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Optimize protobuf generation process in CMakeLists.txt. 

Signed-off-by: Tao He <linzhu.ht@alibaba-inc.com>
This commit is contained in:
Tao He 2020-06-09 12:08:09 +08:00 committed by Tao He
parent 72b215a513
commit bb33b76544
3 changed files with 53 additions and 16 deletions
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31
CMakeLists.txt
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@ -10,25 +10,30 @@ find_library(CPPREST_LIB NAMES cpprest)
find_path(CPPREST_INCLUDE_DIR NAMES cpprest/http_client.h)
find_package(Boost REQUIRED COMPONENTS system thread locale random)
if (APPLE)
# If we're on OS X check for Homebrew's copy of OpenSSL instead of Apple's
if (NOT OpenSSL_DIR)
find_program(HOMEBREW brew)
if (HOMEBREW STREQUAL "HOMEBREW-NOTFOUND")
message(WARNING "Homebrew not found: not using Homebrew's OpenSSL")
if (NOT OPENSSL_ROOT_DIR)
message(WARNING "Use -DOPENSSL_ROOT_DIR for non-Apple OpenSSL")
endif()
else()
execute_process(COMMAND brew --prefix openssl
OUTPUT_VARIABLE OPENSSL_ROOT_DIR
OUTPUT_STRIP_TRAILING_WHITESPACE)
endif()
endif()
endif()
find_package(OpenSSL REQUIRED)
find_package(Protobuf REQUIRED)
include(${CMAKE_CURRENT_SOURCE_DIR}/cmake/FindGRPC.cmake)
set(GRPC_LIBRARIES ${GPR_LIBRARY} ${GRPC_LIBRARY} ${GRPC_GRPC++_LIBRARY})
file(GLOB_RECURSE PROTO_SRC RELATIVE "${CMAKE_CURRENT_SOURCE_DIR}/proto" "proto/*.proto")
# Generate protobuf definitions
execute_process(COMMAND ${Protobuf_PROTOC_EXECUTABLE}
-I ${CMAKE_CURRENT_SOURCE_DIR}/proto
--cpp_out=${CMAKE_CURRENT_SOURCE_DIR}/proto
${PROTO_SRC})
execute_process(COMMAND ${Protobuf_PROTOC_EXECUTABLE}
-I ${CMAKE_CURRENT_SOURCE_DIR}/proto
--grpc_out=${CMAKE_CURRENT_SOURCE_DIR}/proto
--plugin=protoc-gen-grpc=${GRPC_CPP_PLUGIN}
${CMAKE_CURRENT_SOURCE_DIR}/proto/rpc.proto
${CMAKE_CURRENT_SOURCE_DIR}/proto/v3lock.proto)
# will set `PROTOBUF_GENERATES`, indicates all generated .cc files, and a target `protobuf_generates`.
add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/proto)
enable_testing()
include_directories(SYSTEM ${CPPREST_INCLUDE_DIR}

31
proto/CMakeLists.txt Normal file
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@ -0,0 +1,31 @@
file(GLOB_RECURSE PROTO_SRCS RELATIVE "${CMAKE_CURRENT_SOURCE_DIR}" "*.proto")
# use `protobuf_generate` rather than `protobuf_generate_cpp` since we want to
# output the generated files to source dir, rather than binary dir.
protobuf_generate(
LANGUAGE cpp
OUT_VAR PROTO_GENERATES
PROTOC_OUT_DIR "${CMAKE_CURRENT_SOURCE_DIR}"
PROTOS ${PROTO_SRCS}
)
grpc_generate_cpp(PROTO_GRPC_GENERATES PROTO_GRPC_GENERATES_HDRS
"${CMAKE_CURRENT_SOURCE_DIR}"
"${CMAKE_CURRENT_SOURCE_DIR}/rpc.proto"
"${CMAKE_CURRENT_SOURCE_DIR}/v3lock.proto"
)
# populate `PROTOBUF_GENERATES` in the parent scope.
set(PROTOBUF_GENERATES)
foreach(cxx_file ${PROTO_GENERATES})
if(cxx_file MATCHES "cc$")
list(APPEND PROTOBUF_GENERATES ${cxx_file})
endif()
endforeach()
foreach(cxx_file ${PROTO_GRPC_GENERATES})
list(APPEND PROTOBUF_GENERATES ${cxx_file})
endforeach()
set(PROTOBUF_GENERATES ${PROTOBUF_GENERATES} PARENT_SCOPE)
set_source_files_properties(${PROTOBUF_GENERATES} PROPERTIES GENERATED TRUE)
add_custom_target(protobuf_generates DEPENDS ${PROTOBUF_GENERATES})

7
src/CMakeLists.txt
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@ -1,10 +1,11 @@
file(GLOB_RECURSE CPP_CLIENT_SRC
RELATIVE "${CMAKE_CURRENT_SOURCE_DIR}"
"${CMAKE_CURRENT_SOURCE_DIR}/*.cpp"
"${CMAKE_CURRENT_SOURCE_DIR}/**/*.cpp"
"${CMAKE_CURRENT_SOURCE_DIR}/../proto/*.cc")
"${CMAKE_CURRENT_SOURCE_DIR}/**/*.cpp")
add_library(etcd-cpp-api SHARED ${CPP_CLIENT_SRC})
set_source_files_properties(${PROTOBUF_GENERATES} PROPERTIES GENERATED TRUE)
add_library(etcd-cpp-api SHARED ${CPP_CLIENT_SRC} ${PROTOBUF_GENERATES})
add_dependencies(etcd-cpp-api protobuf_generates)
set_property(TARGET etcd-cpp-api PROPERTY CXX_STANDARD 11)
target_include_directories(etcd-cpp-api PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/../proto)