--- Makefile.orig	2012-06-06 01:55:53.000000000 +0800
+++ Makefile	2013-03-11 14:38:14.415417395 +0800
@@ -1,60 +1,21 @@
-BINS=isutf8 ifdata ifne pee sponge mispipe lckdo parallel errno
-PERLSCRIPTS=vidir vipe ts combine zrun chronic
-MANS=sponge.1 vidir.1 vipe.1 isutf8.1 ts.1 combine.1 ifdata.1 ifne.1 pee.1 zrun.1 chronic.1 mispipe.1 lckdo.1 parallel.1 errno.1
-CFLAGS?=-O2 -g -Wall
+BINS=parallel
+MANS=parallel.1
+CFLAGS+=-Wall
 INSTALL_BIN?=install -s
-PREFIX?=/usr
 
-DOCBOOK2XMAN=docbook2x-man
+.SUFFIXES: .1 .docbook
 
-all: $(BINS) $(MANS)
+all: $(BINS)
 
 clean:
 	rm -f $(BINS) $(MANS) dump.c errnos.h errno.o
 
 install:
-	mkdir -p $(DESTDIR)$(PREFIX)/bin
-	$(INSTALL_BIN) $(BINS) $(DESTDIR)$(PREFIX)/bin
-	install $(PERLSCRIPTS) $(DESTDIR)$(PREFIX)/bin
-	
-	mkdir -p $(DESTDIR)$(PREFIX)/share/man/man1
-	install $(MANS) $(DESTDIR)$(PREFIX)/share/man/man1
+	mkdir -p $(PREFIX)/bin
+	$(INSTALL_BIN) $(BINS) $(PREFIX)/bin
 
 check: isutf8
 	./check-isutf8
 
-isutf8.1: isutf8.docbook
-	$(DOCBOOK2XMAN) $<
-
-ifdata.1: ifdata.docbook
-	$(DOCBOOK2XMAN) $<
-
-ifne.1: ifne.docbook
-	$(DOCBOOK2XMAN) $<
-
-pee.1: pee.docbook
-	$(DOCBOOK2XMAN) $<
-
-sponge.1: sponge.docbook
-	$(DOCBOOK2XMAN) $<
-
-mispipe.1: mispipe.docbook
-	$(DOCBOOK2XMAN) $<
-
-lckdo.1: lckdo.docbook
-	$(DOCBOOK2XMAN) $<
-
-parallel.1: parallel.docbook
-	$(DOCBOOK2XMAN) $<
-	
-errno.o: errnos.h
-errnos.h:
-	echo '#include <errno.h>' > dump.c
-	$(CC) -E -dD dump.c | awk '/^#define E/ { printf "{\"%s\",%s},\n", $$2, $$2 }' > errnos.h
-	rm -f dump.c
-	
-errno.1: errno.docbook
-	$(DOCBOOK2XMAN) $<
-
-%.1: %
-	pod2man --center=" " --release="moreutils" $< > $@;
+.docbook.1:
+	$(DOCBOOK2XMAN) ${.IMPSRC}