adapters needed posted by Sam Ruby @ Fri, 27 Jun 2008 17:57:54 -0000

Sam Ruby — Fri, 27 Jun 2008 17:57:54 -0000

This is all deja vu

I suggest that you take it slower. Here’s what I said before:

Then proceed to starting the server.

Were you able to do that?

Only after you have been able to start the server, verify that you can access the server from the mysql client.

Was this successful?

Only after you have been able to verify access from the mysql client, try the simple ruby program I provided above.

Did you try this?

Only after the simple ruby program has been verified should you try configuring Rails to use mysql.

. . .

adapters needed posted by David Schwartz @ Fri, 27 Jun 2008 13:35:13 -0000

David Schwartz — Fri, 27 Jun 2008 13:35:13 -0000

Found the log in /Documents/RubyRails/mysql adapters/mysql-ruby-2.8pre2/. It contains lots of errors such as the following. Not sure what it all means.

David
========================

find_library: checking for mysql_query() in ~~lmysqlclient… -~~-—-—-——- no

“gcc -o conftest -I. -I/usr/local/lib/ruby/1.8/i686-darwin9.3.0 -I. -I/usr/local/include -D_XOPEN_SOURCE=1 -fno-common -pipe -fno-common conftest.c -L”.” -L”/usr/local/lib” -L”/usr/local/lib” -L. -lz -lm -lruby-static -lmysqlclient -lz -lm -lpthread -ldl -lobjc ”
conftest.c: In function ‘t’:
conftest.c:3: error: ‘mysql_query’ undeclared (first use in this function)
conftest.c:3: error: (Each undeclared identifier is reported only once
conftest.c:3: error: for each function it appears in.)
checked program was:
/* begin /
1: /top/
2: int main() { return 0; }
3: int t() { void ((volatile p)()); p = (void (()()))mysql_query; return 0; }
/ end /

“gcc -o conftest -I. -I/usr/local/lib/ruby/1.8/i686-darwin9.3.0 -I. -I/usr/local/include -D_XOPEN_SOURCE=1 -fno-common -pipe -fno-common conftest.c -L”.” -L”/usr/local/lib” -L”/usr/local/lib” -L. -lz -lm -lruby-static -lmysqlclient -lz -lm -lpthread -ldl -lobjc ”
conftest.c: In function ‘t’:
conftest.c:3: error: ‘mysql_query’ undeclared (first use in this function)
conftest.c:3: error: (Each undeclared identifier is reported only once
conftest.c:3: error: for each function it appears in.)
checked program was:
/ begin /
1: /top/
2: int main() { return 0; }
3: int t() { void ((volatile p)()); p = (void (()()))mysql_query; return 0; }
/ end */

adapters needed posted by Sam Ruby @ Fri, 27 Jun 2008 08:09:30 -0000

Sam Ruby — Fri, 27 Jun 2008 08:09:30 -0000

Did you check the mkmf.log ?

adapters needed posted by David Schwartz @ Fri, 27 Jun 2008 05:47:32 -0000

David Schwartz — Fri, 27 Jun 2008 05:47:32 -0000

So, I figured out how to uninstall mysql and deleted the package. I installed what I realized was the appropriate package for 10.5, updated the gems just fine and created depot_development database so I think I’m making progress.

When I went to install the adapters, I executed ‘ruby extconf.rb’ but it failed. Any thoughts?

Thanks,
David

—-—-—-—-—--
david:mysql-ruby-2.8pre2 david$ ruby extconf.rb
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… no
checking for main() in -lsocket… no
checking for mysql_query() in -lmysqlclient… no
checking for main() in -lnsl… no
checking for mysql_query() in -lmysqlclient… no
checking for main() in -lmygcc… no
checking for mysql_query() in -lmysqlclient… no

extconf.rb failed *
Could not create Makefile due to some reason, probably lack of
necessary libraries and/or headers. Check the mkmf.log file for more
details. You may need configuration options.

