installing ruby gems on opensuse runs into issues .. need help

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hello dear linux experts

 

while installing ruby-gems i run into issues

 

Code:

linux-70ce:/home/martin/perl # ^C

linux-70ce:/home/martin/perl # gem install mysql2

Fetching: mysql2-0.3.16.gem (100%)

Building native extensions. This could take a while...

ERROR: Error installing mysql2:

ERROR: Failed to build gem native extension.

 

/usr/bin/ruby2.0 extconf.rb

mkmf.rb can't find header files for ruby at /usr/lib/ruby/include/ruby.h

 

 

Gem files will remain installed in /usr/lib/ruby/gems/2.0.0/gems/mysql2-0.3.16 for inspection.

Results logged to /usr/lib/ruby/gems/2.0.0/gems/mysql2-0.3.16/ext/mysql2/gem_make.out

linux-70ce:/home/martin/perl # ^C

linux-70ce:/home/martin/perl # ^C

linux-70ce:/home/martin/perl # ^C

linux-70ce:/home/martin/perl # gem install sequel

 

Fetching: sequel-4.11.0.gem (100%)

Successfully installed sequel-4.11.0

Parsing documentation for sequel-4.11.0

Installing ri documentation for sequel-4.11.0

1 gem installed

linux-70ce:/home/martin/perl #

linux-70ce:/home/martin/perl # gem install mysql

Fetching: mysql-2.9.1.gem (100%)

Building native extensions. This could take a while...

ERROR: Error installing mysql:

ERROR: Failed to build gem native extension.

 

/usr/bin/ruby2.0 extconf.rb

mkmf.rb can't find header files for ruby at /usr/lib/ruby/include/ruby.h

 

 

Gem files will remain installed in /usr/lib/ruby/gems/2.0.0/gems/mysql-2.9.1 for inspection.

Results logged to /usr/lib/ruby/gems/2.0.0/gems/mysql-2.9.1/ext/mysql_api/gem_make.out

linux-70ce:/home/martin/perl #

i have no glue what happens here

 

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