method

find_header

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find_header(header, *paths) public

Instructs mkmf to search for the given header in any of the paths provided, and returns whether or not it was found in those paths.

If the header is found then the path it was found on is added to the list of included directories that are sent to the compiler (via the -I switch).

Show source

# File lib/mkmf.rb, line 1146
  def find_header(header, *paths)
    message = checking_message(header, paths)
    header = cpp_include(header)
    checking_for message do
      if try_header(header)
        true
      else
        found = false
        paths.each do |dir|
          opt = "-I#{dir}".quote
          if try_header(header, opt)
            $INCFLAGS << " " << opt
            found = true
            break
          end
        end
        found
      end
    end
  end

find_header

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