[BugFix] fix build issue on mac OS (#4175)

* [BugFix] fix build issue on mac OS * refine

[BugFix] fix build issue on mac OS (#4175)
* [BugFix] fix build issue on mac OS * refine
15188611 · Rhett Ying · GitHub · cb39dbfa · 15188611
Unverified Commit 15188611 authored Jun 28, 2022 by Rhett Ying Committed by GitHub Jun 28, 2022
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CMakeLists.txt CMakeLists.txt +4 -2

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--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -124,10 +124,12 @@ endif(USE_AVX)

 if ((NOT MSVC) AND USE_EPOLL)
  INCLUDE(CheckIncludeFile)
-  check_include_file("sys/epoll.h" USE_EPOLL)
-  if (USE_EPOLL)
+  check_include_file("sys/epoll.h" EPOLL_AVAILABLE)
+  if (EPOLL_AVAILABLE)
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DUSE_EPOLL")
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DUSE_EPOLL")
+  else()
+    message(WARNING "EPOLL is not available on this platform...")
  endif()
 endif ()