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Ruby On Rails native MySQL Bindings Vs. RMagick

I’m writing this post in english in hope that more people find it useful…

Some times ago i really had bad problems installing the MySQL Gem 2.7 with Ruby 1.8.2 or 1.8.5 in conjunction with Rails 1.1.6 on Mac OS X 10.4

Compilation failed with:

Building native extensions. This could take a while…
mysql.c: In function ‘Init_mysql’:
mysql.c:2015: error: ‘ulong’ undeclared (first use in this function)
mysql.c:2015: error: (Each undeclared identifier is reported only once
mysql.c:2015: error: for each function it appears in.)
mysql.c:2015: error: parse error before numeric constant
mysql.c:2018: error: parse error before numeric constant
make: *** [mysql.o] Error 1
mysql.c: In function ‘Init_mysql’:
mysql.c:2015: error: ‘ulong’ undeclared (first use in this function)
mysql.c:2015: error: (Each undeclared identifier is reported only once
mysql.c:2015: error: for each function it appears in.)
mysql.c:2015: error: parse error before numeric constant
mysql.c:2018: error: parse error before numeric constant
make: *** [mysql.o] Error 1
ruby extconf.rb install mysql — –with-mysql-dir=/usr/local/mysql
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… yes
checking for mysql_query() in -lmysqlclient… yes
checking for mysql_ssl_set()yes
checking for mysql.h… yes
creating Makefile

The gem would then install with Successfully installed mysql-2.7. Creepy!!! But that damn thing just didn’t work.

After quite some googling i found this one:

Running Rails on OS X with MySQL 5.0.24

It’s all about puting a little

#ifndef ulong 
#define ulong unsigned long
#endif

somewhere in “/usr/include/stdlib.h”.

This tipp is still necessary for MySQL 5.0.24+. Thanks again mate!!

But here the trouble starts….

I put the define in a nice little conditional just in case but bah… It would come down to hunt me…

For my project DailyFratze.de i also need RMagick. Again, the gem (1.14.1, 1.14.0 and 1.13) failed to compile but didn’t tell (on runtime it said “require “RMagick” LoadError: No such file to load — RMagick.so” … ) and installation from source did fail as well with:

setup.rb:655:in `command': system("make") failed (RuntimeError)
from setup.rb:664:in `make'
from setup.rb:1258:in `setup_dir_ext'
from setup.rb:1532:in `__send__'
from setup.rb:1532:in `traverse'
from setup.rb:1530:in `dive_into'
from setup.rb:1530:in `traverse'
from setup.rb:1534:in `traverse'
from setup.rb:1533:in `each'
... 8 levels...
from setup.rb:826:in `__send__'
from setup.rb:826:in `invoke'
from setup.rb:772:in `invoke'
from setup.rb:1578
make: *** [all] Error 1

Damn! After banging my head against the walls, reinstalling ImageMagick and all it’s depencies either direct from source, via i-installer and finally as mentioned here i took a break, visited some porn sites and stuff like that and though, hmm… stdlib.h….

I removed the little define and bam! It’s that easy, RMagick compiles just fine…

From the forums i found i guess other people with the same error message may have the same problem as i had…

I really wish installing a ruby on rails environment would be a less pain in the ass…. somewhere near as easy as developing with rails.

2 Comments

  1. Peter wrote:

    Hi Michael,

    I’m having the same issue with RMagick in my Mac OS 10.4.8, after following this article:
    http://hivelogic.com/narrative.....agick_os_x

    I’m getting:

    MissingSourceFile in ProfileController#new
    no such file to load — RMagick.so

    Any ideas please.

    Thanks,

    Peter.

    Posted on 19-Mar-07 at 8:28 am | Permalink
  2. Michael wrote:

    First i’d try to uninstall the gem and try installing rmagick from source and see if it really compiles… i made the experience that the gem wouldn’t tell you it’s failure.

    Then use
    require ‘RMagick’
    in your controller. require_gem or the new gem didn’t work for me.

    I made good experience using darwin ports for imagemagick and it’s needed libraries on some newer projects… much less pain in the ass getting things to work.

    Posted on 19-Mar-07 at 8:58 am | Permalink

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