title: Unable To Install 'therubyracer v0.12.3' gem in M1 Macbook Pro
body: <p>I am using M1 Macbook Pro and wants to install therubyracer and libv8 for a rails webapp. But I am unable to do so because of the errors described below. There are several solutions available on the internet but none of them is working for me.</p>
  <p>Operating System: <code>macOS Big Sur v11.1</code>.</p>
  <p>It would be very helpful if someone can help me with this.</p>
  <p>Log:</p>
  <pre class="lang-sh prettyprint-override"><code>❯ ruby -v
  ruby 2.5.5p157 (2019-03-15 revision 67260) [-darwin20]
  ❯ bundle -v
  Bundler version 1.17.3
  ❯ brew -v
  Homebrew 2.7.5
  Homebrew/homebrew-core (git revision e04a30; last commit 2021-01-20)
  Homebrew/homebrew-cask (git revision d128de; last commit 2021-01-20)
  ❯ uname -a
  Darwin Vaibhavs-MacBook-Pro.local 20.2.0 Darwin Kernel Version 20.2.0: Wed Dec  2 20:40:21 PST 2020; root:xnu-7195.60.75~1/RELEASE_ARM64_T8101 arm64
  
  
  ❯ brew search v8
  ==&gt; Formulae
  v8 ✔                                                                 v8@3.15
  ==&gt; Casks
  amitv87-pip
  
  
  ❯ brew install v8@3.15
  Updating Homebrew...
  ==&gt; Auto-updated Homebrew!
  Updated 2 taps (homebrew/core and homebrew/cask).
  ==&gt; Updated Formulae
  Updated 3 formulae.
  ==&gt; Updated Casks
  Updated 3 casks.
  
  Error: v8@3.15: no bottle available!
  You can try to install from source with:
    brew install --build-from-source v8@3.15
  Please note building from source is unsupported. You will encounter build
  failures with some formulae. If you experience any issues please create pull
  requests instead of asking for help on Homebrew's GitHub, Twitter or any other
  official channels.
  
  
  ❯ brew install --build-from-source v8@3.15
  Updating Homebrew...
  ==&gt; Auto-updated Homebrew!
  Updated 1 tap (homebrew/cask).
  ==&gt; Updated Casks
  Updated 1 cask.
  
  ==&gt; Cloning https://chromium.googlesource.com/external/gyp.git
  Updating /Users/vaibhavgupta/Library/Caches/Homebrew/v8@3.15--gyp--git
  ==&gt; Checking out revision f7bc250ccc4d619a1cf238db87e5979f89ff36d7
  HEAD is now at f7bc250c Make gyp/win32 compatible with upstream ninja.
  HEAD is now at f7bc250c Make gyp/win32 compatible with upstream ninja.
  ==&gt; Downloading https://github.com/v8/v8-git-mirror/archive/3.15.11.18.tar.gz
  Already downloaded: /Users/vaibhavgupta/Library/Caches/Homebrew/downloads/26ea05158c6c6ebb67cc42075858df9a986f9c615513933b1e62bb707f707854--v8-3.15.11.18.tar.gz
  ==&gt; make native -j8 library=shared snapshot=on console=readline
  Last 15 lines from /Users/vaibhavgupta/Library/Logs/Homebrew/v8@3.15/01.make:
  Atomic32 Acquire_Load(volatile const Atomic32* ptr);
           ^
  In file included from ../src/conversions.cc:32:
  In file included from ../src/conversions-inl.h:42:
  In file included from ../src/platform.h:100:
  In file included from ../src/lazy-instance.h:94:
  ../src/once.h:115:7: error: no matching function for call to 'Acquire_Load'
    if (Acquire_Load(once) != ONCE_STATE_DONE) {
        ^~~~~~~~~~~~
  ../src/atomicops.h:125:10: note: candidate function not viable: no known conversion from 'v8::internal::OnceType *' (aka 'long *') to 'const volatile v8::internal::Atomic32 *' (aka 'const volatile int *') for 1st argument
  Atomic32 Acquire_Load(volatile const Atomic32* ptr);
           ^
  5 errors generated.
  make[1]: *** [/private/tmp/v8-3.15-20210120-4211-1soh8ig/v8-3.15.11.18/out/native/obj.target/preparser_lib/src/conversions.o] Error 1
  make: *** [native] Error 2
  
  Do not report this issue to Homebrew/brew or Homebrew/core!
  
