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HTML Build a Blog with Jekyll and GitHub Pages Getting Started with Jekyll Installing Jekyll

Failed to build gem native extension

After running:

sudo gem install jekyll, I get this error message 
Building native extensions.  This could take a while...
ERROR:  Error installing jekyll:
    ERROR: Failed to build gem native extension.

    /usr/local/rvm/rubies/ruby-1.9.3-p392/bin/ruby -r ./siteconf20150608-4772-1rnpvna.rb extconf.rb
creating Makefile

make  clean

make
compiling porter.c
make: gcc-4.2: No such file or directory
make: *** [porter.o] Error 1

make failed, exit code 2

Gem files will remain installed in /usr/local/rvm/rubies/ruby-1.9.3-p392/lib/ruby/gems/1.9.1/gems/fast-stemmer-1.0.2 for inspection.
Results logged to /usr/local/rvm/rubies/ruby-1.9.3-p392/lib/ruby/gems/1.9.1/extensions/x86_64-darwin-10/1.9.1-static/fast-stemmer-1.0.2/gem_make.out
Kellie Kowalski
Kellie Kowalski
27,641 Points

I had the same issue. Ended up installing Xcode, and rerunning sudo gem install jekyll. It worked then.