toggle debugging

MRuby::Toolchain.new(:visualcpp) do |conf, _params|

conf.cc do |cc|
  cc.command = ENV['CC'] || 'cl.exe'
  # C4013: implicit function declaration
  cc.flags = [ENV['CFLAGS'] || %w(/c /nologo /W3 /we4013 /Zi /MD /O2 /D_CRT_SECURE_NO_WARNINGS)]
  cc.defines = %w(DISABLE_GEMS MRB_STACK_EXTEND_DOUBLING)
  cc.option_include_path = '/I%s'
  cc.option_define = '/D%s'
  cc.compile_options = "%{flags} /Fo%{outfile} %{infile}"
end

conf.cxx do |cxx|
  cxx.command = ENV['CXX'] || 'cl.exe'
  cxx.flags = [ENV['CXXFLAGS'] || ENV['CFLAGS'] || %w(/c /nologo /W3 /Zi /MD /O2 /EHs /D_CRT_SECURE_NO_WARNINGS)]
  cxx.defines = %w(DISABLE_GEMS MRB_STACK_EXTEND_DOUBLING)
  cxx.option_include_path = '/I%s'
  cxx.option_define = '/D%s'
  cxx.compile_options = "%{flags} /Fo%{outfile} %{infile}"
end

conf.linker do |linker|
  linker.command = ENV['LD'] || 'link.exe'
  linker.flags = [ENV['LDFLAGS'] || %w(/NOLOGO /DEBUG /INCREMENTAL:NO /OPT:ICF /OPT:REF)]
  linker.libraries = %w()
  linker.library_paths = %w()
  linker.option_library = '%s.lib'
  linker.option_library_path = '/LIBPATH:%s'
  linker.link_options = "%{flags} /OUT:%{outfile} %{objs} %{flags_before_libraries} %{libs} %{flags_after_libraries}"
end

conf.archiver do |archiver|
  archiver.command = ENV['AR'] || 'lib.exe'
  archiver.archive_options = '/nologo /OUT:%{outfile} %{objs}'
end

conf.yacc do |yacc|
  yacc.command = ENV['YACC'] || 'bison.exe'
  yacc.compile_options = '-o %{outfile} %{infile}'
end

conf.gperf do |gperf|
  gperf.command = 'gperf.exe'
  gperf.compile_options = '-L ANSI-C -C -p -j1 -i 1 -g -o -t -N mrb_reserved_word -k"1,3,$" %{infile} > %{outfile}'
end

conf.exts do |exts|
  exts.object = '.obj'
  exts.executable = '.exe'
  exts.library = '.lib'
end

conf.file_separator = '\'

if require 'open3'
  Open3.popen3 conf.cc.command do |_, _, e, _|
    if /Version (\d{2})\.\d{2}\.\d{5}/ =~ e.gets && $1.to_i <= 17
      m = "# VS2010/2012 support will be dropped after the next release! #"
      h = "#" * m.length
      puts h, m, h
    end
  end
end

end