Top Level Namespace

Defined Under Namespace

Modules: Nokogiri, XSD

Constant Summary collapse

PACKAGE_ROOT_DIR =

helpful constants

File.expand_path(File.join(File.dirname(__FILE__), '..', '..'))
REQUIRED_LIBXML_VERSION =
"2.6.21"
"2.9.3"
REQUIRED_MINI_PORTILE_VERSION =

The gem version constraint in the Rakefile is not respected at install time. Keep this version in sync with the one in the Rakefile !

"~> 2.5.0"
REQUIRED_PKG_CONFIG_VERSION =
"~> 1.1"
OTHER_LIBRARY_VERSIONS =

Keep track of what versions of what libraries we build against

{}
NOKOGIRI_HELP_MESSAGE =
<<~HELP
  USAGE: ruby #{$0} [options]

    Flags that are always valid:

      --use-system-libraries
      --enable-system-libraries
          Use system libraries instead of building and using the packaged libraries.

      --disable-system-libraries
          Use the packaged libraries, and ignore the system libraries. This is the default on most
          platforms, and overrides `--use-system-libraries` and the environment variable
          `NOKOGIRI_USE_SYSTEM_LIBRARIES`.

      --disable-clean
          Do not clean out intermediate files after successful build.

      --prevent-strip
          Take steps to prevent stripping the symbol table and debugging info from the shared
          library, potentially overriding RbConfig's CFLAGS/LDFLAGS/DLDFLAGS.


    Flags only used when using system libraries:

      General:

        --with-opt-dir=DIRECTORY
            Look for headers and libraries in DIRECTORY.

        --with-opt-lib=DIRECTORY
            Look for libraries in DIRECTORY.

        --with-opt-include=DIRECTORY
            Look for headers in DIRECTORY.


      Related to zlib:

        --with-zlib-dir=DIRECTORY
            Look for zlib headers and library in DIRECTORY.

        --with-zlib-lib=DIRECTORY
            Look for zlib library in DIRECTORY.

        --with-zlib-include=DIRECTORY
            Look for zlib headers in DIRECTORY.


      Related to iconv:

        --with-iconv-dir=DIRECTORY
            Look for iconv headers and library in DIRECTORY.

        --with-iconv-lib=DIRECTORY
            Look for iconv library in DIRECTORY.

        --with-iconv-include=DIRECTORY
            Look for iconv headers in DIRECTORY.


      Related to libxml2:

        --with-xml2-dir=DIRECTORY
            Look for xml2 headers and library in DIRECTORY.

        --with-xml2-lib=DIRECTORY
            Look for xml2 library in DIRECTORY.

        --with-xml2-include=DIRECTORY
            Look for xml2 headers in DIRECTORY.


      Related to libxslt:

        --with-xslt-dir=DIRECTORY
            Look for xslt headers and library in DIRECTORY.

        --with-xslt-lib=DIRECTORY
            Look for xslt library in DIRECTORY.

        --with-xslt-include=DIRECTORY
            Look for xslt headers in DIRECTORY.


      Related to libexslt:

        --with-exslt-dir=DIRECTORY
            Look for exslt headers and library in DIRECTORY.

        --with-exslt-lib=DIRECTORY
            Look for exslt library in DIRECTORY.

        --with-exslt-include=DIRECTORY
            Look for exslt headers in DIRECTORY.


    Flags only used when building and using the packaged libraries:

      --disable-static
          Do not statically link packaged libraries, instead use shared libraries.

      --enable-cross-build
          Enable cross-build mode. (You probably do not want to set this manually.)


    Environment variables used:

      NOKOGIRI_USE_SYSTEM_LIBRARIES
          Equivalent to `--enable-system-libraries` when set, even if nil or blank.