  
  ❯ brew install v8
  ==&gt; Downloading https://homebrew.bintray.com/bottles/v8-8.8.278.14.arm64_big_sur.bottle.tar.gz
  Already downloaded: /Users/vaibhavgupta/Library/Caches/Homebrew/downloads/457adba5b4da5d7cb7d6d896218ebc5d8f1453782321e97a3df424f4a4e8a821--v8-8.8.278.14.arm64_big_sur.bottle.tar.gz
  ==&gt; Pouring v8-8.8.278.14.arm64_big_sur.bottle.tar.gz
    /opt/homebrew/Cellar/v8/8.8.278.14: 80 files, 39.9MB
  
  
  ❯ brew --prefix v8
  /opt/homebrew/opt/v8
  
  
  ❯ gem install libv8 -v '3.16.14.19'
  Fetching libv8-3.16.14.19.gem
  Building native extensions. This could take a while...
  ERROR:  Error installing libv8:
      ERROR: Failed to build gem native extension.
  
      current directory: /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19/ext/libv8
  /Users/vaibhavgupta/.rvm/rubies/ruby-2.5.5/bin/ruby -I /Users/vaibhavgupta/.rvm/rubies/ruby-2.5.5/lib/ruby/site_ruby/2.5.0 -r ./siteconf20210120-6051-11xeqcl.rb extconf.rb
  creating Makefile
  Applying /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19/patches/disable-building-tests.patch
  Applying /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19/patches/disable-werror-on-osx.patch
  Applying /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19/patches/disable-xcode-debugging.patch
  Applying /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19/patches/do-not-imply-vfp3-and-armv7.patch
  Applying /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19/patches/do-not-use-MAP_NORESERVE-on-freebsd.patch
  Applying /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19/patches/do-not-use-vfp2.patch
  Applying /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19/patches/fPIC-for-static.patch
  Compiling v8 for arm
  Using python 2.7.16
  Using compiler: c++ (clang version 12.0.0)
  Unable to find a compiler officially supported by v8.
  It is recommended to use GCC v4.4 or higher
  Beginning compilation. This will take some time.
  Building v8 with env CXX=c++ LINK=c++  /usr/bin/make arm.release vfp2=off vfp3=on hardfp=on ARFLAGS.target=crs werror=no
  GYP_GENERATORS=make \
      build/gyp/gyp --generator-output=&quot;out&quot; 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=true -Darm_fpu=vfpv3 -Dwerror='' -Dv8_use_arm_eabi_hardfloat=true
    CXX(target) /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19/vendor/v8/out/arm.release/obj.target/preparser_lib/src/allocation.o
  clang: warning: include path for libstdc++ headers not found; pass '-stdlib=libc++' on the command line to use the libc++ standard library instead [-Wstdlibcxx-not-found]
  In file included from ../src/allocation.cc:33:
  ../src/utils.h:33:10: fatal error: 'climits' file not found
  #include &lt;climits&gt;
           ^~~~~~~~~
  1 error generated.
  make[1]: *** [/Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19/vendor/v8/out/arm.release/obj.target/preparser_lib/src/allocation.o] Error 1
  make: *** [arm.release] Error 2
  /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19/ext/libv8/location.rb:36:in `block in verify_installation!': libv8 did not install properly, expected binary v8 archive '/Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19/vendor/v8/out/arm.release/obj.target/tools/gyp/libv8_base.a'to exist, but it was not found (Libv8::Location::Vendor::ArchiveNotFound)
      from /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19/ext/libv8/location.rb:35:in `each'
      from /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19/ext/libv8/location.rb:35:in `verify_installation!'
      from /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19/ext/libv8/location.rb:26:in `install!'
      from extconf.rb:7:in `&lt;main&gt;'
  
  extconf failed, exit code 1
  
  Gem files will remain installed in /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19 for inspection.
  Results logged to /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/extensions/-darwin-20/2.5.0/libv8-3.16.14.19/gem_make.out
  
