I've been trying to install RPy2 on MacOS Sierra, for Python 3.6 but the pip installation fails without compiling.
The installation errors out with the message:
clang: error: unsupported option '-fopenmp'
error: command 'clang' failed with exit status 1
Any help with the installation would be appreciated.
Found the solution in this thread.
env CC=/usr/local/Cellar/gcc/X.x.x/bin/gcc-X pip install rpy2
Running the above command by replacing the gcc version with the latest version on your machine should solve the problem. For example, on my mac, I ran
env CC=/usr/local/Cellar/gcc/8.2.0/bin/gcc-8 pip install rpy2
If using a Miniconda environment this works:
conda install -c r rpy2
From: https://anaconda.org/r/rpy2
macOS Mojave
Python 3.8
If you have the python package wheel installed, pip install should fetch the pre-compiled binary for OS X, I believe.