104 lines
		
	
	
		
			2.9 KiB
		
	
	
	
		
			Ruby
		
	
	
	
	
	
			
		
		
	
	
			104 lines
		
	
	
		
			2.9 KiB
		
	
	
	
		
			Ruby
		
	
	
	
	
	
| # typed: true
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| # frozen_string_literal: true
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| 
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| require "os/linux/glibc"
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| 
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| class DependencyCollector
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|   extend T::Sig
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| 
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|   undef gcc_dep_if_needed
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|   undef glibc_dep_if_needed
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|   undef init_global_dep_tree_if_needed!
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| 
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|   sig { params(related_formula_names: T::Set[String]).returns(T.nilable(Dependency)) }
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|   def gcc_dep_if_needed(related_formula_names)
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|     # gcc is required for libgcc_s.so.1 if glibc or gcc are too old
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|     return unless DevelopmentTools.needs_build_formulae?
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|     return if building_global_dep_tree?
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|     return if related_formula_names.include?(GCC)
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|     return if global_dep_tree[GCC]&.intersect?(related_formula_names)
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|     return unless formula_for(GCC)
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| 
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|     Dependency.new(GCC)
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|   end
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| 
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|   sig { params(related_formula_names: T::Set[String]).returns(T.nilable(Dependency)) }
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|   def glibc_dep_if_needed(related_formula_names)
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|     return unless DevelopmentTools.needs_libc_formula?
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|     return if building_global_dep_tree?
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|     return if related_formula_names.include?(GLIBC)
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|     return if global_dep_tree[GLIBC]&.intersect?(related_formula_names)
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|     return unless formula_for(GLIBC)
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| 
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|     Dependency.new(GLIBC)
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|   end
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| 
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|   private
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| 
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|   GLIBC = "glibc"
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|   GCC = OS::LINUX_PREFERRED_GCC_RUNTIME_FORMULA
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| 
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|   sig { void }
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|   def init_global_dep_tree_if_needed!
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|     return unless DevelopmentTools.needs_build_formulae?
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|     return if building_global_dep_tree?
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|     return unless global_dep_tree.empty?
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| 
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|     building_global_dep_tree!
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|     global_dep_tree[GLIBC] = Set.new(global_deps_for(GLIBC))
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|     # gcc depends on glibc
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|     global_dep_tree[GCC] = Set.new([*global_deps_for(GCC), GLIBC, *@@global_dep_tree[GLIBC]])
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|     built_global_dep_tree!
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|   end
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| 
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|   sig { params(name: String).returns(T.nilable(Formula)) }
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|   def formula_for(name)
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|     @formula_for ||= {}
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|     @formula_for[name] ||= Formula[name]
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|   rescue FormulaUnavailableError
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|     nil
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|   end
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| 
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|   sig { params(name: String).returns(T::Array[String]) }
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|   def global_deps_for(name)
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|     @global_deps_for ||= {}
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|     # Always strip out glibc and gcc from all parts of dependency tree when
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|     # we're calculating their dependency trees. Other parts of Homebrew will
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|     # catch any circular dependencies.
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|     @global_deps_for[name] ||= if (formula = formula_for(name))
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|       formula.deps.map(&:name).flat_map do |dep|
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|         [dep, *global_deps_for(dep)].compact
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|       end.uniq
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|     else
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|       []
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|     end
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|   end
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| 
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|   # Use class variables to avoid this expensive logic needing to be done more
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|   # than once.
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|   # rubocop:disable Style/ClassVars
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|   @@global_dep_tree = {}
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|   @@building_global_dep_tree = false
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| 
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|   sig { returns(T::Hash[String, T::Set[String]]) }
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|   def global_dep_tree
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|     @@global_dep_tree
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|   end
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| 
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|   sig { void }
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|   def building_global_dep_tree!
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|     @@building_global_dep_tree = true
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|   end
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| 
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|   sig { void }
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|   def built_global_dep_tree!
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|     @@building_global_dep_tree = false
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|   end
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| 
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|   sig { returns(T::Boolean) }
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|   def building_global_dep_tree?
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|     @@building_global_dep_tree.present?
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|   end
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|   # rubocop:enable Style/ClassVars
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| end
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