Fails to compile on Centos5

[jperry]

Hi,

I have gem 'libv8' in my Gemfile using ruby 1.9.3 and I'm getting a failure when I run bundle install

creating Makefile
Using compiler: /usr/bin/g++44
Traceback (most recent call last):
  File "build/gyp/gyp", line 15, in ?
    import gyp
  File "build/gyp/pylib/gyp/__init__.py", line 8, in ?
    import gyp.input
  File "build/gyp/pylib/gyp/input.py", line 14, in ?
    import gyp.common
  File "build/gyp/pylib/gyp/common.py", line 375
    with open(source_path) as source_file:
            ^
SyntaxError: invalid syntax
gmake: *** [out/Makefile.x64] Error 1
GYP_GENERATORS=make \
    build/gyp/gyp --generator-output="out" build/all.gyp \
                  -Ibuild/standalone.gypi --depth=. \
                  -Dv8_target_arch=x64 \
                  -S.x64 -Dhost_arch=x64

Any thoughts on this?

[cheald]

This is because v8 needs python 2.6 or better to install. Centos5 ships with 2.4. You'll have to upgrade python, as well as your /usr/bin/python symlink. Additionally, you need GCC4.3 or 4.4.

yum install gcc44-c++ python26 -y
ln -s /usr/bin/python26 /usr/local/bin/python

This got it installing for me.

[lidaobing]

@cheald I think it's dangerous to replace the /usr/bin/python

[cheald]

@lidaobing /usr/local/bin/python just "hides" /usr/bin/python, it doesn't replace it. Installing python-2.6 adds a /usr/bin/python26 binary parallel to the /usr/bin/python 2.4 binary. We just symlink that to /usr/local/bin and it's found first when the path is searched.

[lidaobing]

@cheald you code is correct, but description is wrong: " You'll have to upgrade python, as well as your /usr/bin/python symlink."