qiita-markdownのインストール方法 ref: http://qiita.com/jacoyutorius/items/9692434a9afe88a46e80

file0.txt

gem "qiita-markdown"

file1.txt

bundle install --path .bundle

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

    /Users/yuto-ogi/.rbenv/versions/2.1.2/bin/ruby extconf.rb
checking for main() in -licui18n... no
checking for main() in -licui18n... no


***************************************************************************************
*********** icu required (brew install icu4c or apt-get install libicu-dev) ***********
***************************************************************************************
*** 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.

~(中略)~

extconf failed, exit code 1

Gem files will remain installed in /Users/yuto-ogi/Work/rails/tips/.bundle/ruby/2.1.0/gems/charlock_holmes-0.7.3 for inspection.
Results logged to /Users/yuto-ogi/Work/rails/tips/.bundle/ruby/2.1.0/extensions/x86_64-darwin-13/2.1.0-static/charlock_holmes-0.7.3/gem_make.out
An error occurred while installing charlock_holmes (0.7.3), and Bundler cannot continue.
Make sure that `gem install charlock_holmes -v '0.7.3'` succeeds before bundling.

file2.txt

brew install icu4c
==> Downloading https://downloads.sf.net/project/machomebrew/Bottles/icu4c-54.1.yosemite
######################################################################## 100.0%
==> Pouring icu4c-54.1.yosemite.bottle.1.tar.gz
==> Caveats
This formula is keg-only, which means it was not symlinked into /usr/local.

Mac OS X already provides this software and installing another version in
parallel can cause all kinds of trouble.

OS X provides libicucore.dylib (but nothing else).

Generally there are no consequences of this for you. If you build your
own software and it requires this formula, you'll need to add to your
build variables:

    LDFLAGS:  -L/usr/local/opt/icu4c/lib
    CPPFLAGS: -I/usr/local/opt/icu4c/include

==> Summary
🍺  /usr/local/Cellar/icu4c/54.1: 242 files, 65M

file3.txt

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

    /Users/yuto-ogi/.rbenv/versions/2.1.2/bin/ruby extconf.rb
checking for gmake... no
checking for make... yes
checking for cmake... no
ERROR: CMake is required to build Rugged.
*** 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.

~(中略)~

extconf failed, exit code 1

Gem files will remain installed in /Users/yuto-ogi/Work/rails/tips/.bundle/ruby/2.1.0/gems/rugged-0.22.0b4 for inspection.
Results logged to /Users/yuto-ogi/Work/rails/tips/.bundle/ruby/2.1.0/extensions/x86_64-darwin-13/2.1.0-static/rugged-0.22.0b4/gem_make.out
An error occurred while installing rugged (0.22.0b4), and Bundler cannot continue.
Make sure that `gem install rugged -v '0.22.0b4'` succeeds before bundling.

file4.txt

brew install cmake
==> Downloading https://downloads.sf.net/project/machomebrew/Bottles/cmake-3.0.2.yosemit
######################################################################## 100.0%
==> Pouring cmake-3.0.2.yosemite.bottle.tar.gz
Error: The `brew link` step did not complete successfully
The formula built, but is not symlinked into /usr/local
Could not symlink share/man/man7/cmake-buildsystem.7
/usr/local/share/man/man7 is not writable.

You can try again using:
  brew link cmake
==> Summary
🍺  /usr/local/Cellar/cmake/3.0.2: 1641 files, 26M

file5.txt

brew link cmake
Linking /usr/local/Cellar/cmake/3.0.2...
Error: Could not symlink share/man/man7/cmake-buildsystem.7
/usr/local/share/man/man7 is not writable.```

file6.txt

cd /usr/local/share/man
sudo chown -R $USER man7

file7.txt

brew link --force cmake
Linking /usr/local/Cellar/cmake/3.0.2... 26 symlinks created

file8.txt

bundle install --path .bundle