  
  ❯ gem install libv8 -v '3.16.14.19' -- --with-system-v8
  Building native extensions with: '--with-system-v8'
  This could take a while...
  Successfully installed libv8-3.16.14.19
  Parsing documentation for libv8-3.16.14.19
  Installing ri documentation for libv8-3.16.14.19
  Done installing documentation for libv8 after 0 seconds
  1 gem installed
  
  
  ❯ gem install therubyracer -v '0.12.3'
  Building native extensions. This could take a while...
  ERROR:  Error installing therubyracer:
      ERROR: Failed to build gem native extension.
  
      current directory: /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/therubyracer-0.12.3/ext/v8
  /Users/vaibhavgupta/.rvm/rubies/ruby-2.5.5/bin/ruby -I /Users/vaibhavgupta/.rvm/rubies/ruby-2.5.5/lib/ruby/site_ruby/2.5.0 -r ./siteconf20210120-6195-ojni3j.rb extconf.rb
  checking for -lpthread... yes
  checking for -lobjc... yes
  checking for v8.h... no
  *** 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
      --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=/Users/vaibhavgupta/.rvm/rubies/ruby-2.5.5/bin/$(RUBY_BASE_NAME)
      --with-pthreadlib
      --without-pthreadlib
      --with-objclib
      --without-objclib
      --enable-debug
      --disable-debug
      --with-v8-dir
      --without-v8-dir
      --with-v8-include
      --without-v8-include=${v8-dir}/include
      --with-v8-lib
      --without-v8-lib=${v8-dir}/lib
  /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19/ext/libv8/location.rb:50:in `configure': By using --with-system-v8, you have chosen to use the version  (Libv8::Location::System::NotFoundError)
  of V8 found on your system and *not* the one that is bundled with
  the libv8 rubygem.
  
  However, your system version of v8 could not be located.
  
  Please make sure your system version of v8 that is compatible
  with 3.16.14.19 installed. You may need to use the
  --with-v8-dir option if it is installed in a non-standard location
      from /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19/lib/libv8.rb:7:in `configure_makefile'
      from extconf.rb:32:in `&lt;main&gt;'
  
  To see why this extension failed to compile, please check the mkmf.log which can be found here:
  
    /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/extensions/-darwin-20/2.5.0/therubyracer-0.12.3/mkmf.log
  
  extconf failed, exit code 1
  
  Gem files will remain installed in /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/therubyracer-0.12.3 for inspection.
  Results logged to /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/extensions/-darwin-20/2.5.0/therubyracer-0.12.3/gem_make.out
  
  
  ❯ gem install therubyracer -v '0.12.3' -- --with-v8-dir=/opt/homebrew/opt/v8
  Building native extensions with: '--with-v8-dir=/opt/homebrew/opt/v8'
  This could take a while...
  ERROR:  Error installing therubyracer:
      ERROR: Failed to build gem native extension.
  
