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CMake

cmake_minimum_required(VERSION 3.10)
project(SimpleRPCExample CXX)
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
# include source includes
include_directories(${CMAKE_CURRENT_SOURCE_DIR}/src)
include_directories(${CMAKE_CURRENT_SOURCE_DIR}/include)
# find python interpreter
find_package(Python3 COMPONENTS Interpreter REQUIRED)
set(GENERATED_DIR ${CMAKE_BINARY_DIR}/generated)
file(MAKE_DIRECTORY ${GENERATED_DIR})
set(RPC_GENERATOR ${CMAKE_CURRENT_SOURCE_DIR}/tools/generate_rpc.py)
set(RPC_TEMPLATES ${CMAKE_CURRENT_SOURCE_DIR}/tools/templates)
# helper to generate RPC code for an annotated header/source pair
function(autocode_annotated_file OUT_BASENAME HEADER SOURCE)
set(out_proxy_h "${GENERATED_DIR}/${OUT_BASENAME}.proxy.h")
set(out_proxy_cpp "${GENERATED_DIR}/${OUT_BASENAME}.proxy.cpp")
set(out_skeleton_h "${GENERATED_DIR}/${OUT_BASENAME}.skeleton.h")
set(out_skeleton_cpp "${GENERATED_DIR}/${OUT_BASENAME}.skeleton.cpp")
add_custom_command(
OUTPUT
${out_proxy_h}
${out_proxy_cpp}
${out_skeleton_h}
${out_skeleton_cpp}
COMMAND ${CMAKE_COMMAND} -E echo "Generating RPC stubs for ${OUT_BASENAME}..."
COMMAND ${Python3_EXECUTABLE} ${RPC_GENERATOR} --out-dir ${GENERATED_DIR}
--compile-commands ${CMAKE_BINARY_DIR}/compile_commands.json
--templates ${RPC_TEMPLATES}
--header ${HEADER}
--source ${SOURCE}
--out-base ${OUT_BASENAME}
DEPENDS ${RPC_GENERATOR} ${RPC_TEMPLATES}/* ${HEADER} ${SOURCE}
WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
COMMENT "Running RPC code generator for ${OUT_BASENAME}"
VERBATIM
)
# accumulate all generated files into a global property so we can
# have one umbrella target that depends on all of them
set_property(GLOBAL APPEND PROPERTY AUTOCODE_GENERATED_FILES
${out_proxy_h}
${out_proxy_cpp}
${out_skeleton_h}
${out_skeleton_cpp}
)
endfunction()
include_directories(${GENERATED_DIR})
# declare all annotated files here
autocode_annotated_file(MyService
${CMAKE_CURRENT_SOURCE_DIR}/src/MyService.h
${CMAKE_CURRENT_SOURCE_DIR}/src/MyService.cpp
)
# umbrella target that depends on all generated RPC files
get_property(_all_generated GLOBAL PROPERTY AUTOCODE_GENERATED_FILES)
add_custom_target(rpc_generated DEPENDS ${_all_generated})
# Server
add_executable(server
src/server.cpp
src/MyService.cpp
${GENERATED_DIR}/MyService.skeleton.cpp
)
add_dependencies(server rpc_generated)
# Client
add_executable(client
src/client.cpp
${GENERATED_DIR}/MyService.proxy.cpp
)
add_dependencies(client rpc_generated)