Fix therubyracer/libv8 (0.12.1) installation on Ma

2020-05-25 01:58发布

OK, I’m at the end of my tether with this. There are a few similar questions but they all refer to therubyracer 0.10, and they mostly conclude that the problem can be fixed by upgrading to 0.12.

I’m having similar problems, but when I use 0.12.

Similar questions

I’m having problems using ‘standard’ (xcode?) gcc, and both apple-gcc42 and gcc from homebrew. I’ve tried both --with-system-v8 and --without-system-v8, and again, no dice.

Here’s some logs:

Starting from scratch…

 $ cd ~/Documents/code/website
 $ rvm gemset empty
 $ ruby -v
 ruby 1.9.3p448 (2013-06-27 revision 41675) [x86_64-darwin10.8.0]
 $ grep rubyracer Gemfile
 gem 'therubyracer', '~> 0.12.0'
 $ brew list | grep v8
 $ cat ~/.bundle/config 
 $ cat .bundle/config 
 BUNDLE_BIN: bin
 $ $CXX
 $ $CPP
 $ $CC
 $ which gcc
 /usr/bin/gcc
 $ which g++
 /usr/bin/g++
 $ g++ -v
 Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with- 
 gxx-include-dir=/usr/include/c++/4.2.1
 Apple LLVM version 5.1 (clang-503.0.38) (based on LLVM 3.4svn)
 Target: x86_64-apple-darwin13.0.0
 Thread model: posix

Try a bundle install

Installing libv8 (3.16.14.3) 
Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.

    /Users/chris/.rvm/rubies/ruby-1.9.3-p448/bin/ruby extconf.rb 
creating Makefile
Compiling v8 for x64
Using python 2.7.5
Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/usr/include/c++/4.2.1
Unable to find a compiler officially supported by v8.
It is recommended to use GCC v4.4 or higher
Using compiler: g++
Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/usr/include/c++/4.2.1
Unable to find a compiler officially supported by v8.
It is recommended to use GCC v4.4 or higher
../src/cached-powers.cc:136:18: error: unused variable 'kCachedPowersLength' [-Werror,-Wunused-const-variable]
static const int kCachedPowersLength = ARRAY_SIZE(kCachedPowers);
                 ^
1 error generated.
make[1]: *** [/Users/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3/vendor/v8/out/x64.release/obj.target/preparser_lib/src/cached-powers.o] Error 1
make: *** [x64.release] Error 2
/Users/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3/ext/libv8/location.rb:36:in `block in verify_installation!': libv8 did not install properly, expected binary v8 archive '/Users/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3/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/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3/ext/libv8/location.rb:35:in `each'
    from /Users/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3/ext/libv8/location.rb:35:in `verify_installation!'
    from /Users/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3/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
  CXX(target) /Users/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3/vendor/v8/out/x64.release/obj.target/preparser_lib/src/allocation.o
  CXX(target) /Users/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3/vendor/v8/out/x64.release/obj.target/preparser_lib/src/atomicops_internals_x86_gcc.o
  CXX(target) /Users/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3/vendor/v8/out/x64.release/obj.target/preparser_lib/src/bignum.o
  CXX(target) /Users/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3/vendor/v8/out/x64.release/obj.target/preparser_lib/src/bignum-dtoa.o
  CXX(target) /Users/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3/vendor/v8/out/x64.release/obj.target/preparser_lib/src/cached-powers.o


Gem files will remain installed in /Users/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3 for inspection.
Results logged to /Users/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3/ext/libv8/gem_make.out

An error occurred while installing libv8 (3.16.14.3), and Bundler cannot continue.

Bad times.

Error message advises that gcc 4.4+ is recommended. We can do that.

$ export CXX=/usr/local/Cellar/gcc48/4.8.2/bin/g++-4.8 
$ export CPP=/usr/local/Cellar/gcc48/4.8.2/bin/cpp-4.8 
$ export CC=/usr/local/Cellar/gcc48/4.8.2/bin/gcc-4.8 
$ which $CXX
/usr/local/Cellar/gcc48/4.8.2/bin/g++-4.8
$ which $CPP
/usr/local/Cellar/gcc48/4.8.2/bin/cpp-4.8
$ which $CC
/usr/local/Cellar/gcc48/4.8.2/bin/gcc-4.8
$ bundle install
…
Installing libv8 (3.16.14.3) 
Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.

        /Users/chris/.rvm/rubies/ruby-1.9.3-p448/bin/ruby extconf.rb 
creating Makefile
Compiling v8 for x64
Using python 2.7.5
Using compiler: /usr/local/Cellar/gcc48/4.8.2/bin/g++-4.8
g++-4.8: error: unrecognized command line option '-Wnewline-eof'
make[1]: *** [/Users/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3/vendor/v8/out/x64.release/obj.target/preparser_lib/src/allocation.o] Error 1
make: *** [x64.release] Error 2
/Users/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3/ext/libv8/location.rb:36:in `block in verify_installation!': libv8 did not install properly, expected binary v8 archive '/Users/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3/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/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3/ext/libv8/location.rb:35:in `each'
    from /Users/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3/ext/libv8/location.rb:35:in `verify_installation!'
    from /Users/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3/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
  CXX(target) /Users/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3/vendor/v8/out/x64.release/obj.target/preparser_lib/src/allocation.o


Gem files will remain installed in /Users/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3 for inspection.
Results logged to /Users/chris/.rvm/gems/ruby-1.9.3-p448@website/gems/libv8-3.16.14.3/ext/libv8/gem_make.out

An error occurred while installing libv8 (3.16.14.3), and Bundler cannot continue.
Make sure that `gem install libv8 -v '3.16.14.3'` succeeds before bundling.

Worse times!

OK. So to fix the issues with therubyracer 0.10, some people recommend brew installing v8, then telling rubygems to use system v8. Let’s see what happens!

$ brew install v8
==> Downloading https://github.com/v8/v8/archive/3.21.17.tar.gz
Already downloaded: /Library/Caches/Homebrew/v8-3.21.17.tar.gz
==> Checking out http://gyp.googlecode.com/svn/trunk
==> make native -j4 library=shared snapshot=on console=readline i18nsupport=off
                

7条回答
啃猪蹄的小仙女
2楼-- · 2020-05-25 02:47

It could be that rubygems is fetching the wrong binaries for your system.

Diagnosis:

  • Compare the output of gem env platform to 'Kernel Version' under  > About This Mac > System Report > Software
  • If those don't match (e.g. Kernel Version: 14.4.0 and x86_64-darwin-12) then RubyGems is grabbing the wrong version of therubyracer and libv8 for your system

Fix:

  • short-term: bundle update therubyracer --platform=x86_64-darwin-14
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