diff -ur substract_wave-0.3.orig/Makefile substract_wave-0.3/Makefile
--- substract_wave-0.3.orig/Makefile	2005-10-06 17:23:42.000000000 +0300
+++ substract_wave-0.3/Makefile	2009-05-11 23:19:30.000000000 +0300
@@ -1,27 +1,22 @@
-#CC=gcc
-#CC=/usr/local/bin/gcc
-
-
-CFLAGS = -O2 -Wall -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64
+CC ?= gcc
+CFLAGS += -Wall -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE64_SOURCE
+LIBRARY = -lm
 
 .c.o:
-	gcc $(CFLAGS) -c $<
+	$(CC) $(CFLAGS) -c $<
 
-OBJECT =\
-substract_wave.o
+OBJECT = substract_wave.o
 
 a.out : $(OBJECT)
-	gcc -o substract_wave  $(OBJECT) $(LIBRARY)
+	$(CC) $(LDFLAGS) $(CFLAGS) $(OBJECT) $(LIBRARY) -o substract_wave
 		
-# DEPENDENCIES
 substract_wave.o : substract_wave.c substract_wave.h wave_header.h
 
-install: 
-	cp substract_wave  /usr/local/bin/
-
-install.man:
-	cp substract_wave.man /usr/local/man/man1/substract_wave.1
+install:
+	mkdir -p $(DESTDIR)/usr/bin
+	cp substract_wave $(DESTDIR)/usr/bin
+	mkdir -p $(DESTDIR)/usr/share/man/man1
+	cp substract_wave.man $(DESTDIR)/usr/share/man/man1/substract_wave.1
 
 clean:
 	rm *.o
-