Hi , I'm trying to compile the simple example externals foo1 , foo2 but am having problems. I seem to be having troubles with the Linker. I'm getting lots of "undefined reference to ... " messages . Also for anyone who is using it ,do you set up your project as a DLL file. or Empty Project? Johannes article http://iem.kug.ac.at/pd/externals-HOWTO/ is great for writing externals but I was wondering if there is any further info. on compiling,linking and integrating them into PD.Thanks. Jim