1 files changed, 58 insertions, 0 deletions
diff --git a/dev-util/scons/files/scons-1.2.0-popen.patch b/dev-util/scons/files/scons-1.2.0-popen.patch
new file mode 100644
index 000000000000..23063cffd0c5
--- /dev/null
+++ b/dev-util/scons/files/scons-1.2.0-popen.patch
@@ -0,0 +1,58 @@
+--- engine/SCons/compat/__init__.py (revision 2695)
++++ engine/SCons/compat/__init__.py (working copy)
+@@ -167,11 +167,17 @@
+     del shlex
+     import_as('_scons_shlex', 'shlex')
+ 
+-try:
+-    import subprocess
+-except ImportError:
+-    # Pre-2.4 Python has no subprocess module.
+-    import_as('_scons_subprocess', 'subprocess')
++#try:
++#    import subprocess
++#except ImportError:
++#    # Pre-2.4 Python has no subprocess module.
++#    import_as('_scons_subprocess', 'subprocess')
++
++# Import subprocess unconditionally to avoid possible race conditions in
++# the official subprocess API. If there are API versions without known
++# problems, we can version-check and use the original subprocess module
++# in these cases.
++import_as('_scons_subprocess', 'subprocess')
+ 
+ import sys
+ try:
+
+
+--- engine/SCons/compat/_scons_subprocess.py (revision 2695)
++++ engine/SCons/compat/_scons_subprocess.py (working copy)
+@@ -581,13 +581,19 @@
+     class object:
+         pass
+ 
++import thread
++lock = thread.allocate_lock()
++
+ class Popen(object):
+     def __init__(self, args, bufsize=0, executable=None,
+                  stdin=None, stdout=None, stderr=None,
+                  preexec_fn=None, close_fds=False, shell=False,
+                  cwd=None, env=None, universal_newlines=False,
+                  startupinfo=None, creationflags=0):
+-        """Create new Popen instance."""
++        """Create new Popen instance.
++        Popen is not thread-safe and is therefore protected with a lock.
++        """
++        lock.acquire()
+         _cleanup()
+ 
+         self._child_created = False
+@@ -655,6 +661,7 @@
+                 self.stderr = os.fdopen(errread, 'rU', bufsize)
+             else:
+                 self.stderr = os.fdopen(errread, 'rb', bufsize)
++        lock.release()
+ 
+ 
+     def _translate_newlines(self, data):