rake db:create command is not working. Why? [duplicate] - ruby-on-rails

I've been struggling with this for some time.
I've installed Rails 3, gem, mysql on my Snow Leopard machine. All was going well until I created my first project and tried to run
rails server
Upon running this I get:
jontybrook$ rails server
/Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle: dlopen(/Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle, 9): Library not loaded: libmysqlclient.16.dylib (LoadError)
Referenced from: /Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle
Reason: image not found - /Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle
from /Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2.rb:7
from /Library/Ruby/Gems/1.8/gems/bundler-1.0.7/lib/bundler/runtime.rb:64:in `require'
from /Library/Ruby/Gems/1.8/gems/bundler-1.0.7/lib/bundler/runtime.rb:64:in `require'
from /Library/Ruby/Gems/1.8/gems/bundler-1.0.7/lib/bundler/runtime.rb:62:in `each'
from /Library/Ruby/Gems/1.8/gems/bundler-1.0.7/lib/bundler/runtime.rb:62:in `require'
from /Library/Ruby/Gems/1.8/gems/bundler-1.0.7/lib/bundler/runtime.rb:51:in `each'
from /Library/Ruby/Gems/1.8/gems/bundler-1.0.7/lib/bundler/runtime.rb:51:in `require'
from /Library/Ruby/Gems/1.8/gems/bundler-1.0.7/lib/bundler.rb:112:in `require'
from /Users/jontybrook/Dropbox/CODING/simple_cms/config/application.rb:7
from /Library/Ruby/Gems/1.8/gems/railties-3.0.3/lib/rails/commands.rb:28:in `require'
from /Library/Ruby/Gems/1.8/gems/railties-3.0.3/lib/rails/commands.rb:28
from /Library/Ruby/Gems/1.8/gems/railties-3.0.3/lib/rails/commands.rb:27:in `tap'
from /Library/Ruby/Gems/1.8/gems/railties-3.0.3/lib/rails/commands.rb:27
from script/rails:6:in `require'
from script/rails:6
jontybrook$
As far as I can tell the problem is with the mysql2 gem. MySQL seems to be running fine and my Gemfile references mysql2, my database.yml file seems ok also.
The error mentions
Reason: image not found - /Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle
And yet
jontybrook$ cd /Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2
jontybrook$ ls
client.rb em.rb error.rb mysql2.bundle result.rb
MySQL2.bundle is there!?
If I use the old mysql gem, WEBrick boots fine. But that's not ideal, is it?
I've tried everything google can give me! Any help much appreciated.

I was never able to get any of these answers to work for me, but this is the command that I used to make it work for me. This way you don't need to use install_name_tool every time you update your mysql
sudo ln -s /usr/local/mysql/lib/libmysqlclient.18.dylib /usr/lib/libmysqlclient.18.dylib

I have solved this, eventually!
I re-installed Ruby and Rails under RVM. I'm using Ruby version 1.9.2-p136.
After re-installing under rvm, this error was still present.
In the end the magic command that solved it was:
sudo install_name_tool -change libmysqlclient.16.dylib /usr/local/mysql/lib/libmysqlclient.16.dylib ~/.rvm/gems/ruby-1.9.2-p136/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle

This fix worked very well for me:
Add the following to to your ~/.profile
export DYLD_LIBRARY_PATH=/usr/local/mysql/lib:$DYLD_LIBRARY_PATH
http://www.rickwargo.com/2010/12/16/installing-mysql-5-5-on-os-x-10-6-snow-leopard-and-rails-3/

For me this was just because I had upgraded mysql but hadn't updated the mysql2 gem - a reinstall of the gem will fix it...
gem pristine mysql2

I have the same issue. It looks like it's unable to find the libmysqlclient library. A temporary fix that has worked for me is the following:
export DYLD_LIBRARY_PATH=/usr/local/mysql/lib/
I am not sure where the config is specifying the load path or what it's set to but my mysql install did not appear to be in it. I'll post again if I find a more permanent solution.
Edit:
Actually this fix appears to more accurately address the problem.

Add the below to your ~/.bash_profile:
export DYLD_LIBRARY_PATH=/usr/local/mysql/lib:$DYLD_LIBRARY_PATH
This worked for me

In OSX El Capitan update when you do this:
sudo ln -s /usr/local/mysql/lib/libmysqlclient.18.dylib /usr/lib/libmysqlclient.18.dylib
it throws an error like
ln: /usr/lib/libmysqlclient.18.dylib: Operation not permitted
So to avoid this, what you can do is first locate libmysqlclient.18.dylib using the command
User$ locate libmysqlclient.18.dylib
In my case it returned /usr/local/mysql-5.5.24-osx10.5-x86_64/lib/libmysqlclient.18.dylib
So instead of usr/lib/ we will create symlink to usr/local/lib/ like this :
sudo ln -s /usr/local/mysql/lib/libmysqlclient.18.dylib /usr/local/lib/libmysqlclient.18.dylib
More details : https://forums.developer.apple.com/thread/7935

following lines works for me. I am using mac 10.7.2 .
sudo ln -s /usr/local/mysql/lib/libmysqlclient.18.dylib /usr/lib/libmysqlclient.18.dylib

