703d8a1aa3
This method may see values originating HOMEBREW_CC. This reverts commit 9c74f42962090c016143744b057e13aa75d9b13e.
134 lines
3.2 KiB
Ruby
134 lines
3.2 KiB
Ruby
module CompilerConstants
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GNU_GCC_VERSIONS = %w[4.3 4.4 4.5 4.6 4.7 4.8 4.9 5]
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GNU_GCC_REGEXP = /^gcc-(4\.[3-9]|5)$/
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end
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class CompilerFailure
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attr_reader :name
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attr_rw :version
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# Allows Apple compiler `fails_with` statements to keep using `build`
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# even though `build` and `version` are the same internally
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alias_method :build, :version
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# The cause is no longer used so we need not hold a reference to the string
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def cause(_); end
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def self.for_standard standard
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COLLECTIONS.fetch(standard) do
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raise ArgumentError, "\"#{standard}\" is not a recognized standard"
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end
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end
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def self.create(spec, &block)
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# Non-Apple compilers are in the format fails_with compiler => version
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if spec.is_a?(Hash)
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_, major_version = spec.each { |e| break e }
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name = "gcc-#{major_version}"
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# so fails_with :gcc => '4.8' simply marks all 4.8 releases incompatible
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version = "#{major_version}.999"
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else
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name = spec
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version = 9999
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end
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new(name, version, &block)
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end
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def initialize(name, version, &block)
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@name = name
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@version = version
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instance_eval(&block) if block_given?
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end
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def ===(compiler)
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name == compiler.name && version >= compiler.version
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end
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def inspect
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"#<#{self.class.name}: #{name} #{version}>"
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end
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COLLECTIONS = {
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:cxx11 => [
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create(:gcc_4_0),
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create(:gcc),
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create(:llvm),
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create(:clang) { build 425 },
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create(:gcc => "4.3"),
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create(:gcc => "4.4"),
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create(:gcc => "4.5"),
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create(:gcc => "4.6"),
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],
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:openmp => [
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create(:clang),
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create(:llvm),
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],
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}
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end
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class CompilerSelector
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include CompilerConstants
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Compiler = Struct.new(:name, :version)
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COMPILER_PRIORITY = {
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:clang => [:clang, :gcc, :llvm, :gnu, :gcc_4_0],
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:gcc => [:gcc, :llvm, :gnu, :clang, :gcc_4_0],
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:llvm => [:llvm, :gcc, :gnu, :clang, :gcc_4_0],
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:gcc_4_0 => [:gcc_4_0, :gcc, :llvm, :gnu, :clang],
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}
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def self.select_for(formula, compilers=self.compilers)
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new(formula, MacOS, compilers).compiler
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end
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def self.compilers
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COMPILER_PRIORITY.fetch(MacOS.default_compiler)
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end
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attr_reader :formula, :failures, :versions, :compilers
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def initialize(formula, versions, compilers)
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@formula = formula
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@failures = formula.compiler_failures
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@versions = versions
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@compilers = compilers
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end
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def compiler
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find_compiler { |c| return c.name unless fails_with?(c) }
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raise CompilerSelectionError.new(formula)
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end
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private
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def find_compiler
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compilers.each do |compiler|
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case compiler
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when :gnu
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GNU_GCC_VERSIONS.reverse_each do |v|
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name = "gcc-#{v}"
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version = compiler_version(name)
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yield Compiler.new(name, version) if version
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end
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else
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version = compiler_version(compiler)
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yield Compiler.new(compiler, version) if version
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end
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end
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end
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def fails_with?(compiler)
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failures.any? { |failure| failure === compiler }
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end
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def compiler_version(name)
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case name
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when GNU_GCC_REGEXP
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versions.non_apple_gcc_version(name)
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else
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versions.send("#{name}_build_version")
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end
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end
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end
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