I would like to know if it's allowed to distribuite a binary-only/non-LGPL'ed application together with a shared library (used by the application itself) in a single archive, where the original source code of that library is covered by the LGPL and has not been modified for the application use.
The reason is that the application can be compiled so that it searches for the library in the current directory ./ first, for example. This would make the binary-only application depending on a particular version of the lib almost identical to the same application with that library statically linked, although in the latter case you must license the resulting application under the terms of the LGPL.
Myapp/ -- the archive myapp -- the binary-only application otherlib.so -- the LGPL'ed library
$ cd Myapp
$ ./myapp