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Installling DOSemu On Modern Linux Systems

It is possible to install DOSemu using a patch that a friend of mine created for DOSemu to prevent the segmentation faults that occur using DOSemu without being patched. I tried dosemu2 but had no success. I setup DOSemu under Slackware Linux but this also will work with Devuan Linux 5.0 (Daedalus) for use with MBSE BBS software but the directions should work with minor modifications on any Linux distro. Slackware Linux has the libraries you need installed assuming a standard full install of Slackware. I compiled DOSemu for a default install.

NOTE: This code is old, but it works, and the documentation is outdated. The specific reason I use DOSemu is it behaves better for me than either DOSbox or DOSbos-X.

I do not and cannot offer support on installing DOSemu! You are on your own.

Here's the steps to get this done:

1. You will need to run the following command to install necessary dependencies for Devuan:
   
   apt install build-essential git libslang2-dev xaw3dg-dev libsdl-console libsdl-console-dev


2. In your home directory, run this command:
   
   git clone git://git.code.sf.net/p/dosemu/code dosemu


3. Download the following files into your new dosemu directory:
   •  FreeDOS image (if you are not using another DOS for your interpreter): Make sure to rename it to dosemu-freedos-bin.tgz so DOSemu will see it during its compiling. DO not extract the archive! DOSemu will do the work for you.
   •  A patch that fixes segfaults in the DOSemu code: Once copied to your dosemu directory, simply extract it using this command: tar xf dosemu-segfault-fix.tgz. The patch will be installed into the DOSemu source code tree correctly. Why this patch? The shortcut command "sysctl -w vm.mmap_min_addr=0" trick doesn't work on all systems and the patch fixes this correctly in the source code.
   
   
4. Run these commands in sequence:
1. ./configure
2. make
3. su (DO NOT USE su - or sudo!)
4. make install
   
   


5. If all is successful, DOSemu will give some additional information for you then you'll be returned to a prompt. From there, type xdosemu or dosemuand you should see a DOSemu window open. To exit the emulator, type exitemu.

Stuck? Try here for some documentation.

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