Ruby 2.2 ERROR: Failed to build gem native extension

[Ch4s3]

I get the following tring to install with Ruby 2.2.

  ERROR:  Error installing treat:
    ERROR: Failed to build gem native extension.

      /Users/chase/.rvm/rubies/ruby-2.2.0/bin/ruby -r ./siteconf20150115-38059-17qul84.rb extconf.rb
  creating Makefile

  make "DESTDIR=" clean

  make "DESTDIR="
  compiling native.c
  native.c:39:8: warning: unused variable 'node_a' [-Wunused-variable]
          VALUE node_a;
                ^
  native.c:40:8: warning: unused variable 'node_b' [-Wunused-variable]
          VALUE node_b;
                ^
  native.c:41:8: warning: unused variable 'directed' [-Wunused-variable]
          VALUE directed;
                ^
  native.c:42:8: warning: unused variable 'direction' [-Wunused-variable]
          VALUE direction;
                ^
  native.c:58:1: warning: control may reach end of non-void function [-Wreturn-type]
  }
  ^
  native.c:272:8: warning: implicit declaration of function 'RHASH' is invalid in C99 [-Wimplicit-function-declaration]
    if (!RHASH(features)->ntbl) {
         ^
  native.c:272:25: error: member reference type 'int' is not a pointer
    if (!RHASH(features)->ntbl) {
         ~~~~~~~~~~~~~~~  ^
  6 warnings and 1 error generated.
  make: *** [native.o] Error 1

  make failed, exit code 2

[shawn42]

I can confirm this error as well. It looks like the hash internals changed in 2.2; these will need to conditionally be used:

define RHASH_TBL(h) rb_hash_tbl(h)

define RHASH_SIZE(h) NUM2SIZET(rb_hash_size(h))

instead of the RHASH(xxx)->ntbl calls.

[faustoct1]

I did a patch for that but is unofficial one. https://github.com/faustoct/birch/

More details in:

• birch gem describing this issue https://github.com/louismullie/birch/issues/11.
• Ruby hide internal hash: https://bugs.ruby-lang.org/issues/9889

[alexed1]

would love to see a fix for this. can't use treat as a result. I was able eto build a treat gem using faustoct's fork, but I can't figure out how to get my 2.2 project to use that gem instead of trying to build a new one in the 2.2. world

[kylekyle]

@faustoct: thanks for the birch fork. It saved the day.

[agarie]

@alexed1 you can link to a specific git repository via your Gemfile.

[louismullie]

@faustoct Can you submit a PR for your fork to the main birch repository?

[faustoct1]

@louismullie PR submitted

[Ch4s3]

:+1:

[sepastian]

:+1:

If you are using rbenv, you can also do:

$ cd your_project
$ rbenv local 2.1.5
$ bundle

The build works in Ruby 2.1.x.

[wired00]

Based on the details gleaned above, here are the exact steps I followed to get treat working with ruby 2.2 on osx yosemite

• gem install 'specific_install'
• gem specific_install -l https://github.com/faustoct/birch.git
• gem install 'treat'
• Then followed this: https://github.com/louismullie/treat/wiki/Manual#installing-treat-core . which required from terminal:

  • irb

  • require 'treat'

  • Treat::Core::Installer.install 'english'

[zibs]

Thank you so much @wired00!

[ludoplex]

@wired00! YOU ARE AWESOME!

[wired00]

@ludoplex @zibs Glad it helped you guys! :)

[naltun]

@wired00 I am running Ubuntu 14.04.2 and this worked perfectly. Cheers!! :+1:

[travispearl]

For those still struggling with treat gem installation in Ruby - here is the workaround to modify your Gemfile:

Gemfile

add birch gem installation first with path to faustoct version

gem "birch", :git => 'https://github.com/faustoct/birch.git' gem "treat"

Then 'bundle install' will work as expected

[louismullie]

Fixed in most recent birch release