custom_config.rb

MRuby::Build.new do |conf|
  # load specific toolchain settings

  # Gets set by the VS command prompts.
  if ENV['VisualStudioVersion'] || ENV['VSINSTALLDIR']
    toolchain :visualcpp
  else
    toolchain :gcc
  end

  enable_debug
  enable_test
  # enable_bintest

  ENV['ASAN_OPTIONS'] = 'atexit=true:print_stats=true'

  # gembox 'full-core'

  # enable_sanitizer :address, :undefined, :leak
  [conf.cc, conf.cxx, conf.linker].each do |c|
    c.flags <<
      '-fsanitize=address,leak,undefined' <<
      # '-fsanitize=thread' <<
      '-Wall' << '-Wextra' << '-Wno-unused-parameter' << '-Wno-missing-field-initializers'
    # c.defines << 'MRB_GC_STRESS' if c.respond_to? :defines
  end

  conf.cxx.flags << '-std=c++11'
  conf.linker.flags << '-fuse-ld=gold'
  ENV['CC'] = conf.cc.command = 'gcc-7'
  ENV['CXX'] = conf.cxx.command = 'g++-7'
  ENV['LD'] = conf.linker.command = 'g++-7'
  ENV['LDFLAGS'] = linker.flags.flatten.join(' ')

  # gem "#{MRUBY_ROOT}/mruby-"
end