cmake Libev examples

percona/percona-xtrabackup cmake/libev.cmake :18

FIND_PACKAGE(LibEv)

apache/kudu CMakeLists.txt :1130

find_package(LibEv REQUIRED)

hmartiro/redox CMakeLists.txt :43

find_package(libev REQUIRED)

fastogt/fastotv src/CMakeLists.txt :337

FIND_PACKAGE(LibEv REQUIRED)

zhaojh329/rtty src/CMakeLists.txt :7

find_package(Libev REQUIRED)

ngtcp2/ngtcp2 CMakeLists.txt :150

find_package(Libev 4.11)

fluent/fluent-bit lib/nghttp2-1.65.0/CMakeLists.txt :66

find_package(Libev 4.11)

zhaojh329/libuhttpd CMakeLists.txt :26

find_package(Libev REQUIRED)

yugabyte/yugabyte-db cmake_modules/YugabyteFindThirdParty.cmake :176

find_package(LibEv REQUIRED)