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ThriftLibrary.cmake
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ThriftLibrary.cmake
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# Copyright (c) Meta Platforms, Inc. and affiliates.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# Requirements:
# Please provide the following two variables before using these macros:
# ${THRIFT1} - path/to/bin/thrift1
# ${THRIFTCPP2} - path/to/lib/thriftcpp2
#
#
# thrift_object
# This creates a object that will contain the source files and all the proper
# dependencies to generate and compile thrift generated files
#
# Params:
# @file_name - The name of the thrift file
# @services - A list of services that are declared in the thrift file
# @language - The generator to use (cpp or cpp2)
# @options - Extra options to pass to the generator
# @file_path - The directory where the thrift file lives
# @output_path - The directory where the thrift objects will be built
# @include_prefix - The last part of output_path, relative include prefix
#
# Output:
# A object file named `${file-name}-${language}-obj` to include into your
# project's library
#
# Notes:
# If any of the fields is empty, it is still required to provide an empty string
#
# Usage:
# thrift_object(
# #file_name
# #services
# #language
# #options
# #file_path
# #output_path
# #include_prefix
# )
# add_library(somelib $<TARGET_OBJECTS:${file_name}-${language}-obj> ...)
#
macro(thrift_object
file_name
services
language
options
file_path
output_path
include_prefix
)
thrift_generate(
"${file_name}"
"${services}"
"${language}"
"${options}"
"${file_path}"
"${output_path}"
"${include_prefix}"
"${ARGN}"
)
bypass_source_check(${${file_name}-${language}-SOURCES})
add_library(
"${file_name}-${language}-obj"
OBJECT
${${file_name}-${language}-SOURCES}
)
add_dependencies(
"${file_name}-${language}-obj"
"${file_name}-${language}-target"
)
message("Thrift will create the Object file : ${file_name}-${language}-obj")
endmacro()
# thrift_library
# Same as thrift object in terms of usage but creates the library instead of
# object so that you can use to link against your library instead of including
# all symbols into your library
#
# Params:
# @file_name - The name of the thrift file
# @services - A list of services that are declared in the thrift file
# @language - The generator to use (cpp or cpp2)
# @options - Extra options to pass to the generator
# @file_path - The directory where the thrift file lives
# @output_path - The directory where the thrift objects will be built
# @include_prefix - The last part of output_path, relative include prefix
#
# Output:
# A library file named `${file-name}-${language}` to link against your
# project's library
#
# Notes:
# If any of the fields is empty, it is still required to provide an empty string
#
# Usage:
# thrift_library(
# #file_name
# #services
# #language
# #options
# #file_path
# #output_path
# #include_prefix
# )
# add_library(somelib ...)
# target_link_libraries(somelibe ${file_name}-${language} ...)
#
macro(thrift_library
file_name
services
language
options
file_path
output_path
include_prefix
)
thrift_object(
"${file_name}"
"${services}"
"${language}"
"${options}"
"${file_path}"
"${output_path}"
"${include_prefix}"
"${ARGN}"
)
add_library(
"${file_name}-${language}"
$<TARGET_OBJECTS:${file_name}-${language}-obj>
)
target_link_libraries("${file_name}-${language}" ${THRIFTCPP2})
message("Thrift will create the Library file : ${file_name}-${language}")
endmacro()
#
# bypass_source_check
# This tells cmake to ignore if it doesn't see the following sources in
# the library that will be installed. Thrift files are generated at compile
# time so they do not exist at source check time
#
# Params:
# @sources - The list of files to ignore in source check
#
macro(bypass_source_check sources)
set_source_files_properties(
${sources}
PROPERTIES GENERATED TRUE
)
endmacro()
