From: Eric Wong <normalperson@...>
Date: 2012-01-26T04:19:38+09:00
Subject: Re: Install mysql2 gem in Ubuntu 11.10 with RVM

Jim Wharton <jamesawharton@gmail.com> wrote:
> gcc -shared -o mysql2.so result.o mysql2_ext.o client.o -L.
> -L/home/jim/.rvm/rubies/ruby-1.8.7-p334/lib
> -Wl,-R/home/jim/.rvm/rubies/ruby-1.8.7-p334/lib -L.  -rdynamic
> -Wl,-export-dynamic -Wl,-rpath,/usr/lib/mysql    -Wl,-R
> -Wl,/home/jim/.rvm/rubies/ruby-1.8.7-p334/lib
> -L/home/jim/.rvm/rubies/ruby-1.8.7-p334/lib -lruby
> -Wl,-Bsymbolic-functions -rdynamic -L/usr/lib/mysql -lmysqlclient_r
> -lrt -ldl -lcrypt -lm   -lc
> /usr/bin/ld: skipping incompatible
> /home/jim/.rvm/rubies/ruby-1.8.7-p334/lib/libruby.so when searching for
> -lruby
> /usr/bin/ld: skipping incompatible
> /home/jim/.rvm/rubies/ruby-1.8.7-p334/lib/libruby.so when searching for
> -lruby
> /usr/bin/ld: cannot find -lruby

I'm not familiar with RVM (but many people on this list are), but
I'm wondering why libruby.so is there.  Do you find libruby-static.a
in /home/jim/.rvm/rubies/ruby-1.8.7-p334 as well?

Can you run "file /home/jim/.rvm/rubies/ruby-1.8.7-p334/lib/libruby.so"
and see if it's a valid shared object?  Any chance you're running
a mixed 32/64-bit userland and you got them mixed up in your RVM
installation?

This doesn't appear to be an issue with mysql2 specifically, but
any C extensions you might have...

> Results logged to
> /home/jim/.rvm/gems/ruby-1.8.7-p334@rails307/gems/mysql2-0.3.11/ext/mysql2/gem_make.out

Does gem_make.out have any extra info not in your original email?