--- ./extra/libevent/CMakeLists.txt.ORIGIN	2019-06-03 18:24:45 -0500
+++ ./extra/libevent/CMakeLists.txt	2019-06-03 18:25:47 -0500
@@ -302,6 +302,9 @@
 if(EVENT__HAVE_SYS_TIME_H)
     list(APPEND CMAKE_EXTRA_INCLUDE_FILES sys/time.h)
 endif()
+if(EVENT__HAVE_SYS_SELECT_H)
+    list(APPEND CMAKE_EXTRA_INCLUDE_FILES sys/select.h)
+endif()
 CHECK_INCLUDE_FILE(sys/uio.h EVENT__HAVE_SYS_UIO_H)
 CHECK_INCLUDE_FILES("sys/types.h;ifaddrs.h" EVENT__HAVE_IFADDRS_H)
 CHECK_INCLUDE_FILE(mach/mach_time.h EVENT__HAVE_MACH_MACH_TIME_H)