Rocksdb: Add missing getauxval() test for Linux

Author: brad0

cmake/os/WindowsCache.cmake

@@ -361,4 +361,5 @@ SET(HAVE_LINUX_UNISTD_H CACHE INTERNAL "")
 SET(OFF64_T CACHE INTERNAL "")
 SET(Z_HAVE_UNISTD_H CACHE INTERNAL "")
 SET(HAVE_OFF64_T CACHE FALSE INTERNAL "")
+SET(HAVE_AUXV_GETAUXVAL CACHE INTERNAL "")
 ENDIF(MSVC)

storage/rocksdb/CMakeLists.txt

@@ -39,6 +39,11 @@ IF(HAVE_SCHED_GETCPU)
   ADD_DEFINITIONS(-DHAVE_SCHED_GETCPU=1 -DROCKSDB_SCHED_GETCPU_PRESENT)
 ENDIF()
 
+CHECK_FUNCTION_EXISTS(getauxval  HAVE_AUXV_GETAUXVAL)
+IF(HAVE_AUXV_GETAUXVAL)
+  ADD_DEFINITIONS(-DROCKSDB_AUXV_GETAUXVAL_PRESENT)
+ENDIF()
+
 IF(WITH_VALGRIND)
   ADD_DEFINITIONS(-DROCKSDB_VALGRIND_RUN=1)
 ENDIF()