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@ganta(Hideki Igarashi)

OS X El Capitanでlibv8 / therubyracerのbundle installに失敗する問題の解決方法

Last updated at Posted at 2015-11-08

概要

El Capitanをクリーンインストールしてから改めて環境を構築する際に、
therubyracerのGemのインストールで失敗するようになってしまいました。

libv8とtherubyracerのビルド時にオプションを付ける解決方法がWeb上でよく見つかります。
しかし、今回はそれでは解決できず、逆にビルド時のオプションを付けていたことでハマったため
整理することにしました。

TL;DR

[2016.05.04追記]

結局のところ、libv8を最新版にアップデートすれば解決するのですが、新しいXcodeが出たばかりだとlibv8が対応していない場合があります。その場合は、Appleのnon-LLVMな古いGCCをインストールします。

$ brew tap homebrew/dupes
$ brew install apple-gcc42
$ cd /path/to/repos
$ bundle config --local build.libv8 --with-cxx=/usr/local/bin/g++-4.2

libv8を最新にする場合は、ビルドオプションに何も付けません。non-LLVMなGCCを利用する場合は、上記のようにビルドオプションでそのGCCを指定するようにします。それ以外は何も付けません。

発生した問題

エラーメッセージをググってきた人のために、試行錯誤した内容を残しておきます。

libv8がインストールできない

まず、libv8とtherubyracerが依存関係に入っているGemfileでbundle installを実行すると、
以下のエラーが出力されてlibv8がインストールできません。

Installing libv8 3.16.14.7 with native extensions

Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

    /Users/user/.rbenv/versions/2.2.3/bin/ruby -r ./siteconf20151103-82429-igbg9b.rb extconf.rb
creating Makefile
Compiling v8 for x64
Using python 2.7.10
Using compiler: /usr/bin/c++ (clang version 7.0.0)
In file included from ../src/conversions.cc:32:
In file included from ../src/conversions-inl.h:43:
../src/scanner.h:444:5: error: unused typedef '__StaticAssertTypedef__444' [-Werror,-Wunused-local-typedef]
    STATIC_ASSERT(kCharacterLookaheadBufferSize == 1);
    ^
../src/checks.h:283:30: note: expanded from macro 'STATIC_ASSERT'
#define STATIC_ASSERT(test)  STATIC_CHECK(test)
                             ^
../src/checks.h:251:5: note: expanded from macro 'STATIC_CHECK'
    SEMI_STATIC_JOIN(__StaticAssertTypedef__, __LINE__)
    ^
../src/checks.h:240:32: note: expanded from macro 'SEMI_STATIC_JOIN'
#define SEMI_STATIC_JOIN(a, b) SEMI_STATIC_JOIN_HELPER(a, b)
                               ^
../src/checks.h:241:39: note: expanded from macro 'SEMI_STATIC_JOIN_HELPER'
#define SEMI_STATIC_JOIN_HELPER(a, b) a##b
                                      ^
<scratch space>:63:1: note: expanded from here
__StaticAssertTypedef__444
^
1 error generated.
make[1]: *** [/path/to/repo/vendor/bundle/gems/libv8-3.16.14.7/vendor/v8/out/x64.release/obj.target/preparser_lib/src/conversions.o] Error 1
make: *** [x64.release] Error 2
/path/to/repo/vendor/bundle/gems/libv8-3.16.14.7/ext/libv8/location.rb:36:in `block in verify_installation!': libv8 did not install properly, expected binary v8 archive '/path/to/repo/vendor/bundle/gems/libv8-3.16.14.7/vendor/v8/out/x64.release/obj.target/tools/gyp/libv8_base.a'to exist, but it was not found (Libv8::Location::Vendor::ArchiveNotFound)
        from /path/to/repo/vendor/bundle/gems/libv8-3.16.14.7/ext/libv8/location.rb:35:in `each'
        from /path/to/repo/vendor/bundle/gems/libv8-3.16.14.7/ext/libv8/location.rb:35:in `verify_installation!'
        from /path/to/repo/vendor/bundle/gems/libv8-3.16.14.7/ext/libv8/location.rb:26:in `install!'
        from extconf.rb:7:in `<main>'
GYP_GENERATORS=make \
        build/gyp/gyp --generator-output="out" build/all.gyp \
                      -Ibuild/standalone.gypi --depth=. \
                      -Dv8_target_arch=x64 \
                      -S.x64  -Dv8_enable_backtrace=1 -Dv8_can_use_vfp2_instructions=true -Darm_fpu=vfpv2 -Dv8_can_use_vfp3_instructions=true -Darm_fpu=vfpv3 -Dwerror=''
  CXX(target) /path/to/repo/vendor/bundle/gems/libv8-3.16.14.7/vendor/v8/out/x64.release/obj.target/preparser_lib/src/allocation.o
  CXX(target) /path/to/repo/vendor/bundle/gems/libv8-3.16.14.7/vendor/v8/out/x64.release/obj.target/preparser_lib/src/atomicops_internals_x86_gcc.o
  CXX(target) /path/to/repo/vendor/bundle/gems/libv8-3.16.14.7/vendor/v8/out/x64.release/obj.target/preparser_lib/src/bignum.o
  CXX(target) /path/to/repo/vendor/bundle/gems/libv8-3.16.14.7/vendor/v8/out/x64.release/obj.target/preparser_lib/src/bignum-dtoa.o
  CXX(target) /path/to/repo/vendor/bundle/gems/libv8-3.16.14.7/vendor/v8/out/x64.release/obj.target/preparser_lib/src/cached-powers.o
  CXX(target) /path/to/repo/vendor/bundle/gems/libv8-3.16.14.7/vendor/v8/out/x64.release/obj.target/preparser_lib/src/conversions.o

