R and GNU gcc for OpenMP

Debabrata Midya wrote:

Dear R users,
 Thanks in advance.



I am using R 2.9.1 on Windows XP.
 May I request you to assist me on the following:
 I have downloaded Rtools29.exe and installed it today 02 Sep 2009 and I 
have also provided the appropriate path variable for Rtools.
 I have checked the version of gcc compiler in Rtools.exe is 4.2.1.
 I have checked (in  http://gcc.gnu.org/) the latest available gcc compiler 
is 4.4.1. My objective is to use latest gnu gcc for openMP and I like to 
link it to R (by creating *.dll).
 How can I use latest version of gcc for openMP? And at the same time I 
like to use Rtools as well.

I have moved this response to the R-devel mailing list, it's not really 
appropriate for R-help.

Generally speaking the compiler used for a .dll need not be the same one used 
for the rest of an application, so R won't care if you work out how to use 
gcc 4.4.1 to build your dll.  However:

- The scripts for building packages are written and tested against gcc 
4.2.1; you may need to tweak them to work with a different compiler.
- As far as I know, there's no gcc 4.4.1 available for Windows, but 4.4.0 is 
available on the MinGW site.  So if you really need 4.4.1 you may need to 
compile it yourself.

So this is a pretty difficult project.   You can ask on the R-devel mailing 
list for help, but there aren't many people who will be able to help you, so 
you may be pretty much on your own.

Duncan Murdoch

 Once again, thank you very much for the time you have given.
 I am looking forward for your reply.
 Regards,
 Deb