好的，我对此束手无策。有一些类似的问题，但都提到了 therubyracer 0.10，并且他们大多认为可以通过升级到 0.12 来解决问题。
我遇到了类似的问题，但是当我使用 0.12 时。
类似问题
我在使用“标准”（xcode？）gcc 以及自制软件中的 apple-gcc42 和 gcc 时遇到问题。我都试过了，--with-system-v8而且--without-system-v8，再一次，没有骰子。
这是一些日志：
从头开始……</h2>
$ cd ~/Documents/code/website
$ rvm gemset empty
$ ruby -v
ruby 1.9.3p448 (2013-06-27 revision 41675) [x86_64-darwin10.8.0]
$ grep rubyracer Gemfile
gem 'therubyracer', '~> 0.12.0'
$ brew list | grep v8
$ cat ~/.bundle/config
$ cat .bundle/config
BUNDLE_BIN: bin
$ $CXX
$ $CPP
$ $CC
$ which gcc
/usr/bin/gcc
$ which g++
/usr/bin/g++
$ g++ -v
Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-
gxx-include-dir=/usr/include/c++/4.2.1
Apple LLVM version 5.1 (clang-503.0.38) (based on LLVM 3.4svn)
Target: x86_64-apple-darwin13.0.0
Thread model: posix
$ cd ~/Documents/code/website
$ rvm gemset empty
$ ruby -v
ruby 1.9.3p448 (2013-06-27 revision 41675) [x86_64-darwin10.8.0]
$ grep rubyracer Gemfile
gem 'therubyracer', '~> 0.12.0'
$ brew list | grep v8
$ cat ~/.bundle/config
$ cat .bundle/config
BUNDLE_BIN: bin
$ $CXX
$ $CPP
$ $CC
$ which gcc
/usr/bin/gcc
$ which g++
/usr/bin/g++
$ g++ -v
Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-
gxx-include-dir=/usr/include/c++/4.2.1
Apple LLVM version 5.1 (clang-503.0.38) (based on LLVM 3.4svn)
Target: x86_64-apple-darwin13.0.0
Thread model: posix
尝试捆绑安装
Installing libv8 (3.16.14.3)
Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.
/Users/chris/.rvm/rubies/ruby-1.9.3-p448/bin/ruby extconf.rb
creating Makefile
Compiling v8 for x64
Using python 2.7.5
Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/usr/include/c++/4.2.1
Unable to find a compiler officially supported by v8.
It is recommended to use GCC v4.4 or higher
Using compiler: g++
Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/usr/include/c++/4.2.1
Unable to find a compiler officially supported by v8.
It is recommended to use GCC v4.4 or higher
../src/cached-powers.cc:136:18: error: unused variable 'kCachedPowersLength' [-Werror,-Wunused-const-variable]
static const int kCachedPowersLength = ARRAY_SIZE(kCachedPowers);
^
1 error generated.
make[1]: *** [/Users/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3/vendor/v8/out/x64.release/obj.target/preparser_lib/src/cached-powers.o] Error 1
make: *** [x64.release] Error 2
/Users/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3/ext/libv8/location.rb:36:in `block in verify_installation!': libv8 did not install properly, expected binary v8 archive '/Users/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3/vendor/v8/out/x64.release/obj.target/tools/gyp/libv8_base.a'to exist, but it was not found (Libv8::Location::Vendor::ArchiveNotFound)
from /Users/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3/ext/libv8/location.rb:35:in `each'
from /Users/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3/ext/libv8/location.rb:35:in `verify_installation!'
from /Users/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3/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
CXX(target) /Users/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3/vendor/v8/out/x64.release/obj.target/preparser_lib/src/allocation.o
CXX(target) /Users/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3/vendor/v8/out/x64.release/obj.target/preparser_lib/src/atomicops_internals_x86_gcc.o
CXX(target) /Users/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3/vendor/v8/out/x64.release/obj.target/preparser_lib/src/bignum.o
CXX(target) /Users/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3/vendor/v8/out/x64.release/obj.target/preparser_lib/src/bignum-dtoa.o
CXX(target) /Users/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3/vendor/v8/out/x64.release/obj.target/preparser_lib/src/cached-powers.o
Gem files will remain installed in /Users/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3 for inspection.
Results logged to /Users/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3/ext/libv8/gem_make.out
An error occurred while installing libv8 (3.16.14.3), and Bundler cannot continue.
