# Node addon v6 job fails on osx

**URL:** <https://travis-ci.community/t/node-addon-v6-job-fails-on-osx/3441>\
**Category:** Node.js\
**Created:** [May 18, 2019, 11:32am UTC](https://travis-ci.community/t/node-addon-v6-job-fails-on-osx/3441 "2019-05-18T11:32:23Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![tugrul](https://sea1.discourse-cdn.com/flex015/user_avatar/travis-ci.community/tugrul/32/1823_2.png) [@tugrul](https://travis-ci.community/u/tugrul)\
**Post date:** [May 18, 2019, 11:32am UTC](https://travis-ci.community/t/node-addon-v6-job-fails-on-osx/3441/1 "2019-05-18T11:32:23Z")

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[https://travis-ci.org/tugrul/cryptian/jobs/533851458](https://travis-ci.org/tugrul/cryptian/jobs/533851458)

It looks like failed by missing new c++ feature on node v6 build job.

how can i specifiy c++11 flag for only v6 build job?

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<div class="post-metadata">

**Author:** ![tugrul](https://sea1.discourse-cdn.com/flex015/user_avatar/travis-ci.community/tugrul/32/1823_2.png) [@tugrul](https://travis-ci.community/u/tugrul)\
**Post date:** [May 19, 2019, 1:47pm UTC](https://travis-ci.community/t/node-addon-v6-job-fails-on-osx/3441/2 "2019-05-19T13:47:02Z")

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I found problem `-stdlib=libc++` was missing v6 build environment.

I just add xcode\_settings to binding.gyp file and problem is fixed.

> <https://github.com/tugrul/cryptian/commit/fd96b9bcde2f116122526176e53433f58e22c02f>