[Dragan Noveski]
  following this suggestion it works, but the installed
plugins are called
 'C*pluginname' instead of 'CAPS pluginname'. 
That's intended.
  at the end of 'make' i get this:
 .....
 g++ -nostartfiles -O2 -ffast-math -funroll-loops -Wall -fPIC -DPIC -msse
 -mfpmath=sse -shared -o caps.so Amp.o Cabinet.o Chorus.o Click.o Clip.o
 Compress.o Eq.o HRTF.o interface.o Lorenz.o Pan.o Phaser.o Preamp.o Reverb.o
 Roessler.o Scape.o Sin.o SweepVF.o ToneControls.o ToneStack.o VCO.o White.o
 making tags
 Duplicate entry in file Amp.cc, line 303: setup
 Second entry ignored 
[lots of second entries elided]
This looks interesting .. what version of g++ are you using?  Do the
plugins work OK?  Does the compiler stop producing duplicates if you
lower the -O level?
  after running 'make install', trying to do
'make uninstall' now, i get:
 murija2:/home/nowhiskey/software/nove/ladspa/caps-0.4.0# make uninstall
 rm /usr/local/lib/ladspa/caps.so
 rm /usr/local/lib/ladspa/caps-ng.so
 rm: Entfernen von »/usr/local/lib/ladspa/caps-ng.so« nicht möglich: Datei oder
 Verzeichnis nicht gefunden
 make: [uninstall] Fehler 1 (ignoriert)
 murija2:/home/nowhiskey/software/nove/ladspa/caps-0.4.0#
 (complaining that /usr/local/lib/ladspa/caps-ng.so cannot be found...)
 any idea on this? 
That's not a real error, make tries to remove a previous alternative
version of CAPS but since you never had it installed it's no problem.
'make' is just getting a bit chatty here, telling you it ignores what
it is instructed to ignore.
Tim