scan source files for Makefile dependencies

preprocessing should work with multiple object files now

scan_includes.py

@@ -0,0 +1,27 @@
+# coding: utf-8
+
+# Recursively scan an asm file for rgbasm INCLUDEs and INCBINs.
+# This is used to generate dependencies for each rgbasm object file.
+
+import sys
+
+def scan_for_includes(filename):
+	filenames = []
+	for line in open(filename, 'r').readlines():
+		if 'INCLUDE' in line or 'INCBIN' in line:
+			line = line.split(';')[0]
+			if 'INCLUDE' in line or 'INCBIN' in line:
+				filenames += [line.split('"')[1]]
+	return filenames
+
+def recursive_scan_for_includes(filename):
+	filenames = []
+	if '.asm' in filename or '.tx' in filename:
+		for include in scan_for_includes(filename):
+			filenames += [include] + recursive_scan_for_includes(include)
+	return filenames
+
+if len(sys.argv) > 1:
+	for arg in sys.argv[1:]:
+		sys.stdout.write(' '.join(recursive_scan_for_includes(arg)))
+