Fetching: rpam-1.0.1.gem (100%)
Building native extensions.  This could take a while...
ERROR:  Error installing rpam:
	ERROR: Failed to build gem native extension.

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


Gem files will remain installed in /usr/local/share/gems/gems/rpam-1.0.1 for inspection.
Results logged to /usr/local/share/gems/gems/rpam-1.0.1/ext/Rpam/gem_make.out