"rails new myapp"コマンドをbyebugで実行するとエラーメッセージが表示される

Question

"rails new newapp"というコマンドで私の端末から新しいRubyアプリケーションを作成すると、エラーメッセージが表示されます。 byeバグ9.0.5をインストールするとリンクが難しいようです。しばらくすると、端末はバンドルする前に成功できないと言っています。私はこれが私のアプリの正しい開発に大きな障壁と思う。誰も助けることができますか？

私は関連するターミナルステートメントを添付し、問題がどこにあるかを太字で強調しています。

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 11.2.2 
Using i18n 0.7.0 
Using json 1.8.3 
Using minitest 5.9.0 
Using thread_safe 0.3.5 
Using builder 3.2.2 
Using erubis 2.7.0 
Using mini_portile2 2.1.0 
Using pkg-config 1.1.7 
Using rack 1.6.4 
Using mime-types-data 3.2016.0521 
Using arel 6.0.3 
Using debug_inspector 0.0.2 
Using bundler 1.12.5 

Installing byebug 9.0.5 with native extensions 

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

    /Users/nicholaswenzel/.rbenv/versions/2.2.3/bin/ruby -r ./siteconf20160710-36604-3ys7vr.rb extconf.rb 
creating Makefile 

make "DESTDIR=" clean 
xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun 

make "DESTDIR=" 
xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun 

make failed, exit code 1 

Gem files will remain installed in /Users/nicholaswenzel/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/byebug-9.0.5 for inspection. 
Results logged to /Users/nicholaswenzel/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/extensions/x86_64-darwin-15/2.2.0-static/byebug-9.0.5/gem_make.out 
Using coffee-script-source 1.10.0 
Using execjs 2.7.0 
Using thor 0.19.1 
Using concurrent-ruby 1.0.2 
Using multi_json 1.12.1 
Using sass 3.4.22 
Using tilt 2.0.5 
Using spring 1.7.2 
Using sqlite3 1.3.11 
Using turbolinks-source 5.0.0 
Using rdoc 4.2.2 
Using tzinfo 1.2.2 
Installing nokogiri 1.6.8 with native extensions 

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

    /Users/nicholaswenzel/.rbenv/versions/2.2.3/bin/ruby -r ./siteconf20160710-36604-1ukclqg.rb extconf.rb 
Using pkg-config version 1.1.7 
checking if the C compiler accepts ... *** 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}/lib 
    --with-make-prog 
    --without-make-prog 
    --srcdir=. 
    --curdir 
    --ruby=/Users/nicholaswenzel/.rbenv/versions/2.2.3/bin/$(RUBY_BASE_NAME) 
    --help 
    --clean 
/Users/nicholaswenzel/.rbenv/versions/2.2.3/lib/ruby/2.2.0/mkmf.rb:456:in `try_do': The compiler failed to generate an executable file. (RuntimeError) 
You have to install development tools first. 
    from /Users/nicholaswenzel/.rbenv/versions/2.2.3/lib/ruby/2.2.0/mkmf.rb:571:in `block in try_compile' 
    from /Users/nicholaswenzel/.rbenv/versions/2.2.3/lib/ruby/2.2.0/mkmf.rb:522:in `with_werror' 
    from /Users/nicholaswenzel/.rbenv/versions/2.2.3/lib/ruby/2.2.0/mkmf.rb:571:in `try_compile' 
    from extconf.rb:138:in `nokogiri_try_compile' 
    from extconf.rb:162:in `block in add_cflags' 
    from /Users/nicholaswenzel/.rbenv/versions/2.2.3/lib/ruby/2.2.0/mkmf.rb:619:in `with_cflags' 
    from extconf.rb:161:in `add_cflags' 
    from extconf.rb:414:in `<main>' 

extconf failed, exit code 1 

Gem files will remain installed in /Users/nicholaswenzel/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/nokogiri-1.6.8 for inspection. 
Results logged to /Users/nicholaswenzel/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/extensions/x86_64-darwin-15/2.2.0-static/nokogiri-1.6.8/gem_make.out 
Using rack-test 0.6.3 
Using mime-types 3.1 
Using binding_of_caller 0.7.2 
An error occurred while installing byebug (9.0.5), and Bundler cannot continue. 
Make sure that `gem install byebug -v '9.0.5'` succeeds before bundling. 
     run bundle exec spring binstub --all 
* bin/rake: spring inserted 
* bin/rails: spring inserted 
Nicholass-MacBook-Pro:installmaster nicholaswenzel$ 

Answer 1

てみてください、

xcode-select --install 

・ホープ、このことができます。