今天安装jazzy的时候碰到一点问题，记录下来，希望对大家能够有点帮助

本人的操作系统是OS X EI Capitan，os 10.11.6

按照jazzy的开发指南，在终端输入：

sudo gem install jazzy

结果产生如下的错误

Building native extensions.  This could take a while...

ERROR:  Error installing jazzy:

ERROR: Failed to build gem native extension.

current directory: /Library/Ruby/Gems/2.0.0/gems/redcarpet-3.4.0/ext/redcarpet

/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby -r ./siteconf20170704-430-1vx4mno.rb extconf.rb

creating Makefile

current directory: /Library/Ruby/Gems/2.0.0/gems/redcarpet-3.4.0/ext/redcarpet

make "DESTDIR=" clean

current directory: /Library/Ruby/Gems/2.0.0/gems/redcarpet-3.4.0/ext/redcarpet

make "DESTDIR="

make: *** No rule to make target `/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0/universal-darwin15/ruby/config.h', needed by `autolink.o'.  Stop.

make failed, exit code 2

Gem files will remain installed in /Library/Ruby/Gems/2.0.0/gems/redcarpet-3.4.0 for inspection.

Results logged to /Library/Ruby/Gems/2.0.0/extensions/universal-darwin-15/2.0.0/redcarpet-3.4.0/gem_make.out

按照错误的提示，应该是我的ruby管理包版本比较旧，那么就开始升级吧

要升级ruby，需要安装rvm

showxjndeMacBook-Air:Applications showxjn$ ruby -v

ruby 2.0.0p648 (2015-12-16 revision 53162) [universal.x86_64-darwin15]

showxjndeMacBook-Air:Applications showxjn$ rvm -v

-bash: rvm: command not found

showxjndeMacBook-Air:Applications showxjn$ curl -L get.rvm.io | bash -s stable

上述命令依次是查询ruby版本，查询rvm版本，安装rvm

安装好了之后

showxjndeMacBook-Air:Applications showxjn$ source ~/.bashrc

showxjndeMacBook-Air:Applications showxjn$ source ~/.bash_profile

showxjndeMacBook-Air:Applications showxjn$ rvm -v

rvm 1.29.2 (latest) by Michal Papis, Piotr Kuczynski, Wayne E. Seguin [https://rvm.io/]

更改下路径，rvm安装成功了，接下来，更新ruby

showxjndeMacBook-Air:Applications showxjn$ rvm list known

# MRI Rubies[ruby-]1.8.6[-p420][ruby-]1.8.7[-head] # security released on head[ruby-]1.9.1[-p431][ruby-]1.9.2[-p330][ruby-]1.9.3[-p551][ruby-]2.0.0[-p648][ruby-]2.1[.10][ruby-]2.2[.6][ruby-]2.3[.3][ruby-]2.4[.0]ruby-head# for forks use: rvm install ruby-head---url https://github.com/github/ruby.git --branch 2.2

# JRuby

jruby-1.6[.8]

jruby-1.7[.26]

jruby[-9.1.7.0]

jruby-head

# Rubinius

rbx-1[.4.3]

rbx-2.3[.0]

rbx-2.4[.1]

rbx-2[.5.8]

rbx[-3.71]

rbx-head

# Opal

opal

# Minimalistic ruby implementation - ISO 30170:2012

mruby-1.0.0

mruby-1.1.0

mruby-1[.2.0]

mruby[-head]

# Ruby Enterprise Edition

ree-1.8.6

ree[-1.8.7][-2012.02]

# Topaz

topaz

# MagLev

maglev[-head]

maglev-1.0.0

# Mac OS X Snow Leopard Or Newer

macruby-0.10

macruby-0.11

macruby[-0.12]

macruby-nightly

macruby-head

# IronRuby

ironruby[-1.1.3]

ironruby-head

列出可用的安装包和版本

showxjndeMacBook-Air:Applications showxjn$ xcode-select --install

xcode-select: note: install requested for command line developer tools

showxjndeMacBook-Air:Applications showxjn$ rvm install 2.4

ruby-2.4.0 - #removing src/ruby-2.4.0..

Searching for binary rubies, this might take some time.

No binary rubies available for: osx/10.11/x86_64/ruby-2.4.0.

Continuing with compilation. Please read 'rvm help mount' to get more information on binary rubies.

Checking requirements for osx.

Certificates in '/usr/local/etc/openssl@1.1/cert.pem' are already up to date.

Requirements installation successful.

