[R-SIG-Mac] cblas on Mac and Linux

Kasper Daniel Hansen khansen at stat.berkeley.edu
Fri Mar 20 18:14:55 CET 2009

There are Apple specific defines in GCC. As far as I know
means compiling on Apple hardware, whereas
means compiling using an Apple supplied compiler.

However, the first one seems sometimes to be used when the last one is  


On Mar 19, 2009, at 21:50 , Gad Abraham wrote:

> Hi,
> I've got a package with some C code calling cblas functions (e.g.,  
> cblas_dgemm). The code is called using .C() . In order to compile  
> correctly either cblas.h on Linux or Accelerate.h on a Mac:
> #include <R.h>
> #ifdef MACOSX
> #include <Accelerate/Accelerate.h>
> #else
> #include <cblas.h>
> #endif
> Of course, this doesn't work well with the standard Makevars  
> PKG_LIBS=$(LAPACK_LIBS) $(BLAS_LIBS) $(FLIBS) since I need to set  
> the -DMACOSX flag for each platform.
> Do I need to create another makefile to decide which OS the code is  
> running on, or is there an easier way of doing this?
> Thanks,
> Gad
> -- 
> Gad Abraham
> MEng Student, Dept. CSSE and NICTA
> The University of Melbourne
> Parkville 3010, Victoria, Australia
> email: gabraham at csse.unimelb.edu.au
> web: http://www.csse.unimelb.edu.au/~gabraham
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