build_config.rb

CIRCUITRUBY_ROOT = File.expand_path "../..", __FILE__
ATMEL_START_DIR = File.join(CIRCUITRUBY_ROOT, "atmel-start-cpx")
MRuby::Build.new('host', "#{CIRCUITRUBY_ROOT}/build") do |conf|
  toolchain :gcc

  conf.bins =%w(mrbc)
end

MRuby::CrossBuild.new("arm-none-eabi-cpx", "#{CIRCUITRUBY_ROOT}/build") do |conf|
  toolchain :gcc

  conf.cc do |cc|
    cc.command = "arm-none-eabi-gcc"
    # Start with mruby parameters for low-memory environments.
    # From upstream examples/targets/build_config_ArduinoDue.rb
    cc.defines = %w(
      MRB_HEAP_PAGE_SIZE=64
      KHASH_DEFAULT_SIZE=8
      MRB_STR_BUF_MIN_SIZE=20
    )
    cc.defines << %w(MRB_DISABLE_STDIO DISABLE_STDIO)

    # Controller framework required definitions
    cc.defines << %w(
      __SAMD21G18A__
    )

    # CFLAGS from atmel start makefile.
    cc.flags << %w(
      -mthumb -Os -ffunction-sections -mlong-calls -g3 -Wall -c -std=gnu99
    )

    # Controller include paths.
    cc.include_paths << %w(
      config
      hal/include
      hal/utils/include
      hpl/core
      hpl/dmac
      hpl/gclk
      hpl/pm
      hpk/port
      hpl/sysctrl
      hri
      CMSIS/Include
      samd21a/include
    ).map{|inc| File.join(ATMEL_START_DIR, inc) }
  end

  conf.bins = []
end