R devel - Feb 2006 - Unable to configure R 2.2.1 on Solaris 5.10 x86_64

Hello,

Apologies for the post here. I have read the R-Admin (learned
a lot!) and searched the web for days, but still fail at compiling R on
my machine. This is the tail of './configure' output:
.....
checking for dlopen in -ldl... yes
checking readline/history.h usability... no
checking readline/history.h presence... no
checking for readline/history.h... no
checking readline/readline.h usability... no
checking readline/readline.h presence... no
checking for readline/readline.h... no
checking for rl_callback_read_char in -lreadline... no
checking for main in -lncurses... no
checking for main in -ltermcap... yes
checking for rl_callback_read_char in -lreadline... no
checking for history_truncate_file... no
configure: error: --with-readline=yes (default) and headers/libs are
not available 

My R-2.2.1/config.site has the following changes from default:

CC="cc -xtarget=opteron -xarch=amd64"
CFLAGS="-xO5 -xlibmil -dalign"
CPPFLAGS=-I/opt/sfw/include -I/opt/sfw/include/readline \
-I/opt/csw/include -I/opt/SUNWspro/include -I/opt/csw/include/readline
F77="f95 -xarch=amd64 -xtarget=opteron"
FFLAGS="-xO5 -xlibmil -dalign"
LDFLAGS=-L/opt/SUNWspro/lib/amd64/ -L/opt/sfw/lib -L/opt/csw/lib
CXX="CC -xarch=amd64 -xtarget=opteron"
CXXFLAGS="-xO5 -xlibmil -dalign"
R_BROWSER=mozilla
MAKE=gmake

My .zshrc file has the following (as I saw that some of the LDFLAGS
should match my LD_LIBRARY_PATH and CONFIG_SHELL=/bin/ksh):

LD_LIBRARY_PATH=/opt/sfw/include:/opt/sfw/include/readline:/usr/local/lib:/usr/X/lib:/usr/lib:/usr/ucblib:/lib:/usr/ccs/lib:/etc/lib:/usr/dt/lib:/opt/SUNWspro/lib/amd64/:/opt/sfw/lib:/opt/csw/lib

Readline (version 4.2 from the Sun Companion CD) is located
in /opt/sfw/include/readline. Both the readline.h and history.h files
are there. Version 5.0 is located in /opt/csw/include/readline (from
Blastwave). As you can see, I am new at compiling in generally and
solaris specifically. Any help would be greatly appreciated.

System information:

System = SunOS
Node = unknown
Release = 5.10
KernelID = Generic_118844-26
Machine = i86pc
OEM# = 0
Origin# = 1
NumCPU = 1

thanks,

aric