Just ran into this problem. All I had to do is uninstall mysql2 gem and reinstall it. Hope this works for other people

This is how it worked for me:
I ran the below command
sudo install_name_tool -change libmysqlclient.18.dylib /usr/local/mysql/lib/libmysqlclient.18.dylib ~/.rvm/gems/ruby-1.9.2-p180/gems/mysql2-0.2.7/lib/mysql2/mysql2.bundle
My environments:
$ rails -v
Rails 3.0.6
$ mysql --version
mysql Ver 14.14 Distrib 5.5.11, for osx10.6 (i386) using readline 5.1
$ ruby -v
ruby 1.9.2p180 (2011-02-18 revision 30909) [x86_64-darwin10.7.0]
Hope this helps someone.

Thanks, Ogapo! Exporting that alias worked for me, and then I followed the link, and in my case the mysql2.bundle was up in /Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle so I adjusted the install_name_tool to modify that bundle rather than one in ~/.rvm and got that working the way it should be done.
So now:
$ otool -L /Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle
/Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle:
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/libruby.1.dylib (compatibility version 1.8.0, current version 1.8.7)
/usr/local/mysql/lib/libmysqlclient.16.dylib (compatibility version 16.0.0, current version 16.0.0)
/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 125.2.1)

hi it worked for me from the recommended link from Fredy Andersen
sudo install_name_tool -change libmysqlclient.16.dylib /usr/local/mysql /lib/libmysqlclient.16.dylib /Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle
just had to change to my version of mysql, in the command,
thanks

I solved this problem by deleting my gemset for my current project and recreating it and rerunning bundle install. I think I caused it by installing a newer version of mysql.

I had this issue when working with Django, I use brew to install a lot of my Open Source programs and I needed to do the following since I used brew to install mysql:
sudo ln -s /usr/local/Cellar/mysql/5.5.20/lib/libmysqlclient.18.dylib /usr/lib/libmysqlclient.18.dylib
Be sure to replace with your version of the libraries!

bundle install mysql --force helped me. It reinstalled dependencies which ware gone as a result of brew uninstall mysql.

Jonty, I'm struggling with this too.
I think there's a clue in here:
otool -L /Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle
/Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle:
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/libruby.1.dylib (compatibility version 1.8.0, current version 1.8.7)
libmysqlclient.16.dylib (compatibility version 16.0.0, current version 16.0.0)
/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 125.2.1)
Notice the path to the dylib is, uh, rather short?
I'm trying to figure out where the gem install instructions are leaving off the dylib path, but it's slow going as I have never built a gem myself.
I'll post more if I find more!

I've had this exact same problem a few days ago. I eventually managed to solve it. I'm not quite sure how, but I'll tell you what I did anyway. Maybe it'll help you.
I started by downloading RVM. If you aren't using it yet, I highly recommend doing so. It basically creates a sandbox for a new separate installation of Ruby, RoR and RubyGems. In fact, you can have multiple installations simultaneously and instantly switch to one other. It works like a charm.
Why is this useful? Because you shouldn't mess with the default Ruby installation in OS X. The system depends on it. It's best to just leave the default Ruby and RoR installation alone and create a new one using RVM that you can use for your own development.
Once I created my separate Ruby installation, I just installed RoR, RubyGems and mysql, and it worked. For the exact steps I took, see my question: Installing Rails, MySQL, etc. everything goes wrong
Again: I don't know for certain this will solve your problem. But it certainly did the trick for me, and in any case using RVM is highly recommendable.

I still found that with the solutions above, it didn't work (for example) with the Rails plugin for TextMate. I got a similar error (when retrieving the database schema).
So what did is, open terminal:
cd /usr/local/lib
sudo ln -s ../mysql-5.5.8-osx10.6-x86_64/lib/libmysqlclient.16.dylib .
Replace mysql-5.5.8-osx10.6-x86_64 with your own path (or mysql).
This makes a symbol link to the lib, now rails runs from the command line, as-well as TextMate plugin(s) like ruby-on-rails-tmbundle.
To be clear: this also fixes the error you get when starting rails server.

This usually happen when you upgrade mysql. The installed mysql2 gem which was built on the old mysql libs cannot work with new libs. Just need to reinstall it.
Uninstall mysql2 with gem uninstall mysql2. Then install it with gem install mysql2

I've resolved it by creating .rvmrc file in my project folder containg:
rvm use <yourrubie>
then entering my project path
cd ~/myprojectpath
then I run
bundle install

My version of luvlss's command:
Mac OSX 10.10.5
MySQL 5.6.27
Passenger 5.0.21
sudo ln -s /usr/local/mysql-5.6.27-osx10.8-x86_64/lib/libmysqlclient.18.dylib /usr/lib/libmysqlclient.18.dylib
If you're trying lots of different links, like I did, do some clean-up with:
sudo unlink /usr/lib/libmysqlclient.18.dylib

Open a Terminal and run the following:
export PATH=$PATH:/usr/local/mysql/bin
It should work.

