cmake HAVE_DECL_SHM_HUGETLB examples

arkdb/inception cmake/os/Linux.cmake :42 

CHECK_SYMBOL_EXISTS(SHM_HUGETLB sys/shm.h  HAVE_DECL_SHM_HUGETLB)

alibaba/AliSQL cmake/os/Linux.cmake :44 

CHECK_SYMBOL_EXISTS(SHM_HUGETLB sys/shm.h  HAVE_DECL_SHM_HUGETLB)

Tokutek/mysql-5.5 cmake/os/Linux.cmake :45 

CHECK_SYMBOL_EXISTS(SHM_HUGETLB sys/shm.h  HAVE_DECL_SHM_HUGETLB)