Schnellanleitung Dosbox von Null kompilieren auf Debian Buster oder Fedora.

Debian:

apt-get install build-essential
apt-get install apt-src
apt-src install dosbox //Sourcen werden nach /root/dosbox_074BLA 
entpackt
sed -i 's/else key-=8;//' /root/dosbox-074BLABLA/src/gui/sdl_mapper.cpp
apt-src build dosbox
dpkg --install /root/dosbox_0.74-2-3BLABLABLA.deb
dosbox

Fedora:

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cd /root

dnf groupinstall "Development Tools"

dnf install autoconf automake SDL SDL-devel SDL_net-devel SDL_sound-devel g++

dnf download --source dosbox //download Sources from Repo

rpm -ivh dosbox.......src.rpm //install package

cd rpmbuild/SOURCES

tar -xfv dosbox.......tar.gz

cd dosbox-0.74-3......

sh autogen.sh

./configure

make && make install