appImage segfaults and build fails on Devuan 4

[hyperlogos]

The appimage segfaulted so I tried to build admin-tools myself on Devuan 4 (based on Debian 11).

I built my own libxcrypt from the git sources and installed it to /usr/local.

This is where my build went wrong first:

Making all in yast-ruby-bindings
make[2]: Entering directory '/home/drink/Software/admin-tools/src/yast-ruby-bindings'
cmake -DCMAKE_CXX_FLAGS="-I/home/drink/Software/admin-tools/src/yast-core/liby2util-r/src/include -I/home/drink/Software/admin-tools/src/yast-core/libycp/src/include -I/home/drink/Software/admin-tools/src/yast-core/libscr/src/include -I/home/drink/Software/admin-tools/src" -DCMAKE_MODULE_PATH=/home/drink/Software/admin-tools/src/ -DCMAKE_PREFIX_PATH=/home/drink/Software/admin-tools/src/yast-ycp-ui-bindings/src/.libs/ -DCMAKE_PREFIX_PATH=/home/drink/Software/admin-tools/src/yast-core/scr/src/.libs/ -DCMAKE_PREFIX_PATH=/home/drink/Software/admin-tools/src/yast-core/wfm/src/.libs/ -DCMAKE_INSTALL_PREFIX=/usr/local CMakeLists.txt && make --trace
-- prefix set to /usr/local
-- Libraries will be installed in /usr/local/lib64
-- package name set to 'yast2-ruby-bindings'
-- Version: 4.5.4

-- YaST2 found: includes in /home/drink/Software/admin-tools/src/yast-core/liby2/src/include, library in /home/drink/Software/admin-tools/src/yast-core/liby2/src/.libs/liby2.so
--              plugins in /usr/local/lib64/YaST2/plugin
--              scr in /home/drink/Software/admin-tools/src/yast-core/scr/src/.libs/libpy2scr.so
--              wfm in /home/drink/Software/admin-tools/src/yast-core/wfm/src/.libs/libpy2wfm.so
--              UI in /home/drink/Software/admin-tools/src/yast-ycp-ui-bindings/src/.libs/libpy2UI.so
-- Configuring done
CMake Error: The following variables are used in this project, but they are set to NOTFOUND.
Please set them or make sure they are set and tested correctly in the CMake files:
RUBY_LIBRARY (ADVANCED)

I was able to bypass this by editing the CMakeCache.txt thusly:

RUBY_LIBRARY:FILEPATH=/usr/lib/x86_64-linux-gnu/libruby-2.7.so

The library is there, I don't know why it couldn't find it, I didn't look further.
Now I've got the whole thing built but because I'm trying to install to /usr/local it's dying here:

make[6]: Entering directory '/home/drink/Software/admin-tools/src/yast-core/liby2/src'
 /bin/mkdir -p '/usr/local/lib'
 /bin/bash ../../libtool   --mode=install /usr/bin/install -c -p   liby2.la '/usr/local/lib'
libtool:   error: error: cannot install 'liby2.la' to a directory not ending in /usr/lib
make[6]: *** [Makefile:513: install-libLTLIBRARIES] Error 1

I guess I'll try configure --prefix=/opt/admin-tools/usr
...hmm nope, it blew up again

make[4]: Entering directory '/home/drink/Software/admin-tools/src'
pushd yast-yast2; rake install && popd
/home/drink/Software/admin-tools/src/yast-yast2 /home/drink/Software/admin-tools/src
rake aborted!
LoadError: cannot load such file -- yast/rake
/home/drink/Software/admin-tools/src/yast-yast2/Rakefile:1:in `<top (required)>'
/usr/share/rubygems-integration/all/gems/rake-13.0.3/exe/rake:27:in `<top (required)>'
(See full trace by running task with --trace)
make[4]: *** [Makefile:571: install-exec-hook] Error 1
make[4]: Leaving directory '/home/drink/Software/admin-tools/src'

etc. I have rake installed on my system. It seems to be at /var/lib/gems/2.7.0/gems/rake-13.0.6. I don't know where to go from here.

Oh good, I just discovered that you're not successfully passing the --prefix flag on to the sub-projects, so now I've got a mess in /usr.