Protocol Buffers - Google's data interchange format (grpc依赖)
https://developers.google.com/protocol-buffers/
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95 lines
3.4 KiB
95 lines
3.4 KiB
1 year ago
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require "ffi-compiler/compile_task"
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# # @param task [FFI::Compiler::CompileTask] task to configure
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def configure_common_compile_task(task)
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if FileUtils.pwd.include? 'ext'
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src_dir = '.'
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third_party_path = 'third_party/utf8_range'
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else
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src_dir = 'ext/google/protobuf_c'
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third_party_path = 'ext/google/protobuf_c/third_party/utf8_range'
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end
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task.add_include_path third_party_path
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task.add_define 'NDEBUG'
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task.cflags << "-std=gnu99 -O3"
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[
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:convert, :defs, :map, :message, :protobuf, :repeated_field, :wrap_memcpy
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].each { |file| task.exclude << "/#{file}.c" }
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task.ext_dir = src_dir
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task.source_dirs = [src_dir]
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if RbConfig::CONFIG['target_os'] =~ /darwin|linux/
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task.cflags << "-Wall -Wsign-compare -Wno-declaration-after-statement"
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end
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end
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# FFI::CompilerTask's constructor walks the filesystem at task definition time
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# to create subtasks for each source file, so files from third_party must be
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# copied into place before the task is defined for it to work correctly.
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# TODO(jatl) Is there a sane way to check for generated protos under lib too?
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def with_generated_files
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expected_path = FileUtils.pwd.include?('ext') ? 'third_party/utf8_range' : 'ext/google/protobuf_c/third_party/utf8_range'
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if File.directory?(expected_path)
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yield
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else
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task :default do
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# It is possible, especially in cases like the first invocation of
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# `rake test` following `rake clean` or a fresh checkout that the
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# `copy_third_party` task has been executed since initial task definition.
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# If so, run the task definition block now and invoke it explicitly.
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if File.directory?(expected_path)
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yield
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Rake::Task[:default].invoke
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else
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raise "Missing directory #{File.absolute_path(expected_path)}." +
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" Did you forget to run `rake copy_third_party` before building" +
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" native extensions?"
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end
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end
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end
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end
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desc "Compile Protobuf library for FFI"
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namespace "ffi-protobuf" do
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with_generated_files do
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# Compile Ruby UPB separately in order to limit use of -DUPB_BUILD_API to one
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# compilation unit.
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desc "Compile UPB library for FFI"
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namespace "ffi-upb" do
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with_generated_files do
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FFI::Compiler::CompileTask.new('ruby-upb') do |c|
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configure_common_compile_task c
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c.add_define "UPB_BUILD_API"
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c.exclude << "/glue.c"
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c.exclude << "/shared_message.c"
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c.exclude << "/shared_convert.c"
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if RbConfig::CONFIG['target_os'] =~ /darwin|linux/
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c.cflags << "-fvisibility=hidden"
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end
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end
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end
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end
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FFI::Compiler::CompileTask.new 'protobuf_c_ffi' do |c|
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configure_common_compile_task c
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# Ruby UPB was already compiled with different flags.
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c.exclude << "/range2-neon.c"
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c.exclude << "/range2-sse.c"
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c.exclude << "/naive.c"
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c.exclude << "/ruby-upb.c"
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end
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# Setup dependencies so that the .o files generated by building ffi-upb are
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# available to link here.
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# TODO(jatl) Can this be simplified? Can the single shared library be used
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# instead of the object files?
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protobuf_c_task = Rake::Task[:default]
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protobuf_c_shared_lib_task = Rake::Task[protobuf_c_task.prereqs.last]
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ruby_upb_shared_lib_task = Rake::Task[:"ffi-upb:default"].prereqs.first
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Rake::Task[ruby_upb_shared_lib_task].prereqs.each do |dependency|
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protobuf_c_shared_lib_task.prereqs.prepend dependency
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end
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end
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end
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