My installation is failing to compile, with an error involving RcppEigen and cmath. I’m teaching Bayesian statistics, and I’ve successfully installed or helped my students install rstan on a variety of computers. It’s always challenging, and RcppEigen appears frequently among the villains. In par…

We’ve seen a few of these reports since the release of Sequoia. It seems like Apple changed some things in XCode that have caused issues. I believe the people who have successfully navigated this have either 1) updated their OS and/or 2) re-installed XCode. In your case, what immediately stood out…

How did you upgrade to XCode v16? I’m getting the same error and haven’t been able to work around it…

FWIW, the code runs on Sonoma 14.5, but the laptop I was using/getting the same error on is running on Sonoma 14.7

I upgraded to Sequoia, V15.0.1 and then XCode to 16.0 using the App Store. I didn’t test in between to see if Sequoia alone was enough. Good luck!

In case this helps someone else who comes to this thread - I had a problem where I upgraded to MacOS Sequoia and could no longer compile Stan models. I managed to fix the problem by upgrading R (to v4.5) using macrtools to reinstall the tool chain: [image] GitHub - coatless-mac/macrtoo…

Thanks for reporting back, @stevewooding .

RcppEigen, cmath, and rstan installation issues

General

turtlegraphics October 18, 2024, 1:06am 3

Thanks, Brian.

I upgraded to Sequoia and XCode v16 and now things are working.

Much appreciated!

'cmath' file not found when running brms models

Topic		Replies	Views
Stan fails to compile fatal error: 'cmath' file not found 679 Developers rstan	12	2323	November 20, 2025
RStan下载，应用 CmdStan rstan , techniques	1	94	October 14, 2024
Updated RStudio now can't install rstan RStan rstan	1	459	March 25, 2024
Installing Rstan Developers rstan	3	631	January 31, 2020
Can't compile a simple C file with Rstan on MacOS Sonoma 14.5 Developers rstan , bug	3	727	July 15, 2024

RcppEigen, cmath, and rstan installation issues

Related topics