Rails 3.2.3 MySQL 5.5.1 Mysql2 gem install fails with ld incompatibilities
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09-06-2021 - |
Question
I have a clean build system as follows
Ubuntu 11.04
Rvm 1.13.5
Ruby 1.9.3p194
Rails 3.2.3
Gem 1.8.24
MySql 5.5.24-1 (installed in /usr/local)
I am trying to install the mysql2 gem (0.3.11) and getting the following problem:
pal@smurf01:~$ sudo gem install mysql2
[sudo] password for pal:
Building native extensions. This could take a while...
ERROR: Error installing mysql2:
ERROR: Failed to build gem native extension.
/usr/local/rvm/rubies/ruby-1.9.3-p194/bin/ruby extconf.rb
checking for rb_thread_blocking_region()... yes
checking for rb_wait_for_single_fd()... yes
checking for mysql.h... yes
checking for errmsg.h... yes
checking for mysqld_error.h... yes
creating Makefile
make
compiling client.c
client.c: In function 'rb_raise_mysql2_error':
client.c:98:3: warning: ISO C90 forbids mixed declarations and code
client.c: In function 'rb_mysql_client_socket':
client.c:590:3: warning: ISO C90 forbids mixed declarations and code
compiling mysql2_ext.c
compiling result.c
linking shared-object mysql2/mysql2.so
/usr/bin/ld: skipping incompatible /usr/local/mysql/lib/libmysqlclient_r.so when searching for -lmysqlclient_r
/usr/bin/ld: skipping incompatible /usr/local/mysql/lib/libmysqlclient_r.a when searching for -lmysqlclient_r
/usr/bin/ld: cannot find -lmysqlclient_r
collect2: ld returned 1 exit status
make: *** [mysql2.so] Error 1
Gem files will remain installed in /usr/local/rvm/gems/ruby-1.9.3-p194/gems/mysql2-0.3.11 for inspection.
Results logged to /usr/local/rvm/gems/ruby-1.9.3-p194/gems/mysql2-0.3.11/ext/mysql2/gem_make.out
pal@smurf01:~$
First question: Has anyone got Rails mysql2 running with MySql 5.5.1 on Ubuntu? I have it running on another system with 5.1. The gem description is vague on supported MySql versions.
Second question: Has anyone encountered this problem? I± have battled various library issues with the mysql2 gem over the passed year or so but this seems to be different.
Any assistance is gratefully recieved.
BTW: Reverting back to MySql 5.1 is a valid solution!
Regards
Peter
Solution 2
So the problem appears to have been a missing library and some links. Doing the following solved the issue.
Get the new and install the libmysqlclient-dev deb package kindly provided by Nathan Rennie Waldock
wget http://ppa.launchpad.net/nathan-renniewaldock/ppa/ubuntu/pool/main/m/mysql-5.5/libmysqlclient-dev_5.5.24-1~ppa1~natty_amd64.deb./;l
dpkg -i libmysqlclient-dev_5.5.24-1~ppa1~natty_amd64.deb
Then create some links that mysql2 needs as it can't seem to follow the mysql path
cd /usr/lib/
ln -s /usr/local/mysql-5.5.24-linux2.6-x86_64/lib/libmysqlclient_r.a .
ln -s /usr/local/mysql-5.5.24-linux2.6-x86_64/lib/libmysqlclient_r.so .
ln -s /usr/local/mysql-5.5.24-linux2.6-x86_64/lib/libmysqlclient_r.so.18 .
ln -s /usr/local/mysql-5.5.24-linux2.6-x86_64/lib/libmysqlclient_r.so.18.0.0 .
Now happily install the mysql2 gem
sudo gem install mysql2
Fetching: mysql2-0.3.11.gem (100%)
Building native extensions. This could take a while...
Successfully installed mysql2-0.3.11
1 gem installed
Installing ri documentation for mysq2l-0.3.11...
Installing RDoc documentation for mysql2-0.3.11...
OTHER TIPS
Or just apt-get install libmysqlclient-dev
and then gem install mysql2
Had the same issue in Ubuntu 12.04 also using the ppa mentioned in the accepted answer. But also there was no libmysqlclient file on my system with _r in the name. Googling around I found out that package builders have started to drop the _r suffix from the files, so that might have happened between 11.10 and 12.04.
Also the paths were a bit different to the once mentioned so these are the symlinks that I had to create:
ln -s /usr/lib/x86_64-linux-gnu/libmysqlclient.a ./libmysqlclient_r.a
ln -s /usr/lib/x86_64-linux-gnu/libmysqlclient.so ./libmysqlclient_r.so
ln -s /usr/lib/x86_64-linux-gnu/libmysqlclient.so.18 ./libmysqlclient_r.so.18
ln -s /usr/lib/x86_64-linux-gnu/libmysqlclient.so.18.0.0 ./libmysqlclient_r.so.18.0.0
I had this problem as well...
I did dpkg -r mysql-devel
as when I was trying to do apt-get install libmysqlclient-dev
I got an error saying:
Unpacking libmysqlclient-dev (from .../libmysqlclient-dev_5.5.24-0ubuntu0.12.04.1_i386.deb) ... dpkg: error processing /var/cache/apt/archives/libmysqlclient-dev_5.5.24-0ubuntu0.12.04.1_i386.deb (--unpack): trying to overwrite '/usr/bin/mysql_config', which is also in package mysql-devel 5.5.28-2
After doing this, gem install mysql2
worked! yay :)