# Issue while installing mysql gem

**URL:** <https://www.ruby-forum.com/t/issue-while-installing-mysql-gem/174023>\
**Category:** Rails\
**Created:** [August 19, 2009, 4:23pm UTC](https://www.ruby-forum.com/t/issue-while-installing-mysql-gem/174023 "2009-08-19T16:23:38Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![Rajeswar\_reddy\_G](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/8c91f0/32.png) [@Rajeswar\_reddy\_G](https://www.ruby-forum.com/u/Rajeswar_reddy_G)\
**Post date:** [August 19, 2009, 4:23pm UTC](https://www.ruby-forum.com/t/issue-while-installing-mysql-gem/174023/1 "2009-08-19T16:23:38Z")

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Hi All,

I am getting below issue while installing mysql gem on my windows  
machine. Please help to resolve this issue.

C:\Documents and Settings\Raj\>gem install mysql  
Building native extensions. This could take a while…  
ERROR: Error installing mysql:  
ERROR: Failed to build gem native extension.

C:/Ruby19/bin/ruby.exe extconf.rb  
checking for mysql\_query() in -lmysqlclient… \*\*\* 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=C:/Ruby19/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  
C:/Ruby19/lib/ruby/1.9.1/mkmf.rb:362:in `try_do': The complier failed to generate an executable file. (RuntimeError) You have to install development tools first. from C:/Ruby19/lib/ruby/1.9.1/mkmf.rb:415:in`try\_link0’  
from C:/Ruby19/lib/ruby/1.9.1/mkmf.rb:419:in `try_link' from C:/Ruby19/lib/ruby/1.9.1/mkmf.rb:527:in`try\_func’  
from C:/Ruby19/lib/ruby/1.9.1/mkmf.rb:748:in `block in find_library' from C:/Ruby19/lib/ruby/1.9.1/mkmf.rb:668:in`block in checking\_for’  
from C:/Ruby19/lib/ruby/1.9.1/mkmf.rb:274:in `block (2 levels) in postpone' from C:/Ruby19/lib/ruby/1.9.1/mkmf.rb:248:in`open’  
from C:/Ruby19/lib/ruby/1.9.1/mkmf.rb:274:in `block in postpone' from C:/Ruby19/lib/ruby/1.9.1/mkmf.rb:248:in`open’  
from C:/Ruby19/lib/ruby/1.9.1/mkmf.rb:270:in `postpone' from C:/Ruby19/lib/ruby/1.9.1/mkmf.rb:667:in`checking\_for’  
from C:/Ruby19/lib/ruby/1.9.1/mkmf.rb:744:in `find_library' from extconf.rb:14:in`’

---

<div class="post-metadata">

**Author:** ![Rajeswar\_reddy\_G](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/8c91f0/32.png) [@Rajeswar\_reddy\_G](https://www.ruby-forum.com/u/Rajeswar_reddy_G)\
**Post date:** [August 19, 2009, 9:58pm UTC](https://www.ruby-forum.com/t/issue-while-installing-mysql-gem/174023/2 "2009-08-19T21:58:58Z")

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I have the same error, while I’m trying to make gem install rails…

can someone help please??

Thanks!

On Aug 19, 8:23 am, Rajeswar reddy Gaulla \<rails-mailing-l…@andreas-