End of Life Ruby 3.0 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →

class method

MakeMakefile.[]=

[]=(name, mod)

# File tmp/rubies/ruby-3.0.5/lib/mkmf.rb, line 2790
def self.[]=(name, mod)
  @lang[name] = mod
end

No documentation available

See also .[] #cc_command #check_signedness also in 4.1 · 4.0 · 3.4 · 3.3 · 3.2 · 3.1