Adding structure to build.

ueforth/Makefile

@@ -1,13 +1,26 @@
-all: out/ueforth
+all: out/web/ueforth.js out/posix/ueforth out/arduino/ueforth.ino
 
-out:
-	mkdir -p out
+out/web:
+	mkdir -p out/web
 
-out/ueforth: ueforth.c | out
-	$(CC) $(CFLAGS) $< -o $@ $(LIBS)
+out/web/ueforth.js: web/fuse_web.js web/web.template.js boot.fs | out/web
+	$^ >$@
+
+out/posix:
+	mkdir -p out/posix
 
 CFLAGS=-O2 -Wall -Werror
 LIBS=-ldl
 
+out/posix/ueforth: ueforth.c | out/posix
+	$(CC) $(CFLAGS) $< -o $@ $(LIBS)
+
+out/arduino:
+	mkdir -p out/arduino
+
+out/arduino/ueforth.ino: arduino/fuse_ino.js \
+        arduino/arduino.template.ino boot.fs | out/arduino
+	$^ >$@
+
 clean:
 	rm -rf out/