--- Makefile.in.orig	1994-12-12 21:21:47.000000000 +0100
+++ Makefile.in	2013-09-24 09:49:45.698631771 +0200
@@ -175,25 +175,13 @@
 	cc -o makeopts makeopts.c
 
 vp_opts.c: makeopts Makefile
-	makeopts vp_opts.c $(CFLAGS)
+	./makeopts vp_opts.c $(CFLAGS)
 
 $(COMP_SRCS): $(COMP_IN)
-	@for i in $(COMP_SRCS) ; \
-	    do \
-		rm -f $$i ;\
-		echo "$(M4) -DSourceFile=$$i $(COMP_IN) > $$i" ;\
-		$(M4) -DSourceFile=$$i $(COMP_IN) > $$i; \
-		chmod -w $$i; \
-	    done
+	$(M4) -DSourceFile=$@ $(COMP_IN) > $@ && chmod -w $@
 
 $(WARP_SRCS): $(WARP_IN)
-	@for i in $(WARP_SRCS) ; \
-	    do \
-		rm -f $$i ;\
-		echo "$(M4) -DSourceFile=$$i $(WARP_IN) > $$i" ;\
-		$(M4) -DSourceFile=$$i $(WARP_IN) > $$i; \
-		chmod -w $$i; \
-	    done
+	$(M4) -DSourceFile=$@ $(WARP_IN) > $@ && chmod -w $@
 
 examples: libvolpack.a
 	cd examples; make
@@ -201,7 +189,7 @@
 install: install-binaries install-include install-man
 
 install-binaries: libvolpack.a
-	@for i in $(LIB_DIR) ; \
+	@for i in $(DESTDIR)$(LIB_DIR) ; \
 	    do \
 	    if [ ! -d $$i ] ; then \
 		echo "Making directory $$i"; \
@@ -211,11 +199,11 @@
 		fi; \
 	    done;
 	@echo "Installing libvolpack.a"
-	@$(INSTALL_DATA) libvolpack.a $(LIB_DIR)
-	@$(RANLIB) $(LIB_DIR)/libvolpack.a
+	@$(INSTALL_DATA) libvolpack.a $(DESTDIR)$(LIB_DIR)
+	@$(RANLIB) $(DESTDIR)$(LIB_DIR)/libvolpack.a
 
 install-include:
-	@for i in $(INCLUDE_DIR) ; \
+	@for i in $(DESTDIR)$(INCLUDE_DIR) ; \
 	    do \
 	    if [ ! -d $$i ] ; then \
 		echo "Making directory $$i"; \
@@ -225,10 +213,10 @@
 		fi; \
 	    done;
 	@echo "Installing volpack.h"
-	@$(INSTALL_DATA) volpack.h $(INCLUDE_DIR)
+	@$(INSTALL_DATA) volpack.h $(DESTDIR)$(INCLUDE_DIR)
 
 install-man:
-	@for i in $(MAN_DIR) $(MAN3_DIR) ; \
+	@for i in $(DESTDIR)$(MAN_DIR) $(DESTDIR)$(MAN3_DIR) ; \
 	    do \
 	    if [ ! -d $$i ] ; then \
 		echo "Making directory $$i"; \
@@ -239,10 +227,9 @@
 	    done;
 	@cd $(SRC_DIR)/man/src; for i in *.3; \
 	    do \
-	    echo "Installing man/src/$$i"; \
-	    rm -f $(MAN3_DIR)/$$i; \
-	    cp $$i $(MAN3_DIR); \
-	    chmod 444 $(MAN3_DIR)/$$i; \
+	    echo "Installing man/src/volpack-$$i"; \
+	    cp $$i $(DESTDIR)$(MAN3_DIR)/volpack-$$i; \
+	    chmod 444 $(DESTDIR)$(MAN3_DIR)/volpack-$$i; \
 	    done;
 
 Makefile: $(SRC_DIR)/Makefile.in