From 2c07515907da1b071c4a5e64e66249d9ff8ba7aa Mon Sep 17 00:00:00 2001
From: "James R. Barlow" <jim@purplerock.ca>
Date: Sun, 26 Apr 2020 03:33:31 -0700
Subject: [PATCH] macOS - use spawn for multiprocessing

See bpo-33725. This is the default for 3.8, opt-in for 3.7 and older.
---
 src/ocrmypdf/__main__.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/ocrmypdf/__main__.py b/src/ocrmypdf/__main__.py
index 459b3040..5d3a5d50 100755
--- a/src/ocrmypdf/__main__.py
+++ b/src/ocrmypdf/__main__.py
@@ -19,6 +19,7 @@
 import logging
 import os
 import sys
+from multiprocessing import set_start_method
 
 from . import __version__
 from ._sync import run_pipeline
@@ -66,4 +67,6 @@ def run(args=None):
 
 
 if __name__ == '__main__':
+    if sys.platform == 'darwin' and sys.version_info < (3, 8):
+        set_start_method('spawn')  # see python bpo-33725
     sys.exit(run())