If you're using OSX and installed mysql using brew, you can:
brew link mysql
If you're having trouble with the version (I had mysql 5.7 running while my gem required 5.6.25), you can
brew unlink mysql
brew switch mysql 5.6.25

For me I had to manually uninstall mysql
brew uninstall mysql
rm -rf /usr/local/var/mysql
brew install mysql

Related

Library not loaded: /usr/local/opt/readline/lib/libreadline.7.dylib

When I try running rails console I get this error:
/Users/TuzsNewMacBook/.rvm/gems/ruby-2.3.7/gems/bootsnap-1.3.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require':
dlopen(/Users/TuzsNewMacBook/.rvm/rubies/ruby-2.3.7/lib/ruby/2.3.0/x86_64-darwin18/readline.bundle, 9):
Library not loaded: /usr/local/opt/readline/lib/libreadline.7.dylib (LoadError)
A quick search got me to this post and I've tried a few things:
brew reinstall postgresql (this is indeed the DB for this project)
and
cd /usr/local/opt/readline/lib
ln libreadline.8.0.dylib libreadline.6.2.dylib
(my version of readline is 8)
and
brew link readline --force
But none of these have fixed it.
I recently added pry-coolline, guard and guard-livereload gems to my project if that makes any difference (rails console loaded fine before those). I'm running on the latest macos.
(Update) I’m using pry rails as my rails console, if that makes any difference.
Any help? Thanks.
the error seems to be thrown when searching for /usr/local/opt/readline/lib/libreadline.7.dylib.
Have you tried to symlink that?
So something like:
cd /usr/local/opt/readline/lib
ln -s libreadline.8.0.dylib libreadline.7.dylib
Just tried that on macOS Mojave, ruby 2.5.3p105 and Rails 5.2.2 and worked.
Reinstalling my Ruby version seems to have fixed it:
rvm reinstall 2.3.7
can you try
cd /usr/local/opt/readline/lib
ln -s libreadline.8.dylib libreadline.7.dylib
you are on the right track but it seems like rails is looking for libreadline.7.dylib and libreadline.7.dylib is not there in the folder.
Yes, the best answer is to reinstall.
You can get the version easily by typing:
ruby -v
With rbenv, the command is i.e.:
rbenv install 2.3.7
with rvm:
rvm reinstall 2.3.7
A very simple solution that doesn't involve rebuilding your RVM gemset OR sym-linking libraries.
Add to your Gemfile:
gem 'rb-readline'
If you are doing bundler groups
group :development do
gem 'rb-readline'
end
Then run
> bundle
Let me know if that doesn't work.
Most often in Ruby-applications, this is caused by gems that have extensions (the gems saying "Building native extensions.."), that are built using a specific version of, in this case, readline.
Basically, there are two solutions:
Either, you can symlink version 8 of the gem, to the version missing. This will work in many cases, but if backwards compatibility is broken, it will not.
Or, if the gem actually supports version 8, you can reinstall that specific gem, or "pristine" it by running gem pristine --all.
EDIT: In scope of your "what I've tried", reinstalling PostgreSQL, is also one of the binaries, built using a specific version, that may also require a rebuild, to work with a system library, such as readline.
Got this issue:
dyld: Library not loaded: /usr/local/opt/mpfr/lib/libmpfr.4.dylib
doing...
cd /usr/local/opt/mpfr/lib/
ln -s libmpfr.dylib libmpfr.4.dylib
did the trick for me for macOS Catalina
Background: This has happened when I tried to install tig, but I think this is a common issue that you may have that you need to manually link the installed software into the right path that another software wants.
If you can not find readline installed on your Mac, you should run
brew install readline
After you installed deadline, brew will ask you to link it. But actually you can not link by running
brew link readline
Even you can not link by running
sudo brew link readline
Mac OS will warn you this is extremely dangerous and stop you to do.
The Latest version of readline is version 8, so you will see the error message like
Library not loaded: /usr/local/opt/readline/lib/libreadline.8.dylib
The brew installed deadline at
/usr/local/Cellar/readline/8.0.4
So you have to manually link it to the place that your software wants by using command ls
ln -s /usr/local/Cellar/readline/8.0.4 /usr/local/opt/readline
Enjoy!
So Ive checked a few answers here but I dont think they can work with a vanilla Mojave mac install. Im using 10.14.4 while I did these:
get homebrew from https://brew.sh
$ brew install coreutils : this installs the gnu coreutils pkg for mac, we want the greadlink from this because macOSX's readlink is not the same as the gnu readlink. Its extremely confusing but such is the life in macland.
$ echo 'alias readlink=greadlink' >> ~/.bash_aliases I found macs readlink to be a bit lacking so I overrode the existing readlink by aliasing greadlink. (you can make this usable by all users by $ alias readlink=greadlink >> /etc/bashrc which will enable every user to be able to use it.
$ ln -s /usr/local/opt/readline/lib/libreadline.8.dylib /usr/local/opt/readline/lib/libreadline.7.dylib I linked the already linked .8. file instead of '.8.0.' file because if it were to get updated to .8.1. then my readlink wont break or miss features on the library. Im pretty sure we will format our macs before 9+ comes out.
I would recommend against manually symlink'ing native libraries. Aas of OS X 10.4, the standard include library path /usr/include is no longer used and is locked by SIP (making it difficult to move things to).
Apple ships a “legacy installer” for you to be able to install the headers in the “old location”, which will also resolve your path to correctly find headers installed via brew.
cp /Library/Developer/CommandLineTools/Packages/macOS_SDK_headers_for_macOS_10.14.pkg ~/Desktop && open ~/Desktop/macOS_SDK_headers_for_macOS_10.14.pkg`
See here for a detailed write-up on what is going on.
My problem was just the same when running lftp.
Just running brew upgrade has solved my problem, as it has updated (among others):
readline 8.0.0_1 -> 8.0.1
lftp 4.8.4 -> 4.8.4_2

