--- Makefile.orig	1999-03-23 03:20:32.000000000 +0100
+++ Makefile	2008-01-27 23:44:28.000000000 +0100
@@ -1,8 +1,9 @@
-CC     = gcc
-CFLAGS = -O2
-INCDIR = -I/usr/X11R6/include/X11
-DESTDIR= /usr/X11R6
-LIBDIR = -L/usr/X11R6/lib
+CC     ?= gcc
+CFLAGS += 
+INCDIR = -I/usr/include/X11
+PREFIX ?= /usr
+LIBDIR ?= /usr/lib
+MANDIR = $(PREFIX)/share/man
 
 # for Linux
 LIBS   = -lXpm -lX11 -lXext
@@ -22,7 +23,7 @@
 
 wmMoonClock.o: wmMoonClock_master.xpm wmMoonClock_mask.xbm CalcEphem.h
 wmMoonClock:	$(OBJS) 
-	$(CC) $(COPTS) $(SYSTEM) -lm -o wmMoonClock $^ $(INCDIR) $(LIBDIR) $(LIBS)
+	$(CC) $(COPTS) $(SYSTEM) -o wmMoonClock $^ $(INCDIR) -L$(LIBDIR) $(LDFLAGS) $(LIBS) -lm
 
 clean:
 	for i in $(OBJS) ; do \
@@ -31,6 +32,7 @@
 	rm -f wmMoonClock
 
 install:: wmMoonClock
-	install -s -m 0755 wmMoonClock $(DESTDIR)/bin
-	install    -m 0644 wmMoonClock.1 $(DESTDIR)/man/man1 
+	install -d $(DESTDIR)$(PREFIX)/bin $(DESTDIR)$(MANDIR)/man1
+	install -m 0755 wmMoonClock $(DESTDIR)$(PREFIX)/bin
+	install -m 0644 wmMoonClock.1 $(DESTDIR)$(MANDIR)/man1