==> Creating clean working copy [build]...done
==> Making package: ruby-libv8 (Tue Jan  5 09:24:11 EST 2016)
==> Retrieving sources...
  -> Found libv8-
==> Validating source files with sha256sums...
    libv8- ... Passed
==> Making package: ruby-libv8 (Tue Jan  5 09:24:13 EST 2016)
==> Checking runtime dependencies...
==> Installing missing dependencies...
warning: skipping target: ruby
resolving dependencies...
looking for conflicting packages...

Packages (3) libyaml-0.1.6-1  python2-2.7.11-1  ruby-2.3.0-1

Total Installed Size:  83.05 MiB

:: Proceed with installation? [Y/n] 
checking keyring...
checking package integrity...
loading package files...
checking for file conflicts...
checking available disk space...
installing libyaml...
installing ruby...
The default location of gem installs is $HOME/.gem/ruby
Add the following line to your PATH if you plan to install using gem
$(ruby -rubygems -e "puts Gem.user_dir")/bin
If you want to install to the system wide location, you must either:
edit /etc/gemrc or run gem with the --no-user-install flag.
Optional dependencies for ruby
    ruby-docs: Ruby documentation
    tk: for Ruby/TK
installing python2...
Optional dependencies for python2
    tk: for IDLE
==> Checking buildtime dependencies...
==> Retrieving sources...
  -> Found libv8-
==> WARNING: Skipping verification of source file PGP signatures.
==> Validating source files with sha256sums...
    libv8- ... Passed
==> Extracting sources...
==> Entering fakeroot environment...
==> Starting package()...
Building native extensions.  This could take a while...
ERROR:  Error installing libv8-
	ERROR: Failed to build gem native extension.

    current directory: /build/ruby-libv8/pkg/ruby-libv8/usr/lib/ruby/gems/2.3.0/gems/libv8-
/usr/bin/ruby -r ./siteconf20160105-196-1k67ofk.rb extconf.rb
creating Makefile
which: no python in (/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/bin/site_perl:/usr/bin/vendor_perl:/usr/bin/core_perl)
Compiling v8 for arm
Using python 2.7.11
Using compiler: /usr/bin/g++
../src/bignum.cc: In member function 'void v8::internal::Bignum::AssignDecimalString(v8::internal::Vector<const char>)':
../src/bignum.cc:103:6: error: assuming signed overflow does not occur when assuming that (X + c) < X is always false [-Werror=strict-overflow]
 void Bignum::AssignDecimalString(Vector<const char> value) {
cc1plus: all warnings being treated as errors
make[1]: *** [/build/ruby-libv8/pkg/ruby-libv8/usr/lib/ruby/gems/2.3.0/gems/libv8-] Error 1
make: *** [arm.release] Error 2
/build/ruby-libv8/pkg/ruby-libv8/usr/lib/ruby/gems/2.3.0/gems/libv8- `block in verify_installation!': libv8 did not install properly, expected binary v8 archive '/build/ruby-libv8/pkg/ruby-libv8/usr/lib/ruby/gems/2.3.0/gems/libv8-'to exist, but it was not found (Libv8::Location::Vendor::ArchiveNotFound)
	from /build/ruby-libv8/pkg/ruby-libv8/usr/lib/ruby/gems/2.3.0/gems/libv8- `each'
	from /build/ruby-libv8/pkg/ruby-libv8/usr/lib/ruby/gems/2.3.0/gems/libv8- `verify_installation!'
	from /build/ruby-libv8/pkg/ruby-libv8/usr/lib/ruby/gems/2.3.0/gems/libv8- `install!'
	from extconf.rb:7:in `<main>'
build/gyp/gyp --generator-output="out" build/all.gyp \
              -Ibuild/standalone.gypi --depth=. \
              -Dv8_target_arch=arm \
              -S.arm  -Dv8_enable_backtrace=1 -Dv8_can_use_vfp2_instructions=false -Dv8_can_use_vfp3_instructions=false -Dv8_use_arm_eabi_hardfloat=true
make[1]: Entering directory '/build/ruby-libv8/pkg/ruby-libv8/usr/lib/ruby/gems/2.3.0/gems/libv8-'
  CXX(target) /build/ruby-libv8/pkg/ruby-libv8/usr/lib/ruby/gems/2.3.0/gems/libv8-
  CXX(target) /build/ruby-libv8/pkg/ruby-libv8/usr/lib/ruby/gems/2.3.0/gems/libv8-
  CXX(target) /build/ruby-libv8/pkg/ruby-libv8/usr/lib/ruby/gems/2.3.0/gems/libv8-
tools/gyp/preparser_lib.target.arm.mk:116: recipe for target '/build/ruby-libv8/pkg/ruby-libv8/usr/lib/ruby/gems/2.3.0/gems/libv8-' failed
make[1]: Leaving directory '/build/ruby-libv8/pkg/ruby-libv8/usr/lib/ruby/gems/2.3.0/gems/libv8-'
Makefile:195: recipe for target 'arm.release' failed

extconf failed, exit code 1

Gem files will remain installed in /build/ruby-libv8/pkg/ruby-libv8/usr/lib/ruby/gems/2.3.0/gems/libv8- for inspection.
Results logged to /build/ruby-libv8/pkg/ruby-libv8/usr/lib/ruby/gems/2.3.0/extensions/armv7l-linux/2.3.0/libv8-
==> ERROR: A failure occurred in package().
==> Removing installed dependencies...
checking dependencies...
:: glib2 optionally requires python2: for gdbus-codegen and gtester-report

Packages (3) libyaml-0.1.6-1  python2-2.7.11-1  ruby-2.3.0-1

Total Removed Size:  83.05 MiB

:: Do you want to remove these packages? [Y/n] 
removing ruby...
removing python2...
removing libyaml...
==> ERROR: Build failed, check /chroot/armv7/build/build