Makefile targets:

  all              - compile TOS/libc, tools, test suite, and examples (default)
  lib              - compile lib/libc.a
  test             - compile test/SUITE.TOS
  tool             - compile tool/m68k-atari-tos-gnu-toslink
  script           - compile scripts
  binutils         - compile binutils scripts
  compiler         - compile compiler scripts
  example          - compile example programs
  version          - display TOS/libc version
  clean            - remove generated files

  install          - compile and install everything in $prefix
  install-lib      - compile and install only TOS/libc library in $prefix
  install-binutils - compile and install only binutils in $prefix
  install-compiler - compile and install only compiler in $prefix
  install-toslink  - compile and install only toslink in $bindir
  install-test     - compile and install only test suite in $testdir
  install-example  - compile and install only examples in $exampledir

Makefile options:

  -j [n]           - n simultaneous jobs for speed; unlimited with no argument

  prefix           - installation prefix (default ~/.local/usr/m68k-atari-tos-gnu)
  ...              - review main Makefile for more dirs (bindir, libdir, etc.)
  DESTDIR          - directory for staged installs, confer
                     <https://www.gnu.org/prep/standards/html_node/DESTDIR.html>

  V                - set to 1 to compile verbosely
  S                - set to 1 for sanitation checks
  INT16            - set to 1 for 16-bit integers (default is 32-bit integers)

  TARGET_COMPILE   - set the m68k target compiler suite to use for Atari ST code

Examples:

Build all:

	$ make TARGET_COMPILE=m68k-elf-

Build all with 16-bit integers:

	$ make TARGET_COMPILE=m68k-elf- INT16=1

Build only lib/libc.a:

	$ make TARGET_COMPILE=m68k-elf- lib

Build and install binutils and compiler:

	$ make TARGET_COMPILE=m68k-elf- install-binutils install-compiler

Build and install everything in ~/.local/usr/m68k-atari-tos-gnu:

	$ make TARGET_COMPILE=m68k-elf- install

Build and install only TOS/libc library in ~/my-atari-libc:

	$ make TARGET_COMPILE=m68k-elf- prefix="$HOME/my-atari-libc" install-lib