extconf failed, exit code 1

Gem files will remain installed in /path/to/repo/vendor/bundle/gems/libv8-3.16.14.7 for inspection.
Results logged to /path/to/repo/vendor/bundle/extensions/x86_64-darwin-15/2.2.0/libv8-3.16.14.7/gem_make.out
An error occurred while installing libv8 (3.16.14.7), and Bundler cannot continue.
Make sure that `gem install libv8 -v '3.16.14.7'` succeeds before bundling.

libv8にビルドオプションを渡すとtherubyracerがインストールできない

libv8のビルド時に--with-system-v8を渡すように設定してから再びbundle installを実行すると、
今度は以下のエラーが出力されてtherubyracerのインストールが失敗します。

Installing therubyracer 0.12.1 with native extensions

Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

    /Users/user/.rbenv/versions/2.2.3/bin/ruby -r ./siteconf20151103-9900-lv59c9.rb extconf.rb
checking for main() in -lpthread... yes
checking for main() in -lobjc... yes
checking for v8.h... no
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers.  Check the mkmf.log file for more details.  You may
need configuration options.

Provided configuration options:
        --with-opt-dir
        --without-opt-dir
        --with-opt-include
        --without-opt-include=${opt-dir}/include
        --with-opt-lib
        --without-opt-lib=${opt-dir}/lib
        --with-make-prog
        --without-make-prog
        --srcdir=.
        --curdir
        --ruby=/Users/user/.rbenv/versions/2.2.3/bin/$(RUBY_BASE_NAME)
        --with-pthreadlib
        --without-pthreadlib
        --with-objclib
        --without-objclib
        --enable-debug
        --disable-debug
        --with-v8-dir
        --without-v8-dir
        --with-v8-include
        --without-v8-include=${v8-dir}/include
        --with-v8-lib
        --without-v8-lib=${v8-dir}/lib
/path/to/repo/vendor/bundle/gems/libv8-3.16.14.7/ext/libv8/location.rb:50:in `configure': You have chosen to use the version of V8 found on your system (Libv8::Location::System::NotFoundError)
and *not* the one that is bundle with the libv8 rubygem. However,
it could not be located. please make sure you have a version of
v8 that is compatible with 3.16.14.7 installed. You may
need to special --with-v8-dir options if it is in a non-standard
location

