Error when compiling toAPK tool

Hi

When compiling the toAPK tool with make compile-lua given in the README.md, I get this error:

Compile error in src/toAPK.fnl:10
  Compile error in src/fennel/macros.fnl:254
  macros module not found.

...

(import-macros {: packagestrip} :macros)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

An equivalent error rises when trying to use it directly.

What am I doing wrong?

Thank you.

/Henrik