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# frozen_string_literal: false
require 'mkmf'

alias __have_macro__ have_macro

have_func("labs", "stdlib.h")
have_func("llabs", "stdlib.h")
have_func("finite", "math.h")
have_func("isfinite", "math.h")

have_type("struct RRational", "ruby.h")
have_func("rb_rational_num", "ruby.h")
have_func("rb_rational_den", "ruby.h")
have_func("rb_array_const_ptr", "ruby.h")
have_func("rb_sym2str", "ruby.h")

create_makefile('bigdecimal')

# Add additional dependencies
open('Makefile', 'a') do |io|
  if RUBY_VERSION >= '2.4'
    io.puts <<-MAKEFILE
bigdecimal.o: $(hdrdir)/ruby/backward.h
    MAKEFILE
  end
end