Error during installing gem named mysql2

dubstep · March 14, 2011, 9:28am

hello everyone,
*
*
*im getting this error when im installing a gem via command prompt *
can any one help me out? please
*
*
thanks.
*
*
C:>gem i mysql2
Temporarily enhancing PATH to include DevKit…
Building native extensions. This could take a while…
ERROR: Error installing mysql2:

   ERROR: Failed to build gem native extension.*

```
   C:/Ruby192/bin/ruby.exe extconf.rb*
```

checking for rb_thread_blocking_region()… yes
checking for main() in -llibmysql… 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=C:/Ruby192/bin/ruby*
```
```
   --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-libmysqllib*
```
```
   --without-libmysqllib*
```

Gem files will remain installed in
C:/Ruby192/lib/ruby/gems/1.9.1/gems/mysql2-0.
2.6 for inspection.
Results logged to
C:/Ruby192/lib/ruby/gems/1.9.1/gems/mysql2-0.2.6/ext/mysql2/ge
m_make.out

salim_mandrekar · March 14, 2011, 10:43am

i even tried installing gem mysql2 but im getting a error which i’m nt
able
to retify it… following is the error

C:>gem i mysql2
Temporarily enhancing PATH to include DevKit…
Building native extensions. This could take a while…
ERROR: Error installing mysql2:

   ERROR: Failed to build gem native extension.*

```
   C:/Ruby192/bin/ruby.exe extconf.rb*
```

checking for rb_thread_blocking_region()… yes
checking for main() in -llibmysql… 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=C:/Ruby192/bin/ruby*
```
```
   --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-libmysqllib*
```
```
   --without-libmysqllib*
```

Gem files will remain installed in
C:/Ruby192/lib/ruby/gems/1.9.1/gems/mysql2-0.
2.4 for inspection.
Results logged to
C:/Ruby192/lib/ruby/gems/1.9.1/gems/mysql2-0.2.4/ext/mysql2/ge
m_make.out
*
*
-------------------------------------

salim_mandrekar · March 14, 2011, 11:54am

On Mar 14, 2011, at 4:11 AM, salim mandrekar [email protected]
wrote:

checking for main() in -llibmysql… no
–with-opt-lib
–with-mysql-lib
–without-mysql-lib=${mysql-dir}/lib
–with-libmysqllib
–without-libmysqllib

Gem files will remain installed in C:/Ruby192/lib/ruby/gems/1.9.1/gems/mysql2-0.
2.4 for inspection.
Results logged to C:/Ruby192/lib/ruby/gems/1.9.1/gems/mysql2-0.2.4/ext/mysql2/ge
m_make.out

Try to build it with native extensions…
gem install mysql2 --platform=ruby

B.

salim_mandrekar · March 15, 2011, 12:05pm

thanks sir. it worked…