Describe djtar.

diff --git a/INSTALL b/INSTALL
index a0943b6f3d073c18b4c82f060ecf3c0765e94466..de4042b1c6bafde7e4b3650a4716a0fe68ecb7aa 100644 (file)
--- a/INSTALL
+++ b/INSTALL
@@ -514,11 +514,23 @@ To install on MSDOG, you need to have the GNU C compiler for MSDOG
 remarks in config.bat for more information about locations and
 versions.
 
 remarks in config.bat for more information about locations and
 versions.
 

+If you are compiling on an MSDOG-like system which has long file
+names, you may need to do `SET LFN=y' for some of the commands,
+especially the compilation commands.  It might be more convenient to
+unpack the Emacs distribution with djtar, which comes with djgpp;
+djtar truncates file names to 8.3 naming as it extracts files, even if
+the system allows long file names, and this ensures that build
+procedures designed for 8.3 file names still work.  Use as in `djtar x
+foo.tar' or `djtar x foo.tgz'.
+

 Some users report that running Emacs 19.29 requires dpmi memory
 management.  We do not know why this is so, since 19.28 did not need
 Some users report that running Emacs 19.29 requires dpmi memory
 management.  We do not know why this is so, since 19.28 did not need

-it.  If we find out what change introduced this requirement, we will
-try to eliminate it.  It is possible that this problem happens only
-when there is not enough physical memory on the machine.
+it.  If we find out what change introduced this requirement, we may
+try to eliminate it.  ("May" because perhaps djgpp version 2's
+improved dpmi handling means this is no longer a problem.)
+
+It is possible that this problem happens only when there is not enough
+physical memory on the machine.

 
 You can find out if you have a dpmi host by running go32 (part of
 djgpp) without arguments; it will tell you if it uses dpmi memory.
 
 You can find out if you have a dpmi host by running go32 (part of
 djgpp) without arguments; it will tell you if it uses dpmi memory.