Can't Install MySQL2 0.3.16 gem on Ruby - mysql

Question

I'm having a bunch of problems installing the mysql2 gem on Ruby, I've tried a lot of guides, but nothing seems to be working... Here's the error when I try to install it, without any extra commands.
C:\Users\Julián>gem install mysql2 --no-rdoc --no-ri
Temporarily enhancing PATH to include DevKit...
Building native extensions. This could take a while...
ERROR: Error installing mysql2:
ERROR: Failed to build gem native extension.
C:/Ruby200-x64/bin/ruby.exe 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
checking for mysql_query() in -lmysqlclient... no
checking for main() in -lm... yes
checking for mysql_query() in -lmysqlclient... no
checking for main() in -lz... no
checking for mysql_query() in -lmysqlclient... no
checking for main() in -lsocket... no
checking for mysql_query() in -lmysqlclient... no
checking for main() in -lnsl... no
checking for mysql_query() in -lmysqlclient... no
checking for main() in -lmygcc... no
checking for mysql_query() in -lmysqlclient... no
*** 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=C:/Ruby200-x64/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}/
--with-mysql-config
--without-mysql-config
--with-mysql-dir
--without-mysql-dir
--with-mysql-include
--without-mysql-include=${mysql-dir}/include
--with-mysql-lib
--without-mysql-lib=${mysql-dir}/
--with-mysqlclientlib
--without-mysqlclientlib
--with-mlib
--without-mlib
--with-mysqlclientlib
--without-mysqlclientlib
--with-zlib
--without-zlib
--with-mysqlclientlib
--without-mysqlclientlib
--with-socketlib
--without-socketlib
--with-mysqlclientlib
--without-mysqlclientlib
--with-nsllib
--without-nsllib
--with-mysqlclientlib
--without-mysqlclientlib
--with-mygcclib
--without-mygcclib
--with-mysqlclientlib
--without-mysqlclientlib
extconf failed, exit code 1
Gem files will remain installed in C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/mysql
2-0.3.16 for inspection.
Results logged to C:/Ruby200-x64/lib/ruby/gems/2.0.0/extensions/x64-mingw32/2.0.
0/mysql2-0.3.16/gem_make.out
I'm really stumped, I tried to find a solution around here but couldn't find anything. I tried installing MySQL connectors and setting with-mysql-lib commands. Please help!

Answer 1

Since it appears you're using Windows, you need to consider you have to install the MYSQL C-Connector header files to get it to work
We've written a tutorial about this here
--
You'll want to use the following steps:
Install the MYSQL C-Connector files (without any spaces in path)
Install the MYSQL2 gem again (with correct path references)
Copy lbmysql.dll to your ruby/bin folder
Firstly, you'll want to downlaod the MYSQL C-Connector files:
It has to be 32-bit C-Connector
Once you've installed this into a path with no spaces, you can then use the mysql2 installation command again, with config options:
gem install mysql2 --platform=ruby -- '--with-mysql-dir="C:\mysql-connector-path"'
After this, you can then transfer libmysql.dll from your mysql files to your ruby/bin directory:

Answer 2

in a terminal.. First do a ‘locate mysql_config’ and then replace the path in the following command with where that file is.
gem install mysql2 --no-rdoc --no-ri --with-mysql-config=path