Merge pull request #8353 from lpetre:backport_3593

backport of PR #3593

modules/core/src/parallel.cpp

@@ -56,7 +56,7 @@
     #include <sys/types.h>
     #if defined ANDROID
         #include <sys/sysconf.h>
-    #else
+    #elif defined __APPLE__
         #include <sys/sysctl.h>
     #endif
 #endif

modules/core/src/system.cpp

@@ -163,8 +163,6 @@ std::wstring GetTempFileNameWinRT(std::wstring prefix)
 #include <sys/types.h>
 #if defined ANDROID
 #include <sys/sysconf.h>
-#else
-#include <sys/sysctl.h>
 #endif
 #endif
 

modules/highgui/src/cap_ffmpeg_impl.hpp

@@ -129,9 +129,9 @@ extern "C" {
     #include <unistd.h>
     #include <stdio.h>
     #include <sys/types.h>
-    #include <sys/sysctl.h>
     #include <sys/time.h>
 #if defined __APPLE__
+    #include <sys/sysctl.h>
     #include <mach/clock.h>
     #include <mach/mach.h>
 #endif