無法在MAMP上安裝mysql2 Gem

Question

運行軟件包安裝后，出現此錯誤。 我試過編輯/ etc / paths文件，但仍然沒有用。

Gem :: Ext :: BuildError：錯誤：無法構建gem原生擴展。

/Users/adam/.rvm/rubies/ruby-2.1.5/bin/ruby -r ./siteconf20150224-4249-ltvvu1.rb extconf.rb 
checking for ruby/thread.h... yes
checking for rb_thread_call_without_gvl() in ruby/thread.h... yes
checking for rb_thread_blocking_region()... yes
checking for rb_wait_for_single_fd()... yes
checking for rb_hash_dup()... yes
checking for rb_intern3()... yes
-----
Using mysql_config at /Applications/MAMP/Library/bin/mysql_config
-----
checking for mysql.h... no
checking for mysql/mysql.h... yes
checking for errmsg.h... no
-----
errmsg.h is missing.  please check your installation of mysql and try again.
-----
*** 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.

Provided configuration options:
    --with-opt-dir
    --without-opt-dir
    --with-opt-include
    --without-opt-include=${opt-dir}/include
    --with-opt-lib
    --without-opt-lib=${opt-dir}/lib
    --with-make-prog
    --without-make-prog
    --srcdir=.
    --curdir
    --ruby=/Users/adam/.rvm/rubies/ruby-2.1.5/bin/ruby
    --with-mysql-dir
    --without-mysql-dir
    --with-mysql-include
    --without-mysql-include=${mysql-dir}/include
    --with-mysql-lib
    --without-mysql-lib=${mysql-dir}/lib
    --with-mysql-config
    --without-mysql-config

extconf failed, exit code 1

的Gemfile

ruby-2.1.5
gem 'rails', '4.1.7'
gem 'mysql2'

的/ etc /路徑

/Applications/MAMP/Library/bin
/usr/local/bin
/usr/bin
/bin
/usr/sbin
/sbin

這與MySql安裝有關嗎？

Answer 1

嘗試：

gem install mysql2 -- --with-mysql-config=/Applications/MAMP/Library/bin/mysql_config

Answer 2

我通過使用mysql配置現有配置運行gem install來解決這個問題。

gem install mysql2 -v {mysql2_gem_version} --  --with-mysql-config=/usr/local/Cellar/mysql/{mysql_gem_version}/bin/mysql_config



gem install mysql2 -v '0.3.17' -- --with-mysql-config=/usr/local/Cellar/mysql/5.6.21/bin/mysql_config

Answer 3

嘗試這個：

首先使用以下命令添加以下依賴項：

sudo apt-get install mysql-server-5.5

sudo apt-get install mysql-client libmysqlclient-dev

sudo apt-get install libmysqld-dev libmysqlclient-dev mysql-client

最后在Gemfile中添加'mysql2', '~> 0.3.16'並捆綁安裝

Answer 4

無關：

我將應用程序部署到生產環境時遇到此問題（Linux Server）

我必須安裝它來修復丟失的寶石

百勝安裝mysql-devel