libv8 fails to compile with OS X 10.11.4/Xcode 7.3/clang 7.3.0

[RISCfuture]

Installing libv8 3.16.14.13 with native extensions

Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

    current directory: /Users/tmorgan/.rvm/gems/ruby-2.3.0@squash/gems/libv8-3.16.14.13/ext/libv8
/Users/tmorgan/.rvm/rubies/ruby-2.3.0/bin/ruby -r ./siteconf20160321-41246-m0y5mf.rb extconf.rb
creating Makefile
Compiling v8 for x64
Using python 2.7.10
Using compiler: /usr/bin/c++ (clang version 7.3.0)
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: file: /Users/tmorgan/.rvm/gems/ruby-2.3.0@squash/gems/libv8-3.16.14.13/vendor/v8/out/x64.release/obj.target/preparser_lib/src/atomicops_internals_x86_gcc.o has no symbols
In file included from ../src/accessors.cc:28:
In file included from ../src/v8.h:60:
In file included from ../src/objects-inl.h:38:
In file included from ../src/elements.h:32:
../src/objects.h:5252:44: error: shifting a negative signed value is undefined [-Werror,-Wshift-negative-value]
  static const int kElementsKindMask = (-1 << kElementsKindShift) &
                                        ~~ ^
../src/objects.h:7386:36: error: shifting a negative signed value is undefined [-Werror,-Wshift-negative-value]
      (~kMaxCachedArrayIndexLength << kArrayIndexHashLengthShift) |
       ~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^
2 errors generated.
make[1]: *** [/Users/tmorgan/.rvm/gems/ruby-2.3.0@squash/gems/libv8-3.16.14.13/vendor/v8/out/x64.release/obj.target/v8_base/src/accessors.o] Error 1
make: *** [x64.release] Error 2
/Users/tmorgan/.rvm/gems/ruby-2.3.0@squash/gems/libv8-3.16.14.13/ext/libv8/location.rb:36:in `block in verify_installation!': libv8 did not install properly, expected binary v8 archive '/Users/tmorgan/.rvm/gems/ruby-2.3.0@squash/gems/libv8-3.16.14.13/vendor/v8/out/x64.release/obj.target/tools/gyp/libv8_base.a'to exist, but it was not found (Libv8::Location::Vendor::ArchiveNotFound)
    from /Users/tmorgan/.rvm/gems/ruby-2.3.0@squash/gems/libv8-3.16.14.13/ext/libv8/location.rb:35:in `each'
    from /Users/tmorgan/.rvm/gems/ruby-2.3.0@squash/gems/libv8-3.16.14.13/ext/libv8/location.rb:35:in `verify_installation!'
    from /Users/tmorgan/.rvm/gems/ruby-2.3.0@squash/gems/libv8-3.16.14.13/ext/libv8/location.rb:26:in `install!'
    from extconf.rb:7:in `<main>'
GYP_GENERATORS=make \
    build/gyp/gyp --generator-output="out" build/all.gyp \
                  -Ibuild/standalone.gypi --depth=. \
                  -Dv8_target_arch=x64 \
                  -S.x64  -Dv8_enable_backtrace=1 -Dv8_can_use_vfp2_instructions=true -Darm_fpu=vfpv2 -Dv8_can_use_vfp3_instructions=true -Darm_fpu=vfpv3 -Dwerror=''
  CXX(target) /Users/tmorgan/.rvm/gems/ruby-2.3.0@squash/gems/libv8-3.16.14.13/vendor/v8/out/x64.release/obj.target/preparser_lib/src/allocation.o
  CXX(target) /Users/tmorgan/.rvm/gems/ruby-2.3.0@squash/gems/libv8-3.16.14.13/vendor/v8/out/x64.release/obj.target/preparser_lib/src/atomicops_internals_x86_gcc.o
  CXX(target) /Users/tmorgan/.rvm/gems/ruby-2.3.0@squash/gems/libv8-3.16.14.13/vendor/v8/out/x64.release/obj.target/preparser_lib/src/bignum.o
  CXX(target) /Users/tmorgan/.rvm/gems/ruby-2.3.0@squash/gems/libv8-3.16.14.13/vendor/v8/out/x64.release/obj.target/preparser_lib/src/bignum-dtoa.o
  CXX(target) /Users/tmorgan/.rvm/gems/ruby-2.3.0@squash/gems/libv8-3.16.14.13/vendor/v8/out/x64.release/obj.target/preparser_lib/src/cached-powers.o
  CXX(target) /Users/tmorgan/.rvm/gems/ruby-2.3.0@squash/gems/libv8-3.16.14.13/vendor/v8/out/x64.release/obj.target/preparser_lib/src/conversions.o
  CXX(target) /Users/tmorgan/.rvm/gems/ruby-2.3.0@squash/gems/libv8-3.16.14.13/vendor/v8/out/x64.release/obj.target/preparser_lib/src/diy-fp.o
  CXX(target) /Users/tmorgan/.rvm/gems/ruby-2.3.0@squash/gems/libv8-3.16.14.13/vendor/v8/out/x64.release/obj.target/preparser_lib/src/dtoa.o
  CXX(target) /Users/tmorgan/.rvm/gems/ruby-2.3.0@squash/gems/libv8-3.16.14.13/vendor/v8/out/x64.release/obj.target/preparser_lib/src/fast-dtoa.o
  CXX(target) /Users/tmorgan/.rvm/gems/ruby-2.3.0@squash/gems/libv8-3.16.14.13/vendor/v8/out/x64.release/obj.target/preparser_lib/src/fixed-dtoa.o
  CXX(target) /Users/tmorgan/.rvm/gems/ruby-2.3.0@squash/gems/libv8-3.16.14.13/vendor/v8/out/x64.release/obj.target/preparser_lib/src/once.o
  CXX(target) /Users/tmorgan/.rvm/gems/ruby-2.3.0@squash/gems/libv8-3.16.14.13/vendor/v8/out/x64.release/obj.target/preparser_lib/src/preparse-data.o
  CXX(target) /Users/tmorgan/.rvm/gems/ruby-2.3.0@squash/gems/libv8-3.16.14.13/vendor/v8/out/x64.release/obj.target/preparser_lib/src/preparser.o
  CXX(target) /Users/tmorgan/.rvm/gems/ruby-2.3.0@squash/gems/libv8-3.16.14.13/vendor/v8/out/x64.release/obj.target/preparser_lib/src/preparser-api.o
  CXX(target) /Users/tmorgan/.rvm/gems/ruby-2.3.0@squash/gems/libv8-3.16.14.13/vendor/v8/out/x64.release/obj.target/preparser_lib/src/scanner.o
  CXX(target) /Users/tmorgan/.rvm/gems/ruby-2.3.0@squash/gems/libv8-3.16.14.13/vendor/v8/out/x64.release/obj.target/preparser_lib/src/strtod.o
  CXX(target) /Users/tmorgan/.rvm/gems/ruby-2.3.0@squash/gems/libv8-3.16.14.13/vendor/v8/out/x64.release/obj.target/preparser_lib/src/token.o
  CXX(target) /Users/tmorgan/.rvm/gems/ruby-2.3.0@squash/gems/libv8-3.16.14.13/vendor/v8/out/x64.release/obj.target/preparser_lib/src/unicode.o
  CXX(target) /Users/tmorgan/.rvm/gems/ruby-2.3.0@squash/gems/libv8-3.16.14.13/vendor/v8/out/x64.release/obj.target/preparser_lib/src/utils.o
  LIBTOOL-STATIC /Users/tmorgan/.rvm/gems/ruby-2.3.0@squash/gems/libv8-3.16.14.13/vendor/v8/out/x64.release/libpreparser_lib.a
  CXX(target) /Users/tmorgan/.rvm/gems/ruby-2.3.0@squash/gems/libv8-3.16.14.13/vendor/v8/out/x64.release/obj.target/preparser/preparser/preparser-process.o
  LINK(target) /Users/tmorgan/.rvm/gems/ruby-2.3.0@squash/gems/libv8-3.16.14.13/vendor/v8/out/x64.release/preparser
  CXX(target) /Users/tmorgan/.rvm/gems/ruby-2.3.0@squash/gems/libv8-3.16.14.13/vendor/v8/out/x64.release/obj.target/v8_base/src/accessors.o

