cmake HAVE_TIMERCMP examples

mongodb/mongo-bi-connector-odbc-driver configure.cmake :513 

CHECK_SYMBOL_EXISTS (timercmp "sys/time.h" HAVE_TIMERCMP)

alibaba/AliSQL configure.cmake :631 

CHECK_SYMBOL_EXISTS (timercmp "sys/time.h" HAVE_TIMERCMP)

alibaba/AliSQLBackup configure.cmake :546 

CHECK_SYMBOL_EXISTS (timercmp "sys/time.h" HAVE_TIMERCMP)