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FindProtobuf: Add PLUGIN parameter to protobuf_generate

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This allows for example reusing the function for generating gRPC code by
specifying which grpc plugin to use.
This commit is contained in:
Frank Lange
2021-04-30 22:56:39 +02:00
committed by Brad King
parent 5cbbe3d301
commit f2a4b879b1
5 changed files with 34 additions and 2 deletions
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8
Modules/FindProtobuf.cmake
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@@ -140,7 +140,7 @@ Example:
function(protobuf_generate)
set(_options APPEND_PATH DESCRIPTORS)
set(_singleargs LANGUAGE OUT_VAR EXPORT_MACRO PROTOC_OUT_DIR)
set(_singleargs LANGUAGE OUT_VAR EXPORT_MACRO PROTOC_OUT_DIR PLUGIN)
if(COMMAND target_sources)
list(APPEND _singleargs TARGET)
endif()
@@ -171,6 +171,10 @@ function(protobuf_generate)
set(_dll_export_decl "dllexport_decl=${protobuf_generate_EXPORT_MACRO}:")
endif()
if(protobuf_generate_PLUGIN)
set(_plugin "--plugin=${protobuf_generate_PLUGIN}")
endif()
if(NOT protobuf_generate_GENERATE_EXTENSIONS)
if(protobuf_generate_LANGUAGE STREQUAL cpp)
set(protobuf_generate_GENERATE_EXTENSIONS .pb.h .pb.cc)
@@ -245,7 +249,7 @@ function(protobuf_generate)
add_custom_command(
OUTPUT ${_generated_srcs}
COMMAND protobuf::protoc
ARGS --${protobuf_generate_LANGUAGE}_out ${_dll_export_decl}${protobuf_generate_PROTOC_OUT_DIR} ${_dll_desc_out} ${_protobuf_include_path} ${_abs_file}
ARGS --${protobuf_generate_LANGUAGE}_out ${_dll_export_decl}${protobuf_generate_PROTOC_OUT_DIR} ${_plugin} ${_dll_desc_out} ${_protobuf_include_path} ${_abs_file}
DEPENDS ${_abs_file} protobuf::protoc
COMMENT "Running ${protobuf_generate_LANGUAGE} protocol buffer compiler on ${_proto}"
VERBATIM )

1
Tests/FindProtobuf/CMakeLists.txt
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@@ -6,5 +6,6 @@ add_test(NAME FindProtobuf.Test COMMAND
${build_generator_args}
--build-project TestFindProtobuf
--build-options ${build_options}
"-DCMake_TEST_FindProtobuf_gRPC=${CMake_TEST_FindProtobuf_gRPC}"
--test-command ${CMAKE_CTEST_COMMAND} -V -C $<CONFIGURATION>
)

13
Tests/FindProtobuf/Test/CMakeLists.txt
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@@ -52,3 +52,16 @@ target_include_directories(test_desc PRIVATE ${CMAKE_CURRENT_BINARY_DIR})
target_link_libraries(test_desc msgs ${Protobuf_LIBRARIES})
target_compile_features(test_desc PRIVATE cxx_std_11)
add_test(NAME test_desc COMMAND test_desc ${DESC_PROTO_DESC})
if(CMake_TEST_FindProtobuf_gRPC)
find_program(gRPC_CPP_PLUGIN grpc_cpp_plugin)
add_library(msgs_grpc msgs/example_service.proto)
target_include_directories(msgs_grpc PUBLIC ${CMAKE_CURRENT_BINARY_DIR})
target_link_libraries(msgs_grpc PUBLIC ${Protobuf_LIBRARIES})
protobuf_generate(TARGET msgs_grpc LANGUAGE cpp)
protobuf_generate(TARGET msgs_grpc LANGUAGE grpc GENERATE_EXTENSIONS .grpc.pb.h .grpc.pb.cc PLUGIN "protoc-gen-grpc=${gRPC_CPP_PLUGIN}")
add_executable(test_generate_grpc main-generate-grpc.cxx)
target_link_libraries(test_generate_grpc PRIVATE msgs_grpc)
add_test(NAME test_generate_grpc COMMAND test_generate_grpc)
endif()

6
Tests/FindProtobuf/Test/main-generate-grpc.cxx Normal file
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@@ -0,0 +1,6 @@
#include <msgs/example_service.grpc.pb.h>
int main()
{
return 0;
}

8
Tests/FindProtobuf/Test/msgs/example_service.proto Normal file
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@@ -0,0 +1,8 @@
syntax = "proto3";
package example.msgs;
import "google/protobuf/empty.proto";
service ExampleService {
rpc nothing(google.protobuf.Empty) returns (google.protobuf.Empty) {}
}