I do not know what you are compiling, but the currently supplied tarball (bstamp-2006.05.31.tar.gz) does not contain any such file as stampbc.cc:
$ tar -itf bstamp-2006.05.31.tar.gz
bstamp/
bstamp/bstamp_run.cpp
bstamp/tokenizer.h
bstamp/PBASIC_Tokenizer_Software_Distribution_License.txt
bstamp/pbasic_examples/
bstamp/pbasic_examples/hello.bs2
bstamp/pbasic_examples/Makefile...
