[GitHub] [arrow] david-cortes opened a new issue, #35640: [R] `arrow::install_arrow()` doesn't use the same compiler arguments as `install.packages`

["david-cortes (via GitHub)" <gi...@apache.org>]

david-cortes opened a new issue, #35640:
URL: https://github.com/apache/arrow/issues/35640

   ### Describe the bug, including details regarding any error messages, version, and platform.
   
   When running `arrow::install_arrow()` on R, it will not use the exact same compiler and arguments that are set by default when compiling R packages, which tyically include additional library paths compared to the system's compiler.
   
   For a concrete example, in a mac-ARM setup in which one has `apple-clang` from `xcode-select`, a user `Makevars` file like this would succeed in compiling packages with `install.packages`:
   ```
   CFLAGS += -Xclang -fopenmp
   CXXFLAGS += -Xclang -fopenmp
   LDFLAGS += -lomp
   ```
   (plus an additional entry for `CPPFLAGS`)
   
   But this would throw an error when calling `arrow::install_arrow()` due to `-lomp` - instead, one needs to add a `-L` argument to `LDFLAGS` in `Makevars`.
   
   To be clear, the bug report is not _spefically_ about this particular case, but about not using the remainder of the flags that would end up used with `install.packages`.
   
   This is also quite problematic when using a conda-installed R that might have an environment that differs very significantly from the system's default
   
   ### Component(s)
   
   R


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