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I am attempting to port dosemu-1.4.0 to the OLPC operating system, Sugar,
so that we may inflict DOS on yet another generation of innocent children.
~ The key difficulty with this is the necessity of installing in a
non-default directory, in this case $SUGAR_BUNDLE_PATH/dosemu_install/

dosemu is theoretically relocatable, but I could not find any
documentation indicating what was required to relocate it.  By trial and
error, I have determined that I need to patch the dosemu shell script and
set the DOSEMU_LIB_DIR, DOSEMU_CONF_DIR, and DOSEMU_HDIMAGE_DIR envvars,
in addition to PATH and LD_LIBRARY_PATH.  I also have had to redirect the
etc/dosemu/drives/c and d symlinks.

Even after all this, I still get failures, as shown in the attached
failure log.  The first error is

ERROR: X support not compiled in or not found:
ERROR: /usr/lib/dosemu/libplugin_X.so: cannot open shared object file: No
such file or directory

This is very surprising, since I've set LD_LIBRARY_PATH in the launcher
script.

Another surprising error is

Error in built-in global.conf: (line 671) Disk-device/file
/var/lib/dosemu/drives/c doesn't exist.

Since I have explicitly set DOSEMU_HDIMAGE_DIR, I don't know why I still
see this.

What do I have to do to make a relocated installation work?

- --Ben
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