# NuPIC Core: Build fails on arm64 Linux

**URL:** <https://discourse.numenta.org/t/nupic-core-build-fails-on-arm64-linux/4526>\
**Category:** NuPIC\
**Tags:** bug\
**Created:** [September 9, 2018, 1:45pm UTC](https://discourse.numenta.org/t/nupic-core-build-fails-on-arm64-linux/4526 "2018-09-09T13:45:05Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Paul\_Lamb](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.numenta.org/paul_lamb/32/2725_2.png) [@Paul\_Lamb](https://discourse.numenta.org/u/Paul_Lamb)\
**Post date:** [September 9, 2018, 1:45pm UTC](https://discourse.numenta.org/t/nupic-core-build-fails-on-arm64-linux/4526/1 "2018-09-09T13:45:06Z")

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Building for the arm64 architecture on Linux fails with the following error:

`src/nupic/math/ArrayAlgo.hpp:3539:11: error: impossible constraint in 'asm'`

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**Author:** ![Paul\_Lamb](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.numenta.org/paul_lamb/32/2725_2.png) [@Paul\_Lamb](https://discourse.numenta.org/u/Paul_Lamb)\
**Post date:** [September 9, 2018, 1:46pm UTC](https://discourse.numenta.org/t/nupic-core-build-fails-on-arm64-linux/4526/2 "2018-09-09T13:46:55Z")

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Opened [Issue #1439](https://github.com/numenta/nupic.core/issues/1439) on GitHub

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**Author:** ![rhyolight](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.numenta.org/rhyolight/32/3922_2.png) [@rhyolight](https://discourse.numenta.org/u/rhyolight)\
**Post date:** [September 10, 2018, 4:23pm UTC](https://discourse.numenta.org/t/nupic-core-build-fails-on-arm64-linux/4526/3 "2018-09-10T16:23:09Z")

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