[R] Unable to compile "Matrix" package

[Vittorio De Martino]

After upgrading to 2.5.0 under freebsd 6.2 I updated all the add-on packages 
in an R session via update.packages(...). R was unable to install 
the "Matrix" package because it couldn't find the package.
Therefore I downloaded the *.tar.gz from the CRAN site and issued

R CMD INSTALL Matrix_0.99875-1.tar.gz 
 
but the comilation ended in an error     (see the complete attached 
r_log.tar.gz)

cc -std=gnu99 -I/usr/local/lib/R/include -I/usr/local/lib/R/include  -I/usr/local/include  -D__NO_MATH_INLINES -I../UFc
cc -std=gnu99 -I/usr/local/lib/R/include -I/usr/local/lib/R/include  -I/usr/local/include  -D__NO_MATH_INLINES -I../UFc
ar -rucs ../COLAMD.a colamd.o colamd_global.oM
( cd Source ; make lib )M
Error expanding embedded variable.M
*** Error code 2M
M
Stop in /tmp/R.INSTALL.IuAhvE/Matrix/src/AMD.M
*** Error code 1M
M
Stop in /tmp/R.INSTALL.IuAhvE/Matrix/src.M
ERROR: compilation failed for package 'Matrix'M
** Removing '/usr/local/lib/R/library/Matrix'M
NbBSD# exitMM
exitM

What shall I do?

Ciao
Vittorio