__illumos__      4768 src/dps8/dps8_cpu.c #  if defined(__illumos__)
__illumos__       252 src/libsir/include/sir/platform.h #   if defined(__illumos__) || ((defined(__sun) || defined(__sun__)) && \
__illumos__       444 src/libsir/include/sir/platform.h #  if defined(__illumos__)