thanks,
The Mgmt

        from /path/to/repo/vendor/bundle/gems/libv8-3.16.14.7/lib/libv8.rb:7:in `configure_makefile'
        from extconf.rb:32:in `<main>'

extconf failed, exit code 1

Gem files will remain installed in /path/to/repo/vendor/bundle/gems/therubyracer-0.12.1 for inspection.
Results logged to /path/to/repo/vendor/bundle/extensions/x86_64-darwin-15/2.2.0/therubyracer-0.12.1/gem_make.out
An error occurred while installing therubyracer (0.12.1), and Bundler cannot continue.
Make sure that `gem install therubyracer -v '0.12.1'` succeeds before bundling.

therubyracerにビルドオプションを渡してもインストールできない

エラーメッセージにもあるように、今度はtherubyracerのビルド時に--with-v8-dirオプションを渡すように
設定してbundle installを実行すると、メッセージは変わりますがエラーでインストールできません。

Installing therubyracer 0.12.1 with native extensions

Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

    /Users/user/.rbenv/versions/2.2.3/bin/ruby -r ./siteconf20151103-39647-12royrw.rb extconf.rb --with-v8-dir
checking for main() in -lpthread... yes
checking for main() in -lobjc... yes
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers.  Check the mkmf.log file for more details.  You may
need configuration options.

Provided configuration options:
        --with-opt-dir
        --without-opt-dir
        --with-opt-include
        --without-opt-include=${opt-dir}/include
        --with-opt-lib
        --without-opt-lib=${opt-dir}/lib
        --with-make-prog
        --without-make-prog
        --srcdir=.
        --curdir
        --ruby=/Users/user/.rbenv/versions/2.2.3/bin/$(RUBY_BASE_NAME)
        --with-pthreadlib
        --without-pthreadlib
        --with-objclib
        --without-objclib
        --enable-debug
        --disable-debug
        --with-v8-dir
/Users/user/.rbenv/versions/2.2.3/lib/ruby/2.2.0/mkmf.rb:1702:in `dir_config': undefined method `split' for true:TrueClass (NoMethodError)
        from /path/to/repo/vendor/bundle/gems/libv8-3.16.14.7/ext/libv8/location.rb:49:in `configure'
        from /path/to/repo/vendor/bundle/gems/libv8-3.16.14.7/lib/libv8.rb:7:in `configure_makefile'
        from extconf.rb:32:in `<main>'

extconf failed, exit code 1

Gem files will remain installed in /path/to/repo/vendor/bundle/gems/therubyracer-0.12.1 for inspection.
Results logged to /path/to/repo/vendor/bundle/extensions/x86_64-darwin-15/2.2.0/therubyracer-0.12.1/gem_make.out
An error occurred while installing therubyracer (0.12.1), and Bundler cannot continue.
Make sure that `gem install therubyracer -v '0.12.1'` succeeds before bundling.

古いバージョンのv8をインストールしても実行時にエラーになる

Homebrewのversionsを使って古いバージョンのv8をインストールしてみます。

$ brew tap homebrew/versions
$ brew install v8-315
$ brew link --force v8-315

libv8ビルド時のオプションに--with-system-v8を設定するようにします。

$ bundle config build.libv8 --with-system-v8

これでbundle installは通るようになります。
しかし、rakeなどの実行時に以下のエラーが発生します。

dyld: lazy symbol binding failed: Symbol not found: __ZN2v82V821AddGCPrologueCallbackEPFvNS_6GCTypeENS_15GCCallbackFlagsEES1_
  Referenced from: /path/to/repos/vendor/bundle/extensions/x86_64-darwin-15/2.2.0/therubyracer-0.12.1/v8/init.bundle
  Expected in: flat namespace

