MakeMakefile#modified?

modified?(target, times)

# File tmp/rubies/ruby-3.4.1/lib/mkmf.rb, line 285
def modified?(target, times)
  (t = File.mtime(target)) rescue return nil
  Array === times or times = [times]
  t if times.all? {|n| n <= t}
end

Returns time stamp of the target file if it exists and is newer than or equal to all of times.

See also #log_src #pkg_config #have_var #rm_f also in 4.1 · 4.0

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