rails console doesn't load due to libreadline

I have recently reinstalled ruby 2.1.2 like so since I wanted to install a gem (ruby-debug-ide)
sudo rvm reinstall 2.1.2 --disable-binary --with-gcc=gcc-4.2
Since then, I can't load my console using bundle exec rails c
due to the following error :
/Users/ohad/.rvm/gems/ruby-2.1.2#aaa/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:251:in `require': dlopen(/Users/ohad/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/x86_64-darwin13.0/readline.bundle, 9): Library not loaded: ##HOMEBREW_PREFIX##/opt/readline/lib/libreadline.6.dylib (LoadError)
Referenced from: /Users/ohad/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/x86_64-darwin13.0/readline.bundle
Tried brew uninstall readline and brew install --build-from-source readline which worked but didn't solve my problem.
Ran across this today, to solve it I did:
brew rm -f readline
brew install readline
brew link readline --force
Hope it helps.
EDIT: I recently ran into this problem again (after downgrading Ruby) since I wrote this, and I now prefer #califrench's solution from the comments below:
ln -s /usr/local/opt/readline/lib/libreadline.dylib /usr/local/opt/readline/lib/libreadline.7.dylib
Based on a comment on the accepted answer with more up-votes than the answer, this seems to be the most popular solution.
Looks like rails 4.2.6 was looking for libreadline.6 instead of libreadline. So just need to create a symlink.
ln -s /usr/local/opt/readline/lib/libreadline.dylib \
/usr/local/opt/readline/lib/libreadline.6.dylib
Hope this helps others who are still stuck!
I was able to resolve the same problem by reinstalling Ruby.
On the Homebrew side reinstalling readline (even from source) didn't help.
I'm using RVM so this sorted it for me:
rvm reinstall 2.3.1
I think Homebrew may have pulled in readline v7 recently for some other package, which I suspect could well be the culprit.
After getting a lot of positive feedback on my comment on #mauro_oto's post, I thought I'd post this as an answer:
For me cp /usr/local/opt/readline/lib/libreadline.dylib /usr/local/opt/readline/lib/libreadline.6.dylib did the trick. Looks like rails 4.2.6 was looking for libreadline.6 instead of libreadline. I probably should have symlinked it to be honest though. So ln -s /usr/local/opt/readline/lib/libreadline.dylib /usr/local/opt/readline/lib/libreadline.6.dylib is more appropriate. hope this helps others who are still stuck!
Adding gem 'rb-readline' to my Gemfile fixed this problem for me. See https://github.com/ConnorAtherton/rb-readline.
None of all this worked for me. I am using osx sierra. This what worked for me.
ln -s /usr/local/opt/readline/lib/libreadline.7.0.dylib /usr/local/opt/readline/lib/libreadline.6.dylib
Hope this helps someone out there.
My ENV: Ruby: 2.2.1, Rails: 4.2.1, macOS Sierra 10.12.4;
The below command works for me and my colleague:
ln -s /usr/local/opt/readline/lib/libreadline.7.0.dylib /usr/local/opt/readline/lib/libreadline.6.dylib
This solved my problem:
Replace libreadline.{version}.dylib with the version you are getting error for:
ln -s /usr/local/opt/readline/lib/libreadline.dylib /usr/local/opt/readline/lib/libreadline.7.dylib
On OSX using homebrew, you can specify which readline version is active. e.g.
brew switch readline 6.3.8
(it's likely installed in /usr/local/Cellar/readline/ )
I was experiencing a similar problem but with more updated versions. The error I had was:
dlopen(/Users/juanjo/.rvm/rubies/ruby-2.5.3/lib/ruby/2.5.0/x86_64-darwin18/readline.bundle, 9): Library not loaded: /usr/local/opt/readline/lib/libreadline.7.dylib (LoadError)
Referenced from: /Users/juanjo/.rvm/rubies/ruby-2.5.3/lib/ruby/2.5.0/x86_64-darwin18/readline.bundle
Reason: image not found - /Users/juanjo/.rvm/rubies/ruby-2.5.3/lib/ruby/2.5.0/x86_64-darwin18/readline.bundle
The important part is Library not loaded: /usr/local/opt/readline/lib/libreadline.7.dylib
Looking at /usr/local/opt/readline/lib/ I saw I had installed libreadline.8.dylib, not 7.
To solve my problem, guided by the other answers, I had to do the following:
ln -s /usr/local/opt/readline/lib/libreadline.8.dylib /usr/local/opt/readline/lib/libreadline.7.dylib
In other words:
ln -s /.../[libreadline you have] /.../[libreadline you need].

