ruby--ruby/spec/rubyspec/optional/capi/spec_helper.rb

require File.expand_path('../../../spec_helper', __FILE__)

require 'rbconfig'

OBJDIR ||= File.expand_path("../../../ext/#{RUBY_NAME}/#{RUBY_VERSION}", __FILE__)
mkdir_p(OBJDIR)

def extension_path
  File.expand_path("../ext", __FILE__)
end

def object_path
  OBJDIR
end

def compile_extension(name)
  debug = false
  run_mkmf_in_process = false

  if RUBY_NAME == 'truffleruby'
    run_mkmf_in_process = true
  end

  ext = "#{name}_spec"
  source = "#{extension_path}/#{ext}.c"
  lib = "#{object_path}/#{ext}.#{RbConfig::CONFIG['DLEXT']}"
  ruby_header = "#{RbConfig::CONFIG['rubyhdrdir']}/ruby.h"

  return lib if File.exist?(lib) and
                File.mtime(lib) > File.mtime(source) and
                File.mtime(lib) > File.mtime(ruby_header) and
                File.mtime(lib) > File.mtime("#{extension_path}/rubyspec.h") and
                true            # sentinel

  # Copy needed source files to tmpdir
  tmpdir = tmp("cext_#{name}")
  Dir.mkdir(tmpdir)
  begin
    ["jruby.h", "rubinius.h", "truffleruby.h", "rubyspec.h", "#{ext}.c"].each do |file|
      cp "#{extension_path}/#{file}", "#{tmpdir}/#{file}"
    end

    Dir.chdir(tmpdir) do
      if run_mkmf_in_process
        required = require 'mkmf'
        # Reinitialize mkmf if already required
        init_mkmf unless required
        create_makefile(ext, tmpdir)
      else
        File.write("extconf.rb", "require 'mkmf'\n" +
          "create_makefile(#{ext.inspect})\n")
        output = ruby_exe("extconf.rb")
        raise "extconf failed:\n#{output}" unless $?.success?
        $stderr.puts output if debug
      end

      output = `make V=1 TARGET_SO_DIR=./`
      raise "make failed:\n#{output}" unless $?.success?
      $stderr.puts output if debug

      Dir.glob("*.#{RbConfig::CONFIG['DLEXT']}") do |file|
        cp file, "#{object_path}/#{file}"
      end
    end
  ensure
    rm_r tmpdir
  end

  File.chmod(0755, lib)
  lib
end

def load_extension(name)
  require compile_extension(name)
rescue LoadError
  if %r{/usr/sbin/execerror ruby "\(ld 3 1 main ([/a-zA-Z0-9_\-.]+_spec\.so)"} =~ $!.message
    system('/usr/sbin/execerror', "#{RbConfig::CONFIG["bindir"]}/ruby", "(ld 3 1 main #{$1}")
  end
  raise
end

# Constants
CAPI_SIZEOF_LONG = [0].pack('l!').size