Rmagick initilzation error: cannot load such file -- rvg/rvg - ruby

Question

I am using Ubuntu 20.0.4. Ruby version is:
ruby 2.7.2p137 (2020-10-01 revision 5445e04352) [x86_64-linux]
Gem version is:
gem --version
3.1.4
I have installed imagemagick:
convert --version
Version: ImageMagick 6.9.10-23 Q16 x86_64
Then I installed required packages:
sudo apt-get install libmagickwand-dev
And then I installed Rmagick:
sudo gem install rmagick
Building native extensions. This could take a while...
Successfully installed rmagick-4.2.6
Parsing documentation for rmagick-4.2.6
Done installing documentation for rmagick after 0 seconds
1 gem installed
This shows that rmagick is installed but once I try to run command:
ruby pheno_gram.rb -i phenogram-sample.txt -g human_genome.txt -Y cytoBand-human.txt -c exhaustive -p proximity -f png -p equal -o plot_phenogram -t "New Image"
I get msg:
cannot load such file -- rvg/rvg
Please install RMagick -- See documentation for pheno_gram or http://rmagick.rubyforge.org/install-faq.html
It seems that I need to install ruby rvg library,so I tried to install it using command:
sudo snap install hello-rvg --candidate
But still getting same error. Secodly, Do I need to add rmagick path somewhere, if yes how can I do that?
I have also tried to install rmagick without sudo but it gives error:
gem install rmagick
Building native extensions. This could take a while...
ERROR: Error installing rmagick:
ERROR: Failed to build gem native extension.
current directory: /home/super/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/rmagick-4.2.6/ext/RMagick
/home/super/.rbenv/versions/2.7.2/bin/ruby -I /home/super/.rbenv/versions/2.7.2/lib/ruby/2.7.0 -r ./siteconf20220827-10097-72cju5.rb extconf.rb
checking for brew... no
checking for pacman... yes
checking for Ruby version >= 2.3.0... yes
checking for pkg-config... yes
checking for outdated ImageMagick version (<= 6.7.7)... no
checking for /home/super/miniconda3/bin/x86_64-conda-linux-gnu-cc... yes
*** 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=/home/super/.rbenv/versions/2.7.2/bin/$(RUBY_BASE_NAME)
/home/super/.rbenv/versions/2.7.2/lib/ruby/2.7.0/mkmf.rb:471:in `try_do': The compiler failed to generate an executable file. (RuntimeError)
You have to install development tools first.
from /home/super/.rbenv/versions/2.7.2/lib/ruby/2.7.0/mkmf.rb:564:in `try_link0'
from /home/super/.rbenv/versions/2.7.2/lib/ruby/2.7.0/mkmf.rb:582:in `try_link'
from extconf.rb:79:in `configure_compile_options'
from extconf.rb:19:in `initialize'
from extconf.rb:405:in `new'
from extconf.rb:405:in `<main>'
To see why this extension failed to compile, please check the mkmf.log which can be found here:
/home/super/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/extensions/x86_64-linux/2.7.0/rmagick-4.2.6/mkmf.log
extconf failed, exit code 1
Gem files will remain installed in /home/super/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/rmagick-4.2.6 for inspection.
Results logged to /home/super/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/extensions/x86_64-linux/2.7.0/rmagick-4.2.6/gem_make.out
Any help will be highly appreciated.

Answer 1

It seems your problem is associated with your user role.
brute force possible solution: use sudo for running sudo ruby pheno_gram.rb -i phenogram-sample.txt -g human_genome.txt -Y cytoBand-human.txt -c exhaustive -p proximity -f png -p equal -o plot_phenogram -t "New Image"
check these out:
did you install your ruby with sudo user?
did you check what is ruby installation folder ownership? and your user are added to owner group?
with cmd sudo usermod -a -G <GROUP> $USER