(Solved) Installing bundler on Ubuntu 16.04: ffi and nokogiri

[laurensvalk]

I had two issues performing the step

sudo gem install bundler

On Ubuntu 16.04. Apparently, ffi and nokogiri failed to build.

To fix it, [source 1, source 2] run:

sudo apt-get install ruby-dev
sudo apt-get install zlib1g-dev

And then installing bundler again completed successfully. Perhaps these two packages could be added to the apt-get instructions already in the readme. Also, the "2.0" packages "ruby2.0 ruby2.0-dev" don't seem to exist in 16.04.

For reference, the error messages are posted below.

Installing ffi 1.9.14 with native extensions

Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

    current directory: /tmp/bundler20160905-5727-1ga529ffi-1.9.14/gems/ffi-1.9.14/ext/ffi_c
/usr/bin/ruby2.3 -r ./siteconf20160905-5727-mho9w6.rb extconf.rb
mkmf.rb can't find header files for ruby at /usr/lib/ruby/include/ruby.h

extconf failed, exit code 1

Gem files will remain installed in /tmp/bundler20160905-5727-1ga529ffi-1.9.14/gems/ffi-1.9.14 for inspection.
Results logged to /tmp/bundler20160905-5727-1ga529ffi-1.9.14/extensions/x86_64-linux/2.3.0/ffi-1.9.14/gem_make.out

(...)

An error occurred while installing ffi (1.9.14), and Bundler cannot continue.
Make sure that `gem install ffi -v '1.9.14'` succeeds before bundling.

Installing nokogiri 1.6.8 with native extensions

Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

    current directory: /tmp/bundler20160905-11974-ln6hq2nokogiri-1.6.8/gems/nokogiri-1.6.8/ext/nokogiri
/usr/bin/ruby2.3 -r ./siteconf20160905-11974-klmref.rb extconf.rb
Using pkg-config version 1.1.7
checking if the C compiler accepts ... yes
Building nokogiri using packaged libraries.
Using mini_portile version 2.1.0
checking for gzdopen() in -lz... no
zlib is missing; necessary for building libxml2
*** 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=/usr/bin/$(RUBY_BASE_NAME)2.3
    --help
    --clean
    --use-system-libraries
    --enable-static
    --disable-static
    --with-zlib-dir
    --without-zlib-dir
    --with-zlib-include
    --without-zlib-include=${zlib-dir}/include
    --with-zlib-lib
    --without-zlib-lib=${zlib-dir}/lib
    --enable-cross-build
    --disable-cross-build

To see why this extension failed to compile, please check the mkmf.log which can be found here:

  /tmp/bundler20160905-11974-ln6hq2nokogiri-1.6.8/extensions/x86_64-linux/2.3.0/nokogiri-1.6.8/mkmf.log

extconf failed, exit code 1

Gem files will remain installed in /tmp/bundler20160905-11974-ln6hq2nokogiri-1.6.8/gems/nokogiri-1.6.8 for inspection.
Results logged to /tmp/bundler20160905-11974-ln6hq2nokogiri-1.6.8/extensions/x86_64-linux/2.3.0/nokogiri-1.6.8/gem_make.out

[WasabiFan]

Fixed in #231. Issue number was transcribed slightly incorrectly so it didn't close automatically. Thanks for the report!