      current directory: /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/therubyracer-0.12.3/ext/v8
  /Users/vaibhavgupta/.rvm/rubies/ruby-2.5.5/bin/ruby -I /Users/vaibhavgupta/.rvm/rubies/ruby-2.5.5/lib/ruby/site_ruby/2.5.0 -r ./siteconf20210120-6214-10f7ru2.rb extconf.rb --with-v8-dir\=/opt/homebrew/opt/v8
  checking for -lpthread... yes
  checking for -lobjc... yes
  checking for v8.h... no
  *** 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
      --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=/Users/vaibhavgupta/.rvm/rubies/ruby-2.5.5/bin/$(RUBY_BASE_NAME)
      --with-pthreadlib
      --without-pthreadlib
      --with-objclib
      --without-objclib
      --enable-debug
      --disable-debug
      --with-v8-dir
      --with-v8-include
      --without-v8-include=${v8-dir}/include
      --with-v8-lib
      --without-v8-lib=${v8-dir}/lib
  /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19/ext/libv8/location.rb:50:in `configure': By using --with-system-v8, you have chosen to use the version  (Libv8::Location::System::NotFoundError)
  of V8 found on your system and *not* the one that is bundled with
  the libv8 rubygem.
  
  However, your system version of v8 could not be located.
  
  Please make sure your system version of v8 that is compatible
  with 3.16.14.19 installed. You may need to use the
  --with-v8-dir option if it is installed in a non-standard location
      from /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19/lib/libv8.rb:7:in `configure_makefile'
      from extconf.rb:32:in `&lt;main&gt;'
  
  To see why this extension failed to compile, please check the mkmf.log which can be found here:
  
    /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/extensions/-darwin-20/2.5.0/therubyracer-0.12.3/mkmf.log
  
  extconf failed, exit code 1
  
  Gem files will remain installed in /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/therubyracer-0.12.3 for inspection.
  Results logged to /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/extensions/-darwin-20/2.5.0/therubyracer-0.12.3/gem_make.out
  
  
  ❯ gem install therubyracer -v '0.12.3' -- --with-v8-dir=/opt/homebrew/opt/v8/libexec/
  Building native extensions with: '--with-v8-dir=/opt/homebrew/opt/v8/libexec/'
  This could take a while...
  ERROR:  Error installing therubyracer:
      ERROR: Failed to build gem native extension.
  
      current directory: /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/therubyracer-0.12.3/ext/v8
  /Users/vaibhavgupta/.rvm/rubies/ruby-2.5.5/bin/ruby -I /Users/vaibhavgupta/.rvm/rubies/ruby-2.5.5/lib/ruby/site_ruby/2.5.0 -r ./siteconf20210120-6235-1hlxxtd.rb extconf.rb --with-v8-dir\=/opt/homebrew/opt/v8/libexec/
  checking for -lpthread... yes
  checking for -lobjc... yes
  checking for v8.h... no
  *** 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
      --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=/Users/vaibhavgupta/.rvm/rubies/ruby-2.5.5/bin/$(RUBY_BASE_NAME)
      --with-pthreadlib
      --without-pthreadlib
      --with-objclib
      --without-objclib
      --enable-debug
      --disable-debug
      --with-v8-dir
      --with-v8-include
      --without-v8-include=${v8-dir}/include
      --with-v8-lib
      --without-v8-lib=${v8-dir}/lib
  /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19/ext/libv8/location.rb:50:in `configure': By using --with-system-v8, you have chosen to use the version  (Libv8::Location::System::NotFoundError)
  of V8 found on your system and *not* the one that is bundled with
  the libv8 rubygem.
  
  However, your system version of v8 could not be located.
  
  Please make sure your system version of v8 that is compatible
  with 3.16.14.19 installed. You may need to use the
  --with-v8-dir option if it is installed in a non-standard location
      from /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19/lib/libv8.rb:7:in `configure_makefile'
      from extconf.rb:32:in `&lt;main&gt;'
  
  To see why this extension failed to compile, please check the mkmf.log which can be found here:
  
    /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/extensions/-darwin-20/2.5.0/therubyracer-0.12.3/mkmf.log
  
  extconf failed, exit code 1
  
  Gem files will remain installed in /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/therubyracer-0.12.3 for inspection.
  Results logged to /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/extensions/-darwin-20/2.5.0/therubyracer-0.12.3/gem_make.out
  </code></pre>