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# - Check if the system supports epoll.
# CHECK_EPOLL(<var>)
# <var> - variable to store the result
# (1 for success, empty for failure)
#=============================================================================
# This software is in the public domain, furnished "as is", without technical
# support, and with no warranty, express or implied, as to its usefulness for
# any purpose.
#=============================================================================
macro(CHECK_EPOLL VARIABLE)
if(UNIX)
if("${VARIABLE}" MATCHES "^${VARIABLE}$")
message(STATUS "Check if the system supports epoll")
include(CheckSymbolExists)
check_symbol_exists(epoll_create "sys/epoll.h" EPOLL_PROTOTYPE_EXISTS)
if(EPOLL_PROTOTYPE_EXISTS)
message(STATUS "Check if the system supports epoll - yes")
set(${VARIABLE} 1 CACHE INTERNAL "Result of CHECK_EPOLL" FORCE)
else(EPOLL_PROTOTYPE_EXISTS)
message(STATUS "Check if the system supports epoll - no")
set(${VARIABLE} "" CACHE INTERNAL "Result of CHECK_EPOLL" FORCE)
endif(EPOLL_PROTOTYPE_EXISTS)
endif("${VARIABLE}" MATCHES "^${VARIABLE}$")
endif(UNIX)
endmacro(CHECK_EPOLL)
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