I am trying to run R (development) version 4.0 that I compiled from source on a mac as the engine in RStudio. According to the documentation Rstudio for Mac scans for the R executable in the following sequence:
- whatever version of R is located at
and this can be overridden by setting the environment variable
Well, I have a working install at location 2 (ie, can run it from Terminal no problem) and have also tried exporting
RSTUDIO_WHICH_R=/usr/local/bin/R, then opening RStudio with
open -an RStudio in a Terminal. I can verify in Rstudio that the environment variable was set with
Sys.getenv and points to a file:
But I can't for the life of me get RStudio to run anything but the version linked in
/Library/Frameworks/R.framework/. So I suspect that this documentation is no longer accurate for MacOS. Has anyone actually observed the documentation to be accurate?
This is with Rstudio 1.2.5033, R 3.6.1 installed in Frameworks and r77542 installed under /usr/local/bin on a Mac. Running Mojave 10.14.6.
After reading the rstudio source and trying to understand how RSTUDIO_WHICH_R is used, I saw that there was some logging occurring. In
~/.rstudio-desktop/log/rdesktop.log I see the following:
18 Dec 2019 05:50:30 [rdesktop] ERROR Unable to find libR.dylib in expected locationswithin R Home directory /usr/local/lib/R-4.0.0-devel; LOGGED FROM: bool rstudio::core::r_util::(anonymous namespace)::getLibPathFromRHome(const rstudio::core::FilePath &, std::string *, std::string *) /Users/vagrant/workspace/IDE/macos-v1.2/src/cpp/core/r_util/REnvironmentPosix.cpp:140
So it seems I need to set
--enable-R-shlib when I compile R...stay tuned.