Re: Executable deleted after first run

[Richard Stallman]

It appears your machine is using a defective file system that doesn't
correctly implement multiple file names.  It would be good for Emacs
to work better with that defective file system, if there is an easy
way to do it.

    Is there any reason to choose hard link over symbolic link?

Yes.  It is so that you don't have to keep the name emacs-M.N.O.P if
you don't want to keep it.

That feature is important, so the simple change of unconditionally
making `emacs' a symlink to `emacs-M.N.O.P' should not be made.

Is it possible for `make install' to detect this defective file
system?  It would be ok for `make install' to create a symlink
conditionally in that case.

Otherwise we can only document the problem, perhaps in etc/PROBLEMS.