Gem can't be installed on Raspberry about balboa_worldwide_app

[JochenKoehler69]

I found the solution on my own :-)
To be able to build the gem native extensions an additional package "ruby-dev" has to be installed:

sudo apt-get install ruby-dev.

With this installed, the installation of balboa_worldwide_app worked fine.

Thanks

[JochenKoehler69]

I investigated a bit more and installed "rake" separately - then I get this error message:

root@loxberry:/opt/loxberry# gem install balboa_worldwide_app
Building native extensions. This could take a while...
ERROR:  Error installing balboa_worldwide_app:
        ERROR: Failed to build gem native extension.

    current directory: /var/lib/gems/2.5.0/gems/digest-crc-0.6.4/ext/digest
/usr/bin/ruby2.5 -rrubygems /var/lib/gems/2.5.0/gems/rake-13.0.6/exe/rake RUBYARCHDIR=/var/lib/gems/2.5.0/extensions/arm-linux/2.5.0/digest-crc-0.6.4 RUBYLIBDIR=/var/lib/gems/2.5.0/extensions/arm-linux/2.5.0/digest-crc-0.6.4
mkmf.rb can't find header files for ruby at /usr/lib/ruby/include/ruby.h

rake failed, exit code 1

Gem files will remain installed in /var/lib/gems/2.5.0/gems/digest-crc-0.6.4 for inspection.
Results logged to /var/lib/gems/2.5.0/extensions/arm-linux/2.5.0/digest-crc-0.6.4/gem_make.out

[EricAgostinelli]

This is great to know! I too have had a terrible time trying to get this to work on a Pi. I will have to try this myself. Thanks @JochenKoehler69