Please don't pick things out of context. It does not say .C() is
deprecated and it is not talking about R code: it says
There are default variables and rules for this (determined when R is
configured and recorded in R_HOME/etcR_ARCH/Makeconf), providing
support for C, C++, FORTRAN 77, Fortran 9x, Objective C and Objective
C++ with associated extensions .c, .cc or .cpp, .f, .f90 or .f95,
.m, and .mm or .M, respectively. We recommend using .h for headers,
also for C++ or Fortran 9x include files. (Use of .C for C++ is now
deprecated and will be removed in R 2.12.0.)
You missed 'associated extensions', and that the NEWS file says
o Use of file extension .C for C++ code in packages is now
deprecated: it has caused problems for some 'make's on
case-insensitive file systems (although it currently works
with the recommended toolkits).
On Wed, 21 Jul 2010, Florian Breitwieser wrote:
Hi,
I am writing a R package and having a bit of trouble to have the C++
code working.
I was planing using the .C interface function, however I found the
comment (Use of ‘.C’ for C++ is now deprecated and will be removed in
R 2.12.0.) in the R-exts manual.
So this interface function should not be used anymore - .Call() or
Rcpp instead? What is the reason for the deprecation?
Thanks,
Florian
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