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instance method

MakeMakefile#with_config

with_config(config, default=nil) { |config, default| ... }

# File tmp/rubies/ruby-3.2.0/lib/mkmf.rb, line 1676
def with_config(config, default=nil)
  config = config.sub(/^--with[-_]/, '')
  val = arg_config("--with-"+config) do
    if arg_config("--without-"+config)
      false
    elsif block_given?
      yield(config, default)
    else
      break default
    end
  end
  case val
  when "yes"
    true
  when "no"
    false
  else
    val
  end
end

Tests for the presence of a --with-config or --without-config option. Returns true if the with option is given, false if the without option is given, and the default value otherwise.

This can be useful for adding custom definitions, such as debug information.

Example:

Example

if with_config("debug")
   $defs.push("-DOSSL_DEBUG") unless $defs.include? "-DOSSL_DEBUG"
end

See also #try_type #try_const also in 4.1 · 4.0 · 3.4 · 3.3 · 3.1 · 3.0

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