Installing Ruby from source to: /Users/showxjn/.rvm/rubies/ruby-2.4.0, this may take a while depending on your cpu(s)...

ruby-2.4.0 - #downloading ruby-2.4.0, this may take a while depending on your connection...

ruby-2.4.0 - #extracting ruby-2.4.0 to /Users/showxjn/.rvm/src/ruby-2.4.0....

ruby-2.4.0 - #configuring...................................................................

ruby-2.4.0 - #post-configuration.

ruby-2.4.0 - #compiling.............................................................

ruby-2.4.0 - #installing.......

ruby-2.4.0 - #making binaries executable..

ruby-2.4.0 - #downloading rubygems-2.6.12

% Total    % Received % Xferd  Average Speed  Time    Time    Time  Current

Dload  Upload  Total  Spent    Left  Speed

100  749k  100  749k    0    0  35211      0  0:00:21  0:00:21 --:--:-- 40146

No checksum for downloaded archive, recording checksum in user configuration.

ruby-2.4.0 - #extracting rubygems-2.6.12....

ruby-2.4.0 - #removing old rubygems.........

ruby-2.4.0 - #installing rubygems-2.6.12.........................

ruby-2.4.0 - #gemset created /Users/showxjn/.rvm/gems/ruby-2.4.0@global

ruby-2.4.0 - #importing gemset /Users/showxjn/.rvm/gemsets/global.gems..............................................|

ruby-2.4.0 - #generating global wrappers........

ruby-2.4.0 - #gemset created /Users/showxjn/.rvm/gems/ruby-2.4.0

ruby-2.4.0 - #importing gemsetfile /Users/showxjn/.rvm/gemsets/default.gems evaluated to empty gem list

ruby-2.4.0 - #generating default wrappers........

ruby-2.4.0 - #adjusting #shebangs for (gem irb erb ri rdoc testrb rake).

Install of ruby-2.4.0 - #complete

Ruby was built without documentation, to build it run: rvm docs generate-ri

接下来就是更新ruby，更新成功后就可以安装jazzy

showxjndeMacBook-Air:Applications showxjn$ sudo gem install jazzy

Password:

Fetching: liferaft-0.0.6.gem (100%)

Successfully installed liferaft-0.0.6

Fetching: xcinvoke-0.3.0.gem (100%)

Successfully installed xcinvoke-0.3.0

Fetching: sqlite3-1.3.13.gem (100%)

Building native extensions.  This could take a while...

Successfully installed sqlite3-1.3.13

Fetching: sass-3.4.24.gem (100%)

Successfully installed sass-3.4.24

Fetching: rouge-1.11.1.gem (100%)

Successfully installed rouge-1.11.1

Fetching: redcarpet-3.4.0.gem (100%)

Building native extensions.  This could take a while...

Successfully installed redcarpet-3.4.0

Fetching: open4-1.3.4.gem (100%)

Successfully installed open4-1.3.4

Fetching: mustache-0.99.8.gem (100%)

Successfully installed mustache-0.99.8

Fetching: nanaimo-0.2.3.gem (100%)

Successfully installed nanaimo-0.2.3

Fetching: colored2-3.1.2.gem (100%)

Successfully installed colored2-3.1.2

Fetching: claide-1.0.2.gem (100%)

Successfully installed claide-1.0.2

Fetching: CFPropertyList-2.3.5.gem (100%)

Successfully installed CFPropertyList-2.3.5

Fetching: xcodeproj-1.5.0.gem (100%)

Successfully installed xcodeproj-1.5.0

Fetching: ruby-macho-1.1.0.gem (100%)

Successfully installed ruby-macho-1.1.0

Fetching: nap-1.1.0.gem (100%)

Successfully installed nap-1.1.0

Fetching: molinillo-0.5.7.gem (100%)

Successfully installed molinillo-0.5.7

Fetching: gh_inspector-1.0.3.gem (100%)

Successfully installed gh_inspector-1.0.3

Fetching: fourflusher-2.0.1.gem (100%)

Successfully installed fourflusher-2.0.1

Fetching: escape-0.0.4.gem (100%)

Successfully installed escape-0.0.4

Fetching: cocoapods-try-1.1.0.gem (100%)

Successfully installed cocoapods-try-1.1.0

Fetching: netrc-0.7.8.gem (100%)

Successfully installed netrc-0.7.8

Fetching: cocoapods-trunk-1.2.0.gem (100%)

Successfully installed cocoapods-trunk-1.2.0

Fetching: cocoapods-stats-1.0.0.gem (100%)

Successfully installed cocoapods-stats-1.0.0

Fetching: cocoapods-search-1.0.0.gem (100%)

Successfully installed cocoapods-search-1.0.0

Fetching: cocoapods-plugins-1.0.0.gem (100%)

Successfully installed cocoapods-plugins-1.0.0

Fetching: cocoapods-downloader-1.1.3.gem (100%)

Successfully installed cocoapods-downloader-1.1.3

Fetching: cocoapods-deintegrate-1.0.1.gem (100%)

Successfully installed cocoapods-deintegrate-1.0.1

Fetching: fuzzy_match-2.0.4.gem (100%)

Successfully installed fuzzy_match-2.0.4

Fetching: thread_safe-0.3.6.gem (100%)