Lazy symbol binding failed when creating ruby db

I am trying to install ruby on rails, and everything is installed now so far, but when I try to create a database with rake db:create, I get a weird error:
dyld: lazy symbol binding failed: Symbol not found: _mysql_get_client_info
Referenced from: /Library/Ruby/Gems/1.8/gems/mysql2-0.3.11/lib/mysql2/mysql2.bundle
Expected in: flat namespace
dyld: Symbol not found: _mysql_get_client_info
Referenced from: /Library/Ruby/Gems/1.8/gems/mysql2-0.3.11/lib/mysql2/mysql2.bundle
Expected in: flat namespace
Trace/BPT trap: 5
I am working on osx mountain lion latest update. Does anyone have the right solution for me?
You might try this.
sudo gem install mysql2 — –with-mysql-config=/usr/local/mysql/bin/mysql_config
Be sure to modify the mysql config path with the location for yours.
You can determine this with the following command.
locate mysql_config
Leverage the path given with the command above.
The messge is telling that you have linked wrong version 32 vs. 64
On OSX you can see all versions on mysql installed
cd /usr/local/
and find right config in /usr/local/mysql-xxxx/bin/mysql_config
In my case it was:
gem uninstall mysql2
sudo gem install mysql2 --
--with-mysql-config=/usr/local/mysql-5.5.27-osx10.6-x86_64/bin/mysql_config
As discussed here: https://www.ruby-forum.com/topic/1440086
There are numerous questions about this and at least as many answers that work some of the time but not others. After trying most of them I noticed that the gem was 64bit and the mysql installation was 32bit.
To fix it:
install the 64 bit mysql
set up the symbolic links in /usr/local to point to the 64 bit version
set the PATH and DYLD_LIBRARY_PATH in your profile to include the correct versions
uninstall the mysql2 gem
install the mysql2 gem
ruby now plays nicely with mysql!
I haven't included the exact code as this tends to vary with your environment.
I was having a hard time with this one.. I tried all of the answers above, so I can't really pinpoint what combination resulted in the fix. I already had mysql installed and had reinstalled from mysql's website. It finally started working after I followed the bellow.
This is on Mavericks using rails 4 and brew is installed
brew install mysql
I'm not recommending this process .. Just noting that it worked for me after hours of frustration.
ln -sfv /usr/local/opt/mysql/*.plist ~/Library/LaunchAgents
launchctl load ~/Library/LaunchAgents/homebrew.mxcl.mysql.plist
sudo gem uninstall mysql
gem uninstall mysql2
gem install mysql
gem install mysql2
You need to install 64 bit MySql server. Don't forget to re-install mysql gem.
I had two versions of mysql installed (32 & 64 bit) for some reason.
Make sure your $MYSQL environmental variable (most likely found in ~/.bash_profile or ~/.profile) is pointing at the 64 bit version.
Also make sure you point towards the correct the mysql install when your installing the gem as the other answers have mentioned.
I had same problem. mysql2 version was 0.4.9, downgraded it to 0.4.5 and problem solved

Rails server won't start on Mountain Lion [duplicate]