Provided configuration options: —with-opt-dir —without-opt-dir —with-opt-include —without-opt-include=${opt-dir}/include —with-opt-lib —without-opt-lib=${opt-dir}/lib —with-make-prog —without-make-prog —srcdir=. —curdir —ruby=/usr/local/bin/ruby —with-mysql-config —without-mysql-config —with-mysql-dir —without-mysql-dir —with-mysql-include —without-mysql-include=${mysql-dir}/include —with-mysql-lib —without-mysql-lib=${mysql-dir}/lib —with-mysqlclientlib —without-mysqlclientlib —with-mlib —without-mlib —with-mysqlclientlib —without-mysqlclientlib —with-zlib —without-zlib —with-mysqlclientlib —without-mysqlclientlib —with-socketlib —without-socketlib —with-mysqlclientlib —without-mysqlclientlib —with-nsllib —without-nsllib —with-mysqlclientlib —without-mysqlclientlib —with-mygcclib —without-mygcclib —with-mysqlclientlib —without-mysqlclientlib

adapters needed posted by Sam Ruby @ Tue, 24 Jun 2008 10:56:46 -0000

Sam Ruby — Tue, 24 Jun 2008 10:56:46 -0000

On the systems I have installed it, mysql’s default user is root, and default password is blank, and generally are accompanied by instructions to change the password. Try it. But if you’ve changed the password, I don’t think I can be of much help with trying to recover it.

Previously I argued against reinstalling, based on not knowing what is going on, which made me concerned that reinstalling wouldn’t necessarily address the problem. But if the problem is a lost password, then re-installing may be an option.

I would recommend proceeding incrementally. Reinstall mysql if you must. Then proceed to starting the server. Only after you have been able to start the server, verify that you can access the server from the mysql client. Only after you have been able to verify access from the mysql client, try the simple ruby program I provided above. Only after the simple ruby program has been verified should you try configuring Rails to use mysql.

adapters needed posted by David Schwartz @ Sun, 22 Jun 2008 16:47:18 -0000

David Schwartz — Sun, 22 Jun 2008 16:47:18 -0000

Still with me Sam?

adapters needed posted by David Schwartz @ Tue, 17 Jun 2008 03:30:46 -0000

David Schwartz — Tue, 17 Jun 2008 03:30:46 -0000

It asks for a password.

adapters needed posted by Sam Ruby @ Mon, 16 Jun 2008 12:19:09 -0000

Sam Ruby — Mon, 16 Jun 2008 12:19:09 -0000

What happens when you try to start mysql?

sudo /usr/local/mysql/bin/mysqld_safe --user=mysql &

adapters needed posted by David Schwartz @ Sun, 15 Jun 2008 22:22:59 -0000

David Schwartz — Sun, 15 Jun 2008 22:22:59 -0000

right, I’ve been going through the book on my thinkpad (Win2K) but I do realize that I could also do the same on my Mac independent of this issue. Only once I start collaborating with my partner on our project will mysql become an issue.

As I said, the mysql preference panel indicates that the server isn’t running.

—d

adapters needed posted by Sam Ruby @ Sun, 15 Jun 2008 14:38:09 -0000

Sam Ruby — Sun, 15 Jun 2008 14:38:09 -0000

Before assuming that you are messed up, are you sure that the server is started?

Also, just curious: you are aware that most of the topics covered in the book are database independent, right? Sqlite3 has fewer moving parts (in particular, no separate server). You should be able to proceed with sqlite3 in parallel while you are resolving this issue.

adapters needed posted by David Schwartz @ Fri, 13 Jun 2008 23:48:20 -0000

David Schwartz — Fri, 13 Jun 2008 23:48:20 -0000

At this point, I think my mysql installation is seriously messed up. I can’t seem to start the server through my mysql preference panel. I get the following as well.

david:local david$ mysql -u root
ERROR 2002 (HY000): Can’t connect to local MySQL server through socket ’/tmp/mysql.sock’ (2)

Thanks again for sticking with me on this…..

adapters needed posted by Sam Ruby @ Fri, 13 Jun 2008 14:19:36 -0000

Sam Ruby — Fri, 13 Jun 2008 14:19:36 -0000

Before trying to install another version of MySQL, let’s see what you have got. I’m concerned about the confusion that trying to use the binding that you generated for one version of MySQL against another version of MySQL may cause.

Since the ‘require’ failed, you either don’t have the Ruby binding gem installed, or Ruby can’t find it. Let’s try two things.

First, lets verify that you have MySQL client and server installed:

mysql -u root
select version();
quit;

I’m following along on Ubuntu, and get 5.0.45-Debian_1ubuntu3.3-log.

