无法在MAMP上安装mysql2 Gem

Question

运行软件包安装后，出现此错误。我试过编辑/ etc / paths文件，但仍然没有用。

Gem :: Ext :: BuildError：错误：无法构建gem本机扩展。

/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

宝石文件

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

/ etc /路径

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

这与MySql安装有关吗？

Answer 1

尝试：

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