艰难时期。
错误消息建议建议使用 gcc 4.4+。我们能做到这一点。
$ export CXX=/usr/local/Cellar/gcc48/4.8.2/bin/g++-4.8
$ export CPP=/usr/local/Cellar/gcc48/4.8.2/bin/cpp-4.8
$ export CC=/usr/local/Cellar/gcc48/4.8.2/bin/gcc-4.8
$ which $CXX
/usr/local/Cellar/gcc48/4.8.2/bin/g++-4.8
$ which $CPP
/usr/local/Cellar/gcc48/4.8.2/bin/cpp-4.8
$ which $CC
/usr/local/Cellar/gcc48/4.8.2/bin/gcc-4.8
$ bundle install
…
Installing libv8 (3.16.14.3)
Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.
/Users/chris/.rvm/rubies/ruby-1.9.3-p448/bin/ruby extconf.rb
creating Makefile
Compiling v8 for x64
Using python 2.7.5
Using compiler: /usr/local/Cellar/gcc48/4.8.2/bin/g++-4.8
g++-4.8: error: unrecognized command line option '-Wnewline-eof'
make[1]: *** [/Users/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3/vendor/v8/out/x64.release/obj.target/preparser_lib/src/allocation.o] Error 1
make: *** [x64.release] Error 2
/Users/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3/ext/libv8/location.rb:36:in `block in verify_installation!': libv8 did not install properly, expected binary v8 archive '/Users/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3/vendor/v8/out/x64.release/obj.target/tools/gyp/libv8_base.a'to exist, but it was not found (Libv8::Location::Vendor::ArchiveNotFound)
from /Users/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3/ext/libv8/location.rb:35:in `each'
from /Users/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3/ext/libv8/location.rb:35:in `verify_installation!'
from /Users/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3/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
CXX(target) /Users/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3/vendor/v8/out/x64.release/obj.target/preparser_lib/src/allocation.o
Gem files will remain installed in /Users/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3 for inspection.
Results logged to /Users/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3/ext/libv8/gem_make.out
An error occurred while installing libv8 (3.16.14.3), and Bundler cannot continue.
Make sure that `gem install libv8 -v '3.16.14.3'` succeeds before bundling.
更糟糕的时候！
好的。因此，要解决 therubyracer 0.10 的问题，有些人建议 brew 安装 v8，然后告诉 rubygems 使用系统 v8。让我们看看发生了什么！
$ brew install v8
==> Downloading https://github.com/v8/v8/archive/3.21.17.tar.gz
Already downloaded: /Library/Caches/Homebrew/v8-3.21.17.tar.gz
==> Checking out http://gyp.googlecode.com/svn/trunk
==> make native -j4 library=shared snapshot=on console=readline i18nsupport=off
/usr/local/Cellar/v8/3.21.17: 21 files, 27M, built in 3.4 minutes
$ cat ~/.bundle/config
---
BUNDLE_BUILD__LIBV8: --with-system-v8
$ bundle install
…
Installing therubyracer (0.12.1)
Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.
/Users/chris/.rvm/rubies/ruby-1.9.3-p448/bin/ruby extconf.rb
checking for main() in -lpthread... yes
checking for main() in -lobjc... yes
checking for v8.h... yes
creating Makefile
make
compiling accessor.cc
clang: warning: argument unused during compilation: '-rdynamic'
In file included from accessor.cc:1:
./rr.h:463:14: error: no type named 'AccessorGetter' in namespace 'v8'
inline v8::AccessorGetter accessorGetter() {return &AccessorGetter;}
~~~~^
./rr.h:464:14: error: no type named 'AccessorSetter' in namespace 'v8'
inline v8::AccessorSetter accessorSetter() {return RTEST(set) ? &AccessorSetter : 0;}
~~~~^
./rr.h:466:14: error: no type named 'NamedPropertyGetter' in namespace 'v8'
inline v8::NamedPropertyGetter namedPropertyGetter() {return &NamedPropertyGetter;}
~~~~^
./rr.h:467:14: error: no type named 'NamedPropertySetter' in namespace 'v8'
inline v8::NamedPropertySetter namedPropertySetter() {return RTEST(set) ? &NamedPropertySetter : 0;}
~~~~^
./rr.h:468:14: error: no type named 'NamedPropertyQuery' in namespace 'v8'
