diff --git a/Doc/library/multiprocessing.rst b/Doc/library/multiprocessing.rst
index 8454296b815b41..fece0b83cace01 100644
--- a/Doc/library/multiprocessing.rst
+++ b/Doc/library/multiprocessing.rst
@@ -216,13 +216,6 @@ A library which wants to use a particular start method should probably
use :func:`get_context` to avoid interfering with the choice of the
library user.
-.. warning::
-
- The ``'spawn'`` and ``'forkserver'`` start methods generally cannot
- be used with "frozen" executables (i.e., binaries produced by
- packages like **PyInstaller** and **cx_Freeze**) on POSIX systems.
- The ``'fork'`` start method may work if code does not use threads.
-
Exchanging objects between processes
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -1015,7 +1008,7 @@ Miscellaneous
.. function:: freeze_support()
Add support for when a program which uses :mod:`multiprocessing` has been
- frozen to produce a Windows executable. (Has been tested with **py2exe**,
+ frozen to produce an executable. (Has been tested with **py2exe**,
**PyInstaller** and **cx_Freeze**.)
One needs to call this function straight after the ``if __name__ ==
@@ -1033,10 +1026,8 @@ Miscellaneous
If the ``freeze_support()`` line is omitted then trying to run the frozen
executable will raise :exc:`RuntimeError`.
- Calling ``freeze_support()`` has no effect when invoked on any operating
- system other than Windows. In addition, if the module is being run
- normally by the Python interpreter on Windows (the program has not been
- frozen), then ``freeze_support()`` has no effect.
+ If the module is being run normally by the Python interpreter (the program
+ has not been frozen), then ``freeze_support()`` has no effect.
.. function:: get_all_start_methods()
diff --git a/Lib/multiprocessing/context.py b/Lib/multiprocessing/context.py
index de8a264829dff3..df06aaf52a8edc 100644
--- a/Lib/multiprocessing/context.py
+++ b/Lib/multiprocessing/context.py
@@ -145,7 +145,7 @@ def freeze_support(self):
'''Check whether this is a fake forked process in a frozen executable.
If so then run code specified by commandline and exit.
'''
- if sys.platform == 'win32' and getattr(sys, 'frozen', False):
+ if getattr(sys, 'frozen', False):
from .spawn import freeze_support
freeze_support()
diff --git a/Lib/multiprocessing/spawn.py b/Lib/multiprocessing/spawn.py
index 09f8a229d7cccb..fdc8597ad05d41 100644
--- a/Lib/multiprocessing/spawn.py
+++ b/Lib/multiprocessing/spawn.py
@@ -66,6 +66,15 @@ def freeze_support():
'''
Run code for process object if this in not the main process
'''
+ if (
+ len(sys.argv) >= 2 and sys.argv[-2] == '-c' and sys.argv[-1].startswith((
+ 'from multiprocessing.resource_tracker import main',
+ 'from multiprocessing.forkserver import main'
+ )) and set(sys.argv[1:-2]) == set(util._args_from_interpreter_flags())
+ ):
+ exec(sys.argv[-1])
+ sys.exit()
+
if is_forking(sys.argv):
kwds = {}
for arg in sys.argv[2:]:
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-05-18-09-43-02.gh-issue-76327.tHxKwf.rst b/Misc/NEWS.d/next/Core and Builtins/2023-05-18-09-43-02.gh-issue-76327.tHxKwf.rst
new file mode 100644
index 00000000000000..126ec176c5a7bc
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2023-05-18-09-43-02.gh-issue-76327.tHxKwf.rst
@@ -0,0 +1,2 @@
+Fix multiprocessing support for frozen executable on non-Windows platforms.
+Remove outdated warning in document.
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