Index: .fossil-settings/ignore-glob
==================================================================
--- .fossil-settings/ignore-glob
+++ .fossil-settings/ignore-glob
@@ -16,9 +16,11 @@
 install-sh
 config.log
 config.status
 tweetnacl
 build/tweetnacl/out
+build/tweetnacl/INST
 blake2b
 build/blake2b/out
+build/blake2b/INST
 build/work
 build/tcl

Index: autogen.sh
==================================================================
--- autogen.sh
+++ autogen.sh
@@ -78,15 +78,11 @@
 rm -rf autom4te.cache
 
 set -e
 
 # Assemble tweetnacl
-make -C build/tweetnacl
 rm -rf tweetnacl
-mkdir tweetnacl
-cp build/tweetnacl/out/* tweetnacl/
+make -C build/tweetnacl install PREFIX="$(pwd)/tweetnacl"
 
 # Assemble blake2b
-make -C build/blake2b
 rm -rf blake2b
-mkdir blake2b
-cp build/blake2b/out/* blake2b/
+make -C build/blake2b install PREFIX="$(pwd)/blake2b"

Index: build/blake2b/Makefile
==================================================================
--- build/blake2b/Makefile
+++ build/blake2b/Makefile
@@ -1,5 +1,7 @@
+PREFIX := $(shell pwd)/INST
+
 all: out/blake2b.c out/blake2.h out/blake2-impl.h
 
 out/blake2b.c: src/blake2b-ref.c blake2-nacl.c
 	mkdir -p out
 	cat src/blake2b-ref.c blake2-nacl.c > out/blake2b.c
@@ -10,12 +12,16 @@
 
 out/blake2-impl.h: src/blake2-impl.h
 	mkdir -p out
 	cp src/blake2-impl.h out
 
+install: out/blake2b.c out/blake2.h out/blake2-impl.h
+	mkdir -p '$(PREFIX)'
+	cp out/blake2b.c out/blake2.h out/blake2-impl.h '$(PREFIX)'
+
 clean:
 	rm -f out/blake2b.c out/blake2.h out/blake2-impl.h
 	-rmdir out
 
 distclean: clean
 
-.PHONY: all clean distclean
+.PHONY: all install clean distclean

Index: build/tweetnacl/Makefile
==================================================================
--- build/tweetnacl/Makefile
+++ build/tweetnacl/Makefile
@@ -1,5 +1,7 @@
+PREFIX := $(shell pwd)/INST
+
 all: out/tweetnacl.c out/tweetnacl.h
 
 tweetnacl.h.new: src/tweetnacl.h
 	rm -f tweetnacl.h.new tweetnacl.h
 	cp src/tweetnacl.h tweetnacl.h.new
@@ -19,15 +21,19 @@
 	mv tweetnacl.c out
 
 out/tweetnacl.h: out/tweetnacl.c
 	mv tweetnacl.h out
 
+install: out/tweetnacl.c out/tweetnacl.h
+	mkdir -p '$(PREFIX)'
+	cp out/tweetnacl.c out/tweetnacl.h '$(PREFIX)'
+
 clean:
 	rm -f tweetnacl.c.new.orig tweetnacl.h.new.orig
 	rm -f tweetnacl.h.new tweetnacl.h
 	rm -f tweetnacl.c.new tweetnacl.c
 	rm -f out/tweetnacl.c out/tweetnacl.h
 	-rmdir out
 
 distclean: clean
 
-.PHONY: all clean distclean
+.PHONY: all install clean distclean