我已经使用以下命令在windows上安装了libv8 gem：
gem install libv8 -- --with-system-v8
然后，当我尝试安装therubyracer时，它会给我一条长错误消息：
Installing therubyracer 0.12.2 with native extensions
Gem::Ext::BuildError: ERROR: Failed to build gem native extension.
current directory: D:/Ruby21-x64/lib/ruby/gems/2.1.0/gems/therubyracer- 0.12.2/ext/v8
D:/Ruby21-x64/bin/ruby.exe -r ./siteconf20160105-4924-101vdyd.rb extconf.rb
checking for main() in -lpthread... 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=D:/Ruby21-x64/bin/ruby
--with-pthreadlib
--without-pthreadlib
--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
D:/Ruby21-x64/lib/ruby/gems/2.1.0/gems/libv8-3.16.14.13/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 3.16.14.13 installed. You may
need to special --with-v8-dir options if it is in a non-standard
location
thanks,
The Mgmt
我所理解的是，另一个读者想要找到v8。我已经安装了Node.js，Node.js已经有了它。有可能使用它吗？或者还有其他解决方案？
此错误出现在OS X El Capitan中。只需将v8@3.15用于therubyracer。
brew install v8@3.15
bundle config --local build.libv8 --with-system-v8
bundle config --local build.therubyracer --with-v8-dir=/usr/local/opt/v8@3.15
bundle install
检查此问题的详细信息
我也面临这个问题，并在上面花了很多时间
$ brew install v8@3.15
$ bundle config build.libv8 --with-system-v8
$ bundle config build.therubyracer --with-v8-dir=$(brew --prefix v8@3.15)
$ bundle install
在MacOS Mojave上运行良好：
-
安装v8@3.15
brew install v8@3.15 -
编辑配置文件（在我的情况下是
vi ~/.zshrc）并添加以下内容：export PATH="/usr/local/opt/v8@3.15/bin:$PATH" export LDFLAGS="-L/usr/local/opt/v8@3.15/lib" export CPPFLAGS="-I/usr/local/opt/v8@3.15/include" -
在这种情况下安装therubyracer版本0.12.2:
gem install therubyracer -v '0.12.2' -- --with-v8-dir=/usr/local/opt/v8@3.15
@sushilprj的建议很有魅力。
我只需要运行一个额外的东西，因为我在尝试"；brew安装v8@3.15"
错误：您的用户无法写入以下目录：/usr/local/share/man/man5
您应该将这些目录的所有权更改为您的用户
sudo chown-R$（whoami）/usr/local/share/man/man5
所以，我执行了：
$sudo chown -R $(whoami) /usr/local/share/man/man5
然后我执行了@sushilprj建议的4个命令。
确保您需要therubyracer-事实证明，对于我们的案例，我们根本不需要它，只是删除了它并使用了node-https://kmitov.com/posts/we-dont-need-therubyracer-and-the-libv8-error-for-compiling-native-extensions/