# CmdStan with STANC2 on ARM

**URL:** <https://discourse.mc-stan.org/t/cmdstan-with-stanc2-on-arm/20858>\
**Category:** CmdStan\
**Created:** [February 18, 2021, 8:27am UTC](https://discourse.mc-stan.org/t/cmdstan-with-stanc2-on-arm/20858 "2021-02-18T08:27:32Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![rok\_cesnovar](https://avatars.discourse-cdn.com/v4/letter/r/7bcc69/32.png) [@rok\_cesnovar](https://discourse.mc-stan.org/u/rok_cesnovar)\
**Post date:** [February 18, 2021, 8:56am UTC](https://discourse.mc-stan.org/t/cmdstan-with-stanc2-on-arm/20858/2 "2021-02-18T08:56:57Z")

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STANC2 does not work in 2.26 as there were a few breaking changes that prevent it to work. Its now been removed on develop. It should still work with 2.25 if I recall correctly.

The other option is to use emulation for stanc3 compilation phase.

@StaffanBetner has used this. There is an issue for this: [QEMU emulation of stanc3 on architectures without provided binaries · Issue #956 · stan-dev/cmdstan · GitHub](https://github.com/stan-dev/cmdstan/issues/956)

Also see [Problem compiling models with cmdstan on arm64](https://discourse.mc-stan.org/t/problem-compiling-models-with-cmdstan-on-arm64/19601)

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