therubyracer - Gem :: Ext :: BuildError:错误:无法构建gem原生扩展

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

    /Users/jeeves.butler/.rvm/rubies/ruby-1.9.2-p290/bin/ruby 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
    --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/jeeves.butler/.rvm/rubies/ruby-1.9.2-p290/bin/ruby
    --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
/Users/jeeves.butler/.rvm/gems/ruby-1.9.2-p290/gems/libv8-3.16.14.3/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 bundled with the libv8 rubygem. However,
it could not be located. please make sure you have a version of
v8 that is compatible with 3.16.14.3 installed. You may
need to special --with-v8-dir options if it is in a non-standard
location

thanks,
The Mgmt

    from /Users/jeeves.butler/.rvm/gems/ruby-1.9.2-p290/gems/libv8-3.16.14.3/lib/libv8.rb:7:in `configure_makefile'
    from extconf.rb:32:in `'

extconf failed, exit code 1

Gem files will remain installed in /Users/jeeves.butler/.rvm/gems/ruby-1.9.2-p290/gems/therubyracer-0.12.1 for inspection.
Results logged to /Users/jeeves.butler/.rvm/gems/ruby-1.9.2-p290/extensions/x86_64-darwin-13/1.9.1/therubyracer-0.12.1/gem_make.out

从我可以收集的内容来看,我选择libv8使用我的本地V8库而不是提供的内容进行安装libv8,但现在无法找到本地安装.

如何检查我是否确实安装了V8,如何找到它？

我尝试了一些指定的标志,它们似乎都没有将gem指向正确的安装目录

这可能是一个单独的主题,但是什么是extconf.rb？我在几个地方见过它.它gcc在具体的编译器中尝试做什么？

谢谢!!

编辑:

我尝试了卸载libv8并重新安装的解决方案brew install.它也提到了几个类似的问题.没运气.

我也试过了CC,CXX和CPP环境变量描述在这里,虽然我不认为有,因为它已经拿起我的任何影响gcc v4.6编译器.

小智.. 163

这些步骤对我有用.

操作系统:Maverick Ruby:2.1.1

gem uninstall libv8
gem install therubyracer -v '0.11.3'
gem install libv8 -v '3.11.8.13' -- --with-system-v8

小智.. 71

对于那些在OS X El Capitan中遇到此问题的人来说,来自therubyracer问题线程的这个解决方案最终对我有用:

brew tap homebrew/versions
brew install v8-315

gem install libv8 -v '3.16.14.13' -- --with-system-v8
gem install therubyracer -- --with-v8-dir=/usr/local/opt/v8-315

bundle install

我之前也跑过brew install gcc,但我不确定这是否真的有必要.

撰写答案