--- Makefile.orig	2016-04-14 12:55:22 UTC
+++ Makefile
@@ -1,5 +1,5 @@
-PREFIX = /usr/local
-INSTALL_DIR = $(PREFIX)/lib/lv2
+PREFIX ?= /usr/local
+INSTALL_DIR = $(DESTDIR)$(PREFIX)/lib/lv2
 
 VERSION = 1.0.16
 
@@ -59,7 +59,7 @@ OBJECTS = $(shell echo $(BUILD_PLUGINS) 
 all: util gverb $(OBJECTS)
 
 gverb: gverb/gverb.c gverb/gverbdsp.c gverb/gverb.o gverb/gverbdsp.o
-	(cd gverb && make -w CFLAGS="$(PLUGIN_CFLAGS)" LDFLAGS="$(PLUGIN_LDFLAGS)")
+	(cd gverb && $(MAKE) -w CFLAGS="$(PLUGIN_CFLAGS)" LDFLAGS="$(PLUGIN_LDFLAGS)")
 
 util/pitchscale.o:
 	$(CC) $(PLUGIN_CFLAGS) $(fftw3_CFLAGS) $*.c -c -o $@
@@ -92,8 +92,7 @@ dist-clean:
 real-clean:
 	rm -f plugins/*/*.{c,ttl,$(EXT),o,in} util/*.o gverb/*.o
 
-install:
-	@echo 'use install-user to install in home or install-system to install system wide'
+install: install-system
 
 install-system: INSTALL_DIR_REALLY=$(INSTALL_DIR)
 install-system: all install-really