tce-load -i compiletc automake libtool-dev intltool bash SDL2-dev libxkbfile-dev alsa-dev libGL-dev nasm freetype-dev libXrandr-dev

wget https://github.com/joncampbell123/dosbox-x/archive/refs/tags/dosbox-x-v0.84.3.tar.gz

cd dosbox-x-dosbox-x-v0.84.3

./autogen.sh

edit configure
LIBS="-lncurses  $LIBS" -> LIBS="-lncursesw  $LIBS"

CPPFLAGS="-I/usr/local/include/ncursesw" LIBS="-lncursesw" CC="gcc -march=i486 -mtune=i686 -Os -pipe" CXX="g++ -march=i486 -mtune=i686 -Os -pipe" ./configure --prefix=/usr/local --localstatedir=/var --enable-sdl2

[-flto, -fno-rtti fail]

find . -name Makefile -type f -exec sed -i 's/-g -std=gnu11  -O2/-std=gnu11/g' {} \;
find . -name Makefile -type f -exec sed -i 's/-g -std=gnu++14  -O2/-std=gnu++14/g' {} \;

make [10m 16.05s]
sudo make install