Update Makefile: build all *.c files to *.lx files

Makefile

@@ -1,23 +1,28 @@
 ### ==========================================================================
-###  $Id: Makefile,v 1.7 2002/10/17 05:05:40 stephmo Exp $
-###  FILE: demo/Makefile - make the C Language Demo Programs
+###  Based on demo/Makefile (C Language Demo Programs), v 1.7 2002/10/17
 ###  brickOS - the independent LEGO Mindstorms OS
 ### --------------------------------------------------------------------------
 
 # name for the brickOS kernel
 LIBDIR = /usr/lib/brickos
 KERNEL = $(LIBDIR)/brickOS
 
-PROGRAMS=helloworld.lx
+# Find all .c files and replace the .c extension with .lx
+SOURCES = $(wildcard *.c)
+PROGRAMS = $(SOURCES:.c=.lx)
 
 # extra dynamic sources
 DOBJECTS=
 
-all:: $(PROGRAMS) 
+all:: $(PROGRAMS)
 
 include $(LIBDIR)/Makefile.common
 include $(LIBDIR)/Makefile.user
 
+# Rule to compile .c files to .lx files
+%.lx: %.c
+	$(CC) $(CFLAGS) -o $@ $< $(LDFLAGS)
+
 .depend: *.c
 	$(MAKEDEPEND) *.c > .depend
 
@@ -41,7 +46,7 @@ realclean:: clean
 
 .PHONY: all depend tag clean realclean
 
-# depencencies
+# dependencies
 #
 ifndef NODEPS
 include .depend