I am working my way through the Debian New Maintainer's Guide at
The program I'm working on uses a configure script to build a Makefile. So I
need to change it to install the binary into /usr/bin instead of
/usr/local/bin. But the new maintainer's guied says to put $(DESTDIR) in
front of the directory names. Like:
BIN = $(DESTDIR)/usr/bin
But the Makefile already uses that variable name. What is the point of using
$(DESTDIR) in maintaining the Makefile?