From 4f4bce5301ffd8c12aed1b108affa1a75feefb67 Mon Sep 17 00:00:00 2001
From: Jelmer Vernooij <jelmer@samba.org>
Date: Wed, 4 Jan 2012 00:31:27 +0100
Subject: Include waf as an extracted source directory, rather than as a
 one-in-a-file script.

---
 buildtools/wafadmin/3rdparty/gccdeps.py | 128 ++++++++++++++++++++++++++++++++
 1 file changed, 128 insertions(+)
 create mode 100644 buildtools/wafadmin/3rdparty/gccdeps.py

(limited to 'buildtools/wafadmin/3rdparty/gccdeps.py')

diff --git a/buildtools/wafadmin/3rdparty/gccdeps.py b/buildtools/wafadmin/3rdparty/gccdeps.py
new file mode 100644
index 0000000000..6600c9ca3b
--- /dev/null
+++ b/buildtools/wafadmin/3rdparty/gccdeps.py
@@ -0,0 +1,128 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Thomas Nagy, 2008-2010 (ita)
+
+"""
+Execute the tasks with gcc -MD, read the dependencies from the .d file
+and prepare the dependency calculation for the next run
+"""
+
+import os, re, threading
+import Task, Logs, Utils, preproc
+from TaskGen import before, after, feature
+
+lock = threading.Lock()
+
+preprocessor_flag = '-MD'
+
+@feature('cc')
+@before('apply_core')
+def add_mmd_cc(self):
+	if self.env.get_flat('CCFLAGS').find(preprocessor_flag) < 0:
+		self.env.append_value('CCFLAGS', preprocessor_flag)
+
+@feature('cxx')
+@before('apply_core')
+def add_mmd_cxx(self):
+	if self.env.get_flat('CXXFLAGS').find(preprocessor_flag) < 0:
+		self.env.append_value('CXXFLAGS', preprocessor_flag)
+
+def scan(self):
+	"the scanner does not do anything initially"
+	nodes = self.generator.bld.node_deps.get(self.unique_id(), [])
+	names = []
+	return (nodes, names)
+
+re_o = re.compile("\.o$")
+re_src = re.compile("^(\.\.)[\\/](.*)$")
+
+def post_run(self):
+	# The following code is executed by threads, it is not safe, so a lock is needed...
+
+	if getattr(self, 'cached', None):
+		return Task.Task.post_run(self)
+
+	name = self.outputs[0].abspath(self.env)
+	name = re_o.sub('.d', name)
+	txt = Utils.readf(name)
+	#os.unlink(name)
+
+	txt = txt.replace('\\\n', '')
+
+	lst = txt.strip().split(':')
+	val = ":".join(lst[1:])
+	val = val.split()
+
+	nodes = []
+	bld = self.generator.bld
+
+	f = re.compile("^("+self.env.variant()+"|\.\.)[\\/](.*)$")
+	for x in val:
+		if os.path.isabs(x):
+
+			if not preproc.go_absolute:
+				continue
+
+			lock.acquire()
+			try:
+				node = bld.root.find_resource(x)
+			finally:
+				lock.release()
+		else:
+			g = re.search(re_src, x)
+			if g:
+				x = g.group(2)
+				lock.acquire()
+				try:
+					node = bld.bldnode.parent.find_resource(x)
+				finally:
+					lock.release()
+			else:
+				g = re.search(f, x)
+				if g:
+					x = g.group(2)
+					lock.acquire()
+					try:
+						node = bld.srcnode.find_resource(x)
+					finally:
+						lock.release()
+
+		if id(node) == id(self.inputs[0]):
+			# ignore the source file, it is already in the dependencies
+			# this way, successful config tests may be retrieved from the cache
+			continue
+
+		if not node:
+			raise ValueError('could not find %r for %r' % (x, self))
+		else:
+			nodes.append(node)
+
+	Logs.debug('deps: real scanner for %s returned %s' % (str(self), str(nodes)))
+
+	bld.node_deps[self.unique_id()] = nodes
+	bld.raw_deps[self.unique_id()] = []
+
+	try:
+		del self.cache_sig
+	except:
+		pass
+
+	Task.Task.post_run(self)
+
+import Constants, Utils
+def sig_implicit_deps(self):
+	try:
+		return Task.Task.sig_implicit_deps(self)
+	except Utils.WafError:
+		return Constants.SIG_NIL
+
+for name in 'cc cxx'.split():
+	try:
+		cls = Task.TaskBase.classes[name]
+	except KeyError:
+		pass
+	else:
+		cls.post_run = post_run
+		cls.scan = scan
+		cls.sig_implicit_deps = sig_implicit_deps
+
-- 
cgit