86 lines
2.4 KiB
Ruby
86 lines
2.4 KiB
Ruby
# typed: true
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# frozen_string_literal: true
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require "compilers"
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# Combination of C++ standard library and compiler.
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class CxxStdlib
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extend T::Sig
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include CompilerConstants
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# Error for when a formula's dependency was built with a different C++ standard library.
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class CompatibilityError < StandardError
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def initialize(formula, dep, stdlib)
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super <<~EOS
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#{formula.full_name} dependency #{dep.name} was built with a different C++ standard
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library (#{stdlib.type_string} from #{stdlib.compiler}). This may cause problems at runtime.
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EOS
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end
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end
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def self.create(type, compiler)
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raise ArgumentError, "Invalid C++ stdlib type: #{type}" if type && [:libstdcxx, :libcxx].exclude?(type)
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apple_compiler = compiler.to_s.match?(GNU_GCC_REGEXP) ? false : true
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CxxStdlib.new(type, compiler, apple_compiler)
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end
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def self.check_compatibility(formula, deps, keg, compiler)
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return if formula.skip_cxxstdlib_check?
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stdlib = create(keg.detect_cxx_stdlibs.first, compiler)
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begin
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stdlib.check_dependencies(formula, deps)
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rescue CompatibilityError => e
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opoo e.message
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end
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end
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attr_reader :type, :compiler
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def initialize(type, compiler, apple_compiler)
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@type = type
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@compiler = compiler.to_sym
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@apple_compiler = apple_compiler
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end
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# If either package doesn't use C++, all is well.
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# libstdc++ and libc++ aren't ever intercompatible.
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# libstdc++ is compatible across Apple compilers, but
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# not between Apple and GNU compilers, nor between GNU compiler versions.
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def compatible_with?(other)
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return true if type.nil? || other.type.nil?
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return false unless type == other.type
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apple_compiler? && other.apple_compiler? ||
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!other.apple_compiler? && compiler.to_s[4..6] == other.compiler.to_s[4..6]
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end
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def check_dependencies(formula, deps)
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deps.each do |dep|
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# Software is unlikely to link against libraries from build-time deps, so
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# it doesn't matter if they link against different C++ stdlibs.
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next if dep.build?
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dep_stdlib = Tab.for_formula(dep.to_formula).cxxstdlib
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raise CompatibilityError.new(formula, dep, dep_stdlib) unless compatible_with? dep_stdlib
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end
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end
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def type_string
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type.to_s.gsub(/cxx$/, "c++")
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end
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sig { returns(String) }
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def inspect
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"#<#{self.class.name}: #{compiler} #{type}>"
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end
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def apple_compiler?
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@apple_compiler
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end
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end
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