Hello,
In `Makefile.in` and subsequently in `Makefile` there is wrong option passed to the linker - it's `--soname` and should be `-soname`.
```
$ ld --help | grep soname
-h FILENAME, -soname FILENAME
```
$ ld --help | grep soname
-h FILENAME, -soname FILENAME
```
It seems to work anyways but formally the option has one hyphen.
