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require "compilers"
class CxxStdlib
include CompilerConstants
def self.create(type, compiler)
if type && ![:libstdcxx, :libcxx].include?(type)
raise ArgumentError, "Invalid C++ stdlib type: #{type}"
end
klass = GNU_GCC_REGEXP === compiler.to_s ? GnuStdlib : AppleStdlib
klass.new(type, compiler)
end
attr_reader :type, :compiler
def initialize(type, compiler)
@type = type
@compiler = compiler.to_sym
end
# If either package doesn't use C++, all is well
# libstdc++ and libc++ aren't ever intercompatible
# libstdc++ is compatible across Apple compilers, but
# not between Apple and GNU compilers, or between GNU compiler versions
def compatible_with?(other)
return true if type.nil? || other.type.nil?
return false unless type == other.type
if apple_compiler?
return false unless other.apple_compiler?
else
return false if other.apple_compiler?
return false unless compiler.to_s[4..6] == other.compiler.to_s[4..6]
end
true
end
def check_dependencies(formula, deps)
unless formula.skip_cxxstdlib_check?
deps.each do |dep|
# Software is unlikely to link against anything from its
# buildtime deps, so it doesn't matter at all if they link
# against different C++ stdlibs
next if dep.build?
dep_stdlib = Tab.for_formula(dep.to_formula).cxxstdlib
if !compatible_with? dep_stdlib
raise IncompatibleCxxStdlibs.new(formula, dep, dep_stdlib, self)
end
end
end
end
def type_string
type.to_s.gsub(/cxx$/, 'c++')
end
class AppleStdlib < CxxStdlib
def apple_compiler?
true
end
end
class GnuStdlib < CxxStdlib
def apple_compiler?
false
end
end
end
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