MySQL Install ERROR Failed to build gem native extension

Question

I m trying to get MySQL installed to the latest version due to some installation going wrong somewhere along the line   I run the command gem install mysql and I receive the following      Building native extensions   This   could take a while    ERROR   Error   installing mysql      ERROR  Failed to   build gem native extension        System Library Frameworks Ruby framework Versions 1 8 usr bin ruby   extconf rb extconf rb 4  warning    Insecure world writable dir  usr bin   in PATH  mode 040777 extconf rb 4    warning  Insecure world writable dir    usr bin in PATH  mode 040777   extconf rb 7  warning  Insecure world   writable dir  usr bin in PATH  mode   040777 mkmf rb can t find header files   for ruby at    System Library Frameworks Ruby framework Versions 1 8 usr lib ruby ruby h      Gem files will remain installed in    Library Ruby Gems 1 8 gems mysql-2 8 1   for inspection  Results logged to    Library Ruby Gems 1 8 gems mysql-2 8 1 ext mysql api gem make out   I ve searched  and tried a whole host of things  from installing specific versions to trying to reinstall ruby without any luck   Any ideas where I may be going wrong   I m trying to get MySQL installed to the latest version due to some installation going wrong somewhere along the line   I run the command gem install mysql and I receive the following      Building native extensions   This   could take a while    ERROR   Error   installing mysql      ERROR  Failed to   build gem native extension        System Library Frameworks Ruby framework Versions 1 8 usr bin ruby   extconf rb extconf rb 4  warning    Insecure world writable dir  usr bin   in PATH  mode 040777 extconf rb 4    warning  Insecure world writable dir    usr bin in PATH  mode 040777   extconf rb 7  warning  Insecure world   writable dir  usr bin in PATH  mode   040777 mkmf rb can t find header files   for ruby at    System Library Frameworks Ruby framework Versions 1 8 usr lib ruby ruby h      Gem files will remain installed in    Library Ruby Gems 1 8 gems mysql-2 8 1   for inspection  Results logged to    Library Ruby Gems 1 8 gems mysql-2 8 1 ext mysql api gem make out   I ve searched  and tried a whole host of things  from installing specific versions to trying to reinstall ruby without any luck   Any ideas where I may be going wrong   EDIT  I installed XCode off my Snow Leopard DVD and the error just changed slightly to the following      Building native extensions   This could take a while      ERROR   Error installing mysql      ERROR  Failed to build gem native extension        System Library Frameworks Ruby framework Versions 1 8 usr bin ruby extconf rb   extconf rb 4  warning  Insecure world writable dir  usr bin in PATH  mode 040777   extconf rb 4  warning  Insecure world writable dir  usr bin in PATH  mode 040777   extconf rb 7  warning  Insecure world writable dir  usr bin in PATH  mode 040777   extconf rb 17  warning  Insecure world writable dir  usr bin in PATH  mode 040777   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  System Library Frameworks Ruby framework Versions 1 8 usr 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      Gem files will remain installed in  Library Ruby Gems 1 8 gems mysql-2 8 1 for inspection    Results logged to  Library Ruby Gems 1 8 gems mysql-2 8 1 ext mysql api gem make out   doing  which mysql  on the command line returns nothing  which means it s not recognizing it   I also installed the MySQL system preferences option  and I can t stop MySQL from running   Now I m completely stuck as what to do   EDIT EDIT  I ve just completely reinstalled MySQL using this guide http   hivelogic com articles installing-mysql-on-mac-os-x  Unfortunately this didn t work either  I still receive the same errors   I can t even do mysql -uroot at the command line  I get the error of    ERROR 2002  HY000   Can t connect to local MySQL server through socket   tmp mysql sock   2   So I think I ve tried everything     SOLVED   Sorry guys  the reason for this not working was because of the MySQL paths   I ve blogged on it here  http   www kieransenior co uk 2010 02 mysql-cant-connect-using-ruby-on-rails-mac-os-x-snow-leopard

User · Answer

I had a similar experience  so here are the things that I tried  Firstly  I tried to install  mysql s required packages by running the command below in my terminal  sudo apt-get install build-essential libmysqlclient-dev   Secondly  I tried updating rubygems on my system by running the command below in my terminal  sudo gem update --system   But I was still experiencing the same issue  After much research I realized that I was using an almost out-of-date version of the mysql gem  I simply needed to use the mysql2 gem  mysql2 gem and not the mysql gem  so I fixed it by running the command below in my terminal  gem install mysql2   This worked fine for me  Before running the last command  ensure that you ve ran the first and second commands to be sure that everything is fine on your system   That s all   I hope this helps

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I had also forgotten to actually install MySQL in the first place  Following this guide helped a lot   http   www djangoapp com blog 2011 07 24 installation-of-mysql-server-on-mac-os-x-lion   As well as adding these lines to my  profile   export PATH   usr local mysql bin  PATH  alias mysql  usr local mysql bin mysql alias mysqladmin  usr local mysql bin mysqladmin

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Attention  You need to specify -- key  and than --with-mysql-config  usr local mysql bin mysql config

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Installing the mysql gem on OSX  in a terminal   First do a    locate mysql config    and then replace the path in the following command with where that file is     sudo gem install mysql --       with-mysql-config  usr local mysql bin mysql config Building native extensions  This could take a while    Successfully installed mysql-2 7 1 gem installed

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if you are installing from source here is a tutorial would be happy if it helps http   raihan90 blogspot com 2009 03 mysql-step-by-step-hacking-into-mysql html

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you can try to reinstall the latest version of xcode   dev  tools for snow leopard - this should fix your errors

User · Answer

In order to resolve     Gem  Ext  BuildError  ERROR  Failed to build gem native extension   error for mysql2        I think libmysql-ruby got changed with    ruby-mysql   Simply try with following commands   sudo apt-get install ruby-mysql   amp  then  sudo apt-get install libmysqlclient-dev

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First of all you need to differentiate between the MySQL as Server  MySQL as Client and the Ruby bindings to MySQL   I m not familiar with Mac  but for  nix OS you need to install MySQL through your package manager  To get the Ruby bindings installed with   gem install mysql   you need the development headers of ruby  in Ubuntu it is the package ruby-dev  and the development headers of the MySQL-Client  currently libmysqlclient16-dev in Ubuntu   I don t know if they are named different on Mac  but after you got those installed the Ruby bindings should install without any error

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If you use Percona Mysql server    yum install Percona-Server-devel-55    gem install mysql

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yum -y install gcc mysql-devel ruby-devel rubygems gem install mysql2

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A number of people found this post helpful   Also  I needed to do first type this   yum install mysql-devel   and then    gem install mysql    For some people you may need to type    gem install mysql -- --with-mysql-config  usr local mysql mysql config

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On Debian  or Ubuntu  systems  just install libmysqlclient-dev package using   sudo apt-get install libmysqlclient-dev   and then   gem install mysql   It will be installed without any error

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Your Ubuntu OS need to install library for mysql client sudo apt-get install libmysqlclient-dev  After That just install bundle or bundle install

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on OSX mountain Lion  If you have brew installed  then brew install mysql and follow the instructions on creating a test database with mysql on your machine  You don t have to go all the way through  I didn t need to After I did that I was able to bundle install and rake

[mysql] MySQL Install: ERROR: Failed to build gem native extension

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