Build fails on Ubuntu x86_64 due to permission problem

[dnrce]

When trying to run bundle update therubyracer I get a compilation error. I'm using Ubuntu 12.10 x86_64. I have purged all old versions of therubyracer and libv8.

My Gemfile includes the line

gem 'therubyracer'

and I do not explicitly require libv8.

Here is the full error sent to stdout:

Installing therubyracer (0.11.3) with native extensions 
Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.

        /usr/bin/ruby1.9.1 extconf.rb 
checking for main() in -lpthread... yes
*** 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=/usr/bin/ruby1.9.1
    --with-pthreadlib
    --without-pthreadlib
    --enable-debug
    --disable-debug
/var/lib/gems/1.9.1/gems/libv8-3.11.8.13-x86_64-linux/ext/libv8/location.rb:15:in `initialize': Permission denied - /var/lib/gems/1.9.1/gems/libv8-3.11.8.13-x86_64-linux/ext/libv8/.location.yml (Errno::EACCES)
    from /var/lib/gems/1.9.1/gems/libv8-3.11.8.13-x86_64-linux/ext/libv8/location.rb:15:in `open'
    from /var/lib/gems/1.9.1/gems/libv8-3.11.8.13-x86_64-linux/ext/libv8/location.rb:15:in `load!'
    from /var/lib/gems/1.9.1/gems/libv8-3.11.8.13-x86_64-linux/lib/libv8.rb:6:in `configure_makefile'
    from extconf.rb:32:in `<main>'


Gem files will remain installed in ~/.bundler/tmp/20654/gems/therubyracer-0.11.3 for inspection.
Results logged to ~/.bundler/tmp/20654/gems/therubyracer-0.11.3/ext/v8/gem_make.out
An error occurred while installing therubyracer (0.11.3), and Bundler cannot continue.
Make sure that `gem install therubyracer -v '0.11.3'` succeeds before bundling.

The file .location.yml has permissions set to 600. Running sudo gem install therubyracer -v '0.11.3' succeeds, and then bundle update therubyracer can complete.

[ignisf]

@cowboyd, I cannot replicate this with rake binary on my system, however the permissions of .location.yml are indeed 0600 (only?) in the currently published x86_64-linux binary of libv8.

[ignisf]

I suspect that a simple chmod in ext/libv8/location.rb would ensure consistency, however I cannot test this as I haven't been able to replicate generating .location.yml with 0600 permissions.

diff --git a/ext/libv8/location.rb b/ext/libv8/location.rb
index 5532a73..0c74270 100644
--- a/ext/libv8/location.rb
+++ b/ext/libv8/location.rb
@@ -7,6 +7,7 @@ module Libv8
     def install!
       File.open(Pathname(__FILE__).dirname.join('.location.yml'), "w") do |f|
         f.write self.to_yaml
+        f.chmod 0644
       end
       return 0
     end

[panmari]

I tried to manually set the permission by executing

 chmod 0644

On .location.yml, but the issue remained. The workaround suggested by @zoombody works, though.

[dnrce]

@panmari I'm surprised by that. Did you use sudo to perform the chmod?

[panmari]

@zoombody yes I did
On Jan 30, 2013 6:22 PM, "Dan Rice" notifications@github.com wrote:

@panmari https://github.com/panmari I'm surprised by that. Did you use
sudo to perform the chmod?

—
Reply to this email directly or view it on GitHubhttps://github.com//issues/236#issuecomment-12901140.

[dnrce]

It turns out there are other files with permissions set to 0600. When I repeated @panmari's test, the error pointed to files other than .location.yml.

The following files all need to be hit with sudo chmod +r:

/var/lib/gems/1.9.1/gems/libv8-3.11.8.13-x86_64-linux/ext/libv8/.location.yml
/var/lib/gems/1.9.1/gems/libv8-3.11.8.13-x86_64-linux/vendor/v8/out/x64.release/obj.target/tools/gyp/libv8_base.a
/var/lib/gems/1.9.1/gems/libv8-3.11.8.13-x86_64-linux/vendor/v8/out/x64.release/obj.target/tools/gyp/libv8_snapshot.a

After doing so, bundle install succeeds.

Incidentally two other files are not world-readable but they don't affect the build of therubyracer:

/var/lib/gems/1.9.1/gems/libv8-3.11.8.13-x86_64-linux/vendor/v8/out/x64.release/obj.target/tools/gyp/libv8_nosnapshot.a
/var/lib/gems/1.9.1/gems/libv8-3.11.8.13-x86_64-linux/vendor/v8/out/x64.release/obj.target/tools/gyp/libpreparser_lib.a

[ignisf]

@zoombody your PR was merged and this issue will be fixed by the next release of libv8.