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Fix cmake function PROTOBUF_GENERATE_CPP(): now it returns correct paths in SRCS and HDRS

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even if input ".proto" files are located in sibling directories.
This commit is contained in:
Vitaly Baranov 2024-02-18 12:46:21 +01:00
parent e428542b2e
commit 1ef5bca591
1 changed files with 41 additions and 10 deletions
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51
contrib/google-protobuf-cmake/protobuf_generate.cmake
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@ -157,15 +157,13 @@ function(protobuf_generate)
set(_generated_srcs_all)
foreach(_proto ${protobuf_generate_PROTOS})
get_filename_component(_abs_file ${_proto} ABSOLUTE)
get_filename_component(_abs_dir ${_abs_file} DIRECTORY)
get_filename_component(_basename ${_proto} NAME_WE)
file(RELATIVE_PATH _rel_dir ${CMAKE_CURRENT_SOURCE_DIR} ${_abs_dir})
set(_possible_rel_dir)
if (NOT protobuf_generate_APPEND_PATH)
set(_possible_rel_dir ${_rel_dir}/)
endif()
# The protobuf compiler doesn't return paths to the files it generates so we have to calculate those paths here:
# _abs_file - absolute path to a .proto file,
# _possible_rel_dir - relative path to the .proto file from some import directory specified in Protobuf_IMPORT_DIRS,
# _basename - filename of the .proto file (without path and without extenstion).
get_proto_absolute_path(_abs_file "${_proto}" ${_protobuf_include_path})
get_proto_relative_path(_possible_rel_dir "${_abs_file}" ${_protobuf_include_path})
get_filename_component(_basename "${_abs_file}" NAME_WE)
set(_generated_srcs)
foreach(_ext ${protobuf_generate_GENERATE_EXTENSIONS})
@ -173,7 +171,7 @@ function(protobuf_generate)
endforeach()
if(protobuf_generate_DESCRIPTORS AND protobuf_generate_LANGUAGE STREQUAL cpp)
set(_descriptor_file "${CMAKE_CURRENT_BINARY_DIR}/${_basename}.desc")
set(_descriptor_file "${protobuf_generate_PROTOC_OUT_DIR}/${_possible_rel_dir}${_basename}.desc")
set(_dll_desc_out "--descriptor_set_out=${_descriptor_file}")
list(APPEND _generated_srcs ${_descriptor_file})
endif()
@ -196,3 +194,36 @@ function(protobuf_generate)
target_sources(${protobuf_generate_TARGET} PRIVATE ${_generated_srcs_all})
endif()
endfunction()
# Calculates the absolute path to a .proto file.
function(get_proto_absolute_path result proto)
cmake_path(IS_ABSOLUTE proto _is_abs_path)
if(_is_abs_path)
set(${result} "${proto}" PARENT_SCOPE)
return()
endif()
foreach(_include_dir ${ARGN})
if(EXISTS "${_include_dir}/${proto}")
set(${result} "${_include_dir}/${proto}" PARENT_SCOPE)
return()
endif()
endforeach()
message(SEND_ERROR "Not found protobuf ${proto} in Protobuf_IMPORT_DIRS: ${ARGN}")
endfunction()
# Calculates a relative path to a .proto file. The returned path is relative to one of include directories.
function(get_proto_relative_path result abs_path)
set(${result} "" PARENT_SCOPE)
get_filename_component(_abs_dir "${abs_path}" DIRECTORY)
foreach(_include_dir ${ARGN})
cmake_path(IS_PREFIX _include_dir "${_abs_dir}" _is_prefix)
if(_is_prefix)
file(RELATIVE_PATH _rel_dir "${_include_dir}" "${_abs_dir}")
if(NOT _rel_dir STREQUAL "")
set(${result} "${_rel_dir}/" PARENT_SCOPE)
endif()
return()
endif()
endforeach()
message(WARNING "Not found protobuf ${abs_path} in Protobuf_IMPORT_DIRS: ${ARGN}")
endfunction()