#
# thrift_generate
# This is used to codegen thrift files using the thrift compiler
# Params:
# @file_name - The name of tge thrift file
# @services - A list of services that are declared in the thrift file
# @language - The generator to use (cpp, cpp2 or py3)
# @options - Extra options to pass to the generator
# @output_path - The directory where the thrift file lives
#
# Output:
# file-language-target - A custom target to add a dependenct
# ${file-language-HEADERS} - The generated Header Files.
# ${file-language-SOURCES} - The generated Source Files.
#
# Notes:
# If any of the fields is empty, it is still required to provide an empty string
#
# When using file_language-SOURCES it should always call:
# bypass_source_check(${file_language-SOURCES})
# This will prevent cmake from complaining about missing source files
#
macro(thrift_generate
file_name
services
language
options
file_path
output_path
include_prefix
)
cmake_parse_arguments(THRIFT_GENERATE # Prefix
"" # Options
"" # One Value args
"THRIFT_INCLUDE_DIRECTORIES" # Multi-value args
"${ARGN}")
set(thrift_include_directories)
foreach(dir ${THRIFT_GENERATE_THRIFT_INCLUDE_DIRECTORIES})
list(APPEND thrift_include_directories "-I" "${dir}")
endforeach()
set("${file_name}-${language}-HEADERS"
${output_path}/gen-${language}/${file_name}_constants.h
${output_path}/gen-${language}/${file_name}_data.h
${output_path}/gen-${language}/${file_name}_metadata.h
${output_path}/gen-${language}/${file_name}_types.h
${output_path}/gen-${language}/${file_name}_types.tcc
)
set("${file_name}-${language}-SOURCES"
${output_path}/gen-${language}/${file_name}_constants.cpp
${output_path}/gen-${language}/${file_name}_data.cpp
${output_path}/gen-${language}/${file_name}_types.cpp
)
if(NOT "${options}" MATCHES "no_metadata")
set("${file_name}-${language}-SOURCES"
${${file_name}-${language}-SOURCES}
${output_path}/gen-${language}/${file_name}_metadata.cpp
)
endif()
foreach(service ${services})
set("${file_name}-${language}-HEADERS"
${${file_name}-${language}-HEADERS}
${output_path}/gen-${language}/${service}.h
${output_path}/gen-${language}/${service}.tcc
${output_path}/gen-${language}/${service}AsyncClient.h
${output_path}/gen-${language}/${service}_custom_protocol.h
)
set("${file_name}-${language}-SOURCES"
${${file_name}-${language}-SOURCES}
${output_path}/gen-${language}/${service}.cpp
${output_path}/gen-${language}/${service}AsyncClient.cpp
)
endforeach()
if("${include_prefix}" STREQUAL "")
set(include_prefix_text "")
else()
set(include_prefix_text "include_prefix=${include_prefix}")
if(NOT "${options}" STREQUAL "")
set(include_prefix_text ",${include_prefix_text}")
endif()
endif()
set(gen_language ${language})
if("${language}" STREQUAL "cpp2")
set(gen_language "mstch_cpp2")
elseif("${language}" STREQUAL "py3")
set(gen_language "mstch_py3")
file(WRITE "${output_path}/gen-${language}/${file_name}/__init__.py")
endif()
add_custom_command(
OUTPUT ${${file_name}-${language}-HEADERS}
${${file_name}-${language}-SOURCES}
COMMAND ${THRIFT1}
--gen "${gen_language}:${options}${include_prefix_text}"
-o ${output_path}
${thrift_include_directories}
"${file_path}/${file_name}.thrift"
DEPENDS
${THRIFT1}
"${file_path}/${file_name}.thrift"
COMMENT "Generating ${file_name} files. Output: ${output_path}"
)
add_custom_target(
${file_name}-${language}-target ALL
DEPENDS ${${language}-${language}-HEADERS}
${${file_name}-${language}-SOURCES}
)
install(
DIRECTORY gen-${language}
DESTINATION include/${include_prefix}
FILES_MATCHING PATTERN "*.h")
install(
DIRECTORY gen-${language}
DESTINATION include/${include_prefix}
FILES_MATCHING PATTERN "*.tcc")
endmacro()