🚀 go-pugleaf

You've probably found this bug already, but here's a bug report just
in case.  On a SPARCstation 1 running SunOS 4.1:

1.  I put GNU Emacs' source tree in /usr/local/src/emacs-18.57.

2.  I edited LIBDIR in Makefile to make /usr/local/lib/emacs the place
    where etc, info, lisp, and lock are supposed to be installed.

3.  To save disk space, I made /usr/local/lib/emacs a symbolic link to
    /usr/local/src/emacs-18.57.

4.  "make install" omitted copying etc, info, and lisp to $(LIBDIR).

5.  However, "make clean" cleaned etc even though that resulted in
    $(LIBDIR)/etc also being cleaned.

This would not happen if "make clean" used /bin/pwd instead of the
Bourne shell's built-in pwd to check that the current directory and
$(LIBDIR) are different directories.

John Interrante
interran@lurch.stanford.edu

*** Makefile.save	Tue Nov 27 13:36:57 1990
--- Makefile	Sat Mar  9 17:45:10 1991
***************
*** 106,112 ****
  
  clean:
  	cd src; make clean
! 	if [ `pwd` != `(cd ${LIBDIR}; pwd)` ] ; then \
  		cd etc; make clean; \
  	else true; \
  	fi
--- 105,111 ----
  
  clean:
  	cd src; make clean
! 	if [ `/bin/pwd` != `(cd ${LIBDIR}; /bin/pwd)` ] ; then \
  		cd etc; make clean; \
  	else true; \
  	fi