make helloworld CMakeLists compile on windows

1 files changed, 19 insertions, 4 deletions

diff --git a/examples/cpp/helloworld/CMakeLists.txt b/examples/cpp/helloworld/CMakeLists.txt
index 71a8db4f24..a1869d21bb 100644
--- a/examples/cpp/helloworld/CMakeLists.txt
+++ b/examples/cpp/helloworld/CMakeLists.txt
@@ -6,13 +6,28 @@ project(HelloWorld C CXX)
 

 if(NOT MSVC)

   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")

+else()

+  add_definitions(-D_WIN32_WINNT=0x600)

 endif()

 

 # Protobuf

-set(protobuf_MODULE_COMPATIBLE TRUE)

-find_package(protobuf CONFIG REQUIRED)

+# NOTE: we cannot use "CONFIG" mode here because protobuf-config.cmake

+# is broken when used with CMAKE_INSTALL_PREFIX

+find_package(protobuf REQUIRED)

 message(STATUS "Using protobuf ${protobuf_VERSION}")

 

+if(Protobuf_FOUND)

+  # Protobuf_FOUND is set for package type "CONFIG"

+  set(_PROTOBUF_LIBPROTOBUF protobuf::libprotobuf)

+  set(_PROTOBUF_PROTOC protobuf::protoc)

+endif()

+if(PROTOBUF_FOUND)

+  # PROTOBUF_FOUND is set for package type "MODULE"

+  set(_PROTOBUF_LIBPROTOBUF ${PROTOBUF_LIBRARIES})

+  set(_PROTOBUF_PROTOC ${PROTOBUF_PROTOC_EXECUTABLE})

+  include_directories(${PROTOBUF_INCLUDE_DIRS})

+endif()

+

 # gRPC

 find_package(gRPC CONFIG REQUIRED)

 message(STATUS "Using gRPC ${gRPC_VERSION}")

@@ -31,7 +46,7 @@ set(hw_grpc_srcs "${CMAKE_CURRENT_BINARY_DIR}/helloworld.grpc.pb.cc")
 set(hw_grpc_hdrs "${CMAKE_CURRENT_BINARY_DIR}/helloworld.grpc.pb.h")

 add_custom_command(

       OUTPUT "${hw_grpc_srcs}" "${hw_grpc_hdrs}"

-      COMMAND protobuf::protoc

+      COMMAND ${_PROTOBUF_PROTOC}

       ARGS --grpc_out "${CMAKE_CURRENT_BINARY_DIR}" -I "${hw_proto_path}"

         --plugin=protoc-gen-grpc="${gRPC_CPP_PLUGIN_EXECUTABLE}"

         "${hw_proto}"

@@ -48,6 +63,6 @@ foreach(_target
     ${hw_proto_srcs}

     ${hw_grpc_srcs})

   target_link_libraries(${_target}

-    protobuf::libprotobuf

+    ${_PROTOBUF_LIBPROTOBUF}

     gRPC::grpc++_unsecure)

 endforeach()