I've been struggling with this for some time.
I've installed Rails 3, gem, mysql on my Snow Leopard machine. All was going well until I created my first project and tried to run
rails server
Upon running this I get:
jontybrook$ rails server
/Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle: dlopen(/Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle, 9): Library not loaded: libmysqlclient.16.dylib (LoadError)
Referenced from: /Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle
Reason: image not found - /Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle
from /Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2.rb:7
from /Library/Ruby/Gems/1.8/gems/bundler-1.0.7/lib/bundler/runtime.rb:64:in `require'
from /Library/Ruby/Gems/1.8/gems/bundler-1.0.7/lib/bundler/runtime.rb:64:in `require'
from /Library/Ruby/Gems/1.8/gems/bundler-1.0.7/lib/bundler/runtime.rb:62:in `each'
from /Library/Ruby/Gems/1.8/gems/bundler-1.0.7/lib/bundler/runtime.rb:62:in `require'
from /Library/Ruby/Gems/1.8/gems/bundler-1.0.7/lib/bundler/runtime.rb:51:in `each'
from /Library/Ruby/Gems/1.8/gems/bundler-1.0.7/lib/bundler/runtime.rb:51:in `require'
from /Library/Ruby/Gems/1.8/gems/bundler-1.0.7/lib/bundler.rb:112:in `require'
from /Users/jontybrook/Dropbox/CODING/simple_cms/config/application.rb:7
from /Library/Ruby/Gems/1.8/gems/railties-3.0.3/lib/rails/commands.rb:28:in `require'
from /Library/Ruby/Gems/1.8/gems/railties-3.0.3/lib/rails/commands.rb:28
from /Library/Ruby/Gems/1.8/gems/railties-3.0.3/lib/rails/commands.rb:27:in `tap'
from /Library/Ruby/Gems/1.8/gems/railties-3.0.3/lib/rails/commands.rb:27
from script/rails:6:in `require'
from script/rails:6
jontybrook$
As far as I can tell the problem is with the mysql2 gem. MySQL seems to be running fine and my Gemfile references mysql2, my database.yml file seems ok also.
The error mentions
Reason: image not found - /Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle
And yet
jontybrook$ cd /Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2
jontybrook$ ls
client.rb em.rb error.rb mysql2.bundle result.rb
MySQL2.bundle is there!?
If I use the old mysql gem, WEBrick boots fine. But that's not ideal, is it?
I've tried everything google can give me! Any help much appreciated.
I was never able to get any of these answers to work for me, but this is the command that I used to make it work for me. This way you don't need to use install_name_tool every time you update your mysql
sudo ln -s /usr/local/mysql/lib/libmysqlclient.18.dylib /usr/lib/libmysqlclient.18.dylib
I have solved this, eventually!
I re-installed Ruby and Rails under RVM. I'm using Ruby version 1.9.2-p136.
After re-installing under rvm, this error was still present.
In the end the magic command that solved it was:
sudo install_name_tool -change libmysqlclient.16.dylib /usr/local/mysql/lib/libmysqlclient.16.dylib ~/.rvm/gems/ruby-1.9.2-p136/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle
This fix worked very well for me:
Add the following to to your ~/.profile
export DYLD_LIBRARY_PATH=/usr/local/mysql/lib:$DYLD_LIBRARY_PATH
http://www.rickwargo.com/2010/12/16/installing-mysql-5-5-on-os-x-10-6-snow-leopard-and-rails-3/
For me this was just because I had upgraded mysql but hadn't updated the mysql2 gem - a reinstall of the gem will fix it...
gem pristine mysql2
I have the same issue. It looks like it's unable to find the libmysqlclient library. A temporary fix that has worked for me is the following:
export DYLD_LIBRARY_PATH=/usr/local/mysql/lib/
I am not sure where the config is specifying the load path or what it's set to but my mysql install did not appear to be in it. I'll post again if I find a more permanent solution.
Edit:
Actually this fix appears to more accurately address the problem.
Add the below to your ~/.bash_profile:
export DYLD_LIBRARY_PATH=/usr/local/mysql/lib:$DYLD_LIBRARY_PATH
This worked for me
In OSX El Capitan update when you do this:
sudo ln -s /usr/local/mysql/lib/libmysqlclient.18.dylib /usr/lib/libmysqlclient.18.dylib
it throws an error like
ln: /usr/lib/libmysqlclient.18.dylib: Operation not permitted
So to avoid this, what you can do is first locate libmysqlclient.18.dylib using the command
User$ locate libmysqlclient.18.dylib
In my case it returned /usr/local/mysql-5.5.24-osx10.5-x86_64/lib/libmysqlclient.18.dylib
So instead of usr/lib/ we will create symlink to usr/local/lib/ like this :
sudo ln -s /usr/local/mysql/lib/libmysqlclient.18.dylib /usr/local/lib/libmysqlclient.18.dylib
More details : https://forums.developer.apple.com/thread/7935
following lines works for me. I am using mac 10.7.2 .
sudo ln -s /usr/local/mysql/lib/libmysqlclient.18.dylib /usr/lib/libmysqlclient.18.dylib
Just ran into this problem. All I had to do is uninstall mysql2 gem and reinstall it. Hope this works for other people
This is how it worked for me:
I ran the below command
sudo install_name_tool -change libmysqlclient.18.dylib /usr/local/mysql/lib/libmysqlclient.18.dylib ~/.rvm/gems/ruby-1.9.2-p180/gems/mysql2-0.2.7/lib/mysql2/mysql2.bundle
My environments:
$ rails -v
Rails 3.0.6
$ mysql --version
mysql Ver 14.14 Distrib 5.5.11, for osx10.6 (i386) using readline 5.1
$ ruby -v
