Ruby-on-Rails. Problem with therubyracer (0.12.3) - ruby-on-rails

Question

I try to execute
bundle i
I get an error message:
An error occurred while installing therubyracer (0.12.3), and Bundler cannot continue.
Make sure that gem install therubyracer -v '0.12.3' succeeds before bundling.
I try:
$ gem uninstall libv8
$ gem install therubyracer
And:
gem list libv8 --remote --all
gem install libv8 -v 3.16.14.19 -- --with-system-v8
gem install therubyracer -- --with-v8-dir=/Users/MY_NAME/homebrew/opt/v8#3.15
Don't work.
I have result file gem_make.out:
current directory: /Users/MY_NAME/.rvm/gems/ruby-2.5.1/gems/therubyracer-0.12.3/ext/v8
/Users/MY_NAME/.rvm/rubies/ruby-2.5.1/bin/ruby -I /Users/MY_NAME/.rvm/rubies/ruby-
2.5.1/lib/ruby/site_ruby/2.5.0 -r ./siteconf20200814-13680-i9h23c.rb extconf.rb --with-v8-
dir\=/Users/MY_NAME/homebrew/opt/v8#3.15
checking for -lpthread... *** 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/MY_NAME/.rvm/rubies/ruby-2.5.1/bin/$(RUBY_BASE_NAME)
--with-pthreadlib
--without-pthreadlib
/Users/MY_NAME/.rvm/rubies/ruby-2.5.1/lib/ruby/2.5.0/mkmf.rb:456:in `try_do': The compiler failed to generate an executable file. (RuntimeError)
You have to install development tools first.
from /Users/MY_NAME/.rvm/rubies/ruby-2.5.1/lib/ruby/2.5.0/mkmf.rb:541:in `try_link0'
from /Users/MY_NAME/.rvm/rubies/ruby-2.5.1/lib/ruby/2.5.0/mkmf.rb:559:in `try_link'
from /Users/MY_NAME/.rvm/rubies/ruby-2.5.1/lib/ruby/2.5.0/mkmf.rb:777:in `try_func'
from /Users/MY_NAME/.rvm/rubies/ruby-2.5.1/lib/ruby/2.5.0/mkmf.rb:1004:in `block in have_library'
from /Users/MY_NAME/.rvm/rubies/ruby-2.5.1/lib/ruby/2.5.0/mkmf.rb:947:in `block in checking_for'
from /Users/MY_NAME/.rvm/rubies/ruby-2.5.1/lib/ruby/2.5.0/mkmf.rb:350:in `block (2 levels) in postpone'
from /Users/MY_NAME/.rvm/rubies/ruby-2.5.1/lib/ruby/2.5.0/mkmf.rb:320:in `open'
from /Users/MY_NAME/.rvm/rubies/ruby-2.5.1/lib/ruby/2.5.0/mkmf.rb:350:in `block in postpone'
from /Users/MY_NAME/.rvm/rubies/ruby-2.5.1/lib/ruby/2.5.0/mkmf.rb:320:in `open'
from /Users/MY_NAME/.rvm/rubies/ruby-2.5.1/lib/ruby/2.5.0/mkmf.rb:346:in `postpone'
from /Users/MY_NAME/.rvm/rubies/ruby-2.5.1/lib/ruby/2.5.0/mkmf.rb:946:in `checking_for'
from /Users/MY_NAME/.rvm/rubies/ruby-2.5.1/lib/ruby/2.5.0/mkmf.rb:999:in `have_library'
from extconf.rb:3:in `<main>'
To see why this extension failed to compile, please check the mkmf.log which can be found here:
/Users/MY_NAME/.rvm/gems/ruby-2.5.1/extensions/x86_64-darwin-17/2.5.0/therubyracer- 0.12.3/mkmf.log
extconf failed, exit code 1

Answer 1

It was helpful for me:
brew install ruby
brew upgrade ruby
xcode-select --install