rstan

The provided logs demonstrate a discrepancy between Devel and CRAN installation paths for packages like idem and visit on macOS:

1. Devel Installation: Often fails during the clang++ compilation step due to missing members in the global namespace (e.g., lgamma_r) when using StanHeaders/new.
2. CRAN Installation: Successfully completes the installation process, including byte-compilation, help index installation, and vignette installation, using StanHeaders/old.

If you encounter compilation errors in a development environment, switching to the CRAN version of the headers may resolve the issue.

To install RStan and begin using the R interface to Stan, follow the official installation instructions and setup tips provided in the RStan Getting Started guide. This guide covers the necessary steps to configure your environment for probabilistic programming in R.

See: https://github.com/stan-dev/rstan/wiki/RStan-Getting-Started

The beanz package (version 2.4) can be installed via Devel or CRAN methods. Note that Devel installations may fail due to lgamma_r compilation errors depending on the StanHeaders version used.

# Example Devel installation log snippet
* installing *source* package ‘beanz’ ...
** package ‘beanz’ successfully unpacked and MD5 sums checked
** using staged installation
** libs
"/Library/Frameworks/R.framework/Resources/bin/Rscript" -e "source(file.path('..', 'tools', 'make_cc.R')); make_cc(commandArgs(TRUE))" stan_files/bs.stan

The dfpk package (version 3.5.1) can be installed via Devel or CRAN. Similar to beanz, Devel installations may encounter lgamma_r errors in Modules.cpp during the compilation of StanHeaders primitives.

# Example Devel installation log snippet
* installing *source* package ‘dfpk’ ...
** package ‘dfpk’ successfully unpacked and MD5 sums checked
** using staged installation
** libs
clang++ -arch arm64 ... -c Modules.cpp -o Modules.o

When installing packages from the Devel (development) version of StanHeaders on macOS (arm64), you may encounter a compilation error where lgamma_r is not found in the global namespace. This error occurs during the compilation of the generated C++ file from a .stan file.

Error Signature: error: no member named 'lgamma_r' in the global namespace

This issue appears to be specific to the Devel environment and is not present in the CRAN version of the headers.

In file included from stan_files/idem.cc:3:
...
  return ::lgamma_r(x, &sign);
         ~~^
/Users/andrew/Downloads/StanHeaders/revdep/library.noindex/StanHeaders/new/StanHeaders/include/stan/math/prim/fun/lgamma.hpp:85:12: error: no member named 'lgamma_r' in the global namespace
  return ::lgamma_r(x, &sign);
         ~~^

When installing packages that depend on StanHeaders (such as beanz or dfpk) on macOS (arm64), you may encounter a compilation error in lgamma.hpp. This error occurs because the compiler cannot find lgamma_r in the global namespace.

Error Signature:

/StanHeaders/include/stan/math/prim/fun/lgamma.hpp:85:12: error: no member named 'lgamma_r' in the global namespace
  return ::lgamma_r(x, &sign);
         ~~^

This error is observed in both Devel and CRAN installation paths when using certain versions of StanHeaders during the compilation of .cc or .cpp files.