[lpydawa@lpycomputer ~]$ rails new examples
create
create README.md
create Rakefile
create config.ru
create .gitignore
create Gemfile
create app
create app/assets/config/manifest.js
create app/assets/javascripts/application.js
create app/assets/javascripts/cable.js
create app/assets/stylesheets/application.css
create app/channels/application_cable/channel.rb
create app/channels/application_cable/connection.rb
create app/controllers/application_controller.rb
create app/helpers/application_helper.rb
create app/jobs/application_job.rb
create app/mailers/application_mailer.rb
create app/models/application_record.rb
create app/views/layouts/application.html.erb
create app/views/layouts/mailer.html.erb
create app/views/layouts/mailer.text.erb
create app/assets/images/.keep
create app/assets/javascripts/channels
create app/assets/javascripts/channels/.keep
create app/controllers/concerns/.keep
create app/models/concerns/.keep
create bin
create bin/bundle
create bin/rails
create bin/rake
create bin/setup
create bin/update
create config
create config/routes.rb
create config/application.rb
create config/environment.rb
create config/secrets.yml
create config/cable.yml
create config/puma.rb
create config/spring.rb
create config/environments
create config/environments/development.rb
create config/environments/production.rb
create config/environments/test.rb
create config/initializers
create config/initializers/application_controller_renderer.rb
create config/initializers/assets.rb
create config/initializers/backtrace_silencers.rb
create config/initializers/cookies_serializer.rb
create config/initializers/cors.rb
create config/initializers/filter_parameter_logging.rb
create config/initializers/inflections.rb
create config/initializers/mime_types.rb
create config/initializers/new_framework_defaults.rb
create config/initializers/session_store.rb
create config/initializers/wrap_parameters.rb
create config/locales
create config/locales/en.yml
create config/boot.rb
create config/database.yml
create db
create db/seeds.rb
create lib
create lib/tasks
create lib/tasks/.keep
create lib/assets
create lib/assets/.keep
create log
create log/.keep
create public
create public/404.html
create public/422.html
create public/500.html
create public/apple-touch-icon-precomposed.png
create public/apple-touch-icon.png
create public/favicon.ico
create public/robots.txt
create test/fixtures
create test/fixtures/.keep
create test/fixtures/files
create test/fixtures/files/.keep
create test/controllers
create test/controllers/.keep
create test/mailers
create test/mailers/.keep
create test/models
create test/models/.keep
create test/helpers
create test/helpers/.keep
create test/integration
create test/integration/.keep
create test/test_helper.rb
create tmp
create tmp/.keep
create tmp/cache
create tmp/cache/assets
create vendor/assets/javascripts
create vendor/assets/javascripts/.keep
create vendor/assets/stylesheets
create vendor/assets/stylesheets/.keep
remove config/initializers/cors.rb
run bundle install
Fetching gem metadata from https://rubygems.org/...........
Fetching version metadata from https://rubygems.org/...
Fetching dependency metadata from https://rubygems.org/..
Resolving dependencies...
Using rake 12.3.0
Using concurrent-ruby 1.0.5
Using minitest 5.11.1
Using thread_safe 0.3.6
Using builder 3.2.3
Using erubis 2.7.0
Using nokogiri 1.8.1
Using crass 1.0.3
Using rack 2.0.3
Installing nio4r 2.2.0 with native extensions
Using websocket-extensions 0.1.3
Using mini_mime 1.0.0
Using arel 7.1.4
Installing bindex 0.5.0 with native extensions
Using bundler 1.13.7
Using byebug 9.1.0
Using coffee-script-source 1.12.2
Using execjs 2.7.0
Using method_source 0.9.0
Using thor 0.20.0
Using ffi 1.9.18
Using multi_json 1.13.1
Installing puma 3.11.0 with native extensions
Using rb-fsevent 0.10.2
Using tilt 2.0.8
Using sqlite3 1.3.13
Using turbolinks-source 5.1.0
Using i18n 0.9.1
Using tzinfo 1.2.4
Using loofah 2.1.1
Using rack-test 0.6.3
Using sprockets 3.7.1
然后错误开始出现......
Gem::Ext::BuildError: ERROR: Failed to build gem native extension.
current directory: /home/lpydawa/.gem/ruby/2.4.0/gems/nio4r-2.2.0/ext/nio4r
/usr/bin/ruby -r ./siteconf20180113-10851-hcvjqz.rb extconf.rb
checking for unistd.h... *** 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
--without-opt-dir
--with-opt-include
--without-opt-include=${opt-dir}/include
--with-opt-lib
--without-opt-lib=${opt-dir}/lib64
--with-make-prog
--without-make-prog
--srcdir=.
--curdir
--ruby=/usr/bin/$(RUBY_BASE_NAME)
/usr/share/ruby/mkmf.rb:457:in `try_do': The compiler failed to generate an
executable file. (RuntimeError)
You have to install development tools first.
from /usr/share/ruby/mkmf.rb:588:in `try_cpp'
from /usr/share/ruby/mkmf.rb:1095:in `block in have_header'
from /usr/share/ruby/mkmf.rb:945:in `block in checking_for'
from /usr/share/ruby/mkmf.rb:351:in `block (2 levels) in postpone'
from /usr/share/ruby/mkmf.rb:321:in `open'
from /usr/share/ruby/mkmf.rb:351:in `block in postpone'
from /usr/share/ruby/mkmf.rb:321:in `open'
from /usr/share/ruby/mkmf.rb:347:in `postpone'
from /usr/share/ruby/mkmf.rb:944:in `checking_for'
from /usr/share/ruby/mkmf.rb:1094:in `have_header'
from extconf.rb:14:in `<main>'
To see why this extension failed to compile, please check the mkmf.log which
can be found here:
/home/lpydawa/.gem/ruby/2.4.0/extensions/x86_64-linux/2.4.0/nio4r-2.2.0/mkmf.log
extconf failed, exit code 1
Gem files will remain installed in
/home/lpydawa/.gem/ruby/2.4.0/gems/nio4r-2.2.0 for inspection.
Results logged to
/home/lpydawa/.gem/ruby/2.4.0/extensions/x86_64-linux/2.4.0/nio4r-2.2.0/gem_make.out
An error occurred while installing nio4r (2.2.0), and Bundler cannot
continue.
Make sure that `gem install nio4r -v '2.2.0'` succeeds before bundling.
run bundle exec spring binstub --all
Could not find gem 'sass-rails (~> 5.0)' in any of the gem sources listed in your Gemfile or available on this machine.
Run `bundle install` to install missing gems.
答案 0 :(得分：1)
您可以尝试以下方法：
dnf install rpm-build
然后将目录更改为Rails项目并运行
bundle install