csc -static mod1.scm                                                                         ✔  952  03:59:31
Undefined symbols for architecture x86_64:
  "_C_mod2_toplevel", referenced from:
      _f_141 in mod1.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Error: shell command terminated with non-zero exit status 256: 'clang' 'mod1.o' 'mod2.o' -o 'mod1' -m64 -L/usr/local/Cellar/chicken/5.1.0/lib /usr/local/Cellar/chicken/5.1.0/lib/libchicken.a -lm