Perhaps same as https://stat.ethz.ch/pipermail/r-sig-mac/2024-September/015042.html
Try this: sudo rm -rf /Library/Developer/CommandLineTools/usr/include/c++ On Fri, Aug 29, 2025 at 8:09 PM Lee Hsiang Liow <[email protected]> wrote: > > New to the list. > > Got a new laptop, running OS 15.5 Sequoia. > R version 4.5.1 (2025-06-13) -- "Great Square Root" > Have new Xcode, new gofortran > > Trying to install an R package that runs C++, have the R dependencies, the > error in installation is: > > ** using staged installation > ** libs > using C++ compiler: ‘Apple clang version 16.0.0 (clang-1600.0.26.6)’ > using SDK: ‘MacOSX15.2.sdk’ > [……. Removing some non relevant info……] > > fatal error: 'cmath' file not found > 37 | #include <cmath> > | ^~~~~~~ > 1 error generated. > > Can any one advise? Thank you! > > > > [[alternative HTML version deleted]] > > _______________________________________________ > R-SIG-Mac mailing list > [email protected] > https://stat.ethz.ch/mailman/listinfo/r-sig-mac _______________________________________________ R-SIG-Mac mailing list [email protected] https://stat.ethz.ch/mailman/listinfo/r-sig-mac