extconf failed, exit code 1

Gem files will remain installed in /Users/tmorgan/.rvm/gems/ruby-2.3.0@squash/gems/libv8-3.16.14.13 for inspection.
Results logged to /Users/tmorgan/.rvm/gems/ruby-2.3.0@squash/extensions/x86_64-darwin-15/2.3.0/libv8-3.16.14.13/gem_make.out

[tnsderek]

+1 I have the same issue. Do you have a solution @RISCfuture ?

[RISCfuture]

I just compiled libv8 and therubyracer with --use-system-v8 (or whatever the option is called).

[kovyrin]

@RISCfuture what version of libv8 did you use in your system to be able to do that? I've tried the one from homebrew master (4.x) and one from homebrew versions (3.15) - didn't work.

[kovyrin]

The only way I managed to install it all so far:

1. brew install https://gist.githubusercontent.com/kovyrin/35a29d83749f7515ca00/raw/29f7f4b7d329be94c7877f7533ea91598d5f898c/v8.rb
2. gem install libv8 -v 3.16.14.13 -- --with-system-v8
3. gem install therubyracer -v '0.12.2' -- --with-system-v8 --with-v8-dir=/usr/local/opt/v8

[RISCfuture]

I tapped homebrew/versions and installed v8-315.

[kovyrin]

cool, thanks!

[Haegin]

The following worked for me:

brew tap homebrew/versions
brew uninstall v8
brew install v8-315
gem uninstall -a libv8
gem uninstall -a therubyracer
gem install libv8 -v '3.16.14.13' -- --with-system-v8
gem install therubyracer -v '0.12.1' -- --with-v8-dir=$(brew --prefix v8-315)

The versions are the ones I needed from my Gemfile.lock.

[joergschiller]

Unfortunately the hints above doesn't work for me. I guess it's because of the mismatch of v8 version between 3.15 in brew and the 3.16 that is required by therubyracer.

The following worked for me (using older Apple's GCC for compiling):

gem uninstall -a libv8
gem uninstall -a therubyracer

brew tap homebrew/dupes
brew install apple-gcc42

gem install libv8 -v '3.16.14.7' -- --with-cxx=/usr/local/bin/g++-4.2
gem install therubyracer -v '0.12.1'

Change the gem versions according to your Gemfile.lock. Or omit the gem install and just tell bundler to use the build options:

bundle config --local build.libv8 --with-cxx=/usr/local/bin/g++-4.2
bundle

[JohnMorales]

@joergschiller's bundle config seems to be the best solution.

[AHaymond]

Thank you @joergschiller!!! That solved all my issues after trying numerous other avenues, and thanks for including the bundle config!