[R] Build a package on one Mac but unable to load this on another Mac

[David Winsemius]

On Oct 18, 2014, at 8:42 AM, althu07 wrote:

> Hi, I build a package on one Mac. I can install the package on another Mac
> but it cannot be loaded. The following is the error message.
> 
> Error in dyn.load(file, DLLpath = DLLpath, ...) :
> unable to load shared object
> '/Library/Frameworks/R.framework/Versions/3.1/Resources/library/mypkgfe/libs/mypkgfe.so':
> dlopen(/Library/Frameworks/R.framework/Versions/3.1/Resources/library/mypkgfe/libs/mypkgfe.so,
> 6): Library not loaded: /usr/local/lib/libgfortran.3.dylib
> Referenced from:
> /Library/Frameworks/R.framework/Versions/3.1/Resources/library/mypkgfe/libs/mypkgfe.so
> Reason: image not found
> Error: package or namespace load failed for ‘mypkgfe’
> 
> If I install the gfortran on the user's Mac, the package can be installed
> and loaded successfully. But I don't think this is a good option to solve
> this problem as it requires too much on the user's end. Is there anyway to
> build the package so that it can be successfully loaded even the Mac
> doesn't have gfortran preinstalled?
> 
> It seems the Mavericks OS X can load the package but not the Snow Leopard
> OS X. I am wondering if this has anything to do with the fact that R for
> Snow Leopard doesn't include GNU Fortran.

As far as Macs are concerned there are two forks in the R versions: one running on Snow Leopard, Lion and Mountain Lion and the other running on Mavericks and Yosemite. If you submit the package to CRAN it will build two different versions using the correct toolchains (and the correct XQuartz and Java packages). If  you are doing this on your own, you will need to have two different versions each with the correct toolchains. This is something that is described in the admin documents. And future questions should go to the correct mailing list: R-SIG-Mac: https://stat.ethz.ch/mailman/listinfo/r-sig-mac


> 
> Thanks!
> 
> 	[[alternative HTML version deleted]]

And like rhelp, R-SIG-Mac is a plain text mailing list.

> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.

David Winsemius
Alameda, CA, USA