nokogiri gem installation error

Question

I know there are a lot of questions about this gem but no answer has worked for me.

When I run in SSH gem install nokogiri I get this error:

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Answer 1

This worked for me:

sudo gem install nokogiri -v 'versionNumber'  -- --use-system-libraries --with-xslt-dir=/usr/local/opt/libxslt --with-xml2-include=/Applications/Xcode-beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk/usr/include/libxml2 --with-xml2-lib=/Applications/Xcode-beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk/usr/lib

Answer 2

On OSX Yosemite, I did xcode-select --install in a terminal. After which, bundle worked fine with that gem.

Answer 3

I figured this out the hard way and took a few hours to follow the breadcrumbs and read up on what people were trying out. Nothing helped. Everything on this overflow page just didn't help so here's how I fixed this:

If you use your machine for other development projects that aren't in ruby. You might want to check package manager installations for other languages. More importantly - you might want to check for other c compiler installations - namely clang

In my case - I had installed anaconda/conda(python) and this replaced a bunch of paths in my .bash_profile to use clang as the main c compiler where as xcode command line tools and rebenv were all using gcc installed through Homebrew earlier.

I removed anaconda(using anaconda-clean) and the clang installation and then tried to bundle. That's when I got the missing libxml2 issue. I then REINSTALLED libxml2 through homebrew to ensure the symlinks would be redone through homebrew and followed the instructions that followed to add the appropriate export flags to my ~/bash_profile file.

Successfully bundles now. The reason is, the gems are now being bundled with the same compiler as the ruby version I am using for that project.

Docker would have made this a non issue for a polyglot dev machine like many of us I assume.

So heads up.

Answer 4

Nokogiri didn't find Xcode libs on my OSX Sierra machine until I ran:

sudo xcodebuild -license accept

Answer 5

This works for me in Windows 7 Home Basic 64 Bit:

gem install nokogiri -v 1.6.2.1 -- --use-system-libraries

Answer 6

Installing Nokogiri in Mac OS El Capitan:

brew install libxml2 bundle config build.nokogiri "--use-system-libraries --with-xml2-include=/usr/local/opt/libxml2/include/libxml2"

bundle install

It working for me :)