diff -ur z88dk/Makefile z88dk-makefile-usr-share/Makefile
--- z88dk/Makefile	2015-02-05 17:11:42.000000000 +0100
+++ z88dk-makefile-usr-share/Makefile	2015-02-22 03:04:49.000000000 +0100
@@ -7,7 +7,7 @@
 
 # ---> Configurable parameters are below his point
 
-prefix = /usr/local
+prefix = /usr
 prefix_share = $(prefix)/share
 
 # The default machine, the lib/config/DEFAULT.cfg file is copied to zcc.cfg
@@ -18,7 +18,7 @@
 all: setup appmake copt zcpp sccz80 z80asm zcc zpragma zx7 z80nm ticks z80svg config
 
 setup:
-	echo '#define PREFIX "${prefix}$"/lib/z88dk"' > src/config.h
+	echo '#define PREFIX "'$(prefix_share)'/z88dk"' > src/config.h
 	echo '#define UNIX 1' >> src/config.h
 
 appmake:
@@ -73,12 +73,12 @@
 	cd libsrc ; $(MAKE) install
 
 install-libs:
-	mkdir -p $(prefix)/lib/z88dk/lib/config
-	cp -R lib/config/* $(prefix)/lib/z88dk/lib/config/
-	find $(prefix)/lib/z88dk/lib/config -type f | xargs chmod 644
-	mkdir -p $(prefix)/lib/z88dk/lib/clibs
-	cp -R lib/clibs/* $(prefix)/lib/z88dk/lib/clibs/
-	find $(prefix)/lib/z88dk/lib/clibs -type f | xargs chmod 644
+	mkdir -p $(DESTDIR)/$(prefix_share)/z88dk/lib/config
+	cp -R lib/config/* $(DESTDIR)/$(prefix_share)/z88dk/lib/config/
+	find $(DESTDIR)/$(prefix_share)/z88dk/lib/config -type f | xargs chmod 644
+	mkdir -p $(DESTDIR)/$(prefix_share)/z88dk/lib/clibs
+	cp -R lib/clibs/* $(DESTDIR)/$(prefix_share)/z88dk/lib/clibs/
+	find $(DESTDIR)/$(prefix_share)/z88dk/lib/clibs -type f | xargs chmod 644
 
 install:
 	mkdir -p -m 755 $(DESTDIR)/$(prefix)/bin $(DESTDIR)/$(prefix_share)/z88dk