CODEWITHSUNDEEP
ruby-on-railsrubyrubygems
Khalos
Khalos

Reputation: 2373

Setting up Ruby on Rails App. Problems installing mysql gem

I'm trying to set up rails for the first time. I've got the app made, I've been following lots of guides.

When I try to install the mysql gem gem install mysql

Building native extensions.  This could take a while...
ERROR:  Error installing mysql:
        ERROR: Failed to build gem native extension.

        /usr/bin/ruby extconf.rb
checking for mysql_ssl_set()... no
checking for rb_str_set_len()... no
checking for rb_thread_start_timer()... no
checking for mysql.h... no
checking for mysql/mysql.h... 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=/usr/bin/ruby
        --with-mysql-config
        --without-mysql-config

Looking around on SO and Google, people say to do:

gem install mysql --with-mysql-config=/usr/bin/mysql_config

but I get:

ERROR:  While executing gem ... (OptionParser::InvalidOption)
    invalid option: --with-mysql-config=/usr/bin/mysql_config

Any ideas on how I can get this to work?

Upvotes: 1

Views: 1857

Answers (1)

Brent Sowers
Brent Sowers

Reputation: 663

If you haven't already you'll need to install the MySQL development library as root:

yum install mysql-devel

Then in the gem install command you need to have another -- in the command line before the --with-mysql-config option:

gem install mysql -- --with-mysql-config=/usr/bin/mysql_config

Upvotes: 1

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