Support for C99 complex type required

[Rainer Hurling]

For more than a decade now it was possible to install the statistical 
program R (http://cran.r-project.org/) from the sources, even without 
patching. Since fortran was removed from the system, lang/gcc44 or 
lang/gcc45 has to be installed before. In addition a nice port exists 
for years now: math/R.

With the new development version of R

   ftp://ftp.stat.math.ethz.ch/Software/R/R-devel.tar.gz

the configure script stops complaining about missing C99 complex types. 
This is reproducable with only untaring the sources and starting 
configure script in R-devel with ./configure.

There was a discussion on the R-devel mailing list about it. The 
developers came to the conclusion that there is no support for complex 
functions complied with C99 standard in FreeBSD.

   http://gcc.gnu.org/gcc-4.2/c99status.html

As far as I can see (I am not a programmer) FreeBSD is using the old c99 
wrapper file in /usr/bin. Am I right that lang/gcc45 should support such 
complex functions?

   http://gcc.gnu.org/gcc-4.5/c99status.html

Is there any way to get access to C99 complex functions of gcc-4.5.3 or 
newer at least within a port?

Thanks for any hint,
Rainer Hurling