Specified module could not be found (Windows)

[Blackmist]

Using either the binary version or building the gem myself, I get the following error when trying to use 2.3.3:

C:/Ruby193/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in require':
126: The specified module could not be found. - C:/Ruby193/lib/ruby/gems/1.9.1/gems/libxml-ruby-2.3.3/lib/libxml_ruby.so (LoadError)
from C:/Ruby193/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in 'require'from C:/Ruby193/lib/ruby/gems/1.9.1/gems/libxml-ruby-2.3.3/lib/libxml.rb:8:in 'rescue in <top (required)>'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/libxml-ruby-2.3.3/lib/libxml.rb:4:in '<top (required)>'from C:/Ruby193/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:60:in 'require'
from C:/Ruby193/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:60:in 'rescue in require'from C:/Ruby193/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:35:in 'require'
` from blah.rb:1:in '

'

I've tried with the 1.9.x version of both railsinstaller and rubyinstaller with the same result. It looks like it has something to do with the require "#{$1}/libxml_ruby" statement in lib/libxml.rb, but I'm unsure what the fix should be for this.

[cfis]

Looks like you are installing from the source gem? Did you try the mingw32 gem with prebuilt binaries? Should be in lib/1.8 and lib/1.9

[Blackmist]

I get the same error if I do the mingw32 with prebuilt binaries. What it turns out to be is that libxml2-2.dll isn't found. The prebuilt package installs it at C:\Ruby193\lib\ruby\gems\1.9.1\gems\libxml-ruby-2.3.3-x86-mingw32\lib\libs. Copying this to C:\Ruby193\bin resolves the problem.
Was testing it on a different (cleaner) system and received a popup about not finding libxml2-2.dll, which clued me in on where to look.

[cfis]

Ah great. Should the docs be updated to make this clearer? I used to try and automatically do this, but that turned out to be a bit of pain, so don't really have a good automated solution.

[Blackmist]

Yes, a note in the docs would be great. Thanks for being patient while I thrashed around with this.

[gauched]

I had the same issue with libxml-ruby-2.3.3-x86-mingw32. Adding this to the top of the lib/libxml.rb resolved it for me.

ENV['PATH'] = ENV['PATH'] + ';' + File.expand_path(File.dirname(FILE) + '/libs')

[kamenlitchev]

I had the same issue and gauched's solution did the trick. Maybe it shall be added to the code. (Windows 7x64, Ruby 2/1.9.2/1.9.3)

[cfis]

Yeah, iirc, I used to have that code but then took it out because it wasn't as stable as I wanted...

[Chadical]

No need to hack the source files, just add path to the dir with the dll to your local path or the the ENV['PATH'] var in your script.

[kamenlitchev]

I do not think it is a "hack". That's the only GEM that cannot file its files.

[starrychloe]

Wow this STILL isn't fixed after 2 years? I just had to do what @gauched said for version 2.7.0.

[ailjushkin]

@starrychloe this still isn't fixed

[KapilMetacube]

Any update on this
I'm not able to resolve this issue with the above-mentioned solutions.
ENV['PATH'] = ENV['PATH'] + ';' + File.expand_path(File.dirname(FILE) + '/libs') still raises the same error.
(Replacing FILE with C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/libxml-ruby-3.0.0-x64-mingw32/lib/libxml.rb ) @gauched Is this what should be used here?
However, I used the absolute path and still no luck.
Copying the libiconv-2.dll as well as libxml2-2.dll in C:\Ruby24-x64\bin also didn't help
#91 #114 seems to share the same issue, but no help from there too.
Please help
This gem is a dependency for twilio-ruby that I'm using and stuck.

OS: Windows 10
Ruby version: 2.4