Installazione di 'Compass' tramite la riga di comando, ricezione errore "extconf fallito, uscita codice 1"

Question

Impossibile trovare una risposta a questo. con OS X Yosemite Beta v2

Quando si segue la bussola guida all'installazione assicurarsi che il gioiello è up-to-date

gem update --system 

Poi gestita

gem install compass 

Answer 1

Supponendo che l'installazione non riuscita per la stessa ragione come il mio, noterai che l'errore registra gli stati:

"You have to install development tools first." 

, installare Xcode e provare:

xcode-select --install 

Seguire le istruzioni sullo schermo e si dovrebbe essere d'oro. Per avere un riferimento, questo è l'errore che ho ricevuto quando si tenta

Computer:Folder User$ sudo gem install compass 

Building native extensions. This could take a while... 
ERROR: Error installing compass: 
    ERROR: Failed to build gem native extension. 

    /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby -r ./siteconf20140904-3376-i1l5f8.rb extconf.rb 
checking for ffi.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}/lib 
    --with-make-prog 
    --without-make-prog 
    --srcdir=. 
    --curdir 
    --ruby=/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby 
    --with-ffi_c-dir 
    --without-ffi_c-dir 
    --with-ffi_c-include 
    --without-ffi_c-include=${ffi_c-dir}/include 
    --with-ffi_c-lib 
    --without-ffi_c-lib=${ffi_c-dir}/ 
    --with-libffi-config 
    --without-libffi-config 
    --with-pkg-config 
    --without-pkg-config 
/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/mkmf.rb:434:in `try_do': The compiler failed to generate an executable file. (RuntimeError) 
You have to install development tools first. 
    from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/mkmf.rb:549:in `block in try_compile' 
    from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/mkmf.rb:502:in `with_werror' 
    from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/mkmf.rb:549:in `try_compile' 
    from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/mkmf.rb:1044:in `block in have_header' 
    from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/mkmf.rb:895:in `block in checking_for' 
    from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/mkmf.rb:340:in `block (2 levels) in postpone' 
    from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/mkmf.rb:310:in `open' 
    from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/mkmf.rb:340:in `block in postpone' 
    from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/mkmf.rb:310:in `open' 
    from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/mkmf.rb:336:in `postpone' 
    from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/mkmf.rb:894:in `checking_for' 
    from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/mkmf.rb:1043:in `have_header' 
    from extconf.rb:16:in `<main>' 

extconf failed, exit code 1 

Gem files will remain installed in /Library/Ruby/Gems/2.0.0/gems/ffi-1.9.3 for inspection. 
Results logged to /Library/Ruby/Gems/2.0.0/extensions/universal-darwin-14/2.0.0/ffi-1.9.3/gem_make.out 

Answer 2

Se avete XCODE installato, è necessario aprire. Perché il sistema operativo deve aggiungere componenti e questi vengono aggiunti all'apertura dell'app.

Riprova gestita

sudo gem install compass

Enjoy!

Answer 3

Ha lo stesso problema, utilizzato anche xcode-select --install ma non è di aiuto. Devo scaricare corretta dmg da qui https://developer.apple.com/downloads/?name=for%20Xcode