cmake integration

[Stéphane Ancelot]

Hi !

From my viewpoint cmake integration is really a pain !

I used the quickstart to build and deploy grpc ... fine ...

Now I want to use it in my project to build proto files.

I used this cmake snippet to build it :

# https://www.f-ax.de/dev/2020/11/08/grpc-plugin-cmake-support.html

find_package(absl CONFIG REQUIRED PATHS /opt/grpc)

find_package(utf8_range CONFIG HINTS /opt/grpc REQUIRED)

find_package(protobuf CONFIG HINTS /opt/grpc REQUIRED)

find_package(gRPC CONFIG REQUIRED PATHS /opt/grpc)

find_package(Threads)

add_library(myproto ${PROTO_FILES})

target_link_libraries(myproto

PUBLIC

protobuf::libprotobuf

gRPC::grpc

gRPC::grpc++

)

target_include_directories(myproto PUBLIC ${CMAKE_CURRENT_BINARY_DIR})

#

# Compile protobuf and grpc files in myproto target to cpp

get_target_property(grpc_cpp_plugin_location gRPC::grpc_cpp_plugin IMPORTED)

message("status cpp plugin ${grpc_cpp_plugin_location}")

protobuf_generate(TARGET myproto LANGUAGE cpp)

protobuf_generate(TARGET myproto LANGUAGE grpc GENERATE_EXTENSIONS .grpc.pb.h .grpc.pb.cc PLUGIN "protoc-gen-grpc=${grpc_cpp_plugin_location}")

unfortunately the grpc_cpp_plugin_location variable is equal to TRUE ....

and thus it does not work.

What is the straight way to use cmake with gRPC ??

Regards

Steph