Index: libscrypt-1/Makefile
===================================================================
--- libscrypt-1.orig/Makefile	2013-07-04 09:31:54.000000000 -0400
+++ libscrypt-1/Makefile	2013-07-04 09:44:12.744610549 -0400
@@ -1,3 +1,9 @@
+PREFIX       = /usr/local
+LIBDIR       = $(PREFIX)/lib
+INCLUDEDIR   = $(PREFIX)/include
+MAKE_DIR     = install -d
+INSTALL_DATA = install -m 0644
+
 CC=gcc
 CFLAGS=-O2 -Wall -g -D_FORTIFY_SOURCE=2 -fstack-protector -fPIC
 all: reference
@@ -26,7 +32,8 @@
 	valgrind ./reference
 
 install: library
-	install -m 0644 libscrypt.a $(DESTDIR)/usr/local/lib
-	install -m 0644 libscrypt.so.0 $(DESTDIR)/usr/local/lib
-	ln -s -f $(DESTDIR)/usr/local/lib/libscrypt.so.0 $(DESTDIR)/usr/local/lib/libscrypt.so
-	install -m 0644 libscrypt.h  $(DESTDIR)/usr/local/include
+	$(MAKE_DIR) $(DESTDIR) $(DESTDIR)$(PREFIX) $(DESTDIR)$(LIBDIR) $(DESTDIR)$(INCLUDEDIR)
+	$(INSTALL_DATA) libscrypt.a $(DESTDIR)$(LIBDIR)
+	$(INSTALL_DATA) libscrypt.so.0 $(DESTDIR)$(LIBDIR)
+	ln -s -f $(DESTDIR)$(LIBDIR)/libscrypt.so.0 $(DESTDIR)$(LIBDIR)/libscrypt.so
+	$(INSTALL_DATA) libscrypt.h  $(DESTDIR)$(INCLUDEDIR)
