Fix compilation if sys/sysctl.h is not present

OpenHEVC / openHEVC

HEVC decoder

http://openhevc.github.io/openHEVC/

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Open jrsnen opened 1 year ago

jrsnen commented 1 year ago

Glibc 2.32 removes sys/sysctl.h. This commit fixes the compilation with newer versions of Glibc by checking for sys/sysctl.h with has_include.