cmake HAVE_READ examples

fluent/fluent-bit lib/jansson-e23f558/CMakeLists.txt :90 

check_function_exists (read HAVE_READ)

glKarin/com.n0n3m4.diii4a Q3E/src/main/jni/deplibs/libsndfile/cmake/SndFileChecks.cmake :160 

check_function_exists (read				HAVE_READ)