Next, lets try adding an explicit require for rubygems:

irb
require 'rubygems'
require 'mysql'
m = Mysql.new(host, user, passwd)
m.query('select version()').each {|row| puts row}

adapters needed posted by David Schwartz @ Fri, 13 Jun 2008 04:52:04 -0000

David Schwartz — Fri, 13 Jun 2008 04:52:04 -0000

Unfortunately, those instructions pointed to a page that no longer exists. I did find mysql-5.0.45-osx10.4-i686.dmg and downloaded it (but not installing just yet). I have mysql in /usr/local/ so I left it alone. (I’d like to install the new .dmg; how would I uninstall the mysql currently installed?)

This is what I got executing the commands you posted (the control panel shows that the server is running, btw):

david:~ david$ cd /usr/local/
david:local david$ irb
irb(main):001:0> require ‘mysql’
LoadError: no such file to load—mysql from (irb):1:in `require’ from (irb):1
irb(main):002:0>

adapters needed posted by Sam Ruby @ Thu, 12 Jun 2008 08:48:35 -0000

Sam Ruby — Thu, 12 Jun 2008 08:48:35 -0000

You are going to need to start the server (see instructions), and then specify the name of the host you started the server on. If you started the server on the same machine as the client, “localhost” will do. The default user is “root” and password is ””, but you probably want to change that.

adapters needed posted by David Schwartz @ Thu, 12 Jun 2008 02:37:42 -0000

David Schwartz — Thu, 12 Jun 2008 02:37:42 -0000

Sorry for being so dense but I presume that I make up the user and passwd. Where do I get the host?

David

adapters needed posted by Sam Ruby @ Wed, 11 Jun 2008 14:00:30 -0000

Sam Ruby — Wed, 11 Jun 2008 14:00:30 -0000

Sorry for the delay… I’m back now.

What you described above “CC=gcc … enabled-shared” actually is one command. If you dropped the trailing backslashes from all lines but the last one and concatenated it on one line, it should work the same. For convenience, Unix based command shells allow you to split up such commands into multiple lines by appending a backslash to the end of all but the last line.

But lets back up. There are several moving parts here. If you really want to stick with MySQL, you need several things. You need a MySQL server. You need a MySQL client. You need MySQL libraries. And you need a Ruby interface to those MySQL libraries.

The good news is that you might be there. If you can install the gem, you don’t need to update it. (In fact, as near as I can tell, both commands perform roughly the same function). You can tell for sure by issuing the following (filling in host, user and passwd):

irb
require 'mysql'
m = Mysql.new(host, user, passwd)
m.query('select version()').each {|row| puts row}

I’m a bit spoiled as I use sqlite3 and Ubuntu. Sqlite3 has many fewer moving parts. Even installing mysql-ruby on Ubuntu is as simple as apt-get install mysql-ruby.

adapters needed posted by David Schwartz @ Mon, 09 Jun 2008 23:01:19 -0000

David Schwartz — Mon, 09 Jun 2008 23:01:19 -0000

I hope you can stick with me! David

adapters needed posted by David Schwartz @ Fri, 06 Jun 2008 19:40:18 -0000

David Schwartz — Fri, 06 Jun 2008 19:40:18 -0000

ho boy. I’ve now executed ‘sudo gem install mysql——with-mysql-dir=/usr/local/mysql’ and get the same result upon executing ‘sudo gem update mysql’.

I don’t know where mysql is so don’t know where the log file is (I’m new to Unix as well :-( ). I have confirmed that mysql is installed though by getting into the mysql interpreter via ‘mysql -u root’.

Let me ask another dumb question. The following was part of the MySQL installation instructions from Hivelogic. I assumed that each line was a separate command. Is this correct?

CC=gcc CFLAGS=”O3 -fno-omit-frame-pointer” CXX=gcc \
CXXFLAGS=”-O3 -fno-omit-frame-pointer -felide-constructors \
-fno-exceptions -fno-rtti” \
./configure—prefix=/usr/local/mysql \
-with-extra-charsets=complex ~~-enable-thread-safe-client \~~
-enable-local-infile—enable-shared

Thanks for hanging in there with me!

