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setup_helpers: try import multiprocessing.synchronize too #3043

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Merged
merged 1 commit into from
Jun 18, 2021
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setup_helpers: try import multiprocessing.synchronize too #3043

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4 changes: 3 additions & 1 deletion pybind11/setup_helpers.py
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Original file line number Diff line number Diff line change
Expand Up @@ -410,7 +410,9 @@ def _single_compile(obj):
compiler._compile(obj, src, ext, cc_args, extra_postargs, pp_opts)

try:
import multiprocessing
# Importing .synchronize checks for platforms that have some multiprocessing
# capabilities but lack semaphores, such as AWS Lambda and Android Termux.
import multiprocessing.synchronize
from multiprocessing.pool import ThreadPool
except ImportError:
threads = 1
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