mac安装CocoaPods遇到的问题及解决办法

（1）sudo gem install cocoapods

Fetching: i18n-0.7.0.gem (100%)

Successfully installed i18n-0.7.0

Fetching: thread_safe-0.3.5.gem (100%)

Successfully installed thread_safe-0.3.5

Fetching: tzinfo-1.2.2.gem (100%)

Successfully installed tzinfo-1.2.2

Fetching: minitest-5.9.0.gem (100%)

Successfully installed minitest-5.9.0

Fetching: concurrent-ruby-1.0.2.gem (100%)

Successfully installed concurrent-ruby-1.0.2

Fetching: activesupport-5.0.0.gem (100%)

ERROR:  Error installing cocoapods:

activesupport requires Ruby version >= 2.2.2.

//ruby的版本号过低

（2）ruby -v

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

//的确是版本号太低了

（3）curl -L get.rvm.io | bash -s stable

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

Dload  Upload   Total   Spent    Left  Speed

100   184  100   184    0     0    206      0 --:--:-- --:--:-- --:--:--   209

100 22865  100 22865    0     0  11431      0  0:00:02  0:00:02 --:--:--  187k

Downloading https://github.com/rvm/rvm/archive/1.27.0.tar.gz

Downloading https://github.com/rvm/rvm/releases/download/1.27.0/1.27.0.tar.gz.asc

Found PGP signature at: 'https://github.com/rvm/rvm/releases/download/1.27.0/1.27.0.tar.gz.asc',

but no GPG software exists to validate it, skipping.

Installing RVM to /Users/zzh/.rvm/

Adding rvm PATH line to /Users/baidu/.profile /Users/baidu/.mkshrc /Users/baidu/.bashrc /Users/baidu/.zshrc.

Adding rvm loading line to /Users/baidu/.profile /Users/baidu/.bash_profile /Users/baidu/.zlogin.

Installation of RVM in /Users/zzh/.rvm/ is almost complete:

* To start using RVM you need to run `source /Users/baidu/.rvm/scripts/rvm`

in all your open shell windows, in rare cases you need to reopen all shell windows.

# zzz,

#

#   Thank you for using RVM!

#   We sincerely hope that RVM helps to make your life easier and more enjoyable!!!

#

# ~Wayne, Michal & team.

In case of problems: https://rvm.io/help and https://twitter.com/rvm_io

 

（4）接着执行以下三条命令：

zzh:~ zzh$ source ~/.bashrc

zzh:~ zzh$ source ~/.bash_profile

zzh~ zzh$ rvm -v

rvm 1.27.0 (latest) by Wayne E. Seguin , Michal Papis [https://rvm.io/]

zzh:~ zzh$ ruby -v

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

（5）开始用rvm安装ruby

zzh:~ zzh$ 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[.8]

[ruby-]2.2[.4]

[ruby-]2.3[.0]

[ruby-]2.2-head

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[.23]

jruby[-9.0.5.0]

jruby-head

# Rubinius

rbx-1[.4.3]

rbx-2.3[.0]

rbx-2.4[.1]

rbx[-2.5.8]

rbx-head

# Opal

opal

# Minimalistic ruby implementation - ISO 30170:2012

mruby[-head]

# Ruby Enterprise Edition

ree-1.8.6

ree[-1.8.7][-2012.02]

# GoRuby

goruby

# 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

（6）选择一个版本号开始安装，选最新的2.3

zzh:~ zzh$ rvm install 2.3

Searching for binary rubies, this might take some time.

No binary rubies available for: osx/10.11/x86_64/ruby-2.3.0.

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

Checking requirements for osx.

Installing requirements for osx.

Updating system.......

Error running 'requirements_osx_brew_update_system ruby-2.3.0',

showing last 15 lines of /Users/baidu/.rvm/log/1470726560_ruby-2.3.0/update_system.log

https://github.com/Homebrew/homebrew/wiki/Common-Issues

and make sure `brew update` works before continuing.'