inline v8::NamedPropertyQuery namedPropertyQuery() {return RTEST(query) ? &NamedPropertyQuery : 0;}
~~~~^
./rr.h:469:14: error: no type named 'NamedPropertyDeleter' in namespace 'v8'
inline v8::NamedPropertyDeleter namedPropertyDeleter() {return RTEST(deleter) ? &NamedPropertyDeleter : 0;}
~~~~^
./rr.h:470:14: error: no type named 'NamedPropertyEnumerator' in namespace 'v8'
inline v8::NamedPropertyEnumerator namedPropertyEnumerator() {return RTEST(enumerator) ? &NamedPropertyEnumerator : 0;}
~~~~^
./rr.h:472:14: error: no type named 'IndexedPropertyGetter' in namespace 'v8'
inline v8::IndexedPropertyGetter indexedPropertyGetter() {return &IndexedPropertyGetter;}
~~~~^
./rr.h:473:14: error: no type named 'IndexedPropertySetter' in namespace 'v8'
inline v8::IndexedPropertySetter indexedPropertySetter() {return RTEST(set) ? &IndexedPropertySetter : 0;}
~~~~^
./rr.h:474:14: error: no type named 'IndexedPropertyQuery' in namespace 'v8'
inline v8::IndexedPropertyQuery indexedPropertyQuery() {return RTEST(query) ? &IndexedPropertyQuery : 0;}
~~~~^
./rr.h:475:14: error: no type named 'IndexedPropertyDeleter' in namespace 'v8'
inline v8::IndexedPropertyDeleter indexedPropertyDeleter() {return RTEST(deleter) ? &IndexedPropertyDeleter : 0;}
~~~~^
./rr.h:476:14: error: no type named 'IndexedPropertyEnumerator' in namespace 'v8'
inline v8::IndexedPropertyEnumerator indexedPropertyEnumerator() {return RTEST(enumerator) ? &IndexedPropertyEnumerator : 0;}
~~~~^
./rr.h:482:16: error: no type named 'AccessorInfo' in namespace 'v8'; did you mean 'Accessor'?
Info(const v8::AccessorInfo& info);
^~~~~~~~~~~~~~~~
Accessor
./rr.h:456:7: note: 'Accessor' declared here
class Accessor {
^
./rr.h:488:18: error: no type named 'AccessorInfo' in namespace 'v8'; did you mean 'Accessor'?
inline const v8::AccessorInfo* operator->() {return this->info;}
^~~~~~~~~~~~~~~~
Accessor
./rr.h:456:7: note: 'Accessor' declared here
class Accessor {
^
./rr.h:502:11: error: no type named 'AccessorInfo' in namespace 'v8'; did you mean 'Accessor'?
const v8::AccessorInfo* info;
^~~~~~~~~~~~~~~~
Accessor
./rr.h:456:7: note: 'Accessor' declared here
class Accessor {
^
./rr.h:506:85: error: no type named 'AccessorInfo' in namespace 'v8'; did you mean 'Accessor'?
static v8::Handle<v8::Value> AccessorGetter(v8::Local<v8::String> property, const v8::AccessorInfo& info);
^~~~~~~~~~~~~~~~
Accessor
./rr.h:456:7: note: 'Accessor' declared here
class Accessor {
^
./rr.h:507:96: error: no type named 'AccessorInfo' in namespace 'v8'; did you mean 'Accessor'?
static void AccessorSetter(v8::Local<v8::String> property, v8::Local<v8::Value> value, const v8::AccessorInfo& info);
^~~~~~~~~~~~~~~~
Accessor
./rr.h:456:7: note: 'Accessor' declared here
class Accessor {
^
./rr.h:509:90: error: no type named 'AccessorInfo' in namespace 'v8'; did you mean 'Accessor'?
static v8::Handle<v8::Value> NamedPropertyGetter(v8::Local<v8::String> property, const v8::AccessorInfo& info);
^~~~~~~~~~~~~~~~
Accessor
./rr.h:456:7: note: 'Accessor' declared here
class Accessor {
^
./rr.h:510:118: error: no type named 'AccessorInfo' in namespace 'v8'; did you mean 'Accessor'?
static v8::Handle<v8::Value> NamedPropertySetter(v8::Local<v8::String> property, v8::Local<v8::Value> value, const v8::AccessorInfo& info);
^~~~~~~~~~~~~~~~
Accessor
./rr.h:456:7: note: 'Accessor' declared here
class Accessor {
^
fatal error: too many errors emitted, stopping now [-ferror-limit=]
20 errors generated.
make: *** [accessor.o] Error 1
Gem files will remain installed in /Users/chris/.rvm/gems/ruby-1.9.3-p448/gems/therubyracer-0.12.1 for inspection.
Results logged to /Users/chris/.rvm/gems/ruby-1.9.3-p448/gems/therubyracer-0.12.1/ext/v8/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.
完全摸不着头脑，已经在这上面浪费了几个小时。如果您能发现问题所在并帮助我解决问题，那么您将永远是我的英雄。