ruby 1.9.2p180 (2011-02-18 revision 30909) [x86_64-darwin10.7.0]
Hope this helps someone.
Thanks, Ogapo! Exporting that alias worked for me, and then I followed the link, and in my case the mysql2.bundle was up in /Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle so I adjusted the install_name_tool to modify that bundle rather than one in ~/.rvm and got that working the way it should be done.
So now:
$ otool -L /Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle
/Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle:
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/libruby.1.dylib (compatibility version 1.8.0, current version 1.8.7)
/usr/local/mysql/lib/libmysqlclient.16.dylib (compatibility version 16.0.0, current version 16.0.0)
/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 125.2.1)
hi it worked for me from the recommended link from Fredy Andersen
sudo install_name_tool -change libmysqlclient.16.dylib /usr/local/mysql /lib/libmysqlclient.16.dylib /Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle
just had to change to my version of mysql, in the command,
thanks
I solved this problem by deleting my gemset for my current project and recreating it and rerunning bundle install. I think I caused it by installing a newer version of mysql.
I had this issue when working with Django, I use brew to install a lot of my Open Source programs and I needed to do the following since I used brew to install mysql:
sudo ln -s /usr/local/Cellar/mysql/5.5.20/lib/libmysqlclient.18.dylib /usr/lib/libmysqlclient.18.dylib
Be sure to replace with your version of the libraries!
bundle install mysql --force helped me. It reinstalled dependencies which ware gone as a result of brew uninstall mysql.
Jonty, I'm struggling with this too.
I think there's a clue in here:
otool -L /Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle
/Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle:
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/libruby.1.dylib (compatibility version 1.8.0, current version 1.8.7)
libmysqlclient.16.dylib (compatibility version 16.0.0, current version 16.0.0)
/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 125.2.1)
Notice the path to the dylib is, uh, rather short?
I'm trying to figure out where the gem install instructions are leaving off the dylib path, but it's slow going as I have never built a gem myself.
I'll post more if I find more!
I've had this exact same problem a few days ago. I eventually managed to solve it. I'm not quite sure how, but I'll tell you what I did anyway. Maybe it'll help you.
I started by downloading RVM. If you aren't using it yet, I highly recommend doing so. It basically creates a sandbox for a new separate installation of Ruby, RoR and RubyGems. In fact, you can have multiple installations simultaneously and instantly switch to one other. It works like a charm.
Why is this useful? Because you shouldn't mess with the default Ruby installation in OS X. The system depends on it. It's best to just leave the default Ruby and RoR installation alone and create a new one using RVM that you can use for your own development.
Once I created my separate Ruby installation, I just installed RoR, RubyGems and mysql, and it worked. For the exact steps I took, see my question: Installing Rails, MySQL, etc. everything goes wrong
Again: I don't know for certain this will solve your problem. But it certainly did the trick for me, and in any case using RVM is highly recommendable.
I still found that with the solutions above, it didn't work (for example) with the Rails plugin for TextMate. I got a similar error (when retrieving the database schema).
So what did is, open terminal:
cd /usr/local/lib
sudo ln -s ../mysql-5.5.8-osx10.6-x86_64/lib/libmysqlclient.16.dylib .
Replace mysql-5.5.8-osx10.6-x86_64 with your own path (or mysql).
This makes a symbol link to the lib, now rails runs from the command line, as-well as TextMate plugin(s) like ruby-on-rails-tmbundle.
To be clear: this also fixes the error you get when starting rails server.
This usually happen when you upgrade mysql. The installed mysql2 gem which was built on the old mysql libs cannot work with new libs. Just need to reinstall it.
Uninstall mysql2 with gem uninstall mysql2. Then install it with gem install mysql2
I've resolved it by creating .rvmrc file in my project folder containg:
rvm use <yourrubie>
then entering my project path
cd ~/myprojectpath
then I run
bundle install
My version of luvlss's command:
Mac OSX 10.10.5
MySQL 5.6.27
Passenger 5.0.21
sudo ln -s /usr/local/mysql-5.6.27-osx10.8-x86_64/lib/libmysqlclient.18.dylib /usr/lib/libmysqlclient.18.dylib
If you're trying lots of different links, like I did, do some clean-up with:
sudo unlink /usr/lib/libmysqlclient.18.dylib
Open a Terminal and run the following:
export PATH=$PATH:/usr/local/mysql/bin
It should work.
If you're using OSX and installed mysql using brew, you can:
brew link mysql
If you're having trouble with the version (I had mysql 5.7 running while my gem required 5.6.25), you can
brew unlink mysql
brew switch mysql 5.6.25
For me I had to manually uninstall mysql
brew uninstall mysql
rm -rf /usr/local/var/mysql
brew install mysql

