I am trying to install iStats via a ruby gem.
First I ran the command:
xcode-select --install and the output was:
xcode-select: error: command line tools are already installed, use "Software Update" to install updates. So that was okay.
Then I ran:
sudo gem install iStats
and the output was:
Building native extensions. This could take a while... ERROR: Error installing iStats: ERROR: Failed to build gem native extension. current directory: /Library/Ruby/Gems/2.3.0/gems/iStats-1.6.1/ext/osx_stats /System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/bin/ruby -r ./siteconf20190117-44665-taivle.rb extconf.rb creating Makefile current directory: /Library/Ruby/Gems/2.3.0/gems/iStats-1.6.1/ext/osx_stats make "DESTDIR=" clean current directory: /Library/Ruby/Gems/2.3.0/gems/iStats-1.6.1/ext/osx_stats make "DESTDIR=" make: *** No rule to make target `/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/ruby-2.3.0/universal-darwin16/ruby/config.h', needed by `smc.o'. Stop. make failed, exit code 2 Gem files will remain installed in /Library/Ruby/Gems/2.3.0/gems/iStats-1.6.1 for inspection. Results logged to /Library/Ruby/Gems/2.3.0/extensions/universal-darwin-16/2.3.0/iStats-1.6.1/gem_make.out
I'm not sure what all of this means, but I know it did not work. So I tried installing ruby using:
brew install ruby, which seemed to do its job.
Then I tried the
sudo gem command again but I got the same output as above.
What is going wrong here?
I just read https://stackoverflow.com/a/26600110/6678549 and tried this:
sudo gem update --system and got this output:
Updating rubygems-update Successfully installed rubygems-update-3.0.2 Parsing documentation for rubygems-update-3.0.2 Installing darkfish documentation for rubygems-update-3.0.2 Done installing documentation for rubygems-update after 108 seconds Parsing documentation for rubygems-update-3.0.2 Done installing documentation for rubygems-update after 0 seconds Installing RubyGems 3.0.2 ERROR: While executing gem ... (Errno::EPERM) Operation not permitted @ rb_sysopen - /System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/bin/gem
So it almost worked, but I'm still no closer to installing iStats.
My ruby version is
ruby 2.3.7p456 in case it is relevant and I am using MacOS Sierra. I have done a bit of reading and found about System Integrity Protection. I have tried a few other commands like
sudo gem install iStats -n /usr/local/bin, but still nothing works. Although after runningsudo gem update --system` it now says the latest version is already installed.