1glibc >= 2.32 has removed sys/sysctl.h see 2 3https://sourceware.org/git/?p=glibc.git;a=commit;h=076f09afbac1aa57756faa7a8feadb7936a724e4 4 5This check therefore ensures that its only used on linux when glibc has support for it 6 7Upstream-Status: Pending 8 9Signed-off-by: Khem Raj <raj.khem@gmail.com> 10--- a/ace/config-linux.h 11+++ b/ace/config-linux.h 12@@ -20,6 +20,10 @@ 13 14 #include "ace/config-linux-common.h" 15 16+#if (__GLIBC__ > 2) || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 32) 17+# define ACE_LACKS_SYS_SYSCTL_H 18+#endif 19+ 20 #define ACE_HAS_BYTESEX_H 21 22 #if (defined _XOPEN_SOURCE && (_XOPEN_SOURCE - 0) >= 500) 23