Comments on: Ruby, Mysql, CentOS 5, and 64-bit

By: david

david — Wed, 15 Apr 2009 08:08:23 +0000

heh, nevermind, got it.
% sudo yum install mysql-devel
sudo gem install mysql — –with-mysql-config=/usr/lib64/mysql/mysql_config
Building native extensions. This could take a while…
Successfully installed mysql-2.7
1 gem installed

schweet

By: david

david — Wed, 15 Apr 2009 08:04:02 +0000

% uname
2.6.18-92.el5 #1 SMP Tue Jun 10 18:51:06 EDT 2008 x86_64 x86_64 x86_64 GNU/Linux

% sudo gem install mysql — –with-mysql-config=/usr/lib64/mysql/mysql_config Building native extensions. This could take a while…
ERROR: Error installing mysql:
ERROR: Failed to build gem native extension.

/usr/bin/ruby extconf.rb install mysql — –with-mysql-config=/usr/lib64/mysql/mysql_config
checking for mysql_ssl_set()… 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

Gem files will remain installed in /usr/lib64/ruby/gems/1.8/gems/mysql-2.7 for inspection.
Results logged to /usr/lib64/ruby/gems/1.8/gems/mysql-2.7/gem_make.out

looks like this is killing it:
less /usr/lib64/ruby/gems/1.8/gems/mysql-2.7/mkmf.log
error: mysql/mysql.h: No such file or directory

where/how did you get the mysql headers?

By: James B. Byrne

James B. Byrne — Wed, 18 Mar 2009 12:11:21 +0000

Although it does not appear as a dependency anywhere, to successfully build the mysql gem on Centos-5.3 x86_64 one requires that zlib-devel.x86_64 be installed as well.

By: Michael

Michael — Sat, 07 Feb 2009 16:33:49 +0000

@ Mathieu: Excellent. Glad you got it working. You can drop the useless 32-bit packages or ensure 64-bit packages when installing by explicitly specifying the architecture when installing/uninstalling packages. For example, instead of simply

sudo yum install mysql mysql-devel mysql-server

You run this:

sudo yum install mysql.x86_64 mysql-dev.x86_64 mysql-server.x86_64

By: Mathieu Jobin

Mathieu Jobin — Sat, 07 Feb 2009 16:14:04 +0000

ok, i just had to look at the mkmf.log file

gcc was missing

and

[root@centos52-64 ~]# gem install mysql — –with-mysql-conf=/usr/lib64/mysql/mysql_config –with-mysql-lib=/usr/lib64/mysql/

is working, and all parameters were required.

By: Mathieu Jobin

Mathieu Jobin — Sat, 07 Feb 2009 15:40:41 +0000

Hi,

I run the exact same setup. 5.2, same kernel, 64bit. but it does not work.
same error

Gem files will remain installed in /usr/lib64/ruby/gems/1.8/gems/mysql-2.7 for inspection.
ruby extconf.rb install mysql — –with-mysql-conf=/usr/lib64/mysql/mysql_config\nchecking for mysql_query() in -lmysqlclient… no
checking for main() in -lm… no
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

any idea what else I could try?
I deleted the remaining stuff in gem dir and start over same thing.

I weird thing I’m not happy with is duplicate rpm 32bit and 64bit
is it a must under centos or there is a way to clean up the useless 32 bit stuff?

thanks