48 lines
1.4 KiB
Ruby
48 lines
1.4 KiB
Ruby
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# typed: strict
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# frozen_string_literal: true
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require "os/linux/ld"
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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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SOVERSION = 6
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SONAME = T.let("libstdc++.so.#{SOVERSION}".freeze, String)
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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(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.new("#{SOVERSION}#{path.realpath.basename.to_s.delete_prefix!(SONAME)}")
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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.nilable(Pathname)) }
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def self.system_path
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@system_path ||= T.let(nil, T.nilable(Pathname))
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@system_path ||= find_library(OS::Linux::Ld.library_paths(brewed: false))
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@system_path ||= find_library(OS::Linux::Ld.system_dirs(brewed: false))
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end
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sig { params(paths: T::Array[String]).returns(T.nilable(Pathname)) }
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private_class_method def self.find_library(paths)
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paths.each do |path|
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next if path.start_with?(HOMEBREW_PREFIX)
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candidate = Pathname(path)/SONAME
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return candidate if candidate.exist? && candidate.elf?
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end
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nil
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end
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end
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end
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end
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