From 88dfb98d2385c6e5f49f67efafe55ddac5e674c0 Mon Sep 17 00:00:00 2001
From: Miodrag Milanovic <mmicko@gmail.com>
Date: Sat, 20 Jun 2015 12:39:39 +0200
Subject: [PATCH] Start work on creating tiny builds per driver file included
 (nw)

---
 src/build/makedep.py | 80 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 80 insertions(+)
 create mode 100644 src/build/makedep.py

diff --git a/src/build/makedep.py b/src/build/makedep.py
new file mode 100644
index 00000000000..37dd54cc7c0
--- /dev/null
+++ b/src/build/makedep.py
@@ -0,0 +1,80 @@
+#!/usr/bin/python
+##
+## license:BSD-3-Clause
+## copyright-holders:Miodrag Milanovic
+
+from __future__ import with_statement
+
+import sys
+## to ignore include of emu.h add it always to list
+files_included = ['src/emu/emu.h']
+
+include_dirs = ['src/emu/', 'src/mame/', 'src/mess/']
+
+def file_exists(srcfile, folder):
+    includes = [ folder ]
+    includes.extend(include_dirs)
+    for line in includes:
+        try:
+            fp = open(line + srcfile, 'rb')
+            return line + srcfile
+        except IOError:
+            ignore=1
+    return ''
+
+def parse_file(srcfile, folder):
+    try:
+        fp = open(srcfile, 'rb')
+    except IOError:
+        sys.stderr.write("Unable to open source file '%s'\n" % srcfile)
+        return 1
+    in_comment = 0
+    linenum = 0
+    for line in fp.readlines():
+        content = ''
+        linenum+=1
+        srcptr = 0
+        while srcptr < len(line):
+            c = line[srcptr]
+            srcptr+=1
+            if c==13 or c==10:
+                if c==13 and line[srcptr]==10:
+                    srcptr+=1
+                continue
+            if c==' ' or c==9:
+                continue
+            if in_comment==1 and c=='*' and line[srcptr]=='/' :
+                srcptr+=1
+                in_comment = 0
+                continue
+            if in_comment:
+                continue
+            if c=='/' and line[srcptr]=='*' :
+                srcptr+=1
+                in_comment = 1
+                continue
+            if c=='/' and line[srcptr]=='/' :
+                break
+            content += c
+        content = content.strip()
+        if len(content)>0:
+            if content.startswith('#include'):
+               name = content[8:]
+               name = name.replace('"','')
+               fullname = file_exists(name, folder)
+               if fullname in files_included:
+                   continue
+               if fullname!='':
+                   sys.stderr.write("Includes '%s'\n" % fullname)
+                   files_included.append(fullname)
+                   newfolder = fullname.rsplit('/', 1)[0] + '/'
+                   parse_file(fullname, newfolder)
+               continue
+    return 0
+
+if len(sys.argv) < 2:
+    print('Usage:')
+    print('  makedep <source.c>')
+    sys.exit(0)
+
+parse_file(sys.argv[1],'')