From: Jim Wharton <jamesawharton@...>
Date: 2012-01-26T03:36:45+09:00
Subject: Install mysql2 gem in Ubuntu 11.10 with RVM

I'm trying to get this gem installed and it keeps puking up errors. All
the searches I've done tell me that I need to have the
libmysqlclient-dev libraries installed. I do. But when I attempt to gem
install mysql2:

jim@caesar ~/Sites/igpt/install/shapefiles[testoo*]$ gem install mysql2
-- --with-mysql-config=/usr/bin/mysql_config
Building native extensions.  This could take a while...
ERROR:  Error installing mysql2:
  ERROR: Failed to build gem native extension.

        /home/jim/.rvm/rubies/ruby-1.8.7-p334/bin/ruby extconf.rb
--with-mysql-config=/usr/bin/mysql_config
checking for rb_thread_blocking_region()... no
checking for rb_wait_for_single_fd()... no
checking for mysql.h... yes
checking for errmsg.h... yes
checking for mysqld_error.h... yes
creating Makefile

make
gcc -I. -I.
-I/home/jim/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/1.8/i686-linux -I.
-DHAVE_MYSQL_H -DHAVE_ERRMSG_H -DHAVE_MYSQLD_ERROR_H
-D_FILE_OFFSET_BITS=64  -I/usr/include/mysql  -DBIG_JOINS=1
-fno-strict-aliasing   -DUNIV_LINUX -DUNIV_LINUX -fPIC -g -O2  -fPIC
-Wall -funroll-loops  -c result.c
result.c: In function ‘rb_mysql_result_fetch_row’:
result.c:258:31: warning: variable ‘tokens’ set but not used
[-Wunused-but-set-variable]
result.c:272:58: warning: variable ‘tokens’ set but not used
[-Wunused-but-set-variable]
result.c:315:33: warning: variable ‘tokens’ set but not used
[-Wunused-but-set-variable]
gcc -I. -I.
-I/home/jim/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/1.8/i686-linux -I.
-DHAVE_MYSQL_H -DHAVE_ERRMSG_H -DHAVE_MYSQLD_ERROR_H
-D_FILE_OFFSET_BITS=64  -I/usr/include/mysql  -DBIG_JOINS=1
-fno-strict-aliasing   -DUNIV_LINUX -DUNIV_LINUX -fPIC -g -O2  -fPIC
-Wall -funroll-loops  -c mysql2_ext.c
./client.h:16:1: warning: ‘rb_thread_blocking_region’ defined but not
used [-Wunused-function]
gcc -I. -I.
-I/home/jim/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/1.8/i686-linux -I.
-DHAVE_MYSQL_H -DHAVE_ERRMSG_H -DHAVE_MYSQLD_ERROR_H
-D_FILE_OFFSET_BITS=64  -I/usr/include/mysql  -DBIG_JOINS=1
-fno-strict-aliasing   -DUNIV_LINUX -DUNIV_LINUX -fPIC -g -O2  -fPIC
-Wall -funroll-loops  -c client.c
client.c: In function ‘rb_mysql_client_info’:
client.c:539:3: warning: variable ‘wrapper’ set but not used
[-Wunused-but-set-variable]
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
collect2: ld returned 1 exit status
make: *** [mysql2.so] Error 1


Gem files will remain installed in
/home/jim/.rvm/gems/ruby-1.8.7-p334@rails307/gems/mysql2-0.3.11 for
inspection.
Results logged to
/home/jim/.rvm/gems/ruby-1.8.7-p334@rails307/gems/mysql2-0.3.11/ext/mysql2/gem_make.out

It just crashes out.

Any ideas from that error?

-Jim

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