'make check' fails: undefined reference to `main'

[Eric P. Mangold]

After a successful 'make' I tried to run the tests:

Archimedes ~/code/ecru % make check
make test_vm test_elib test_invoke test_bytecode_loader test_ref test_same test_guards test_vat
make[1]: Entering directory `/home/teratorn/code/ecru'
/bin/bash ./libtool --tag=CC --mode=link gcc -std=gnu99 -g -O2 -o test_vm src/tests/test_vm-test_vm.o -lcheck -pthread -lgio-2.0 -lgobject-2.0 -lgmodule-2.0 -ldl -lgthread-2.0 -lrt -lglib-2.0 libecru.la -lgmp -lgc -lm
gcc -std=gnu99 -g -O2 -o .libs/test_vm src/tests/test_vm-test_vm.o -pthread -lcheck /usr/lib/libgio-2.0.so /usr/lib/libgobject-2.0.so /usr/lib/libgmodule-2.0.so -ldl /usr/lib/libgthread-2.0.so -lrt /usr/lib/libglib-2.0.so ./.libs/libecru.so /usr/lib/libgmp.so /usr/lib/libgc.so -lm
/usr/lib/gcc/i486-linux-gnu/4.2.3/../../../../lib/crt1.o: In function `_start':
(.text+0x18): undefined reference to `main'
collect2: ld returned 1 exit status
make[1]: *** [test_vm] Error 1
make[1]: Leaving directory `/home/teratorn/code/ecru'
make: *** [check-am] Error 2

I haven't looked in to this at all... Let me know if I can check anything for you.