To build the DLA suite, you need a Unix/GNU like system (which might
even be modern Windows), with the following software installed:

- Required: A "make" command. This can be GNU or BSD make. The
  Makefile doesn't use any special features, so pretty much any
  version should be OK.

- Required: "cl65", from CC65, the cross-compiler for the 6502. Any
  recent version should do; I used 2.19.

- Optional: "perl", the Perl 5 interpreter. Only used to generate the
  file dlatbl.s. You only need Perl if you're going to modify the data
  tables (the mkdlatbl.pl script).

- Optional: "cc", a host C compiler (e.g. gcc or clang). Only used for
  compiling dla2csv for the host.

You should be able to build everything from a terminal by typing
"make" in the source directory.

Ideally, all the software should be found in your $PATH. If not,
you can set the full paths by defining them on the make command line.
Example that sets all 3:

make CL65=/opt/cc65/bin/cl65 PERL=/usr/local/perl/bin/perl5 CC=/usr/bin/clang

Also you could set CFLAGS and CL65FLAGS, if you can think of a reason
to do that.

If you have trouble building on Linux, ask me for help. I can be found
on irc.libera.chat in the ##atari channel, as user name Urchlay. If
you have trouble on other OSes, ask someone who actually knows about
your OS (not me, I don't do Windows or Mac).