-If you are building the DJGPP version of Emacs on a DOS-like system
-which supports long file names (e.g. Windows 9X or Windows XP), you
-need to make sure that long file names are handled consistently both
-when you unpack the distribution and compile it. With DJGPP v2.0 or
-later, long file names support is by default, so you need to unpack
-Emacs distribution in a way that doesn't truncate the original long
-filenames to the DOS 8.3 namespace; the easiest way to do this is to
-use djtar program which comes with DJGPP, since it will behave
-consistently with the rest of DJGPP tools. Alternatively, you can
-build Emacs with LFN=n, if some of your tools don't support long file
-names: just ensure that LFN is set to `n' during both unpacking and
-compiling.
+Building the DJGPP version of Emacs is supported only on systems which
+support long file names (e.g. Windows 9X or Windows XP). You need to
+unpack Emacs distribution in a way that doesn't truncate the original
+long filenames to the DOS 8.3 namespace; the easiest way to do this is
+to use djtar program which comes with DJGPP, since it will behave
+consistently with the rest of DJGPP tools. Do _not_ disable the DJGPP
+long-file-name support (a.k.a. "LFN") while building Emacs.