The only way I found to force the relevant code to be included was this command: EXTRA_CFLAGS='-DSTACKLESS -D__arm32__ -DPy_STACKLESS_H' make But then I get an error during the build of ./Stackless/core/slp_transfer.c You can see the message here: http://pastebin.com/LdXSpekz Please help --Luca