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Reinstate and simplify parallel auto-detection

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Hugo 2019-10-02 18:11:35 +03:00
parent 74d2767c57
commit 810b61e78f
1 changed files with 9 additions and 0 deletions
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9
setup.py
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@ -326,6 +326,15 @@ class pil_build_ext(build_ext):
if self.debug: if self.debug:
global DEBUG global DEBUG
DEBUG = True DEBUG = True
if not self.parallel:
# If --parallel (or -j) wasn't specified, we want to reproduce the same
# behavior as before, that is, auto-detect the number of jobs.
try:
self.parallel = int(
os.environ.get("MAX_CONCURRENCY", min(4, os.cpu_count()))
)
except TypeError:
self.parallel = None
for x in self.feature: for x in self.feature:
if getattr(self, "disable_%s" % x): if getattr(self, "disable_%s" % x):
setattr(self.feature, x, False) setattr(self.feature, x, False)