Hi Lorenz,
flext: i don't know if this is possible and i'm not sure if this makes sense: how about just linking flext statically into pd binary? if i have to compile flext for each pd version/flavour anyway i don't see a drawback to just include it (appart from eventual stability issues).
for newer versions of flext (like cvs) i think, if not compiled with extra flags (i don't say which ones ,-) ) the flext libraries should be really independent of the pd version. I might be wrong of course - if so please tell me where.
best greetings, Thomas