48 lines
1.7 KiB
Ruby
48 lines
1.7 KiB
Ruby
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# typed: strict
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# frozen_string_literal: true
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module OS
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module Linux
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# Helper functions for querying libstdc++ information.
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module Libstdcxx
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SONAME = "libstdc++.so.6"
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SYSTEM_LIBDIRS = %w[/lib64 /lib /usr/lib64 /usr/lib].freeze
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private_constant :SYSTEM_LIBDIRS
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sig { returns(Version) }
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def self.system_version
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@system_version ||= T.let(nil, T.nilable(Version))
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@system_version ||= if (path = system_path) &&
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(version = File.realpath(path)[%r{/libstdc\+\+\.so\.(\d+(?:\.\d+)*)$}, 1])
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Version.new(version)
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else
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Version::NULL
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end
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end
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sig { returns(T::Boolean) }
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def self.below_ci_version?
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system_version < LINUX_LIBSTDCXX_CI_VERSION
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end
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sig { returns(T.nilable(String)) }
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private_class_method def self.system_path
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if (ldconfig = which("ldconfig"))
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path = Utils.popen_read(ldconfig, "-p")[%r{=> (/.*/#{Regexp.escape(SONAME)})$}o, 1]
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return path if path.present? && File.file?(path) && Pathname(path).dylib?
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end
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if (gcc = ::DevelopmentTools.host_gcc_path).executable?
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path = Utils.popen_read(gcc, "--print-file-name=#{SONAME}").strip
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return path if path.start_with?("/") && File.file?(path) && Pathname(path).dylib?
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end
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libdirs = SYSTEM_LIBDIRS.filter_map { |path| File.realpath(path) if File.directory?(path) }
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libdirs.uniq!
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Find.find(*libdirs).find do |path|
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path = Pathname(path)
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path.basename.to_s == SONAME && path.file? && path.dylib? && path.arch_compatible?(::Hardware::CPU.arch)
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end
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end
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end
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end
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end
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