--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,4 @@
+PREFIX=/usr
 MUNGE=xargs perl -i.bak -ne ' \
 		print $$_."\# This file was preprocessed, do not edit!\n" \
 			if m:^\#!/usr/bin/perl:; \
@@ -24,60 +25,64 @@
 
 # Anything that goes in the debconf-utils package.
 install-utils:
-	install -d $(prefix)/usr/bin
+	install -d $(DESTDIR)$(PREFIX)/bin
 	find . -maxdepth 1 -perm /100 -type f -name 'debconf-*' | grep -v debconf-set-selections | grep -v debconf-show | grep -v debconf-copydb | grep -v debconf-communicate | grep -v debconf-apt-progress | grep -v debconf-escape | \
-		xargs -i install {} $(prefix)/usr/bin
+		xargs -i install {} $(DESTDIR)$(PREFIX)/bin
+
+# Installs only english man pages
+install-doc:
+	$(MAKE) -C doc PREFIX=$(PREFIX) DESTDIR=$(DESTDIR) install
 
 # Anything that goes in the debconf-i18n package.
 install-i18n:
-	$(MAKE) -C po install
+	$(MAKE) -C po PREFIX=$(PREFIX) DESTDIR=$(DESTDIR) install
 
 PERL := perl
 PERL_VENDORLIB := $(shell $(PERL) -MConfig -e 'print $$Config{vendorlib}')
 
 # The Python 3 package.
 install-python3:
-	install -d $(prefix)/usr/lib/python3/dist-packages
-	install -m 0644 debconf.py $(prefix)/usr/lib/python3/dist-packages/
+	install -d $(DESTDIR)$(PREFIX)/lib/python3/dist-packages
+	install -m 0644 debconf.py $(DESTDIR)$(PREFIX)/lib/python3/dist-packages/
 
 # Install all else.
 install-rest:
-	install -d $(prefix)/etc \
-		$(prefix)/var/cache/debconf \
-		$(prefix)/usr/share/debconf \
-		$(prefix)/usr/share/pixmaps
-	install -m 0644 debconf.conf $(prefix)/etc/
-	install -m 0644 debian-logo.png $(prefix)/usr/share/pixmaps/
+	install -d $(DESTDIR)/etc \
+		$(DESTDIR)/var/cache/debconf \
+		$(DESTDIR)$(PREFIX)/share/debconf \
+		$(DESTDIR)$(PREFIX)/share/pixmaps
+	install -m 0644 debconf.conf $(DESTDIR)/etc/
+	install -m 0644 debian-logo.png $(DESTDIR)$(PREFIX)/share/pixmaps/
 	# This one is the ultimate backup copy.
-	grep -v '^#' debconf.conf > $(prefix)/usr/share/debconf/debconf.conf
+	grep -v '^#' debconf.conf > $(DESTDIR)$(PREFIX)/share/debconf/debconf.conf
 	# Make module directories.
 	find Debconf -type d |grep -v CVS | \
-		xargs -i install -d $(prefix)/$(PERL_VENDORLIB)/{}
+		xargs -i install -d $(DESTDIR)/$(PERL_VENDORLIB)/{}
 	# Install modules.
 	find Debconf -type f -name '*.pm' |grep -v CVS | \
-		xargs -i install -m 0644 {} $(prefix)/$(PERL_VENDORLIB)/{}
+		xargs -i install -m 0644 {} $(DESTDIR)/$(PERL_VENDORLIB)/{}
 	# Special case for back-compatability.
-	install -d $(prefix)/$(PERL_VENDORLIB)/Debian/DebConf/Client
+	install -d $(DESTDIR)/$(PERL_VENDORLIB)/Debian/DebConf/Client
 	cp Debconf/Client/ConfModule.stub \
-		$(prefix)/$(PERL_VENDORLIB)/Debian/DebConf/Client/ConfModule.pm
+		$(DESTDIR)/$(PERL_VENDORLIB)/Debian/DebConf/Client/ConfModule.pm
 	# Other libs and helper stuff.
-	install -m 0644 confmodule.sh confmodule $(prefix)/usr/share/debconf/
-	install frontend $(prefix)/usr/share/debconf/
-	install -m 0755 transition_db.pl fix_db.pl $(prefix)/usr/share/debconf/
+	install -m 0644 confmodule.sh confmodule $(DESTDIR)$(PREFIX)/share/debconf/
+	install frontend $(DESTDIR)$(PREFIX)/share/debconf/
+	install -m 0755 transition_db.pl fix_db.pl $(DESTDIR)$(PREFIX)/share/debconf/
 	# Install essential programs.
-	install -d $(prefix)/usr/sbin $(prefix)/usr/bin
+	install -d $(DESTDIR)$(PREFIX)/sbin $(DESTDIR)$(PREFIX)/bin
 	find . -maxdepth 1 -perm /100 -type f -name 'dpkg-*' | \
-		xargs -i install {} $(prefix)/usr/sbin
+		xargs -i install {} $(DESTDIR)$(PREFIX)/sbin
 	find . -maxdepth 1 -perm /100 -type f -name debconf -or -name debconf-show -or -name debconf-copydb -or -name debconf-communicate -or -name debconf-set-selections -or -name debconf-apt-progress -or -name debconf-escape | \
-		xargs -i install {} $(prefix)/usr/bin
+		xargs -i install {} $(DESTDIR)$(PREFIX)/bin
 	# Now strip all pod documentation from all .pm files and scripts.
-	find $(prefix)/$(PERL_VENDORLIB)/ $(prefix)/usr/sbin		\
-	     $(prefix)/usr/share/debconf/frontend 			\
-	     $(prefix)/usr/share/debconf/*.pl $(prefix)/usr/bin		\
+	find $(DESTDIR)/$(PERL_VENDORLIB)/ $(DESTDIR)$(PREFIX)/sbin			\
+	     $(DESTDIR)$(PREFIX)/share/debconf/frontend 					\
+	     $(DESTDIR)$(PREFIX)/share/debconf/*.pl $(DESTDIR)$(PREFIX)/bin	\
 	     -name '*.pl' -or -name '*.pm' -or -name 'dpkg-*' -or	\
 	     -name 'debconf-*' -or -name 'frontend' | 			\
 	     grep -v Client/ConfModule | $(MUNGE)
-	find $(prefix) -name '*.bak' | xargs rm -f
+	find $(DESTDIR) -name '*.bak' | xargs rm -f
 
