Allow EPOLLEXCLUSIVE tests to be omitted outside of CI
diff --git a/CMakeLists.txt b/CMakeLists.txt
index e1513ee..a3fd5b4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -346,6 +346,7 @@
 
 add_custom_target(tools_c
   DEPENDS
+  check_epollexclusive
   gen_hpack_tables
   gen_legal_metadata_characters
   gen_percent_encoding_tables
@@ -946,6 +947,7 @@
   src/core/lib/iomgr/iomgr_posix.c
   src/core/lib/iomgr/iomgr_uv.c
   src/core/lib/iomgr/iomgr_windows.c
+  src/core/lib/iomgr/is_epollexclusive_available.c
   src/core/lib/iomgr/load_file.c
   src/core/lib/iomgr/lockfree_event.c
   src/core/lib/iomgr/network_status_tracker.c
@@ -1272,6 +1274,7 @@
   src/core/lib/iomgr/iomgr_posix.c
   src/core/lib/iomgr/iomgr_uv.c
   src/core/lib/iomgr/iomgr_windows.c
+  src/core/lib/iomgr/is_epollexclusive_available.c
   src/core/lib/iomgr/load_file.c
   src/core/lib/iomgr/lockfree_event.c
   src/core/lib/iomgr/network_status_tracker.c
@@ -1583,6 +1586,7 @@
   src/core/lib/iomgr/iomgr_posix.c
   src/core/lib/iomgr/iomgr_uv.c
   src/core/lib/iomgr/iomgr_windows.c
+  src/core/lib/iomgr/is_epollexclusive_available.c
   src/core/lib/iomgr/load_file.c
   src/core/lib/iomgr/lockfree_event.c
   src/core/lib/iomgr/network_status_tracker.c
@@ -1840,6 +1844,7 @@
   src/core/lib/iomgr/iomgr_posix.c
   src/core/lib/iomgr/iomgr_uv.c
   src/core/lib/iomgr/iomgr_windows.c
+  src/core/lib/iomgr/is_epollexclusive_available.c
   src/core/lib/iomgr/load_file.c
   src/core/lib/iomgr/lockfree_event.c
   src/core/lib/iomgr/network_status_tracker.c
@@ -2260,6 +2265,7 @@
   src/core/lib/iomgr/iomgr_posix.c
   src/core/lib/iomgr/iomgr_uv.c
   src/core/lib/iomgr/iomgr_windows.c
+  src/core/lib/iomgr/is_epollexclusive_available.c
   src/core/lib/iomgr/load_file.c
   src/core/lib/iomgr/lockfree_event.c
   src/core/lib/iomgr/network_status_tracker.c
@@ -2586,6 +2592,7 @@
   src/core/lib/iomgr/iomgr_posix.c
   src/core/lib/iomgr/iomgr_uv.c
   src/core/lib/iomgr/iomgr_windows.c
+  src/core/lib/iomgr/is_epollexclusive_available.c
   src/core/lib/iomgr/load_file.c
   src/core/lib/iomgr/lockfree_event.c
   src/core/lib/iomgr/network_status_tracker.c
@@ -3351,6 +3358,7 @@
   src/core/lib/iomgr/iomgr_posix.c
   src/core/lib/iomgr/iomgr_uv.c
   src/core/lib/iomgr/iomgr_windows.c
+  src/core/lib/iomgr/is_epollexclusive_available.c
   src/core/lib/iomgr/load_file.c
   src/core/lib/iomgr/lockfree_event.c
   src/core/lib/iomgr/network_status_tracker.c
@@ -5045,6 +5053,42 @@
 )
 
 endif (gRPC_BUILD_TESTS)
+
+add_executable(check_epollexclusive
+  test/build/check_epollexclusive.c
+)
+
+
+target_include_directories(check_epollexclusive
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+  PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PRIVATE ${BORINGSSL_ROOT_DIR}/include
+  PRIVATE ${PROTOBUF_ROOT_DIR}/src
+  PRIVATE ${BENCHMARK_ROOT_DIR}/include
+  PRIVATE ${ZLIB_ROOT_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib
+  PRIVATE ${CARES_BUILD_INCLUDE_DIR}
+  PRIVATE ${CARES_INCLUDE_DIR}
+  PRIVATE ${CARES_PLATFORM_INCLUDE_DIR}
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/cares/cares
+  PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/third_party/gflags/include
+)
+
+target_link_libraries(check_epollexclusive
+  ${_gRPC_ALLTARGETS_LIBRARIES}
+  grpc
+  gpr
+)
+
+
+if (gRPC_INSTALL)
+  install(TARGETS check_epollexclusive EXPORT gRPCTargets
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+  )
+endif()
+
 if (gRPC_BUILD_TESTS)
 
 add_executable(chttp2_hpack_encoder_test