innersund
commented
10 months ago The solution was closer than I thought, just follow the instruction for installing rmagick on Ubuntu: https://github.com/rmagick/rmagick?tab=readme-ov-file#installing-rmagick
Description
Install gruff fails due to missing dependencies. Diagnostic output is to no help.
$ sudo gem install rmagick Building native extensions. This could take a while... ERROR: Error installing rmagick: ERROR: Failed to build gem native extension.
[... long list of not very helpful messages ...] checking for brew... no checking for pacman... no checking for Ruby version >= 2.3.0... yes extconf.rb failed
$ sudo gem install gruff Building native extensions. This could take a while...
[similar list of messages]
[content of mkmf.log] $ cat /var/lib/gems/3.0.0/extensions/x86_64-linux/3.0.0/rmagick-5.3.0/mkmf.log find_executable: checking for brew... -------------------- no -------------------- find_executable: checking for pacman... -------------------- no -------------------- assert_minimum_ruby_version!: checking for Ruby version >= 2.3.0... -------------------- yes --------------------
System Configuration
$ identify --version Version: ImageMagick 6.9.11-60 Q16 x86_64 2021-01-25 https://imagemagick.org
$ cat //etc/os-release PRETTY_NAME="Ubuntu 22.04.3 LTS"
Solution
After extensive search I stumbled upon the solution on https://stackoverflow.com/questions/4899376/installing-rmagick-gem
$ sudo apt install libmagickwand-dev ... 63 new packages ...
then $ sudo gem install rmagick Building native extensions. This could take a while... Successfully installed rmagick-5.3.0
$ sudo gem install gruff Successfully installed histogram-0.2.4.1 Successfully installed gruff-0.23.0
Maybe make a note of this in the documentation on how to install gruff? And please excuse me if I have made formal mistakes in my publishing, I am a newbee on Github.