David

adapters needed posted by Sam Ruby @ Thu, 05 Jun 2008 15:52:23 -0000

Sam Ruby — Thu, 05 Jun 2008 15:52:23 -0000

No, I was just suggesting that you follow the mysql part of the instructions, specifically:

sudo gem install mysql -- --with-mysql-dir=/usr/local/mysql

adapters needed posted by David Schwartz @ Thu, 05 Jun 2008 15:41:13 -0000

David Schwartz — Thu, 05 Jun 2008 15:41:13 -0000

Should I remove what I’ve already done? FYI, my initial installation came per Hivelogic’s instructions. If so, what’s the best way of clearing everything out (Ruby, Rails, Mongrel, MySQL, Capistrano)?

Thanks for all your help!

David

adapters needed posted by Sam Ruby @ Thu, 05 Jun 2008 12:19:44 -0000

Sam Ruby — Thu, 05 Jun 2008 12:19:44 -0000

Once again, the log might be helpful, but I’ll take a guess that the gem installation couldn’t find the mysql libraries at all. Try following the hivelogic instructions for installing mysql. You’ll note that they pass an additional parameter telling the gem installer where to find the mysql libraries.

adapters needed posted by David Schwartz @ Thu, 05 Jun 2008 03:50:19 -0000

David Schwartz — Thu, 05 Jun 2008 03:50:19 -0000

So, I installed mysql with the help of the Hivelogic page. I tried to validate that the configuration is set (seemed to pass their test) with the ‘sudo gem update mysql’ you suggested but it seemed to fail. See the following:

Updating installed gems…
Attempting remote update of mysql
Building native extensions. This could take a while…
ERROR: Error installing mysql: ERROR: Failed to build gem native extension.

/usr/local/bin/ruby extconf.rb update 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… no
checking for main() in -lsocket… no
checking for mysql_query() in -lmysqlclient… no
checking for main() in -lnsl… no
checking for mysql_query() in -lmysqlclient… no

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
Gems updated: mysql

adapters needed posted by Sam Ruby @ Wed, 04 Jun 2008 17:59:04 -0000

Sam Ruby — Wed, 04 Jun 2008 17:59:04 -0000

OK, so it doesn’t look like you have the mysqlclient library installed.

Two common ways to get mysql installed on OS X: compiling it yourself and using ports

If you go the latter route, you will need to make sure that you first have ports installed

adapters needed posted by David Schwartz @ Wed, 04 Jun 2008 17:15:06 -0000

David Schwartz — Wed, 04 Jun 2008 17:15:06 -0000

I’m running on OS X 10.5.3. I found one of two logs by that name in mysql-2.7. Here’s the first part of the log which appears to report an error:

===============
find_library: checking for mysql_query() in ~~lmysqlclient… -~~-—-—-——- no

“gcc -o conftest -I. -I/usr/local/lib/ruby/1.8/i686-darwin9.3.0 -I. -I/usr/local/include -D_XOPEN_SOURCE=1 -fno-common -pipe -fno-common conftest.c -L”.” -L”/usr/local/lib” -L”/usr/local/lib” -L. -lruby-static -lmysqlclient -lpthread -ldl -lobjc ”
conftest.c: In function ‘t’:
conftest.c:3: error: ‘mysql_query’ undeclared (first use in this function)
conftest.c:3: error: (Each undeclared identifier is reported only once
conftest.c:3: error: for each function it appears in.)
checked program was:
/* begin /
1: /top/
2: int main() { return 0; }
3: int t() { void ((volatile p)()); p = (void (()()))mysql_query; return 0; }
/ end */
===============

adapters needed posted by Sam Ruby @ Wed, 04 Jun 2008 15:06:24 -0000

Sam Ruby — Wed, 04 Jun 2008 15:06:24 -0000

Check the mkmf.log file for more details.

That’s good advice. You look like you might be running on Linux? If so, this may help you find this file:

find /var/lib/gems/1.8/gems/ -name mkmf.log

Typical problems include not installing a prereq. On Ubuntu, you may need the following:

sudo apt-get install build-essential ruby1.8-dev libmysqlclient5-dev

Recent Posts in 'adapters needed' | Pragmatic Forums

adapters needed posted by Sam Ruby @ Fri, 27 Jun 2008 17:57:54 -0000

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