Package Error in OS X

Question

This is an error log when I use bundle install.

I want to build a blog on Github, so use Octopress, but it was unsuccessful. If you have another method, please tell me, thanks.

Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.

/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby extconf.rb 
checking for main() in -lc... yes
creating Makefile

make "DESTDIR="
make: *** No rule to make target `"/Applications/Xcode', needed by `redcloth_attributes.o'.  Stop.


Gem files will remain installed in /var/folders/zb/bxbkz6pd5fscs29zq2hk1b4h0000gn/T/bundler20141230-81071-q2p8fv/RedCloth-4.2.9/gems/RedCloth-4.2.9 for inspection.
Results logged to /var/folders/zb/bxbkz6pd5fscs29zq2hk1b4h0000gn/T/bundler20141230-81071-q2p8fv/RedCloth-4.2.9/gems/RedCloth-4.2.9/ext/redcloth_scan/gem_make.out
An error occurred while installing RedCloth (4.2.9), and Bundler cannot
continue.
Make sure that `gem install RedCloth -v '4.2.9'` succeeds before bundling.

Answer 1

It looks like the xcode command line tools are not installed on your Mac. Try this in the terminal, then try again:

xcode-select --install

You must also accept the license agreement. I think he will automatically ask you.