"make install" issue if only built lv2

[suedwestlicht]

I build lv2 modules only:

make lv2
sudo make install

It fails at "cp -r bin/vst/* $(DESTDIR)$(PREFIX)/lib/vst/" and then the process ends. The following steps are not executed. I have to comment out this line, then it installs ok.

It should test if there are any files in bin/vst before trying to copy stuff from there.