--- a/CMakeLists.txt	Tue Aug 29 22:24:15 2017
+++ b/CMakeLists.txt	Mon Sep 04 00:43:56 2017
@@ -4574,6 +4574,8 @@
 
 endif (gRPC_BUILD_TESTS)
 
+option(gRPC_INSTALL_CSHARP_EXT "" ON)
+
 add_library(grpc_csharp_ext SHARED
   src/csharp/ext/grpc_csharp_ext.c
 )
@@ -4582,7 +4584,7 @@
   set_target_properties(grpc_csharp_ext PROPERTIES COMPILE_PDB_NAME "grpc_csharp_ext"
     COMPILE_PDB_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}"
   )
-  if (gRPC_INSTALL)
+  if (gRPC_INSTALL AND gRPC_INSTALL_CSHARP_EXT)
     install(FILES ${CMAKE_CURRENT_BINARY_DIR}/grpc_csharp_ext.pdb
       DESTINATION ${gRPC_INSTALL_LIBDIR} OPTIONAL
     )
@@ -4613,7 +4615,7 @@
 
 
 
-if (gRPC_INSTALL)
+if (gRPC_INSTALL AND gRPC_INSTALL_CSHARP_EXT)
   install(TARGETS grpc_csharp_ext EXPORT gRPCTargets
     RUNTIME DESTINATION ${gRPC_INSTALL_BINDIR}
     LIBRARY DESTINATION ${gRPC_INSTALL_LIBDIR}