 demo:
 	PERL5LIB=. ./frontend samples/demo

--- a/po/Makefile
+++ b/po/Makefile
@@ -4,14 +4,15 @@
 
 POFILES=$(wildcard *.po)
 MOFILES=$(POFILES:.po=.mo)
+PREFIX=/usr
 
 all: debconf.pot $(MOFILES)
 
 install: all
 	for file in $(MOFILES); do \
 		lang=`echo $$file | sed 's/\.mo//'`; \
-		install -d $(prefix)/usr/share/locale/$$lang/LC_MESSAGES/; \
-		install -m 0644 $$file $(prefix)/usr/share/locale/$$lang/LC_MESSAGES/debconf.mo; \
+		install -d $(DESTDIR)$(PREFIX)/share/locale/$$lang/LC_MESSAGES/; \
+		install -m 0644 $$file $(DESTDIR)$(PREFIX)/share/locale/$$lang/LC_MESSAGES/debconf.mo; \
 	done
 
 debconf.pot: $(POTFILES)

--- a/doc/Makefile
+++ b/doc/Makefile
@@ -1,6 +1,7 @@
 all: manpages
 	./graph.pl `find .. -name \*.pm` > hierarchy.txt
 
+PREFIX=/usr
 pod2man=pod2man -c Debconf -r '' --utf8
 manpages:
 	cd man && po4a po4a/po4a.cfg
@@ -18,6 +19,13 @@
 		xargs -i sh -c "cd .. ; $(pod2man) --section=1 {} > doc/man/gen/{}.1"
 	find .. -maxdepth 1 -perm /100 -type f -name 'dpkg-*' -printf '%P\n' | \
 		xargs -i sh -c "cd .. ; $(pod2man) --section=8 {} > doc/man/gen/{}.8"
+
+install:
+	install -d $(DESTDIR)$(PREFIX)/share/man/man1 $(DESTDIR)$(PREFIX)/share/man/man3 $(DESTDIR)$(PREFIX)/share/man/man8
+
+	for num in 1 3 8; do \
+		find man/gen/ -type f -not -name "*.*.*" -name "*.$$num" -exec cp --target-directory=$(DESTDIR)$(PREFIX)/share/man/man$$num/ {} +; \
+	done
 
 clean:
 	cd man && po4a --rm-translations po4a/po4a.cfg