      CC
          Use this path to invoke the compiler instead of `RbConfig::CONFIG['CC']`

      CPPFLAGS
          If this string is accepted by the C preprocessor, add it to the flags passed to the C preprocessor

      CFLAGS
          If this string is accepted by the compiler, add it to the flags passed to the compiler

      LDFLAGS
          If this string is accepted by the linker, add it to the flags passed to the linker

      LIBS
          Add this string to the flags passed to the linker
HELP
LOCAL_PACKAGE_RESPONSE =
Object.new

Instance Method Summary collapse

Instance Method Details

#abort_could_not_find_library(lib) ⇒ Object


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# File 'ext/nokogiri/extconf.rb', line 280

def abort_could_not_find_library(lib)
  abort("-----\n#{caller[0]}\n#{lib} is missing. Please locate mkmf.log to investigate how it is failing.\n-----")
end

#aix?Boolean

Returns:

  • (Boolean)

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# File 'ext/nokogiri/extconf.rb', line 187

def aix?
  RbConfig::CONFIG["target_os"] =~ /aix/
end

#chdir_for_buildObject


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# File 'ext/nokogiri/extconf.rb', line 284

def chdir_for_build
  # When using rake-compiler-dock on Windows, the underlying Virtualbox shared
  # folders don't support symlinks, but libiconv expects it for a build on
  # Linux. We work around this limitation by using the temp dir for cooking.
  build_dir = ENV['RCD_HOST_RUBY_PLATFORM'].to_s =~ /mingw|mswin|cygwin/ ? '/tmp' : '.'
  Dir.chdir(build_dir) do
    yield
  end
end

#concat_flags(*args) ⇒ Object


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# File 'ext/nokogiri/extconf.rb', line 199

def concat_flags(*args)
  args.compact.join(" ")
end

#config_clean?Boolean

utility functions

Returns:

  • (Boolean)

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# File 'ext/nokogiri/extconf.rb', line 152

def config_clean?
  enable_config('clean', true)
end

#config_cross_build?Boolean

Returns:

  • (Boolean)

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# File 'ext/nokogiri/extconf.rb', line 161

def config_cross_build?
  enable_config("cross-build")
end

#config_static?Boolean

Returns:

  • (Boolean)

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# File 'ext/nokogiri/extconf.rb', line 156

def config_static?
  default_static = !truffle?
  enable_config("static", default_static)
end

#config_system_libraries?Boolean

Returns:

  • (Boolean)

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# File 'ext/nokogiri/extconf.rb', line 165

def config_system_libraries?
  enable_config("system-libraries", ENV.key?("NOKOGIRI_USE_SYSTEM_LIBRARIES")) do |_, default|
    arg_config('--use-system-libraries', default)
  end
end

#copy_packaged_libraries_headers(to_path:, from_recipes:) ⇒ Object


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# File 'ext/nokogiri/extconf.rb', line 515

def copy_packaged_libraries_headers(to_path:, from_recipes:)
  FileUtils.rm_rf(to_path, secure: true)
  FileUtils.mkdir(to_path)
  from_recipes.each do |recipe|
    FileUtils.cp_r(Dir[File.join(recipe.path, 'include/*')], to_path)
  end
end

#darwin?Boolean

Returns:

  • (Boolean)

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# File 'ext/nokogiri/extconf.rb', line 179

def darwin?
  RbConfig::CONFIG['target_os'] =~ /darwin/
end

#do_cleanObject


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# File 'ext/nokogiri/extconf.rb', line 528

def do_clean
  root = Pathname(PACKAGE_ROOT_DIR)
  pwd  = Pathname(Dir.pwd)

  # Skip if this is a development work tree
  unless (root + '.git').exist?
    message("Cleaning files only used during build.\n")

    # (root + 'tmp') cannot be removed at this stage because
    # nokogiri.so is yet to be copied to lib.

    # clean the ports build directory
    Pathname.glob(pwd.join('tmp', '*', 'ports')) do |dir|
      FileUtils.rm_rf(dir, verbose: true)
    end

    if config_static?
      # ports installation can be safely removed if statically linked.
      FileUtils.rm_rf(root + 'ports', verbose: true)
    else
      FileUtils.rm_rf(root + 'ports' + 'archives', verbose: true)
    end
  end

  exit!(0)
end

#do_helpObject


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# File 'ext/nokogiri/extconf.rb', line 523

def do_help
  print(NOKOGIRI_HELP_MESSAGE)
  exit!(0)
end

#ensure_func(func, headers = nil) ⇒ Object


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# File 'ext/nokogiri/extconf.rb', line 269

def ensure_func(func, headers = nil)
  have_func(func, headers) || abort_could_not_find_library(func)
end