Successfully installed thread_safe-0.3.6

Fetching: tzinfo-1.2.3.gem (100%)

Successfully installed tzinfo-1.2.3

Fetching: i18n-0.8.4.gem (100%)

Successfully installed i18n-0.8.4

Fetching: activesupport-4.2.9.gem (100%)

Successfully installed activesupport-4.2.9

Fetching: cocoapods-core-1.2.1.gem (100%)

Successfully installed cocoapods-core-1.2.1

Fetching: cocoapods-1.2.1.gem (100%)

Successfully installed cocoapods-1.2.1

Fetching: jazzy-0.8.2.gem (100%)

Successfully installed jazzy-0.8.2

Parsing documentation for liferaft-0.0.6

Installing ri documentation for liferaft-0.0.6

Parsing documentation for xcinvoke-0.3.0

Installing ri documentation for xcinvoke-0.3.0

Parsing documentation for sqlite3-1.3.13

Installing ri documentation for sqlite3-1.3.13

Parsing documentation for sass-3.4.24

Installing ri documentation for sass-3.4.24

Parsing documentation for rouge-1.11.1

Installing ri documentation for rouge-1.11.1

Parsing documentation for redcarpet-3.4.0

Installing ri documentation for redcarpet-3.4.0

Parsing documentation for open4-1.3.4

Installing ri documentation for open4-1.3.4

Parsing documentation for mustache-0.99.8

Installing ri documentation for mustache-0.99.8

Parsing documentation for nanaimo-0.2.3

Installing ri documentation for nanaimo-0.2.3

Parsing documentation for colored2-3.1.2

Installing ri documentation for colored2-3.1.2

Parsing documentation for claide-1.0.2

Installing ri documentation for claide-1.0.2

Parsing documentation for CFPropertyList-2.3.5

Installing ri documentation for CFPropertyList-2.3.5

Parsing documentation for xcodeproj-1.5.0

Installing ri documentation for xcodeproj-1.5.0

Parsing documentation for ruby-macho-1.1.0

Installing ri documentation for ruby-macho-1.1.0

Parsing documentation for nap-1.1.0

Installing ri documentation for nap-1.1.0

Parsing documentation for molinillo-0.5.7

Installing ri documentation for molinillo-0.5.7

Parsing documentation for gh_inspector-1.0.3

Installing ri documentation for gh_inspector-1.0.3

Parsing documentation for fourflusher-2.0.1

Installing ri documentation for fourflusher-2.0.1

Parsing documentation for escape-0.0.4

Installing ri documentation for escape-0.0.4

Parsing documentation for cocoapods-try-1.1.0

Installing ri documentation for cocoapods-try-1.1.0

Parsing documentation for netrc-0.7.8

Installing ri documentation for netrc-0.7.8

Parsing documentation for cocoapods-trunk-1.2.0

Installing ri documentation for cocoapods-trunk-1.2.0

Parsing documentation for cocoapods-stats-1.0.0

Installing ri documentation for cocoapods-stats-1.0.0

Parsing documentation for cocoapods-search-1.0.0

Installing ri documentation for cocoapods-search-1.0.0

Parsing documentation for cocoapods-plugins-1.0.0

Installing ri documentation for cocoapods-plugins-1.0.0

Parsing documentation for cocoapods-downloader-1.1.3

Installing ri documentation for cocoapods-downloader-1.1.3

Parsing documentation for cocoapods-deintegrate-1.0.1

Installing ri documentation for cocoapods-deintegrate-1.0.1

Parsing documentation for fuzzy_match-2.0.4

Installing ri documentation for fuzzy_match-2.0.4

Parsing documentation for thread_safe-0.3.6

Installing ri documentation for thread_safe-0.3.6

Parsing documentation for tzinfo-1.2.3

Installing ri documentation for tzinfo-1.2.3

Parsing documentation for i18n-0.8.4

Installing ri documentation for i18n-0.8.4

Parsing documentation for activesupport-4.2.9

Installing ri documentation for activesupport-4.2.9

Parsing documentation for cocoapods-core-1.2.1

Installing ri documentation for cocoapods-core-1.2.1

Parsing documentation for cocoapods-1.2.1

Installing ri documentation for cocoapods-1.2.1

Parsing documentation for jazzy-0.8.2

Installing ri documentation for jazzy-0.8.2

Done installing documentation for liferaft, xcinvoke, sqlite3, sass, rouge, redcarpet, open4, mustache, nanaimo, colored2, claide, CFPropertyList, xcodeproj, ruby-macho, nap, molinillo, gh_inspector, fourflusher, escape, cocoapods-try, netrc, cocoapods-trunk, cocoapods-stats, cocoapods-search, cocoapods-plugins, cocoapods-downloader, cocoapods-deintegrate, fuzzy_match, thread_safe, tzinfo, i18n, activesupport, cocoapods-core, cocoapods, jazzy after 30 seconds

35 gems installed

好了，安装成功了