Broken dependencies issue

I tested the binary shared with me @buxx unfortunately, they fail to run on my box:

Configuration tool:

```
damien@christophecolomb:~/bin/trsync$ ./configure
[21745] Error loading Python lib '/tmp/_MEIPoZXbz/libpython3.8.so.1.0': dlopen: /lib/x86_64-linux-gnu/libm.so.6: version `GLIBC_2.29' not found (required by /tmp/_MEIPoZXbz/libpython3.8.so.1.0)
```

systray manager:

```
damien@christophecolomb:~/bin/trsync$ ./trsync_manager_systray
./trsync_manager_systray: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.25' not found (required by ./trsync_manager_systray)
./trsync_manager_systray: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.29' not found (required by ./trsync_manager_systray)
./trsync_manager_systray: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.28' not found (required by ./trsync_manager_systray)
```

Is it possible to build a really statically linked binary? Should I build it myself? Or the only way to use trsync is to upgrade to a debian version 10 or + (I'm currently on debian 9.13 :-1: )