#ensure_package_configuration(opt: nil, pc: nil, lib:, func:, headers:) ⇒ Object


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# File 'ext/nokogiri/extconf.rb', line 264

def ensure_package_configuration(opt: nil, pc: nil, lib:, func:, headers:)
  have_package_configuration(opt: opt, pc: pc, lib: lib, func: func, headers: headers) ||
    abort_could_not_find_library(lib)
end

#have_libxml_headers?(version = nil) ⇒ Boolean

Returns:

  • (Boolean)

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# File 'ext/nokogiri/extconf.rb', line 323

def have_libxml_headers?(version = nil)
  source = if version.nil?
    <<~SRC
      #include <libxml/xmlversion.h>
    SRC
  else
    version_int = format("%d%2.2d%2.2d", *version.split("."))
    <<~SRC
      #include <libxml/xmlversion.h>
      #if LIBXML_VERSION < #{version_int}
      #  error libxml2 is older than #{version}
      #endif
    SRC
  end

  try_cpp(source)
end

#have_package_configuration(opt: nil, pc: nil, lib:, func:, headers:) ⇒ Object

set up mkmf to link against the library if we can find it


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# File 'ext/nokogiri/extconf.rb', line 247

def have_package_configuration(opt: nil, pc: nil, lib:, func:, headers:)
  if opt
    dir_config(opt)
    dir_config("opt")
  end

  # see if we have enough path info to do this without trying any harder
  unless ENV.key?("NOKOGIRI_TEST_PKG_CONFIG")
    return true if local_have_library(lib, func, headers)
  end

  try_package_configuration(pc) if pc

  # verify that we can compile and link against the library
  local_have_library(lib, func, headers)
end

#iconv_configure_flagsObject


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# File 'ext/nokogiri/extconf.rb', line 362

def iconv_configure_flags
  # give --with-iconv-dir and --with-opt-dir first priority
  ["iconv", "opt"].each do |target|
    config = preserving_globals { dir_config(target) }
    next unless config.any? && try_link_iconv("--with-#{target}-* flags") { dir_config(target) }
    idirs, ldirs = config.map do |dirs|
      Array(dirs).flat_map do |dir|
        dir.split(File::PATH_SEPARATOR)
      end if dirs
    end

    return [
      '--with-iconv=yes',
      *("CPPFLAGS=#{idirs.map { |dir| '-I' + dir }.join(' ')}" if idirs),
      *("LDFLAGS=#{ldirs.map { |dir| '-L' + dir }.join(' ')}" if ldirs),
    ]
  end

  if try_link_iconv
    return ['--with-iconv=yes']
  end

  config = preserving_globals { have_package_configuration('libiconv') }
  if config && try_link_iconv('pkg-config libiconv') { have_package_configuration('libiconv') }
    cflags, ldflags, libs = config

    return [
      '--with-iconv=yes',
      "CPPFLAGS=#{cflags}",
      "LDFLAGS=#{ldflags}",
      "LIBS=#{libs}",
    ]
  end

  abort_could_not_find_library("libiconv")
end

#libflag_to_filename(ldflag) ⇒ Object


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# File 'ext/nokogiri/extconf.rb', line 316

def libflag_to_filename(ldflag)
  case ldflag
  when /\A-l(.+)/
    "lib#{Regexp.last_match(1)}.#{$LIBEXT}"
  end
end

#local_have_library(lib, func = nil, headers = nil) ⇒ Object


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# File 'ext/nokogiri/extconf.rb', line 203

def local_have_library(lib, func = nil, headers = nil)
  have_library(lib, func, headers) || have_library("lib#{lib}", func, headers)
end

#nix?Boolean

Returns:

  • (Boolean)

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# File 'ext/nokogiri/extconf.rb', line 191

def nix?
  !(windows? || solaris? || darwin?)
end

#Nokogiri(*args, &block) ⇒ Object

Parse a document contained in args. Nokogiri will try to guess what type of document you are attempting to parse. For more information, see Nokogiri.parse

To specify the type of document, use Nokogiri.XML or Nokogiri.HTML.