Getting a "bad interpreter" error when using brew

I'm getting this error when I try to run any brew command.
Holger-Sindbaeks-MacBook-Air:~ holgersindbaek$ brew help
-bash: /usr/local/bin/brew: /usr/bin/ruby: bad interpreter: No such file or directory
I have absolutely no idea on how to fix this and been searching for a long time without answer.
I got this error (much the same):
/usr/local/bin/brew: /usr/local/Library/brew.rb: /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby: bad interpreter: No such file or directory
/usr/local/bin/brew: line 26: /usr/local/Library/brew.rb: Undefined error: 0
and fixed by the solution below:
Open brew.rb:
$ sudo vim /usr/local/Library/brew.rb
Change the first line's 1.8 to Current:
Before:
#!/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby -W0
After:
#!/System/Library/Frameworks/Ruby.framework/Versions/Current/usr/bin/ruby -W0
Then brew works for me. Hope it helps if any other one got this issue. :)
If you get the error
Homebrew requires Leopard or higher. For Tiger support, see:
https://github.com/mistydemeo/tigerbrew
change the MACOS check from <10.5 to <10.
Tip by #TimCastelijns:
10.5 doesn't work because in comparison, it's higher than 10.10 (.1 vs .5). I added a check (and MACOS_VERSION != 10.10) instead of lowering from 10.5 to 10.
What you are getting means that Homebrew has not been able to locate the Ruby interpretter at the specified location.
Install Apple Developer Kit (comes with Xcode) which should be available to you as an optional install (or you can simply download it from Apple). This will install the Ruby interpreter for you.
In case you already have Xcode installed, this means that one of these things is happening:
You have a broken Ruby installation
You have more than one Ruby installation
Your installation has not been configured properly.
To identify if this is the first case, you can run ruby and see if you get any response.
If you don't, your installation is broken and you need to reinstall it. If you do, you then run which ruby. This should give you the absolute path to your Ruby executable. If this is anything other than /usr/bin/ruby then homebrew (and a bunch of other programs) will not be able to find it.
In case you have not ever tampered with your Ruby installation, you can check to see if /usr/bin/ruby already exists or not: cat /usr/bin/ruby. If you get No such file or directory, then you can easily create a symbolic link to your Ruby installation. Assuming the output of which ruby to by /usr/local/bin/ruby, you create the symbolic link this way: sudo ln -s /usr/local/bin/ruby /usr/bin/ruby and all should be well.
If there is a file at that location, you can run file /usr/bin/ruby to see if it's a real file, a symbolic link, or a corrupted file. If it is a symbolic link, your installation should be working, and since it's not, it probably is either a corrupted symlink or it's a bogus file.
You can remedy that by first deleting it (sudo rm /usr/bin/ruby) and then creating a new symlink to the correct location (sudo ln -s /usr/local/bin/ruby /usr/bin/ruby).
If non of the above works, you should consult the homebrew team after a clean install of Xcode and removing any traces of a Ruby installation on your system.
EDIT
Alternatively, as pointed out by the other answers, the issue might be because of a bad ruby version in your Homebrew settings.
A quick fix might be updating your Homebrew:
cd /usr/local
git pull -q origin refs/heads/master:refs/remotes/origin/master
If this does not help, you might want to get your hands dirty and manually fix the problem by:
Editing brew.rb from /user/local/Library/brew.rb
Changing /1.8/ to /Current/ in the first line, which will cause the hashbang to point to the current Ruby version as the executor
If this does not help, either, you can also modify the MACOS check and change it from 10.5 to 10 to avoid the infamous "Homebrew requires Leopard or higher" error.
DISCLAIMER
A bunch of thanks to other contributors in the answers below and their commenters. I am not committing plagiarism, simply aggregating the answers into one integrated article to help others.
Fix:
sudo gem install cocoapods
At the risk of oversimplifying things, try running
gem install bundler
I was transitioning my Ruby environment from RBENV to RVM and it worked for me.
This happened because I needed to update brew - in the updated version it already uses Current ruby
cd /usr/local
git pull -q origin refs/heads/master:refs/remotes/origin/master
This solved the problem
You need to change the path for Ruby.Framework
I solved it with commands as mentioned.
brew install cocoapods --build-from-source
brew link --overwrite cocoapods
If you have a lower version below Xcode 11, you have to remove it before you use the above commands.
Reference: Ruby Framework issue
None of the above worked for me, so I kept browsing and found this answer,
https://stackoverflow.com/a/24225960/1359088
which did fix brew for me. He says in step 1 to install XCode 6 command line tools, but doesn't say how; use this command:
xcode-select --install
I got the same issue when updated to MacOSX High Sierra & using Xcode 9 with that. High Sierra update ruby gem to version 2.3 but xcpreety command of Xcode 9 still using Ruby 2.0 which is unable to find now & gives bad interpreter.
Just go to Terminal & run
sudo gem install xcpretty
Restart Xcode & do fresh clean build it works for me.
Hope it helps!!!
After upgrading to macOS High Sierra, get it fixed with following commands:
sudo gem install cocoapods
In my case seems like fastlane installed incorrectly with brew install fastlane system didn't write correct path to fastlane. I fixed it with alias fastlane=~/.fastlane/bin/fastlane
I solved it with commands as mentioned.
1.) Uninstall your GEM.
gem unistall GEM
2.) Then Install your GEM.
sudo gem install GEM -n /usr/local/bin
I got bad interpreter: No such file or directory error when used xcpretty and xcpretty-travis-formatter on upgraded MacOS.
To solve it
gem install xcpretty
gem install xcpretty-travis-formatter
That is why I can recommend you to reinstall failed component gem install <name>
#For example error looks like
/usr/local/bin/xcpretty-travis-formatter: /System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/bin/ruby: bad interpreter: No such file or directory
#use
gem install xcpretty-travis-formatter

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