forked from OSchip/llvm-project
110 lines
5.1 KiB
CMake
110 lines
5.1 KiB
CMake
# FIXME(kirillbobyrev): Check if gRPC and Protobuf headers can be included at
|
|
# configure time.
|
|
find_package(Threads REQUIRED)
|
|
if (GRPC_INSTALL_PATH)
|
|
# This setup requires gRPC to be built from sources using CMake and installed
|
|
# to ${GRPC_INSTALL_PATH} via -DCMAKE_INSTALL_PREFIX=${GRPC_INSTALL_PATH}.
|
|
# Libraries will be linked according to gRPC build policy which generates
|
|
# static libraries when BUILD_SHARED_LIBS is Off and dynamic libraries when
|
|
# it's On (NOTE: This is a variable passed to gRPC CMake build invocation,
|
|
# LLVM's BUILD_SHARED_LIBS has no effect).
|
|
set(protobuf_MODULE_COMPATIBLE TRUE)
|
|
find_package(Protobuf CONFIG REQUIRED HINTS ${GRPC_INSTALL_PATH})
|
|
message(STATUS "Using protobuf ${protobuf_VERSION}")
|
|
find_package(gRPC CONFIG REQUIRED HINTS ${GRPC_INSTALL_PATH})
|
|
message(STATUS "Using gRPC ${gRPC_VERSION}")
|
|
|
|
include_directories(${Protobuf_INCLUDE_DIRS})
|
|
|
|
# gRPC CMake CONFIG gives the libraries slightly odd names, make them match
|
|
# the conventional system-installed names.
|
|
set_target_properties(protobuf::libprotobuf PROPERTIES IMPORTED_GLOBAL TRUE)
|
|
add_library(protobuf ALIAS protobuf::libprotobuf)
|
|
set_target_properties(gRPC::grpc++ PROPERTIES IMPORTED_GLOBAL TRUE)
|
|
add_library(grpc++ ALIAS gRPC::grpc++)
|
|
|
|
set(GRPC_CPP_PLUGIN $<TARGET_FILE:gRPC::grpc_cpp_plugin>)
|
|
set(PROTOC ${Protobuf_PROTOC_EXECUTABLE})
|
|
else()
|
|
# This setup requires system-installed gRPC and Protobuf.
|
|
# We always link dynamically in this mode. While the static libraries are
|
|
# usually installed, the CMake files telling us *which* static libraries to
|
|
# link are not.
|
|
if (NOT BUILD_SHARED_LIBS)
|
|
message(NOTICE "gRPC and Protobuf will be linked dynamically. If you want static linking, build gRPC from sources with -DBUILD_SHARED_LIBS=Off.")
|
|
endif()
|
|
find_program(GRPC_CPP_PLUGIN grpc_cpp_plugin)
|
|
find_program(PROTOC protoc)
|
|
if (NOT GRPC_CPP_PLUGIN OR NOT PROTOC)
|
|
message(FATAL_ERROR "gRPC C++ Plugin and Protoc must be on $PATH for Clangd remote index build.")
|
|
endif()
|
|
# On macOS the libraries are typically installed via Homebrew and are not on
|
|
# the system path.
|
|
if (${APPLE})
|
|
find_program(HOMEBREW brew)
|
|
# If Homebrew is not found, the user might have installed libraries
|
|
# manually. Fall back to the system path.
|
|
if (HOMEBREW)
|
|
execute_process(COMMAND ${HOMEBREW} --prefix grpc
|
|
OUTPUT_VARIABLE GRPC_HOMEBREW_PATH
|
|
RESULT_VARIABLE GRPC_HOMEBREW_RETURN_CODE
|
|
OUTPUT_STRIP_TRAILING_WHITESPACE)
|
|
execute_process(COMMAND ${HOMEBREW} --prefix protobuf
|
|
OUTPUT_VARIABLE PROTOBUF_HOMEBREW_PATH
|
|
RESULT_VARIABLE PROTOBUF_HOMEBREW_RETURN_CODE
|
|
OUTPUT_STRIP_TRAILING_WHITESPACE)
|
|
# If either library is not installed via Homebrew, fall back to the
|
|
# system path.
|
|
if (GRPC_HOMEBREW_RETURN_CODE EQUAL "0")
|
|
include_directories(${GRPC_HOMEBREW_PATH}/include)
|
|
find_library(GRPC_LIBRARY
|
|
grpc++
|
|
PATHS ${GRPC_HOMEBREW_PATH}/lib
|
|
NO_DEFAULT_PATH
|
|
REQUIRED)
|
|
add_library(grpc++ UNKNOWN IMPORTED GLOBAL)
|
|
set_target_properties(grpc++ PROPERTIES
|
|
IMPORTED_LOCATION ${GRPC_LIBRARY})
|
|
endif()
|
|
if (PROTOBUF_HOMEBREW_RETURN_CODE EQUAL "0")
|
|
include_directories(${PROTOBUF_HOMEBREW_PATH}/include)
|
|
find_library(PROTOBUF_LIBRARY
|
|
protobuf
|
|
PATHS ${PROTOBUF_HOMEBREW_PATH}/lib
|
|
NO_DEFAULT_PATH
|
|
REQUIRED)
|
|
add_library(protobuf UNKNOWN IMPORTED GLOBAL)
|
|
set_target_properties(protobuf PROPERTIES
|
|
IMPORTED_LOCATION ${PROTOBUF_LIBRARY})
|
|
endif()
|
|
endif()
|
|
endif()
|
|
endif()
|
|
|
|
# Proto headers are generated in ${CMAKE_CURRENT_BINARY_DIR}.
|
|
# Libraries that use these headers should adjust the include path.
|
|
# FIXME(kirillbobyrev): Allow optional generation of gRPC code and give callers
|
|
# control over it via additional parameters.
|
|
function(generate_grpc_protos LibraryName ProtoFile)
|
|
get_filename_component(ProtoSourceAbsolutePath "${CMAKE_CURRENT_SOURCE_DIR}/${ProtoFile}" ABSOLUTE)
|
|
get_filename_component(ProtoSourcePath ${ProtoSourceAbsolutePath} PATH)
|
|
|
|
set(GeneratedProtoSource "${CMAKE_CURRENT_BINARY_DIR}/Index.pb.cc")
|
|
set(GeneratedProtoHeader "${CMAKE_CURRENT_BINARY_DIR}/Index.pb.h")
|
|
set(GeneratedGRPCSource "${CMAKE_CURRENT_BINARY_DIR}/Index.grpc.pb.cc")
|
|
set(GeneratedGRPCHeader "${CMAKE_CURRENT_BINARY_DIR}/Index.grpc.pb.h")
|
|
add_custom_command(
|
|
OUTPUT "${GeneratedProtoSource}" "${GeneratedProtoHeader}" "${GeneratedGRPCSource}" "${GeneratedGRPCHeader}"
|
|
COMMAND ${PROTOC}
|
|
ARGS --grpc_out="${CMAKE_CURRENT_BINARY_DIR}"
|
|
--cpp_out="${CMAKE_CURRENT_BINARY_DIR}"
|
|
--proto_path="${ProtoSourcePath}"
|
|
--plugin=protoc-gen-grpc="${GRPC_CPP_PLUGIN}"
|
|
"${ProtoSourceAbsolutePath}"
|
|
DEPENDS "${ProtoSourceAbsolutePath}")
|
|
|
|
add_clang_library(${LibraryName} ${GeneratedProtoSource} ${GeneratedGRPCSource}
|
|
PARTIAL_SOURCES_INTENDED
|
|
LINK_LIBS grpc++ protobuf)
|
|
endfunction()
|