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# File 'lib/nokogiri.rb', line 117

def Nokogiri(*args, &block)
  if block_given?
    Nokogiri::HTML::Builder.new(&block).doc.root
  else
    Nokogiri.parse(*args)
  end
end

#openbsd?Boolean

Returns:

  • (Boolean)

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# File 'ext/nokogiri/extconf.rb', line 183

def openbsd?
  RbConfig::CONFIG['target_os'] =~ /openbsd/
end

#preserving_globalsObject


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# File 'ext/nokogiri/extconf.rb', line 273

def preserving_globals
  values = [$arg_config, $INCFLAGS, $CFLAGS, $CPPFLAGS, $LDFLAGS, $DLDFLAGS, $LIBPATH, $libs].map(&:dup)
  yield
ensure
  $arg_config, $INCFLAGS, $CFLAGS, $CPPFLAGS, $LDFLAGS, $DLDFLAGS, $LIBPATH, $libs = values
end

#process_recipe(name, version, static_p, cross_p) ⇒ Object


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# File 'ext/nokogiri/extconf.rb', line 399

def process_recipe(name, version, static_p, cross_p)
  require 'rubygems'
  gem('mini_portile2', REQUIRED_MINI_PORTILE_VERSION)
  require 'mini_portile2'
  message("Using mini_portile version #{MiniPortile::VERSION}\n")

  if name != "libxml2" && name != "libxslt"
    OTHER_LIBRARY_VERSIONS[name] = version
  end

  MiniPortile.new(name, version).tap do |recipe|
    recipe.target = File.join(PACKAGE_ROOT_DIR, "ports")
    # Prefer host_alias over host in order to use i586-mingw32msvc as
    # correct compiler prefix for cross build, but use host if not set.
    recipe.host = RbConfig::CONFIG["host_alias"].empty? ? RbConfig::CONFIG["host"] : RbConfig::CONFIG["host_alias"]
    recipe.patch_files = Dir[File.join(PACKAGE_ROOT_DIR, "patches", name, "*.patch")].sort
    recipe.configure_options << "--libdir=#{File.join(recipe.path, 'lib')}"

    yield recipe

    env = Hash.new do |hash, key|
      hash[key] = (ENV[key]).to_s
    end

    recipe.configure_options.flatten!

    recipe.configure_options.delete_if do |option|
      case option
      when /\A(\w+)=(.*)\z/
        env[Regexp.last_match(1)] = if env.key?(Regexp.last_match(1))
          concat_flags(env[Regexp.last_match(1)], Regexp.last_match(2))
        else
          Regexp.last_match(2)
        end
        true
      else
        false
      end
    end

    if static_p
      recipe.configure_options += [
        "--disable-shared",
        "--enable-static",
      ]
      env["CFLAGS"] = concat_flags(env["CFLAGS"], "-fPIC")
    else
      recipe.configure_options += [
        "--enable-shared",
        "--disable-static",
      ]
    end

    if cross_p
      recipe.configure_options += [
        "--target=#{recipe.host}",
        "--host=#{recipe.host}",
      ]
    end

    if RbConfig::CONFIG['target_cpu'] == 'universal'
      %w[CFLAGS LDFLAGS].each do |key|
        unless env[key].include?('-arch')
          env[key] = concat_flags(env[key], RbConfig::CONFIG['ARCH_FLAG'])
        end
      end
    end

    recipe.configure_options += env.map do |key, value|
      "#{key}=#{value.strip}"
    end

    checkpoint = "#{recipe.target}/#{recipe.name}-#{recipe.version}-#{recipe.host}.installed"
    if File.exist?(checkpoint)
      message("Building Nokogiri with a packaged version of #{name}-#{version}.\n")
    else
      message(<<~EOM)
        ---------- IMPORTANT NOTICE ----------
        Building Nokogiri with a packaged version of #{name}-#{version}.
        Configuration options: #{recipe.configure_options.shelljoin}
      EOM

      unless recipe.patch_files.empty?
        message("The following patches are being applied:\n")

        recipe.patch_files.each do |patch|
          message("  - %s\n" % File.basename(patch))
        end
      end

      message(<<~EOM)

        The Nokogiri maintainers intend to provide timely security updates, but if
        this is a concern for you and want to use your OS/distro system library
        instead, then abort this installation process and install nokogiri as
        instructed at:

          https://nokogiri.org/tutorials/installing_nokogiri.html#installing-using-standard-system-libraries

      EOM

      message(<<~EOM) if name == 'libxml2'
        Note, however, that nokogiri cannot guarantee compatiblity with every
        version of libxml2 that may be provided by OS/package vendors.

