Fix compilation with non glibc.#21943
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opencv-pushbot merged 2 commits intoopencv:3.4from May 5, 2022
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_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
asmorkalov
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liuxingbaoyu
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May 9, 2022
* 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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_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
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