gem install libv8 --version '3.11.8.17' on ruby (windows)

Question

The problem is as following.

Error installing libv8:
ERROR: Failed to build gem native extension.

    D:/Ruby193/bin/ruby.exe extconf.rb
    creating Makefi         


        

Answer 1

This error is about a libv8-3.11.8.17\ext\libv8\builder.rb script. On line 60 we can see this code:

`python -c 'import platform; print(platform.python_version())'`.chomp

This is a wrong python command syntax in Windows. You should use a double quotes, like this:

`python -c "import platform; print(platform.python_version())"`.chomp

After fixing this script, you should run gem install with "-l" (use local only) key. If you don't, gem will download a script with an error again.

Answer 2

I could be reading this wrong, but I think the problem is this line:

unless system 'which python2 2>&1 > /dev/null'

It's looking for python2 when in fact the command for python is simply python.

Perhaps try aliasing python to python2.

Answer 3

Try with https://github.com/eakmotion/therubyracer_for_windows. I had solved same problem on my windows machine using this solution.

Answer 4

Try this:

gem install libv8 -v '3.11.8.17' -- --with-system-v8

This error was a pain untill I run the above command :)

Answer 5

Follow these steps:

1. Get suitable Python from here http://python.org/download/
2. Set path with this command SET PATH=<ruby directory>;<python directory> (e.g. SET PATH=C:\Ruby192\bin;C:\Python27)

And now install your desire gem

gem install libv8

Got this solution from here.

I wonder if you are getting this error for version. Try this:

gem install libv8 --version 3.11.8.0 

Answer 6

do: gem install rmagick -v '2.13.2'

and then do: gem install libv8 -v 3.11.8.17 -- --with-system-v8