[R-sig-hpc] Makevars.in - changing compiler

[Davor Cubranic]

You *can* modify the package compiler -- for example gputools switches 
to using nvcc CUDA compiler. But I'm pretty sure you'll need to use a 
custom Makefile.

Davor


On December 8, 2010 06:17:41 am George Ostrouchov wrote:
> Hi Dirk,
> 
> Here is some more detail that I should have included earlier. I am
> extending the ncdf4 package to include parallel I/O (already
> available in NetCDF4) so it needs Open MPI includes and libs. Just
> swapping the compiler to mpicc will take care of things. ncdf4 uses
> autoconf and the Makevars.in mechanism. Can the package compiler be
> specified this way?
> 
> Thanks,
> George
> 
> On 12/7/10 11:52 PM, Dirk Eddelbuettel wrote:
> > On 7 December 2010 at 23:44, George Ostrouchov wrote:
> > | Is it possible to set a package compiler via Makevars.in? I need
> > | to substitute mpicc (an Open MPI wrapper compiler). My attempts
> > | just setting CC=mpicc in Makevars.in have failed.
> > 
> > For an R package?
> > 
> > | Is Makevars just "included before the default `Makefile'" as it
> > | states in the "Writing R Extensions" manual or is there more to
> > | it?
> > 
> > Here is what the current Rmpi has in src/Makefile.in:
> >    # -*- Makefile -*-  vim : ft = make
> >    
> >    PKG_CPPFLAGS = @DEFS@ @PKG_CPPFLAGS@
> >    PKG_CFLAGS   = $(ARCHCFLAGS)
> >    PKG_LIBS     = @PKG_LIBS@ $(ARCHLIB)
> > 
> > As you can see, it only sets arguments to the compiler, not the
> > compiler itself.
> > 
> > Rmpi is a pretty good package to study as Hao as been diligently
> > working at it for many years, and has it working for a great
> > number of system and compiler choices.
> > 
> > Did that help? If not please rephrase the question.
> > 
> > Cheers, Dirk