[R-SIG-Mac] Using Makefile in my package?

[Brian J. Lopes]

I am trying to create a Makefile for my C source code in my library. 
Yet, whenever I try to build the package I get:

$ R CMD build spatrr
* checking for file 'spatrr/DESCRIPTION' ... OK
* preparing 'spatrr':
* checking DESCRIPTION meta-information ... OK
* cleaning src
make: /Library/Frameworks/R.framework/Resources/etc/Makeconf: No such 
file or directory
make: *** No rule to make target 
`/Library/Frameworks/R.framework/Resources/etc/Makeconf'.  Stop.
* removing junk files
* checking for LF line-endings in source files
* checking for empty or unneeded directories
* building 'spatrr_1.0.tar.gz'

I've noticed some older posts pointing out that references to Makeconf 
should be $(R_HOME)/etc${R_ARCH}/Makeconf, but everywhere I look this 
seems to be setup correctly.

I am using the standard binary download of R 2.5.0 on OS X 10.4.  Please 
CC me on responses, as I am not subscribed to the list.

Thanks in advance for any help!


-- 
To know that we know what we know, and that we do not know what we do
not know, that is true knowledge --Henry David Thoreau (quoting
Confucius): Walden