==> Validating source files with sha1sums...
    J7Z-1.0.0.tar.bz2 ... Passed
==> Extracting Sources...
  -> Extracting J7Z-1.0.0.tar.bz2 with bsdtar
==> Removing existing pkg/ directory...
==> Starting build()...
/bin/sh: - : invalid option



Cleaning the J7Z objects ...
Viewing the J7Z environment and dependencies ...
Setting the J7Z permissions ...
make: *** Error: The required 'Apache Ant' executable file can't be found; ensure it's installed and visible before building.  Stop.
make: *** Waiting for unfinished jobs....