Problem reinstalling mysql gem

Ruby
1

I had to reload my system and am trying to bring up ruby on my kubuntu
system. I’ve compiled / installed ruby and rubygems. I then run
sudo gem install mysql -y

I select 2 when it asks for mysql 2.7 (ruby). It then runs a bit, then I
get the following errors:

 ERROR: Failed to build gem native extension.
 Gem files will remain installed in
    /usr/local/lib/ruby/gems/1.8/gems/mysql-2.7 for inspection.

 Results logged to

/usr/local/lib/ruby/gems/1.8/gems/mysql-2.7/gem_make.out

I have no idea what to look at other than the file that supposedly it
was logged to, but the “gem_make.out” file has absolutely nothing in it
(actually, it has 1 byte, but I think it’s a space)

Can anyone offer any help.
As always, thanks in advance.
—Michael

2

Hi Michael,

If you are running on osx you probably have the compile problem listed
on this site:

http://www.railtie.net/articles/2006/09/12/running-rails-on-os-x-with-mysql-5-0-24

Once you add the #define ulong unsigned long as one of the top lines
of mysql.c in the gem, you can just do:

  • sudo ruby extconf.rb
  • sudo make
  • sudo make install

Let me know if this helps?

Cheers,
Carl.

3

Carl W. wrote:

Hi Michael,

If you are running on osx you probably have the compile problem listed
on this site:

Good try, but I’m running Kubuntu Linux.

4

Ahh k,

not sure then, you will need to get the error out or you can use apt
to install it?

Cheers,
Carl.

5

Carl W. wrote:

Ahh k,

not sure then, you will need to get the error out or you can use apt
to install it?

Getting the error out seems to be a problem. It tells me where it has
logged it, but it didn’t put anything in that file.

6

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Michael S. wrote:

Carl W. wrote:

Ahh k,

not sure then, you will need to get the error out or you can use apt
to install it?

Getting the error out seems to be a problem. It tells me where it has
logged it, but it didn’t put anything in that file.

Try to install the Ubuntu-Mysql development packages. I guess it is
libmysqlclient12-dev, but I’m not sure about this.

If gem_make.out is empty you can have a look into mkmf.log (same
directory).

Stefan
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7

On Nov 24, 2006, at 8:10 PM, Michael S. wrote:

    /usr/local/lib/ruby/gems/1.8/gems/mysql-2.7 for inspection.

As always, thanks in advance.
—Michael

Hey Michael-

Run this command:

$ which mysql_config

If that returns a path to mysql_config then you can install the

mysql gem with this command:

$ sudo gem install mysql – --with-mysql-config

If you don't have mysql_config in your path then you may be better

off trying to install the .deb package for libmysql-ruby from apt.

Cheers-

– Ezra Z.
– Lead Rails Evangelist
– [email protected]
– Engine Y., Serious Rails Hosting
– (866) 518-YARD (9273)