PythonEmbedInR is one of synapser's dependencies. It's an R package that requires C compilation. 

Mac System Dependencies

• Xcode
• OpenSSL 
• wget

Common errors and fixes:

Mac - libcryto.a not found

Repro

There are 2 ways to repro this problem. In Terminal:

1. clone the repo

2. run the following commands:

   cd PythonEmbedInR
   R CMD build .
   R CMD install PythonEmbedInR_0.0.0.tar.gz

3. error:

   * installing to library ‘/Library/Frameworks/R.framework/Versions/3.5/Resources/library’
   * installing *source* package ‘PythonEmbedInR’ ...
   ./configure: line 32: wget: command not found
     % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                    Dload  Upload   Total   Spent    Left  Speed
   100 19.6M  100 19.6M    0     0  19.5M      0  0:00:01  0:00:01 --:--:-- 19.5M
   Mac specific configuration
   cp: /usr/local/opt/openssl/lib/libcrypto.a: No such file or directory
   ERROR: configuration failed for package ‘PythonEmbedInR’
   * removing ‘/Library/Frameworks/R.framework/Versions/3.5/Resources/library/PythonEmbedInR’
   * restoring previous ‘/Library/Frameworks/R.framework/Versions/3.5/Resources/library/PythonEmbedInR’
   
   

In RStudio:

1. Open PythonEmbedInR project
2. Click Install and Restart

3. Error:

   ==> R CMD INSTALL --no-multiarch --with-keep.source PythonEmbedInR
   
   * installing to library ‘/Library/Frameworks/R.framework/Versions/3.5/Resources/library’
   * installing *source* package ‘PythonEmbedInR’ ...
   ./configure: line 32: wget: command not found
     % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                    Dload  Upload   Total   Spent    Left  Speed
     0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0Failed to download https://www.python.org/ftp/python/3.5.3/Python-3.5.3.tgz
     0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
   curl: (77) error setting certificate verify locations:
     CAfile: /Library/Frameworks/R.framework/Versions/3.5/Resources/library/PythonEmbedInR/lib/python3.5/site-packages/pip/_vendor/requests/cacert.pem
     CApath: none
   ERROR: configuration failed for package ‘PythonEmbedInR’
   * removing ‘/Library/Frameworks/R.framework/Versions/3.5/Resources/library/PythonEmbedInR’
   * restoring previous ‘/Library/Frameworks/R.framework/Versions/3.5/Resources/library/PythonEmbedInR’
   
   Exited with status 1.

Fix

Install the Mac System Dependencies listed above.