dyld: Symbol not found: __ZN2v82V821AddGCPrologueCallbackEPFvNS_6GCTypeENS_15GCCallbackFlagsEES1_
  Referenced from: /path/to/repos/vendor/bundle/extensions/x86_64-darwin-15/2.2.0/therubyracer-0.12.1/v8/init.bundle
  Expected in: flat namespace

therubyracerにビルドオプションを渡すとbundle installでエラーになってしまいます。

Installing therubyracer 0.12.1 with native extensions

Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

    /Users/user/.rbenv/versions/2.2.3/bin/ruby -r ./siteconf20151106-82187-1msxt33.rb extconf.rb --with-v8-dir
checking for main() in -lpthread... yes
checking for main() in -lobjc... yes
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers.  Check the mkmf.log file for more details.  You may
need configuration options.

Provided configuration options:
        --with-opt-dir
        --without-opt-dir
        --with-opt-include
        --without-opt-include=${opt-dir}/include
        --with-opt-lib
        --without-opt-lib=${opt-dir}/lib
        --with-make-prog
        --without-make-prog
        --srcdir=.
        --curdir
        --ruby=/Users/user/.rbenv/versions/2.2.3/bin/$(RUBY_BASE_NAME)
        --with-pthreadlib
        --without-pthreadlib
        --with-objclib
        --without-objclib
        --enable-debug
        --disable-debug
        --with-v8-dir
/Users/user/.rbenv/versions/2.2.3/lib/ruby/2.2.0/mkmf.rb:1702:in `dir_config': undefined method `split' for true:TrueClass (NoMethodError)
        from /path/to/repos/vendor/bundle/gems/libv8-3.16.14.7/ext/libv8/location.rb:49:in `configure'
        from /path/to/repos/vendor/bundle/gems/libv8-3.16.14.7/lib/libv8.rb:7:in `configure_makefile'
        from extconf.rb:32:in `<main>'

extconf failed, exit code 1

Gem files will remain installed in /path/to/repos/vendor/bundle/gems/therubyracer-0.12.1 for inspection.
Results logged to /path/to/repos/vendor/bundle/extensions/x86_64-darwin-15/2.2.0/therubyracer-0.12.1/gem_make.out
An error occurred while installing therubyracer (0.12.1), and Bundler cannot continue.
Make sure that `gem install therubyracer -v '0.12.1'` succeeds before bundling.

参考: Fails Install OS X El Capitan - 10.11 Beta (15A215h) · Issue #359 · cowboyd/therubyracer

解決方法

libv8をアップデートする (推奨)

いろいろ試行錯誤しましたが、結局はapple-gcc42を入れる必要も、
ビルドオプションに何か設定する必要もありません。

libv8を最新版にアップデートすれば解決します。

$ bundle update libv8

まだエラーが発生するという場合は、libv8とtherubyracerに対するビルドオプションが
~/.bundle/configに残っていないか確認しましょう。

それでもエラーが発生する場合は、お使いのXcodeのバージョンに対応したlibv8がまだリリースされていないと思われます。
その場合は次のnon-LLVMな古いGCCをインストールする方法を取ります。

XCode 4.2時代のnon-LLVMな古いGCCをインストールする (非推奨)

HomebrewのdupesからAppleのnon-LLVMな古いGCCをインストールします。

$ brew tap homebrew/dupes
$ brew install apple-gcc42

bundle installを実行するときにこのGCCを使うようにします。
環境変数CXXにg++コマンドのパスを設定することでも可能ですが、
Gemfileのあるリポジトリにbundle config --localでlibv8のビルドオプションに設定するのがよいでしょう。

$ cd /path/to/repos
$ bundle config --local build.libv8 --with-cxx=/usr/local/bin/g++-4.2

このとき、libv8にもtherubyracerにも他のビルドオプションを渡す必要はありません。

ただ、わざわざDeprecatedなGCCを入れてオプションを設定しなければならないので、この方法は非推奨です。

参考: Snip2Code - Fix libv8 in El Capitan

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