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Merge pull request #21943 from vrabaud:3.4_proc

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* Fix compilation with non glibc.

_SC_NPROCESSORS_ONLN is non standard as defined on https://man7.org/linux/man-pages/man3/sysconf.3.html
It seems to only be on glibc, cf https://www.gnu.org/software/libc/manual/html_node/Processor-Resources.html

* Fix to defined(_SC_NPROCESSORS_ONLN)
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Vincent Rabaud 2022-05-05 09:59:29 +02:00 committed by GitHub
parent 039f3d01a0
commit 667e5e4f89
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1 changed files with 1 additions and 1 deletions
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modules/core/src/parallel.cpp
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@ -942,7 +942,7 @@ int getNumberOfCPUs_()
#endif
#if !defined(_WIN32) && !defined(__APPLE__)
#if !defined(_WIN32) && !defined(__APPLE__) && defined(_SC_NPROCESSORS_ONLN)
static unsigned cpu_count_sysconf = (unsigned)sysconf( _SC_NPROCESSORS_ONLN );
ncpus = minNonZero(ncpus, cpu_count_sysconf);