Your will need to edit buildsys/config-<platform-compiler-pdormax>.txt to adjust paths to various folders.
Then you will need to edit config.txt file. You do not need to include SndObj for this external but you do need stk option to be properly set.
OK after running the build script for flext for the first time I get a config-mac-pd-gcc.txt file, but I do not see this other config.txt file to edit...?
Using flext 0.5.1 on iMac G5 10.4.8
Thanks, Kevin