# Mini\_racer 0.2.0 causing bundler to fail
**URL:** https://meta.discourse.org/t/mini-racer-0-2-0-causing-bundler-to-fail/106281
**Category:** Self-hosting
**Tags:** unsupported-install
**Created:** [11.Январь.2019 14:18:13 UTC](https://meta.discourse.org/t/mini-racer-0-2-0-causing-bundler-to-fail/106281 "2019-01-11T14:18:13Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@meyersh](https://meta.discourse.org/u/meyersh)
#### Post date: [11.Январь.2019 14:18:13 UTC](https://meta.discourse.org/t/mini-racer-0-2-0-causing-bundler-to-fail/106281/1 "2019-01-11T14:18:13Z")
I am upgrading Discourse to 2.1.6 from 1.9.6, and I cannot get through bundle install. I am using Docker (ubuntu 16.04) as the base image to build discourse. Ruby version 2.3.0. When I get to bundle install, I get the following compilation error. Urgent Help! Not sure what else I’m missing…
```
==============================
Gem::Ext::BuildError: ERROR: Failed to build gem native extension.
current directory:
/usr/local/rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/mini_racer-0.2.0/ext/mini_racer_extension
/usr/local/rbenv/versions/2.3.0/bin/ruby -r ./siteconf20190111-14622-1sr4cny.rb
extconf.rb
checking for main() in -lpthread... yes
creating Makefile
To see why this extension failed to compile, please check the mkmf.log which can
be found here:
/usr/local/rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/extensions/x86_64-linux/2.3.0-static/mini_racer-0.2.0/mkmf.log
current directory:
/usr/local/rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/mini_racer-0.2.0/ext/mini_racer_extension
make "DESTDIR=" clean
current directory:
/usr/local/rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/mini_racer-0.2.0/ext/mini_racer_extension
make "DESTDIR="
compiling mini_racer_extension.cc
In file included from
/usr/local/rbenv/versions/2.3.0/include/ruby-2.3.0/ruby.h:33:0,
from mini_racer_extension.cc:2:
mini_racer_extension.cc: In function 'VALUE protected_callback(VALUE)':
/usr/local/rbenv/versions/2.3.0/include/ruby-2.3.0/ruby/ruby.h:882:52: error:
'__builtin_choose_expr' was not declared in this scope
OBJ_WB_UNPROTECT((VALUE)(obj)), ((VALUE)(obj))))
^
/usr/local/rbenv/versions/2.3.0/include/ruby-2.3.0/ruby/ruby.h:1039:48: note: in
definition of macro 'RARRAY_CONST_PTR'
#define RARRAY_CONST_PTR(a) rb_array_const_ptr(a)
^
/usr/local/rbenv/versions/2.3.0/include/ruby-2.3.0/ruby/ruby.h:1059:50: note: in
expansion of macro 'RB_OBJ_WB_UNPROTECT_FOR'
#define RARRAY_PTR(a) ((VALUE *)RARRAY_CONST_PTR(RB_OBJ_WB_UNPROTECT_FOR(ARRAY,
a)))
^
mini_racer_extension.cc:850:9: note: in expansion of macro 'RARRAY_PTR'
RARRAY_PTR(data->ruby_args));
^
Makefile:206: recipe for target 'mini_racer_extension.o' failed
make: *** [mini_racer_extension.o] Error 1
make failed, exit code 2
Gem files will remain installed in
/usr/local/rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/mini_racer-0.2.0 for
inspection.
Results logged to
/usr/local/rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/extensions/x86_64-linux/2.3.0-static/mini_racer-0.2.0/gem_make.out
An error occurred while installing mini_racer (0.2.0), and Bundler cannot
continue.
Make sure that `gem install mini_racer -v '0.2.0' --source
'https://rubygems.org/'` succeeds before bundling.
In Gemfile:
mini_racer
Looking at the gems getting installed, I do see this (which I believe is what mini_racer depends on):
Fetching libv8 6.7.288.46.1 (x86_64-linux)
Installing libv8 6.7.288.46.1 (x86_64-linux)
```
---
### Author:  [@Falco](https://meta.discourse.org/u/Falco)
#### Post date: [11.Январь.2019 16:21:38 UTC](https://meta.discourse.org/t/mini-racer-0-2-0-causing-bundler-to-fail/106281/2 "2019-01-11T16:21:38Z")
Please follow our [official install](https://meta.discourse.org/t/142537?silent=true) guide: [discourse/docs/INSTALL-cloud.md at main · discourse/discourse · GitHub](https://github.com/discourse/discourse/blob/master/docs/INSTALL-cloud.md)
---
### Author:  [@sam](https://meta.discourse.org/u/sam)
#### Post date: [29.Апрель.2019 00:25:01 UTC](https://meta.discourse.org/t/mini-racer-0-2-0-causing-bundler-to-fail/106281/3 "2019-04-29T00:25:01Z")