing-pixz make install