MakeMakefile#enable_config

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

# File tmp/rubies/ruby-3.3.0/lib/mkmf.rb, line 1705
def enable_config(config, default=nil)
  if arg_config("--enable-"+config)
    true
  elsif arg_config("--disable-"+config)
    false
  elsif block_given?
    yield(config, default)
  else
    return default
  end
end

Tests for the presence of an --enable-config or --disable-config option. Returns true if the enable option is given, false if the disable option is given, and the default value otherwise.

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

Example:

Example

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

See also #dummy_makefile #find_executable #dir_config #find_header also in 4.1 · 4.0 · 3.4 · 3.2 · 3.1 · 3.0

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