++ rvm_pretty_print stderr

++ case "${rvm_pretty_print_flag:=auto}" in

++ case "${TERM:-dumb}" in

++ case "$1" in

++ [[ -t 2 ]]

++ return 1

++ printf %b 'Failed to update Homebrew, follow instructions here:

https://github.com/Homebrew/homebrew/wiki/Common-Issues

and make sure `brew update` works before continuing.\n'

Failed to update Homebrew, follow instructions here:

https://github.com/Homebrew/homebrew/wiki/Common-Issues

and make sure `brew update` works before continuing.

++ return 1

Requirements installation failed with status: 1.

//结果出错了，打开/Users/baidu/.rvm/log/1470726560_ruby-2.3.0/update_system.log文件，好像是brew没有升级

（7）升级brew

zhangzhihui:~ baidu$ brew update

To restore the stashed changes to /usr/local/Library/Taps/homebrew/homebrew-core run:

'cd /usr/local/Library/Taps/homebrew/homebrew-core && git stash pop'

Updated 1 tap (homebrew/core).

==> New Formulae

alot              convox            genext2fs         hyper             libvterm          mimetic          osc               presto            tbox              wireguard-tools

b2sum             digdag            git-remote-hg     lego              livestreamer      minio            osm-gps-map       rancher-cli       todolist

==> Updated Formulae

abcm2ps                       dateutils                     glibmm                        libdap                       ntl                           scour

abduco                        datomic                       glide                         libdrawtext                  ntopng                        sdb

abi-compliance-checker        davmail                       glyr                          libebml                      nuxeo                         sec

==> Renamed Formulae

commonmark -> cmark

==> Deleted Formulae

avidemux              gimp                  kdiff3                luyten                osxfuse              shrewsoft-vpn-client  swatchbooker

（8）再次安装ruby 2.3

zzh:~ zzh$ rvm install 2.3

Searching for binary rubies, this might take some time.

No binary rubies available for: osx/10.11/x86_64/ruby-2.3.0.

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

Checking requirements for osx.

Installing requirements for osx.

Updating system.....

Installing required packages: automake...

Error running 'requirements_osx_brew_libs_install automake',

showing last 15 lines of /Users/zzh/.rvm/log/1470726877_ruby-2.3.0/package_install_automake.log

++ case "$1" in

++ [[ -t 1 ]]

++ return 1

++ printf %b 'There were package installation errors, make sure to read the log.

Try `brew tap --repair` and make sure `brew doctor` looks reasonable.

Check Homebrew requirements https://github.com/Homebrew/homebrew/wiki/Installation\n'

There were package installation errors, make sure to read the log.

Try `brew tap --repair` and make sure `brew doctor` looks reasonable.

Check Homebrew requirements https://github.com/Homebrew/homebrew/wiki/Installation

++ case "$_system_version" in

++ return 1

Requirements installation failed with status: 1.

//还是有问题

（9）打开/Users/zzh/.rvm/log/1470726877_ruby-2.3.0/package_install_automake.log文件，发现是automake和autoconf虽然安装了，但是没有链接上。如下面所示：

zzh:~ zzh$ brew install autoconf

Warning: autoconf-2.69 already installed, it's just not linked

zzh:~ zzh$ brew install automake

Warning: automake-1.15 already installed, it's just not linked

//只是没有连接，只要重新链接就可以了，如下：

zzh:~ zzh$ brew link --overwrite autoconf

Linking /usr/local/Cellar/autoconf/2.69... 60 symlinks created

Warning: autoconf-2.69 already installed

zzh:~ zzh$ brew link --overwrite automake

Linking /usr/local/Cellar/automake/1.15... 124 symlinks created

（10）重新安装ruby 2.3

zzh:~ zzh$ rvm install 2.3

Searching for binary rubies, this might take some time.

No binary rubies available for: osx/10.11/x86_64/ruby-2.3.0.

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

Checking requirements for osx.

==> Upgrading 1 outdated package, with result:

pkg-config 0.29.1_1

==> Upgrading pkg-config

==> Downloading https://homebrew.bintray.com/bottles/pkg-config-0.29.1_1.el_capitan.bottle.tar.gz

######################################################################## 100.0%

==> Pouring pkg-config-0.29.1_1.el_capitan.bottle.tar.gz