      EOM

      chdir_for_build do
        recipe.cook
      end
      FileUtils.touch(checkpoint)
    end
    recipe.activate
  end
end

#sh_export_path(path) ⇒ Object


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# File 'ext/nokogiri/extconf.rb', line 294

def sh_export_path(path)
  # because libxslt 1.1.29 configure.in uses AC_PATH_TOOL which treats ":"
  # as a $PATH separator, we need to convert windows paths from
  #
  #   C:/path/to/foo
  #
  # to
  #
  #   /C/path/to/foo
  #
  # which is sh-compatible, in order to find things properly during
  # configuration
  return path unless windows?

  match = Regexp.new("^([A-Z]):(/.*)").match(path)
  if match && match.length == 3
    return File.join("/", match[1], match[2])
  end

  path
end

#solaris?Boolean

Returns:

  • (Boolean)

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# File 'ext/nokogiri/extconf.rb', line 175

def solaris?
  RbConfig::CONFIG['target_os'] =~ /solaris/
end

#truffle?Boolean

Returns:

  • (Boolean)

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# File 'ext/nokogiri/extconf.rb', line 195

def truffle?
  ::RUBY_ENGINE == 'truffleruby'
end

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# File 'ext/nokogiri/extconf.rb', line 341

def try_link_iconv(using = nil)
  checking_for(using ? "iconv using #{using}" : 'iconv') do
    ['', '-liconv'].any? do |opt|
      preserving_globals do
        yield if block_given?

        try_link(<<~'SRC', opt)
          #include <stdlib.h>
          #include <iconv.h>
          int main(void)
          {
              iconv_t cd = iconv_open("", "");
              iconv(cd, NULL, NULL, NULL, NULL);
              return EXIT_SUCCESS;
          }
        SRC
      end
    end
  end
end

#try_package_configuration(pc) ⇒ Object

wrapper around MakeMakefil#pkg_config and the PKGConfig gem


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# File 'ext/nokogiri/extconf.rb', line 213

def try_package_configuration(pc)
  unless ENV.key?("NOKOGIRI_TEST_PKG_CONFIG_GEM")
    # try MakeMakefile#pkg_config, which uses the system utility `pkg-config`.
    return if checking_for("#{pc} using `pkg_config`", LOCAL_PACKAGE_RESPONSE) do
      pkg_config(pc)
    end
  end

  # `pkg-config` probably isn't installed, which appears to be the case for lots of freebsd systems.
  # let's fall back to the pkg-config gem, which knows how to parse .pc files, and wrap it with the
  # same logic as MakeMakefile#pkg_config
  begin
    require 'rubygems'
    gem('pkg-config', REQUIRED_PKG_CONFIG_VERSION)
    require 'pkg-config'

    checking_for("#{pc} using pkg-config gem version #{PKGConfig::VERSION}", LOCAL_PACKAGE_RESPONSE) do
      if PKGConfig.have_package(pc)
        cflags  = PKGConfig.cflags(pc)
        ldflags = PKGConfig.libs_only_L(pc)
        libs    = PKGConfig.libs_only_l(pc)

        Logging.message("pkg-config gem found package configuration for %s\n", pc)
        Logging.message("cflags: %s\nldflags: %s\nlibs: %s\n\n", cflags, ldflags, libs)

        [cflags, ldflags, libs]
      end
    end
  rescue LoadError
    message("Please install either the `pkg-config` utility or the `pkg-config` rubygem.\n")
  end
end

#windows?Boolean

Returns:

  • (Boolean)

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# File 'ext/nokogiri/extconf.rb', line 171

def windows?
  RbConfig::CONFIG['target_os'] =~ /mingw32|mswin/
end